WAUKESHA WATER UTILITYlisted match
City water report · 2026

Is Waukesha Tap Water Safe? 2026 Water Quality Report

Short answer: No measured result is above a legal limit; past health-based violations for Combined radium-226/228 and Gross alpha particles are on record. Waukesha Water Utility serves 70,718 residents.

Listed match

WAUKESHA WATER UTILITY serves Waukesha

EPA lists this system for the city. Your water bill or annual water quality report names your actual supplier.

Source
Surface water
Lead service lines
0 lead

Source: EPA SDWIS 2026Q2.

Every detected result

3 detected results, by distance from their limit

WAUKESHA WATER UTILITY (EPA PWSID WI2680238) delivers surface water to 70,718 residents. This report reflects 29 individual PFAS result(s) from the source UCMR5 observations and the latest Lead & Copper Rule 90th-percentile result. Water hardness and disinfectant type are pending the utility's own annual report.

30 other contaminants tested, none detected
  • 11Cl-PF3OUdS
  • 4:2 FTS
  • 6:2 FTS
  • 8:2 FTS
  • 9Cl-PF3ONS
  • ADONA
  • HFPO-DA (GenX)
  • NEtFOSAA
  • NFDHA
  • NMeFOSAA
  • PFBA
  • PFBS
  • PFDA
  • PFDoA
  • PFEESA
  • PFHpA
  • PFHpS
  • PFHxA
  • PFHxS
  • PFMBA
  • PFMPA
  • PFNA
  • PFOA
  • PFOS
  • PFPeA
  • PFPeS
  • PFTA
  • PFTrDA
  • PFUnA
  • Lithium

Coverage by group

33 results on record
  • PFAS (forever chemicals)29 not detected
  • Metals & lead1 detected
  • Disinfection by-productsNot monitored
  • Other2 above · 1 not detected
Track record

16health-based violations in the last 10 years

From EPA SDWIS. Counted once per contaminant per year, as in the Track record score. All 143 EPA filings are listed below.

Not in this recordDisinfection by-products weren't monitored in this dataset

No result is not a pass. Your utility's annual water quality report may list them, and a certified lab test covers your own tap.

Health-based violations, last 10 years

Every filing is listed; the Track record score counts at most one per contaminant per year.

Filings 2014–2023
  • Combined Radium (-226 and -228)
  • Gross Alpha, Excl. Radon and U

