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CAL AM WATER COMPANY - MONTEREYlikely match
City water report · 2026

Is Seaside Tap Water Safe? 2026 Water Quality Report

Short answer: Two PFAS, PFOA 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. Cal Am Water Company serves 128,928 residents.

Explore the findingsWhat can I do?Follow
Likely match, check your bill

CAL AM WATER COMPANY - MONTEREY serves Seaside

Your water bill or annual water quality report names your actual supplier.

Source
Surface water

Also supplies: Monterey, Pacific Grove, Carmel-by-the-Sea, Del Rey Oaks, Sand City

What stands out

Two PFAS above the 2024 federal limit

Each bar is drawn in blocks of the 4.0 ng/L federal MCL (2024), so the length shows how far above it the result sits.

PFOA

Perfluorooctanoic acid

2× the limit

8.1ng/L

Each block = 4.0 ng/L federal MCL (2024)

EPA UCMR 5 · sampled 2023Evidence
PFOS

Perfluorooctanesulfonic acid

1.8× the limit

7.3ng/L

Each block = 4.0 ng/L federal MCL (2024)

EPA UCMR 5 · sampled 2023Evidence

Coverage by group

31 results on record
  • PFAS (forever chemicals)2 above · 6 detected · 21 not detected
  • Metals & lead1 detected
  • Disinfection by-productsNot monitored
  • Other1 above
Every detected result

10 detected results, by distance from their limit

CAL AM WATER COMPANY - MONTEREY (EPA PWSID CA2710004) delivers surface water to 128,928 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.

21 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
  • PFDA
  • PFDoA
  • PFEESA
  • PFHpS
  • PFMBA
  • PFMPA
  • PFNA
  • PFPeS
  • PFTA
  • PFTrDA
  • PFUnA
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

  1. 01 · TestTest your own tap

    Plumbing inside a home can add lead that the system record can't show. A tap test tells you what reaches your glass.

    Certified lab
    How to test your tap →
  2. 02 · Treat PFASReverse osmosis, or carbon certified for PFAS

    PFOA 8.1 ng/L, above the 4 ng/L limit (+7 more PFAS detected)

    NSF/ANSI 58 or 53, with PFOA/PFOS/PFBS/PFHxA/PFHxS/PFBA/PFHpA/PFPeA named on the listing
    Treatment for PFAS →
  3. 03 · LeadLead-certified carbon filter, or reverse osmosis

    lead 1 µg/L, below the 15 µg/L action level

    NSF/ANSI 53 (lead)
    Treatment for Lead →

Understand water treatment technologies →

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)

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  • Lab-certified results

    ETR Labs Basic Water Quality Test Kit

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    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.

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When your results arrive, read them here →

Commercial

Certified for a concern found here

Each card names which Seaside 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)

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Lead: eligible, evidence match
  • Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 4 more
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 the evidenceCheck price on Amazon
Under-Sink Filter

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

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Lead: eligible, evidence match
  • Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 4 more
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 the evidenceCheck price on Amazon
See all 13 products certified for a Seaside concern →
Countertop System

Aquasana Clean Water Machine Countertop Filter (AQ-CWM2)

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Lead: eligible, evidence match
  • Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 4 more
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 the evidenceCheck price on Amazon
Countertop System

Patriot Pure Ultimate Water Filtration System

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Lead: eligible, evidence match
  • Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 4 more
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 the evidenceCheck price on Amazon
Countertop System

AquaTru Carafe Countertop Reverse-Osmosis Purifier (AT100)

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Lead: eligible, evidence match
  • Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 4 more
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 the evidenceCheck price on Amazon
Countertop System

AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Lead: eligible, evidence match
  • Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 4 more
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 the evidenceCheck price on Amazon
Under-Sink Filter

Waterdrop G3P600 Tankless Reverse-Osmosis System

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Lead: eligible, evidence match
  • Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 4 more
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 the evidenceCheck price on Amazon
Under-Sink Filter

Waterdrop G3P800 Tankless Reverse-Osmosis System

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Lead: eligible, evidence match
  • Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 4 more
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 the evidenceCheck price on Amazon
Refrigerator Filter

Whirlpool Filter 3 Refrigerator Water Filter (WHR3RXD1)

  • PFOA: eligible, evidence match
  • PFOS: eligible, evidence match
  • Lead: eligible, evidence match
  • Not established: Lithium, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and 4 more
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 the evidenceCheck price on Amazon
Water Pitcher

