Perfluorooctanoic acid
9.3ng/L
Each block = 4.0 ng/L federal MCL (2024)
Short answer: PFOA is above its federal limit (a 2024 limit that water systems have until at least 2029 to meet); lithium sits above a screening level. Commerce-City, Water Dept. serves 3,598 residents.
Your water bill or annual water quality report names your actual supplier.
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.
9.3ng/L
Each block = 4.0 ng/L federal MCL (2024)
COMMERCE-CITY, WATER DEPT. (EPA PWSID CA1910050) delivers surface water to 3,598 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.
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.
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.
A tap test can confirm levels at your home before you choose treatment.
PFOA 9.3 ng/L, above the 4 ng/L limit (+5 more PFAS detected)
Lithium 65.7 µg/L, above the 10.0 µg/L EPA health reference level
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
Silver Lake Research
Lead, bacteria, nitrate, copper, iron, chlorine, hardness and pH
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 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.
When your results arrive, read them here →
Each card names which Commerce 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.









PurityMap does not give a safe/unsafe verdict; it shows what the public records measured. For Commerce, PFOA 9.3 ng/L was measured above the 4 ng/L federal limit in EPA's 2024 testing. COMMERCE-CITY, WATER DEPT. (PWSID CA1910050) 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.
COMMERCE-CITY, WATER DEPT. (PWS ID CA1910050) is the public water system on record for Commerce, California, serving about 3,598 people. Confirm the utility on your water bill before acting on a specific finding.
Surface water (primary source of record in EPA SDWIS).
Yes. In EPA's UCMR 5 testing (2024-02-21 to 2024-11-06), PFOA was measured at 9.3 ng/L against a 4 ng/L federal limit. PFBS (9.7 ng/L, below the 2,000 ng/L EPA health advisory) and PFHxA (13.6 ng/L, below the 400,000 ng/L state limit) were also detected. PFBA (7.5 ng/L), PFHpA (5.1 ng/L) and PFPeA (17.4 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.
Lead is not in Commerce'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.
PurityMap's current record for Commerce holds 31 findings: 2 above a reference, 2 detected within the reference, 3 detected with no limit and 24 not detected. Each finding links to its dated public record; a parameter that was never monitored is shown as pending, not as a pass.
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| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 65.7 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 | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorooctanoic acid (PFOA) | 9.3 ng/L | 4.0 ng/L federal MCL (2024) | Above a historical reference; current applicability unverified | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorobutanesulfonic acid (PFBS) | 9.7 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 | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorohexanoic acid (PFHxA) | 13.6 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorobutanoic acid (PFBA) | 7.5 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluoroheptanoic acid (PFHpA) | 5.1 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluoropentanoic acid (PFPeA) | 17.4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| 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 | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| 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 | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| 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 | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| 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 | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| 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 | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | Not detected above the reporting limit | 2024–2026 monitoring period (still open) | Lead & Copper Rule 90th-percentile: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-21 to 2024-11-06 | UCMR5 Analytical Results: COMMERCE-CITY, WATER DEPT. (CA1910050) |
Perfluorobutanesulfonic acid (PFBS)
Perfluorohexanoic acid (PFHxA)
Perfluoroheptanoic acid (PFHpA)
Perfluoropentanoic acid (PFPeA)
11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS)
1H, 1H, 2H, 2H-perfluorodecane sulfonic acid (8:2 FTS)
1H, 1H, 2H, 2H-perfluorohexane sulfonic acid (4:2 FTS)
1H, 1H, 2H, 2H-perfluorooctane sulfonic acid (6:2 FTS)
4,8-Dioxa-3H-perfluorononanoic acid (ADONA)
9-Chlorohexadecafluoro-3-oxanone-1-sulfonic acid (9Cl-PF3ONS)
Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals)
N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA)
N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA)
Nonafluoro-3,6-dioxaheptanoic acid (NFDHA)
Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA)
Perfluoro-3-methoxypropanoic acid (PFMPA)
Perfluoro-4-methoxybutanoic acid (PFMBA)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorooctanesulfonic acid (PFOS)
Perfluoropentanesulfonic acid (PFPeS)
Perfluorotetradecanoic acid (PFTA)
Perfluorotridecanoic acid (PFTrDA)
Perfluoroundecanoic acid (PFUnA)
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: COMMERCE-CITY, WATER DEPT. (CA1910050)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: COMMERCE-CITY, WATER DEPT. (CA1910050)
US EPA SDWIS
Methodology: how we analyze water. Prepared with AI assistance and reviewed by the PurityMap Editorial Team before publication.
Start with the hot-or-cold tap check. Where Commerce-City, Water Dept. reported something related, it's shown below.
Lead at Commerce-City, Water Dept.: not detected (90th percentile, 2024–2026 monitoring period (still open)). Lead has no taste, so a taste neither shows nor rules it out.