No open EPA violations as of 2026-10-15.
EPA record checked 2026-10-06
From EPA's record for CA1910126. PurityMap is independent of City of Pomona.
Every community water system publishes one each year.
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32 results are on record. These 5 come first: results above a listed reference, then those closest to a legal limit.
| Contaminant | Result | Limit | Status | Sampled | Source |
|---|---|---|---|---|---|
| Perfluorooctanesulfonic acid (PFOS) | 18 ng/L | 4.0 ng/L federal MCL (2024) | Above EPA's 2024 limit (one sample) | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluorooctanoic acid (PFOA) | 7.1 ng/L | 4.0 ng/L federal MCL (2024) | Above EPA's 2024 limit (one sample) | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Water hardness | 9.7 gpg | Aesthetic, no federal health limit | Above a secondary/aesthetic reference | 2026 | City of Pomona Water Resources Department 2026 Consumer Confidence Report (CCR) |
| Lithium | 9.3 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Within the referenced health-based guidance value | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluorohexanesulfonic acid (PFHxS) | 7.9 ng/L | 10 ng/L federal MCL (2024) | At or below EPA's 2024 limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Lead (90th percentile) | 2.1 µg/L | 15 µg/L federal action level | Below the listed reference | 2023–2025 monitoring period | Lead & Copper Rule 90th-percentile: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluorobutanesulfonic acid (PFBS) | 3.2 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 | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluorohexanoic acid (PFHxA) | 4.1 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluoropentanoic acid (PFPeA) | 4.4 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| 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 | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| 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 | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| 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 | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| 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 | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| 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 | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2023-08-23 to 2024-05-15 | UCMR5 Analytical Results: POMONA - CITY, WATER DEPT. (CA1910126) |
0health-based violations in the last 10 years · none open as of 2026-10-15
From EPA SDWIS. A clean violation history means no enforcement action was recorded; it does not cover contaminants without a limit. Meeting a federal limit is a compliance fact, not a health clearance.
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 (EnviroTestKits)
Lead, read as one of three ranges: 0–4, 5–15 or 15+ ppb
Turnaround: 5 minutes
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
Environmental Testing and Research Laboratories (ETR Labs), Leominster, MA · ISO/IEC 17025:2017, ANAB certificate AT-2638 · 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.
Tested your own tap? Read your results →
★ Best choice: Aquasana Claryum 2-Stage Under-Sink Filter (AQ-5200), certified for PFOA, PFOS and lead.
| Pick | Product | Certification | Price | Link |
|---|---|---|---|---|
| ★ Best choice | Aquasana Claryum 2-Stage Under-Sink Filter (AQ-5200) | Certified for PFOA and PFOS (NSF/ANSI 53, WQA) | $$ | Check price on Amazon |
| Also good | Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M) | Certified for PFOA and PFOS (NSF/ANSI 53, WQA) | $$ | Check price at Aquasana |
| Also good | Aquasana Clean Water Machine Countertop Filter (AQ-CWM2) | Certified for PFOA and PFOS (NSF/ANSI 53, WQA) | $$ | Check price at Aquasana |
★ Best choice: HealthShield™, certified for PFOA, PFOS and PFHxS.
| Pick | Product | Certification | Price | Link |
|---|---|---|---|---|
| ★ Best choice | HealthShield™ | Certified for PFOA, PFOS and PFHxS (NSF/ANSI 53, WQA) | $$$$ | Check price at Aquasana |
| $ Budget pick | iSpring WGB32B-PFKS PFAS & Heavy Metals Whole House FilterUse code REFISPRING at checkout: 10% off your first iSpring order. | Brand lab-tested for PFAS, not independently certified for PFOA, PFOS, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA), PFHxS and Perfluoropentanoic acid (PFPeA) | $$$ | Check price at iSpring |
Also: lead picks →
PurityMap earns a commission from these links. "Best choice" and "Budget pick" go to certified products first; commission never decides them. As an Amazon Associate, PurityMap earns from qualifying purchases. Affiliate disclosure.
Local help
Call to be connected with a local plumbing provider about lead service lines, repiping or fixture replacement.
One email when a new sampling round is published or a result moves across its reference.
Follow this water →Its phone number on EPA record is 909-620-2248 and its mailing address is 752 COMMERCIAL ST., POMONA, CA 91768. These details come from the system's EPA record.
PurityMap has no verified website for City of Pomona. Its mailing address on EPA record is 752 COMMERCIAL ST., POMONA, CA 91768. Your water bill lists the ways to pay. PurityMap does not take payments.
EPA's records list City of Pomona as serving Pomona, California. Your water bill names your supplier.
PurityMap's record for City of Pomona holds results for 29 PFAS substances. 6 were detected, and none is above a federal legal limit. Each result links to its source in the city report.
No open EPA violations as of 2026-10-15: that is what EPA's record shows for City of Pomona. The record comes from EPA's SDWIS compliance database.
City of Pomona is on EPA record as drawing from surface water.
Start with the hot-or-cold tap check. Where City of Pomona reported something related, it's shown below.
Lead at City of Pomona: 2.1 µg/L (90th percentile, 2023–2025 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.