Brita Elite Water Filter Pitcher

  • Lead: eligible, evidence match
  • Not established: PFOA, PFOS, Lithium and 6 more
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 the evidenceCheck price on Amazon
Water Pitcher

Culligan ZeroWater 10-Cup Pitcher (ZEROP10)

  • Lead: eligible, evidence match
  • Not established: PFOA, PFOS, Lithium and 6 more
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 the evidenceCheck price on Amazon
Faucet Attachment

PUR Plus Faucet Filter (FM2500V)

  • Lead: eligible, evidence match
  • Not established: PFOA, PFOS, Lithium and 6 more
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 the evidenceCheck price on Amazon
Under-Sink Filter

Frizzlife SP99 Under-Sink Filter

  • Lead: eligible, evidence match
  • Not established: PFOA, PFOS, Lithium and 6 more
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
See the evidenceCheck price on Amazon
Questions

Frequently asked questions

Is Seaside tap water safe to drink?

PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Seaside, PFOA 8.1 ng/L and PFOS 7.3 ng/L were measured above the 4 ng/L federal limit in EPA's 2024 testing; the lead 90th-percentile result was 1 µg/L against the 15 µg/L action level. CAL AM WATER COMPANY - MONTEREY (PWSID CA2710004) has a Purity Score of 56/100 (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 Seaside?

CAL AM WATER COMPANY - MONTEREY (PWS ID CA2710004) is the public water system on record for Seaside, California, serving about 128,928 people. Confirm the utility on your water bill before acting on a specific finding.

Where does Seaside get its drinking water?

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

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

Yes. In EPA's UCMR 5 testing (2023-02-13 to 2023-12-29), PFOA was measured at 8.1 ng/L against a 4 ng/L federal limit and PFOS was measured at 7.3 ng/L against a 4 ng/L federal limit. PFBS (13.2 ng/L, below the 2,000 ng/L EPA health advisory), PFHxA (9.3 ng/L, below the 400,000 ng/L state limit) and PFHxS (8.7 ng/L, below the 10 ng/L federal limit) were also detected. PFBA (5 ng/L), PFHpA (3.6 ng/L) and PFPeA (9.2 ng/L) were also detected; they have no federal or state limit. Reverse osmosis and filters certified to NSF/ANSI 53 for PFOA/PFOS reduce them at the tap.

Is there lead in Seaside's tap water?

CAL AM WATER COMPANY - MONTEREY's most recent lead 90th-percentile result (2026) was 1 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.

What does the latest Seaside water report show?

PurityMap's current record for Seaside holds 31 findings: 3 above a reference, 4 detected within the reference, 3 detected with no limit and 21 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 31 records and their sourcesEPA UCMR 5 · EPA SDWIS (Lead & Copper Rule)
ContaminantResultBenchmarkStatusSampledSource
Lithium57.5 µg/L10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limitAbove the referenced health-based guidance value2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorooctanoic acid (PFOA)8.1 ng/L4.0 ng/L federal MCL (2024)Above a historical reference; current applicability unverified2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorooctanesulfonic acid (PFOS)7.3 ng/L4.0 ng/L federal MCL (2024)Above a historical reference; current applicability unverified2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorohexanesulfonic acid (PFHxS)8.7 ng/L10 ng/L federal MCL (2024)Within a historical reference; current applicability unverified2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Lead (90th percentile)1 µg/L15 µg/L federal action levelBelow the listed reference2026–2026 monitoring period (still open)Lead & Copper Rule 90th-percentile: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorobutanesulfonic acid (PFBS)13.2 ng/L2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limitWithin the referenced health-based guidance value2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorohexanoic acid (PFHxA)9.3 ng/L400,000 ng/L Michigan EGLE state MCL (strictest US state)Within a historical reference; current applicability unverified2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorobutanoic acid (PFBA)5 ng/LNo federal or state limit; shown for transparencyDetected, no limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluoroheptanoic acid (PFHpA)3.6 ng/LNo federal or state limit; shown for transparencyDetected, no limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluoropentanoic acid (PFPeA)9.2 ng/LNo federal or state limit; shown for transparencyDetected, no limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
21 other PFAS tested — none detected
ContaminantResultBenchmarkStatusSampledSource
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)< 5 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)< 5 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)< 5 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)< 2 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)< 5 ng/L10 ng/L federal MCL (2024)Not detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)< 5 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)< 6 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)< 20 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluoro-3-methoxypropanoic acid (PFMPA)< 4 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluoro-4-methoxybutanoic acid (PFMBA)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorodecanoic acid (PFDA)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorododecanoic acid (PFDoA)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluoroheptanesulfonic acid (PFHpS)< 3 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorononanoic acid (PFNA)< 4 ng/L10 ng/L federal MCL (2024)Not detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluoropentanesulfonic acid (PFPeS)< 4 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorotetradecanoic acid (PFTA)< 8 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluorotridecanoic acid (PFTrDA)< 7 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)
Perfluoroundecanoic acid (PFUnA)< 2 ng/LNo federal or state limit; shown for transparencyNot detected above the reporting limit2023-02-13 to 2023-12-29UCMR5 Analytical Results: CAL AM WATER COMPANY - MONTEREY (CA2710004)

