At least one open health-based violation as of 2026-10-15.
EPA record checked 2026-10-06
From EPA's record for CA4810003. PurityMap is independent of City of Fairfield.
Every community water system publishes one each year. Your water bill or the utility's website links to it.
As listed in EPA's records. Your water bill names your supplier.
A ZIP code is a postal area, not a water service area. Your water bill names your supplier.
Are you this utility? Correct this listing →
31 results are on record. These 5 come first.
| Contaminant | Result | Limit | 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 | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| 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 | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| 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 | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| 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 | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| 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 | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Lead (90th percentile) | Non-Detect (ND) | 15 µg/L federal action level | Not detected above the reporting limit | 2021–2023 monitoring period | Lead & Copper Rule 90th-percentile: CITY OF FAIRFIELD (CA4810003) |
| Lithium | < 9 µg/L | 10 µg/L EPA health reference level (screening, not a legal limit)Screening level, not a legal limit | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| 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 | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluorohexanoic acid (PFHxA) | < 3 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluorooctanoic acid (PFOA) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluoropentanoic acid (PFPeA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-01-23 to 2024-10-01 | UCMR5 Analytical Results: CITY OF FAIRFIELD (CA4810003) |
1health-based violation in the last 10 years · at least one open as of 2026-10-15
From EPA SDWIS. Counted once per contaminant per year in the Track record subject score. A violation record is a compliance fact, not a health verdict.
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: Brita Elite Water Filter Pitcher, certified for lead.
| Pick | Product | Certification | Price | Link |
|---|---|---|---|---|
| ★ Best choice | Brita Elite Water Filter Pitcher | Certified for Lead (NSF/ANSI 53, WQA) | $ | Check price on Amazon |
| Also good | Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M) | Certified for Lead (NSF/ANSI 53, WQA) | $$ | Check price at Aquasana |
| Also good | Aquasana Clean Water Machine Countertop Filter (AQ-CWM2) | Certified for Lead (NSF/ANSI 53, WQA) | $$ | Check price at Aquasana |
| Pick | Product | Certification | Price | Link |
|---|---|---|---|---|
| Also good | SmartFlow® Reverse Osmosis | Certified for lead (WQA) | $$$ | Check price at Aquasana |
| Also good | Waterdrop G3P600 Tankless Reverse-Osmosis System | Certified for Lead (NSF/ANSI 58-2024, IAPMO) | $$$ | Check price at Waterdrop |
| Also good | Waterdrop G3P800 Tankless Reverse-Osmosis System | Certified for Lead (NSF/ANSI 58-2024, IAPMO) | $$$ | Check price at Waterdrop |
| Also good | AquaTru Carafe Countertop Reverse-Osmosis Purifier (AT100) | Certified for Lead (NSF/ANSI 58, IAPMO) | $$$ | Check price on Amazon |
| Also good | AquaTru Classic Countertop Reverse-Osmosis Purifier (AT2000) | Certified for Lead (NSF/ANSI 58, IAPMO) | $$$ | Check price on Amazon |
| Also good | Aquasana Claryum 2-Stage Under-Sink Filter (AQ-5200) | Certified for Lead (NSF/ANSI 53, WQA) | $$ | Check price on Amazon |
| Also good | Culligan ZeroWater 10-Cup Pitcher (ZEROP10) | Certified for Lead (NSF/ANSI 53, IAPMO) | $ | Check price on Amazon |
| Also good | Frizzlife SP99 Under-Sink Filter | Certified for Lead (NSF/ANSI 53-2024, IAPMO) | $$ | Check price on Amazon |
| Also good | PUR Plus Faucet Filter (FM2500V) | Certified for Lead (NSF/ANSI 53, IAPMO) | $ | Check price on Amazon |
| Also good | Patriot Pure Ultimate Water Filtration System | Certified for Lead (NSF/ANSI 53, NSF, IAPMO) | $$ | Check price on Amazon |
| Also good | iSpring RCC7AK Alkaline Reverse Osmosis SystemUse code REFISPRING at checkout: 10% off your first iSpring order. | Brand lab-tested, not independently certified for lead | $$ | Check price at iSpring |
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| Also good | Waterdrop X12 Reverse Osmosis System | Brand lab-tested, not independently certified for lead | $$$$ | Check price at Waterdrop |
★ Best available: iSpring WGB32B-PFKS PFAS & Heavy Metals Whole House Filter, the best fit here; nothing in this group is certified yet.
| Pick | Product | Certification | Price | Link |
|---|---|---|---|---|
| ★ Best available | iSpring WGB32B-PFKS PFAS & Heavy Metals Whole House FilterUse code REFISPRING at checkout: 10% off your first iSpring order. | Brand lab-tested, not independently certified for lead | $$$ | Check price at iSpring |
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.
Lead service lines
City of Fairfield reported 91 galvanized service lines to replace in EPA’s inventory (2026Q2). Many utilities replace these lines for free or share the cost. Ask City of Fairfield whether your home’s line is on its list before you pay anyone.
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 707-428-7485 and its mailing address is 1000 WEBSTER STREET, FAIRFIELD, CA 94533-4836. These details come from the system's EPA record.
PurityMap has no verified website for City of Fairfield. Its mailing address on EPA record is 1000 WEBSTER STREET, FAIRFIELD, CA 94533-4836. Your water bill lists the ways to pay. PurityMap does not take payments.
EPA's records list City of Fairfield as serving Fairfield, California. Your water bill names your supplier.
PurityMap's record for City of Fairfield holds results for 29 PFAS substances. None was detected, and none is above a federal legal limit. Each result links to its source in the city report.
At least one open health-based violation as of 2026-10-15: that is what EPA's record shows for City of Fairfield. The record comes from EPA's SDWIS compliance database.
City of Fairfield is on EPA record as drawing from surface water.
Start with the hot-or-cold tap check. Where City of Fairfield reported something related, it's shown below.
Lead at City of Fairfield: not detected (90th percentile, 2021–2023 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.