Resolved

  1. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2401432

  2. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2401431

  3. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301429

  4. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301428

  5. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301410

  6. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301409

  7. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301408

  8. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301407

  9. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301400

  10. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301399

Show 133 more
  1. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301398

  2. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301397

  3. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301388

  4. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301406

  5. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301402

  6. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301401

  7. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301391

  8. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301389

  9. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301381

  10. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301380

  11. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301379

  12. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301378

  13. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301371

  14. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2301370

  15. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201357

  16. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201356

  17. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201355

  18. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201354

  19. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201347

  20. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201346

  21. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201353

  22. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201352

  23. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201351

  24. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201350

  25. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201345

  26. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201344

  27. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201324

  28. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201323

  29. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201322

  30. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201319

  31. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201317

  32. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201316

  33. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201321

  34. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201320

  35. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201318

  36. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201315

  37. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201294

  38. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201285

  39. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201295

  40. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201292

  41. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201291

  42. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201287

  43. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201286

  44. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201284

  45. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201260

  46. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201259

  47. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201238

  48. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2201237

  49. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101207

  50. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101201

  51. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101205

  52. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101204

  53. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101203

  54. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101202

  55. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101200

  56. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101199

  57. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101178

  58. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101177

  59. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101176

  60. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101175

  61. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101174

  62. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101172

  63. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101149

  64. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2101143

  65. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001116

  66. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001114

  67. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001089

  68. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001119

  69. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001118

  70. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001115

  71. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001113

  72. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001088

  73. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001084

  74. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001083

  75. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001082

  76. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001065

  77. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001064

  78. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001040

  79. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001039

  80. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001038

  81. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001037

  82. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 2001036

  83. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1901013

  84. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1901002

  85. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1901000

  86. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900999

  87. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900995

  88. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900993

  89. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900992

  90. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900988

  91. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900986

  92. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900985

  93. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900984

  94. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900983

  95. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900982

  96. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900979

  97. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900978

  98. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1900977

  99. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800960

  100. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800959

  101. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800958

  102. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800957

  103. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800956

  104. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800941

  105. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800939

  106. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800938

  107. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800924

  108. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800923

  109. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800909

  110. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800908

  111. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800907

  112. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800905

  113. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800904

  114. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800902

  115. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1800889

  116. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700867

  117. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700866

  118. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700885

  119. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700884

  120. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700883

  121. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700865

  122. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700864

  123. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700862

  124. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700861

  125. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700847

  126. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700844

  127. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700843

  128. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700842

  129. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700841

  130. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700840

  131. Combined Radium (-226 and -228)MCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700839

  132. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700831

  133. Gross Alpha, Excl. Radon and UMCL

    to Resolved

    EPA status: ResolvedSDWIS ID 1700830

Test your own tap

Screening tells you if something is worth a closer look; a lab result is the number you can act on.

As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure.

  • Screening: quick check, not lab-grade

    Safe Home DIY Lead in Drinking Water Combo Test Kit

    Safe Home (EnviroTestKits)

    Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb

    • Turnaround: 5 minutes

    What it can't tell you: It shows a lead range, not an exact level, and tests nothing else unless you pay extra for the optional lab test.

  • Lab-certified results

    ETR Labs Basic Water Quality Test Kit

    ETR Laboratories

    50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria

    What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.

Commercial

Certified for a concern found here

Each card names which Waukesha findings its current certification covers, and which it doesn't.

As an Amazon Associate, PurityMap earns from qualifying purchases. A product appears here only when a current certification record covers at least one identified concern; every concern stays listed. The retail offer is looked up afterwards and never changes which products appear or their order. Affiliate disclosure.

Under-Sink Filter

Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M)

  • Lead: eligible, evidence match
Not suitable for (5)
  • Treating every tap in the home
  • A whole-home hard-water or scale problem
  • All PFAS: its evidence covers only the compounds it names
  • Anyone who can't plumb, drill or hire an installer
  • Renters who can't modify plumbing
Countertop System

Aquasana Clean Water Machine Countertop Filter (AQ-CWM2)

  • Lead: eligible, evidence match
Not suitable for (3)
  • Treating every tap in the home
  • A whole-home hard-water or scale problem
  • All PFAS: its evidence covers only the compounds it names
See all 9 products certified for a Waukesha concern →
Countertop System

AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)

  • Lead: eligible, evidence match
Not suitable for (3)
  • Treating every tap in the home
  • A whole-home hard-water or scale problem
  • All PFAS: its evidence covers only the compounds it names
Water Pitcher

Culligan ZeroWater 10-Cup Pitcher (ZEROP10)

  • Lead: eligible, evidence match
Not suitable for (3)
  • Treating every tap in the home
  • A whole-home hard-water or scale problem
  • All PFAS: its evidence covers only the compounds it names
Faucet Attachment

Faucet-Mount Filter

  • Lead: eligible, evidence match
Not suitable for (3)
  • Treating every tap in the home
  • A whole-home hard-water or scale problem
  • All PFAS: its evidence covers only the compounds it names
Under-Sink Filter

Under-Sink Carbon Block Filter

  • Lead: eligible, evidence match
Not suitable for (4)
  • Treating every tap in the home
  • A whole-home hard-water or scale problem
  • All PFAS: its evidence covers only the compounds it names
  • Anyone who can't plumb, drill or hire an installer
Under-Sink Filter

Under-Sink Reverse-Osmosis System

  • Lead: eligible, evidence match
Not suitable for (5)
  • Treating every tap in the home
  • A whole-home hard-water or scale problem
  • All PFAS: its evidence covers only the compounds it names
  • Anyone who can't plumb, drill or hire an installer
  • Renters who can't modify plumbing
Under-Sink Filter

Waterdrop G3P600 Tankless Reverse-Osmosis System

  • Lead: eligible, evidence match
Not suitable for (5)
  • Treating every tap in the home
  • A whole-home hard-water or scale problem
  • All PFAS: its evidence covers only the compounds it names
  • Anyone who can't plumb, drill or hire an installer
  • Renters who can't modify plumbing
Refrigerator Filter

Whirlpool Filter 3 Refrigerator Water Filter (WHR3RXD1)

  • Lead: eligible, evidence match
Not suitable for (3)
  • Treating every tap in the home
  • A whole-home hard-water or scale problem
  • All PFAS: its evidence covers only the compounds it names
Questions

Frequently asked questions

Is Waukesha tap water safe to drink?

PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Waukesha, no regulated PFAS were detected in EPA's 2024 testing; the lead 90th-percentile result was 0.56 µg/L against the 15 µg/L action level; 2 health-based violations are on record (Combined radium-226/228 and Gross alpha particles). WAUKESHA WATER UTILITY (PWSID WI2680238) has a Purity Score of 85/100 (confidence: moderate), assessed at the water-system level and computed only from contaminants that were measured. Water can change in your own pipes, so a certified test is the only way to know what comes out of your tap.

Who provides tap water in Waukesha?

WAUKESHA WATER UTILITY (PWS ID WI2680238) is the public water system on record for Waukesha, Wisconsin, serving about 70,718 people. Confirm the utility on your water bill before acting on a specific finding.

Where does Waukesha get its drinking water?

Surface water (primary source of record in EPA SDWIS).

Are PFAS "forever chemicals" in Waukesha's water?

None of the 29 PFAS in EPA's UCMR 5 testing (2023-02-03 to 2023-08-15) was detected. "Not detected" means below the lab's reporting limit, not proven zero.

Is there lead in Waukesha's tap water?

WAUKESHA WATER UTILITY's most recent lead 90th-percentile result (2024) was 0.56 µg/L, below the 15 µg/L action level. That figure comes from sampled homes; lead usually enters from a building's own pipes and fixtures, so only a test at your tap tells you what you drink.

Has Waukesha's water system had violations?

The federal SDWIS record lists 2 health-based violations for WAUKESHA WATER UTILITY within about the last ten years: Combined radium-226/228 (2023) and Gross alpha particles (2023). The findings above show each one's status.

What does the latest Waukesha water report show?

PurityMap's current record for Waukesha holds 33 findings: 2 above a reference, 1 detected within the reference and 30 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass.

Follow this water

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Sources and dataAll 33 records and their sourcesEPA UCMR 5 · EPA SDWIS (Lead & Copper Rule) · EPA SDWIS violations
ContaminantResultBenchmarkSampledSource
Combined radium-226/2287.79 PCI/L5 pCi/L2023EPA SDWIS Violations & Enforcement: WAUKESHA WATER UTILITY (WI2680238)
Gross alpha particles16.95 PCI/L15 pCi/L2023EPA SDWIS Violations & Enforcement: WAUKESHA WATER UTILITY (WI2680238)
Lead (90th percentile)0.56 µg/L15 µg/L federal action level2024–2024 monitoring periodLead & Copper Rule 90th-percentile: WAUKESHA WATER UTILITY (WI2680238)
30 other contaminants tested — none detected
ContaminantResultBenchmarkSampledSource
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)< 5 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)< 5 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)< 3 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)< 5 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)< 3 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)< 2 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)< 5 ng/L10 ng/L federal MCL (2024)2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Lithium< 9 µg/L10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)< 5 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)< 6 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)< 20 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)< 3 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluoro-3-methoxypropanoic acid (PFMPA)< 4 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluoro-4-methoxybutanoic acid (PFMBA)< 3 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorobutanesulfonic acid (PFBS)< 3 ng/L2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorobutanoic acid (PFBA)< 5 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorodecanoic acid (PFDA)< 3 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorododecanoic acid (PFDoA)< 3 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluoroheptanesulfonic acid (PFHpS)< 3 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluoroheptanoic acid (PFHpA)< 3 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorohexanesulfonic acid (PFHxS)< 3 ng/L10 ng/L federal MCL (2024)2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorohexanoic acid (PFHxA)< 3 ng/L400,000 ng/L Michigan EGLE state MCL (strictest US state)2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorononanoic acid (PFNA)< 4 ng/L10 ng/L federal MCL (2024)2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorooctanesulfonic acid (PFOS)< 4 ng/L4.0 ng/L federal MCL (2024)2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorooctanoic acid (PFOA)< 4 ng/L4.0 ng/L federal MCL (2024)2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluoropentanesulfonic acid (PFPeS)< 4 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluoropentanoic acid (PFPeA)< 3 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorotetradecanoic acid (PFTA)< 8 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluorotridecanoic acid (PFTrDA)< 7 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)
Perfluoroundecanoic acid (PFUnA)< 2 ng/LNo federal or state limit; shown for transparency2023-02-03 to 2023-08-15UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)

