Short answer: No measured result is above a legal limit; lithium sits above a screening level, and a past health-based violation (E. coli) is on record. Cal-Am Water Coronado serves 106,000 residents.
Your water bill or annual water quality report names your actual supplier.
Also supplies: Coronado
CAL-AM WATER CORONADO (EPA PWSID CA3710001) delivers surface water to 106,000 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.
1health-based violation in the last 10 years
From EPA SDWIS. Counted once per contaminant per year, as in the Track record score.
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.
Every filing is listed; the Track record score counts at most one per contaminant per year.
Resolved
to Resolved
Plumbing inside a home can add lead that the system record can't show. A tap test tells you what reaches your glass.
lead 2 µg/L, below the 15 µg/L action level
Lithium 65.5 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.
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Screening: quick check, not lab-grade
Safe Home (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
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 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 Imperial Beach 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 Imperial Beach, no regulated PFAS were detected in EPA's 2024 testing; the lead 90th-percentile result was 2 µg/L against the 15 µg/L action level; one health-based violation is on record (E. coli). CAL-AM WATER CORONADO (PWSID CA3710001) has a Purity Score of 95/100 (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.
CAL-AM WATER CORONADO (PWS ID CA3710001) is the public water system on record for Imperial Beach, California, serving about 106,000 people. Confirm the utility on your water bill before acting on a specific finding.
Surface water (primary source of record in EPA SDWIS).
None of the 29 PFAS in EPA's UCMR 5 testing (2023-08-02 to 2023-12-05) was detected. "Not detected" means below the lab's reporting limit, not proven zero.
CAL-AM WATER CORONADO's most recent lead 90th-percentile result (2024–2026) was 2 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.
The federal SDWIS record lists a health-based violation for CAL-AM WATER CORONADO within about the last ten years: E. coli (2023). The findings above show each one's status.
PurityMap's current record for Imperial Beach holds 32 findings: 2 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.
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| Contaminant | Result | Benchmark | Status | Sampled | Source |
|---|---|---|---|---|---|
| Lithium | 65.5 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 | 2023-03-14 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| E. coli | = | Federal MCL | Above the listed reference | 2023 | EPA SDWIS Violations & Enforcement: CAL-AM WATER CORONADO (CA3710001) |
| Lead (90th percentile) | 2 µg/L | 15 µg/L federal action level | Below the listed reference | 2024–2026 monitoring period (still open) | Lead & Copper Rule 90th-percentile: CAL-AM WATER CORONADO (CA3710001) |
| 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 | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| 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 | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| 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 | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| 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 | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| 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 | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorobutanesulfonic acid (PFBS) | < 3 ng/L | 2,000 ng/L EPA health advisory (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-03-14 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-02 to 2023-12-05 | UCMR5 Analytical Results: CAL-AM WATER CORONADO (CA3710001) |
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)
Perfluorobutanesulfonic acid (PFBS)
Perfluorododecanoic acid (PFDoA)
Perfluoroheptanesulfonic acid (PFHpS)
Perfluoroheptanoic acid (PFHpA)
Perfluorohexanesulfonic acid (PFHxS)
Perfluorohexanoic acid (PFHxA)
Perfluorooctanesulfonic acid (PFOS)
Perfluoropentanesulfonic acid (PFPeS)
Perfluoropentanoic acid (PFPeA)
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: CAL-AM WATER CORONADO (CA3710001)
US EPA
State SDWIS Compliance Record
Lead & Copper Rule 90th-percentile: CAL-AM WATER CORONADO (CA3710001)
US EPA SDWIS
State SDWIS Compliance Record
EPA SDWIS Violations & Enforcement: CAL-AM WATER CORONADO (CA3710001)
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 Cal-Am Water Coronado reported something related, it's shown below.
Lead at Cal-Am Water Coronado: 2 µg/L (90th percentile, 2024–2026 monitoring period (still open)). Lead has no taste, so a taste neither shows nor rules it out.
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.