PFOS
3.5× the limitPerfluorooctanesulfonic acid
13.9ng/L
Each block = 4.0 ng/L federal MCL (2024)
EPA UCMR 5 · sampled 2025Evidence
City water report · 2026
Is Wallingford Center Tap Water Safe? 2026 Water Quality Report
Short answer: Two PFAS, PFHxS and PFOS, are above their federal limits (2024 limits that water systems have until at least 2029 to meet); lithium sits above a screening level. Wallingford Water Department serves 37,267 residents.
Likely match, check your bill
WALLINGFORD WATER DEPARTMENT serves Wallingford Center
Your water bill or annual water quality report names your actual supplier.
- Source
- Surface water
- Lead service lines
- 0 lead
- WALLINGFORD WATER DEPARTMENTThis reportCT1480011 · 37,267 served
What stands out
Two PFAS above the 2024 federal limit
Each bar is drawn in blocks of its own limit, so the length shows how far above it the result sits.
PFHxS
1.1× the limitPerfluorohexanesulfonic acid
10.7ng/L
Each block = 10 ng/L federal MCL (2024)
EPA UCMR 5 · sampled 2025Evidence
Coverage by group
31 results on record- PFAS (forever chemicals)2 above · 1 detected · 26 not detected
- Metals & lead1 not detected
- Disinfection by-productsNot monitored
- Other1 above
Every detected result
4 detected results, by distance from their limit
WALLINGFORD WATER DEPARTMENT (EPA PWSID CT1480011) delivers surface water to 37,267 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.
- Perfluorooctanesulfonic acid (PFOS)EPA UCMR 5 · 20254.0 ng/L federal MCL (2024)13.9ng/LAbove limit
- LithiumEPA UCMR 5 · 202510 µg/L EPA health reference level (screening, not a legal limit)11.1µg/LAbove screening
- Perfluorohexanesulfonic acid (PFHxS)EPA UCMR 5 · 202510 ng/L federal MCL (2024)10.7ng/LAbove limit
- Perfluorobutanesulfonic acid (PFBS)EPA UCMR 5 · 20252,000 ng/L EPA health advisory (screening, not a legal limit)4ng/LWithin reference
27 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
- PFDA
- PFDoA
- PFEESA
- PFHpA
- PFHpS
- PFHxA
- PFMBA
- PFMPA
- PFNA
- PFOA
- PFPeA
- PFPeS
- PFTA
- PFTrDA
- PFUnA
- Lead (90th percentile)
Track record
0health-based violations in the last 10 years
From EPA SDWIS. A clean violation history means no enforcement action was recorded; it does not cover contaminants without a limit.
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.
What you can do
Test first, then treat what was found
- 01 · TestTest your own tap
A tap test can confirm levels at your home before you choose treatment.
Certified labHow to test your tap → - 02 · Treat PFASReverse osmosis, or carbon certified for PFAS
PFOS 13.9 ng/L, above the 4 ng/L limit (+2 more PFAS detected)
NSF/ANSI 58 or 53, with PFHxS/PFOS/PFBS named on the listingTreatment for PFAS → - 03 · LithiumDepends on the contaminant
Lithium 11.1 µg/L, above the 10.0 µg/L EPA health reference level
The certifier's listing for each named contaminantTreatment for Lithium →
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
Watersafe Drinking Water Test Kit
Silver Lake Research
Lead, bacteria, nitrate, copper, iron, chlorine, hardness and pH
- Turnaround: Minutes; the bacteria test can take up to 48 hours
What it can't tell you: Each test gives a yes/no or a rough range, not a lab number, and it cannot detect PFAS or arsenic.
Lab-certified results
ETR Labs Basic Water Quality Test Kit
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
- Analyzed by Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638
- Turnaround: 2–4 business days after the lab receives it
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.
When your results arrive, read them here →
Commercial
Certified for a concern found here
Each card names which Wallingford Center 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 2-Stage Under-Sink Filter (AQ-5200)
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, Perfluorobutanesulfonic acid (PFBS)
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
Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M)
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, Perfluorobutanesulfonic acid (PFBS)
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
See all 9 products certified for a Wallingford Center concern →
Countertop System
Aquasana Clean Water Machine Countertop Filter (AQ-CWM2)
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, Perfluorobutanesulfonic acid (PFBS)
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
Countertop System
Patriot Pure Ultimate Water Filtration System
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, Perfluorobutanesulfonic acid (PFBS)
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
Countertop System
AquaTru Carafe Countertop Reverse-Osmosis Purifier (AT100)
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, Perfluorobutanesulfonic acid (PFBS)
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
Countertop System
AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, Perfluorobutanesulfonic acid (PFBS)
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
Waterdrop G3P600 Tankless Reverse-Osmosis System
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, Perfluorobutanesulfonic acid (PFBS)
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 G3P800 Tankless Reverse-Osmosis System
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, Perfluorobutanesulfonic acid (PFBS)
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)
- PFOS: eligible, evidence match
- Not established: PFHxS, Lithium, Perfluorobutanesulfonic acid (PFBS)
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 Wallingford Center tap water safe to drink?