Lead (90th percentile)

Result
0.56 µg/L
Benchmark
15 µg/L federal action level
Sampled
2024–2024 monitoring period
30 other contaminants tested — none detected

11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)

Result
< 5 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)

Result
< 5 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)

Result
< 5 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

4,8-Dioxa-3H-perfluorononanoic acid (ADONA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)

Result
< 2 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)

Result
< 5 ng/L
Benchmark
10 ng/L federal MCL (2024)
Sampled
2023-02-03 to 2023-08-15

Lithium

Result
< 9 µg/L
Benchmark
10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit
Sampled
2023-02-03 to 2023-08-15

N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)

Result
< 5 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)

Result
< 6 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)

Result
< 20 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluoro-3-methoxypropanoic acid (PFMPA)

Result
< 4 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluoro-4-methoxybutanoic acid (PFMBA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluorobutanesulfonic acid (PFBS)

Result
< 3 ng/L
Benchmark
2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit
Sampled
2023-02-03 to 2023-08-15

Perfluorobutanoic acid (PFBA)

Result
< 5 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluorodecanoic acid (PFDA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluorododecanoic acid (PFDoA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluoroheptanesulfonic acid (PFHpS)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluoroheptanoic acid (PFHpA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluorohexanesulfonic acid (PFHxS)

Result
< 3 ng/L
Benchmark
10 ng/L federal MCL (2024)
Sampled
2023-02-03 to 2023-08-15

Perfluorohexanoic acid (PFHxA)

Result
< 3 ng/L
Benchmark
400,000 ng/L Michigan EGLE state MCL (strictest US state)
Sampled
2023-02-03 to 2023-08-15

Perfluorononanoic acid (PFNA)

Result
< 4 ng/L
Benchmark
10 ng/L federal MCL (2024)
Sampled
2023-02-03 to 2023-08-15

Perfluorooctanesulfonic acid (PFOS)

Result
< 4 ng/L
Benchmark
4.0 ng/L federal MCL (2024)
Sampled
2023-02-03 to 2023-08-15

Perfluorooctanoic acid (PFOA)

Result
< 4 ng/L
Benchmark
4.0 ng/L federal MCL (2024)
Sampled
2023-02-03 to 2023-08-15

Perfluoropentanesulfonic acid (PFPeS)

Result
< 4 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluoropentanoic acid (PFPeA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluorotetradecanoic acid (PFTA)

Result
< 8 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluorotridecanoic acid (PFTrDA)

Result
< 7 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Perfluoroundecanoic acid (PFUnA)

Result
< 2 ng/L
Benchmark
No federal or state limit; shown for transparency
Sampled
2023-02-03 to 2023-08-15

Every value is the published result from the cited public record. A reporting limit is the lowest level the method could reliably quantify; a non-detect is not a guarantee of zero.

  • UCMR5 Analytical Results

    UCMR5 Analytical Results: WAUKESHA WATER UTILITY (WI2680238)

    US EPA

    Published
    2026-01-15
    Newest sample
    2023-08-15
    Findings here
    30
  • State SDWIS Compliance Record

    Lead & Copper Rule 90th-percentile: WAUKESHA WATER UTILITY (WI2680238)

    US EPA SDWIS

    Published
    2026-07-09
    Newest sample
    2024
    Findings here
    1
  • State SDWIS Compliance Record

    EPA SDWIS Violations & Enforcement: WAUKESHA WATER UTILITY (WI2680238)

    US EPA SDWIS

    Published
    2026-07-09
    Newest sample
    2023
    Findings here
    2

Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.