No open EPA violations as of 2026-10-15.
EPA record checked 2026-10-06
From EPA's record for PA1230004. PurityMap is independent of Chester Water Authority.
Every community water system publishes one each year.
Read the report ↗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 →
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 |
|---|---|---|---|---|---|
| Perfluorooctanoic acid (PFOA) | 5.1 ng/L | 4.0 ng/L federal MCL (2024) | Above EPA's 2024 limit (one sample) | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Water hardness | 7 gpg | Aesthetic, no federal health limit | Above a secondary/aesthetic reference | 2025 | Chester Water Authority 2025 Consumer Confidence Report (CCR) |
| Lead (90th percentile) | 4.76 µg/L | 15 µg/L federal action level | Below the listed reference | 2025–2025 monitoring period | Lead & Copper Rule 90th-percentile: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluorobutanesulfonic acid (PFBS) | 4.5 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 | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluorohexanoic acid (PFHxA) | 3.9 ng/L | 400,000 ng/L Michigan EGLE state MCL (strictest US state) | Within a historical reference; current applicability unverified | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluoropentanoic acid (PFPeA) | 4.1 ng/L | No federal or state limit; shown for transparency | Detected, no limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| 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 | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| 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 | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| 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 | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| 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 | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| 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 | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Hexafluoropropylene oxide dimer acid (HFPO-DA) (GenX chemicals) | < 5 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| 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 | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | < 6 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | < 20 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluoro (2-ethoxyethane) sulfonic acid (PFEESA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluoro-3-methoxypropanoic acid (PFMPA) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluoro-4-methoxybutanoic acid (PFMBA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluorobutanoic acid (PFBA) | < 5 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluorodecanoic acid (PFDA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluorododecanoic acid (PFDoA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluoroheptanesulfonic acid (PFHpS) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluoroheptanoic acid (PFHpA) | < 3 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluorohexanesulfonic acid (PFHxS) | < 3 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluorononanoic acid (PFNA) | < 4 ng/L | 10 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluorooctanesulfonic acid (PFOS) | < 4 ng/L | 4.0 ng/L federal MCL (2024) | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluoropentanesulfonic acid (PFPeS) | < 4 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluorotetradecanoic acid (PFTA) | < 8 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluorotridecanoic acid (PFTrDA) | < 7 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
| Perfluoroundecanoic acid (PFUnA) | < 2 ng/L | No federal or state limit; shown for transparency | Not detected above the reporting limit | 2024-02-12 to 2024-11-13 | UCMR5 Analytical Results: CHESTER WATER AUTHORITY (PA1230004) |
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 and lead.
| Pick | Product | Certification | Price | Link |
|---|---|---|---|---|
| ★ Best choice | Aquasana Claryum 2-Stage Under-Sink Filter (AQ-5200) | Certified for PFOA (NSF/ANSI 53, WQA) | $$ | Check price on Amazon |
| Also good | Aquasana Claryum 3-Stage Max Flow Under-Sink Filter (AQ-6300M) | Certified for PFOA (NSF/ANSI 53, WQA) | $$ | Check price at Aquasana |
| Also good | Aquasana Clean Water Machine Countertop Filter (AQ-CWM2) | Certified for PFOA (NSF/ANSI 53, WQA) | $$ | Check price at Aquasana |
★ Best choice: HealthShield™, certified for PFOA.
| Pick | Product | Certification | Price | Link |
|---|---|---|---|---|
| ★ Best choice | HealthShield™ | Certified for PFOA (NSF/ANSI 53, WQA) | $$$$ | Check price at Aquasana |
| $ Budget pick | iSpring WGB32B-PFKS PFAS & Heavy Metals Whole House FilterUse code REFISPRING at checkout: 10% off your first iSpring order. | Brand lab-tested for PFAS, not independently certified for PFOA, Perfluorobutanesulfonic acid (PFBS), Perfluorohexanoic acid (PFHxA) and Perfluoropentanoic acid (PFPeA) | $$$ | 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.
Lead service lines
Chester Water Authority reported 148 lead and 1 galvanized service lines to replace in EPA’s inventory (2026Q2). Many utilities replace these lines for free or share the cost. Ask Chester Water Authority 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 610-876-8185 and its mailing address is PO BOX 467, CHESTER, PA 19016. These details come from the system's EPA record.
PurityMap has no verified website for Chester Water Authority. Its mailing address on EPA record is PO BOX 467, CHESTER, PA 19016. Your water bill lists the ways to pay. PurityMap does not take payments.
EPA's records list Chester Water Authority as serving Chester, Pennsylvania. Your water bill names your supplier.
PurityMap's record for Chester Water Authority holds results for 29 PFAS substances. 4 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 Chester Water Authority. The record comes from EPA's SDWIS compliance database.
Chester Water Authority is on EPA record as drawing from surface water.
Start with the hot-or-cold tap check. Where Chester Water Authority reported something related, it's shown below.
Lead at Chester Water Authority: 4.76 µg/L (90th percentile, 2025 monitoring period). Lead has no taste, so a taste neither shows nor rules it out.