PFOS
4.6× the limitPerfluorooctanesulfonic acid
18.5ng/L
Each block = 4.0 ng/L federal MCL (2024)
EPA UCMR 5 · sampled 2025Evidence
City water report · 2026
Is Lakewood Tap Water Safe? 2026 Water Quality Report
Short answer: PFOS is above its federal limit (a 2024 limit that water systems have until at least 2029 to meet); everything else measured is within its reference or not detected. Lakewood - City, Water Dept. serves 66,135 residents.
Listed match
LAKEWOOD - CITY, WATER DEPT. serves Lakewood
EPA lists this system for the city. Your water bill or annual water quality report names your actual supplier.
- Source
- Groundwater
- Lead service lines
- 0 lead
Source: EPA SDWIS 2026Q2.
- LAKEWOOD - CITY, WATER DEPT.This reportCA1910239 · 66,135 served
What stands out
One PFAS above the 2024 federal limit
The 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.
Coverage by group
31 results on record- PFAS (forever chemicals)1 above · 1 detected · 27 not detected
- Metals & lead1 not detected
- Disinfection by-productsNot monitored
- Other1 not detected
Every detected result
2 detected results, by distance from their limit
LAKEWOOD - CITY, WATER DEPT. (EPA PWSID CA1910239) delivers groundwater to 66,135 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)18.5ng/LAbove limit
- Perfluorohexanesulfonic acid (PFHxS)EPA UCMR 5 · 202510 ng/L federal MCL (2024)3.4ng/LWithin reference
29 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
- PFMBA
- PFMPA
- PFNA
- PFOA
- PFPeA
- PFPeS
- PFTA
- PFTrDA
- PFUnA
- Lithium
- 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 18.5 ng/L, above the 4 ng/L limit (+1 more PFAS detected)
NSF/ANSI 58 or 53, with PFOS/PFHxS named on the listingTreatment for PFAS →
Commercial
Certified for a concern found here
Each card names which Lakewood 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)
- PFOS: eligible, evidence match
- Not established: PFHxS
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)
- PFOS: eligible, evidence match
- Not established: PFHxS
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 6 products certified for a Lakewood concern →
Countertop System
AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000)
- PFOS: eligible, evidence match
- Not established: PFHxS
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 Reverse-Osmosis System
- PFOS: eligible, evidence match
- Not established: PFHxS
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
- PFOS: eligible, evidence match
- Not established: PFHxS
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
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 Lakewood tap water safe to drink?
PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Lakewood, PFOS 18.5 ng/L was measured above the 4 ng/L federal limit in EPA's 2024 testing. LAKEWOOD - CITY, WATER DEPT. (PWSID CA1910239) 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 Lakewood?
LAKEWOOD - CITY, WATER DEPT. (PWS ID CA1910239) is the public water system on record for Lakewood, California, serving about 66,135 people. Confirm the utility on your water bill before acting on a specific finding.
Where does Lakewood get its drinking water?
Groundwater (primary source of record in EPA SDWIS).
Are PFAS "forever chemicals" in Lakewood's water?
Yes. In EPA's UCMR 5 testing (2025-11-25 to 2026-05-28), PFOS was measured at 18.5 ng/L against a 4 ng/L federal limit. PFHxS was detected below its limit. Reverse osmosis and filters certified to NSF/ANSI 53 for PFOA/PFOS reduce them at the tap.
Is there lead in Lakewood's tap water?
Lead is not in Lakewood'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 Lakewood water report show?
PurityMap's current record for Lakewood holds 31 findings: 1 above a reference, 1 detected within the reference and 29 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 Lakewood'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 | Sampled | Source |
|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 18.5 ng/L | 4.0 ng/L federal MCL (2024) | 2025-11-25 to 2026-05-28 | UCMR5 Analytical Results: LAKEWOOD - CITY, WATER DEPT. (CA1910239) |
| Perfluorohexanesulfonic acid (PFHxS) | 3.4 ng/L | 10 ng/L federal MCL (2024) | 2025-11-25 to 2026-05-28 | UCMR5 Analytical Results: LAKEWOOD - CITY, WATER DEPT. (CA1910239) |
29 other contaminants tested — none detected
Perfluorooctanesulfonic acid (PFOS)
- Result
- 18.5 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Sampled
- 2025-11-25 to 2026-05-28
Perfluorohexanesulfonic acid (PFHxS)
- Result
- 3.4 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Sampled
- 2025-11-25 to 2026-05-28
29 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
- 2025-11-25 to 2026-05-28
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
- Result
- < 5 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Sampled
- 2025-11-25 to 2026-05-28
- Result
- Non-Detect (ND)
- Benchmark
- 15 µg/L federal action level
- Sampled
- 2022–2024 monitoring period
- Result
- < 9 µg/L
- Benchmark
- 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit
- Sampled
- 2025-11-25 to 2026-04-16
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-04-16
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
- Result
- < 6 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-04-16
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
- Result
- < 20 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
Perfluoro-3-methoxypropanoic acid (PFMPA)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
Perfluoro-4-methoxybutanoic acid (PFMBA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
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
- 2025-11-25 to 2026-05-28
- Result
- < 5 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
Perfluorododecanoic acid (PFDoA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
Perfluoroheptanesulfonic acid (PFHpS)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
Perfluoroheptanoic acid (PFHpA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
Perfluorohexanoic acid (PFHxA)
- Result
- < 3 ng/L
- Benchmark
- 400,000 ng/L Michigan EGLE state MCL (strictest US state)
- Sampled
- 2025-11-25 to 2026-05-28
- Result
- < 4 ng/L
- Benchmark
- 10 ng/L federal MCL (2024)
- Sampled
- 2025-11-25 to 2026-05-28
- Result
- < 4 ng/L
- Benchmark
- 4.0 ng/L federal MCL (2024)
- Sampled
- 2025-11-25 to 2026-05-28
Perfluoropentanesulfonic acid (PFPeS)
- Result
- < 4 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
Perfluoropentanoic acid (PFPeA)
- Result
- < 3 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
Perfluorotetradecanoic acid (PFTA)
- Result
- < 8 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-04-16
Perfluorotridecanoic acid (PFTrDA)
- Result
- < 7 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-04-16
Perfluoroundecanoic acid (PFUnA)
- Result
- < 2 ng/L
- Benchmark
- No federal or state limit; shown for transparency
- Sampled
- 2025-11-25 to 2026-05-28
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: LAKEWOOD - CITY, WATER DEPT. (CA1910239)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: LAKEWOOD - CITY, WATER DEPT. (CA1910239)
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 Lakewood - City, Water Dept. reported something related, it's shown below.
- Rotten-egg smell
- Cloudy or milky water
- Chlorine smell
- Brown or yellow water
- Metallic taste
Lead at Lakewood - City, Water Dept.: not detected (90th percentile, 2022–2024 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.