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Community Water System · PWS OH4700003

Amherst City PWS

Amherst, Ohio 44001 - drinking water served from surface water sources to 11,797 people, tracked in EPA SDWIS and UCMR5.

11,797
People served
9
EPA violations
0
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 9 drinking-water violations at Amherst City PWS - below the Ohio per-system average.

9
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
11,797
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Amherst City PWS

Amherst City PWS is a local-owned community water system that delivers drinking water to 11,797 residents in Amherst, Ohio (Lorain County) through 6,100 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 9 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 6 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 6 violations (MR). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

Across Ohio, EPA tracks 4,181 public water systems serving 11,085,226 people, with 288,388 cumulative violations and 52,412 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. Statewide, 204 of 346 UCMR5-tested systems have reported PFAS detections (59%).

Amherst City PWS's 9 violations sit below the Ohio average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
11,797
Total Violations
9
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
6,100
County
Lorain
School/Daycare
No
MCL Violations
0
Monitoring Violations
6
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 6 2009
Consumer Confidence Rule Other 3 2021

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 232 samples detected PFAS.

Contaminant Date Result MRL Status
PFHxA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFDA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFOS 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 7/26/2023 <2.00 ppt 2.00 ppt Not Detected
PFBS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 7/26/2023 <20.00 ppt 20.00 ppt Not Detected
11Cl-PF3OUdS 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
PFPeA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
PFBA 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 7/26/2023 <2.00 ppt 2.00 ppt Not Detected
4:2 FTS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeS 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFHpA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFNA 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 7/26/2023 <20.00 ppt 20.00 ppt Not Detected
ADONA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFUnA 7/26/2023 <2.00 ppt 2.00 ppt Not Detected
PFOA 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFDA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFDoA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFBA 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 7/26/2023 <2.00 ppt 2.00 ppt Not Detected
HFPO-DA 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 7/26/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 7/26/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 7/26/2023 <3.00 ppt 3.00 ppt Not Detected

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Amherst City PWS.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID OH4700003 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Ohio Drinking Water Authority

Ohio EPA, Division of Drinking and Ground Waters is the primacy agency that licenses and inspects Amherst City PWS under EPA-delegated authority.

Open OH regulator portal

Source: Ohio EPA, Division of Drinking and Ground Waters

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2021 Consumer Confidence Rule Other 3 SDWIS / OH4700003 / 7000
2009 Lead and Copper Rule MR 6 SDWIS / OH4700003 / 5000

How Amherst City PWS Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Amherst City PWS Ohio avg Federal benchmark
Total violations 9 69 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 12.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 59% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 11,797 2,651 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,181 regulated public water systems in Ohio.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Amherst City PWS water safe to drink? ▼
Amherst City PWS (PWS ID: OH4700003) has 9 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 11,797 people using Surface Water sources.
How many people does Amherst City PWS serve? ▼
Amherst City PWS serves 11,797 people in Amherst, Ohio. It is a Local-owned system using Surface Water water sources with 6,100 service connections.
What type of violations does Amherst City PWS have? ▼
Amherst City PWS has 9 total violations: 0 health-based violations (MCL exceedances or treatment failures), 6 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Amherst City PWS water? ▼
No. Amherst City PWS was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Amherst City PWS use? ▼
Amherst City PWS uses Surface Water as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. PFAS data from EPA UCMR5 monitoring program (2023-2025). This data is provided for informational purposes only.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This system's figures are rendered directly from EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.