Lithium

Result
57.5 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
2023-02-13 to 2023-12-29

Perfluorooctanoic acid (PFOA)

Result
8.1 ng/L
Benchmark
4.0 ng/L federal MCL (2024)
Status
Above a historical reference; current applicability unverified
Sampled
2023-02-13 to 2023-12-29

Perfluorooctanesulfonic acid (PFOS)

Result
7.3 ng/L
Benchmark
4.0 ng/L federal MCL (2024)
Status
Above a historical reference; current applicability unverified
Sampled
2023-02-13 to 2023-12-29

Perfluorohexanesulfonic acid (PFHxS)

Result
8.7 ng/L
Benchmark
10 ng/L federal MCL (2024)
Status
Within a historical reference; current applicability unverified
Sampled
2023-02-13 to 2023-12-29

Lead (90th percentile)

Result
1 µg/L
Benchmark
15 µg/L federal action level
Status
Below the listed reference
Sampled
2026–2026 monitoring period (still open)

Perfluorobutanesulfonic acid (PFBS)

Result
13.2 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
2023-02-13 to 2023-12-29

Perfluorohexanoic acid (PFHxA)

Result
9.3 ng/L
Benchmark
400,000 ng/L Michigan EGLE state MCL (strictest US state)
Status
Within a historical reference; current applicability unverified
Sampled
2023-02-13 to 2023-12-29

Perfluorobutanoic acid (PFBA)

Result
5 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Detected, no limit
Sampled
2023-02-13 to 2023-12-29

Perfluoroheptanoic acid (PFHpA)

Result
3.6 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Detected, no limit
Sampled
2023-02-13 to 2023-12-29

Perfluoropentanoic acid (PFPeA)

Result
9.2 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Detected, no limit
Sampled
2023-02-13 to 2023-12-29
21 other PFAS 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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

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
2023-02-13 to 2023-12-29

Perfluorodecanoic acid (PFDA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2023-02-13 to 2023-12-29

Perfluorododecanoic acid (PFDoA)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2023-02-13 to 2023-12-29

Perfluoroheptanesulfonic acid (PFHpS)

Result
< 3 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2023-02-13 to 2023-12-29

Perfluorononanoic acid (PFNA)

Result
< 4 ng/L
Benchmark
10 ng/L federal MCL (2024)
Status
Not detected above the reporting limit
Sampled
2023-02-13 to 2023-12-29

Perfluoropentanesulfonic acid (PFPeS)

Result
< 4 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2023-02-13 to 2023-12-29

Perfluorotetradecanoic acid (PFTA)

Result
< 8 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2023-02-13 to 2023-12-29

Perfluorotridecanoic acid (PFTrDA)

Result
< 7 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2023-02-13 to 2023-12-29

Perfluoroundecanoic acid (PFUnA)

Result
< 2 ng/L
Benchmark
No federal or state limit; shown for transparency
Status
Not detected above the reporting limit
Sampled
2023-02-13 to 2023-12-29

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: CAL AM WATER COMPANY - MONTEREY (CA2710004)

    US EPA

    Published
    2026-01-15
    Newest sample
    2023-12-29
    Findings here
    30

    View source ↗Source record

  • State SDWIS Compliance Record

    Lead & Copper Rule 90th-percentile: CAL AM WATER COMPANY - MONTEREY (CA2710004)

    US EPA SDWIS

    Published
    2026-07-09
    Newest sample
    2026
    Findings here
    1

    View source ↗Source record

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

Data & methodologyHow we analyze waterData integrity policy

Something off with your water's smell, color or taste?

Start with the hot-or-cold tap check. Where Cal Am Water Company reported something related, it's shown below.

ZIP codes in Seaside

A ZIP code is a postal area, not a water service area. Your water bill names your supplier.