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Wallingford Center, PFOS 13.9 ng/L (limit 4 ng/L) and PFHxS 10.7 ng/L (limit 10 ng/L) were measured above their limits in EPA's 2024 testing. WALLINGFORD WATER DEPARTMENT (PWSID CT1480011) has a Purity Score of 57/100 (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 Wallingford Center?
WALLINGFORD WATER DEPARTMENT (PWS ID CT1480011) is the public water system on record for Wallingford Center, Connecticut, serving about 37,267 people. Confirm the utility on your water bill before acting on a specific finding.
Where does Wallingford Center get its drinking water?
Surface water (primary source of record in EPA SDWIS).
Are PFAS "forever chemicals" in Wallingford Center's water?
Yes. In EPA's UCMR 5 testing (2025-07-22 to 2026-04-06), PFOS was measured at 13.9 ng/L against a 4 ng/L federal limit and PFHxS was measured at 10.7 ng/L against a 10 ng/L federal limit. PFBS (4 ng/L, below the 2,000 ng/L EPA health advisory) was also detected. Reverse osmosis and filters certified to NSF/ANSI 53 for PFOA/PFOS reduce them at the tap.
Is there lead in Wallingford Center's tap water?
Lead is not in Wallingford Center's current published record. Lead usually enters from a building's own pipes and fixtures, so a certified home test is the way to know yours.
What does the latest Wallingford Center water report show?
PurityMap's current record for Wallingford Center holds 31 findings: 3 above a reference, 1 detected within the reference and 27 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
Follow Wallingford Center's water
One email when a new sampling round is published, a result moves above or below its reference, or the system's score changes.
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Sources and dataAll 31 records and their sourcesEPA UCMR 5 · EPA SDWIS (Lead & Copper Rule)
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 13.9 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Lithium | 11.1 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Above the referenced health-based guidance value | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluorohexanesulfonic acid (PFHxS) | 10.7 ng/L | 10 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluorobutanesulfonic acid (PFBS) | 4 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
27 other contaminants tested — none detected
| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| 1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| 1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| 1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| 9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | Not detected above the reporting limit | 2026–2026 monitoring period (still open) | Lead & Copper Rule 90th-percentile: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2025-07-22 to 2026-04-06 | UCMR5 Analytical Results: WALLINGFORD WATER DEPARTMENT (CT1480011) |
Perfluorooctanesulfonic acid (PFOS)
- Result
- 13.9 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Above a historical reference; current applicability unverified
- Sampled
- 2025-07-22 to 2026-04-06
- Result
- 11.1 µg/L
- Benchmark
- 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit
- Status
- Above the referenced health-based guidance value
- Sampled
- 2025-07-22 to 2026-04-06
Perfluorohexanesulfonic acid (PFHxS)
- Result
- 10.7 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Above a historical reference; current applicability unverified
- Sampled
- 2025-07-22 to 2026-04-06
Perfluorobutanesulfonic acid (PFBS)
- Result
- 4 ng/L
- Benchmark
- 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit
- Status
- Within the referenced health-based guidance value
- Sampled
- 2025-07-22 to 2026-04-06
27 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
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
- Result
- < 5 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
- Result
- Non-Detect (ND)
- Benchmark
- 15 µg/L federal action level
- Status
- Not detected above the reporting limit
- Sampled
- 2026–2026 monitoring period (still open)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Result
- < 6 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Result
- < 20 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluoro-3-methoxypropanoic acid (PFMPA)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluoro-4-methoxybutanoic acid (PFMBA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluorododecanoic acid (PFDoA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluoroheptanesulfonic acid (PFHpS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluoroheptanoic acid (PFHpA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluorohexanoic acid (PFHxA)
- Result
- < 3 ng/L
- Benchmark
- 400,000 ng/L Michigan EGLE state MCL (strictest US state)
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
- Result
- < 4 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
- Result
- < 4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluoropentanesulfonic acid (PFPeS)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluoropentanoic acid (PFPeA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluorotetradecanoic acid (PFTA)
- Result
- < 8 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluorotridecanoic acid (PFTrDA)
- Result
- < 7 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
Perfluoroundecanoic acid (PFUnA)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Status
- Not detected above the reporting limit
- Sampled
- 2025-07-22 to 2026-04-06
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: WALLINGFORD WATER DEPARTMENT (CT1480011)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: WALLINGFORD WATER DEPARTMENT (CT1480011)
US EPA SDWIS
Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.
Something off with your water's smell, color or taste?
Start with the hot-or-cold tap check. Where Wallingford Water Department reported something related, it's shown below.
- Rotten-egg smell
- Cloudy or milky water
- Chlorine smell
- Brown or yellow water
- Metallic taste
Lead at Wallingford Water Department: not detected (90th percentile, 2026 monitoring period (still open)). Lead has no taste, so a taste neither shows nor rules it out.