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Community Water System · PWS OH5201903

Medina Co/Northwest PWS

Medina, Ohio 44258 - drinking water served from surface water sources to 46,324 people, tracked in EPA SDWIS and UCMR5.

46,324
People served
27
EPA violations
4
Health-based
1 PFAS
UCMR5 result

The verdict

EPA records 27 drinking-water violations at Medina Co/Northwest PWS, 15% of them health-based - below the Ohio per-system average, and UCMR5 testing detected 1 PFAS compound.

27
Total EPA violations on record
15%
Health-based (MCL / treatment failure)
46,324
People served by this system
1
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Medina Co/Northwest PWS

Medina Co/Northwest PWS is a local-owned community water system that delivers drinking water to 46,324 residents in Medina, Ohio (Medina County) through 16,845 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 27 total violations for this system , of which 4 (15%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 13 monitoring and reporting violations are on file. The most recent violation on record dates to 2022.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 7 violations (MR). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 15.5 ppt (parts per trillion). PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.

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%).

Medina Co/Northwest PWS's 27 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.

PFAS Detected

1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.

Population Served
46,324
Total Violations
27
Health-Based Violations
4
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
16,845
County
Medina
School/Daycare
No
MCL Violations
4
Monitoring Violations
13
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 7 2011
Coliform (TCR) MCL 4 1994
TTHM MR 3 2019
Total Haloacetic Acids (HAA5) MR 3 2019
Consumer Confidence Rule Other 2 2022
Public Notice Other 1 2020

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 66 samples detected PFAS.

Contaminant Date Result MRL Status
PFHpS 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxA 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeS 8/17/2023 <4.00 ppt 4.00 ppt Not Detected
NFDHA 8/17/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 8/17/2023 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 8/17/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 8/17/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 8/17/2023 <2.00 ppt 2.00 ppt Not Detected
PFNA 8/17/2023 <4.00 ppt 4.00 ppt Not Detected
PFBA 8/17/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 8/17/2023 <5.00 ppt 5.00 ppt Not Detected
ADONA 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 8/17/2023 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 8/17/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 8/17/2023 <7.00 ppt 7.00 ppt Not Detected
PFDoA 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFOA 8/17/2023 <4.00 ppt 4.00 ppt Not Detected
PFTA 8/17/2023 <8.00 ppt 8.00 ppt Not Detected
PFDA 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
NEtFOSAA 8/17/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 8/17/2023 <6.00 ppt 6.00 ppt Not Detected
PFBS 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 8/17/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 8/17/2023 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 5/28/2025 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 5/28/2025 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 5/28/2025 <6.00 ppt 6.00 ppt Not Detected
PFTA 5/28/2025 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 2/23/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 2/23/2023 <5.00 ppt 5.00 ppt Not Detected
NMeFOSAA 2/23/2023 <6.00 ppt 6.00 ppt Not Detected
PFTA 2/23/2023 <8.00 ppt 8.00 ppt Not Detected
PFTA 11/29/2023 <8.00 ppt 8.00 ppt Not Detected
NMeFOSAA 11/29/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 11/29/2023 <5.00 ppt 5.00 ppt Not Detected
PFUnA 11/29/2023 <2.00 ppt 2.00 ppt Not Detected
PFTrDA 11/29/2023 <7.00 ppt 7.00 ppt Not Detected
11Cl-PF3OUdS 11/29/2023 <5.00 ppt 5.00 ppt Not Detected
8:2 FTS 11/29/2023 <5.00 ppt 5.00 ppt Not Detected
NFDHA 11/29/2023 <20.00 ppt 20.00 ppt Not Detected
PFEESA 11/29/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 11/29/2023 <3.00 ppt 3.00 ppt Not Detected
PFPeA 11/29/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 11/29/2023 <4.00 ppt 4.00 ppt Not Detected
6:2 FTS 11/29/2023 <5.00 ppt 5.00 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 Medina Co/Northwest 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 OH5201903 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 Medina Co/Northwest 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
2022 Consumer Confidence Rule Other 2 SDWIS / OH5201903 / 7000
2020 Public Notice Other 1 SDWIS / OH5201903 / 7500
2019 TTHM MR 3 SDWIS / OH5201903 / 2950
2019 Total Haloacetic Acids (HAA5) MR 3 SDWIS / OH5201903 / 2456
2011 Coliform (TCR) MR 7 SDWIS / OH5201903 / 3100
1994 Coliform (TCR) MCL 4 SDWIS / OH5201903 / 3100

How Medina Co/Northwest PWS Compares

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

Metric Medina Co/Northwest PWS Ohio avg Federal benchmark
Total violations 27 69 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 4 12.5 Indicates a contaminant exceeded a federal MCL
PFAS detection 1 compound 59% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 46,324 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 Medina Co/Northwest PWS water safe to drink?
Medina Co/Northwest PWS (PWS ID: OH5201903) has 27 recorded violations in the EPA SDWIS database. PFAS contamination has been detected in UCMR5 testing, with 1 PFAS compound found. This system serves 46,324 people using Surface Water sources.
How many people does Medina Co/Northwest PWS serve?
Medina Co/Northwest PWS serves 46,324 people in Medina, Ohio. It is a Local-owned system using Surface Water water sources with 16,845 service connections.
What type of violations does Medina Co/Northwest PWS have?
Medina Co/Northwest PWS has 27 total violations: 4 health-based violations (MCL exceedances or treatment failures), 13 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Medina Co/Northwest PWS water?
Yes. UCMR5 testing detected 1 PFAS compound in Medina Co/Northwest PWS's water supply: PFBA. PFAS are persistent "forever chemicals" that do not break down in the environment.
What water source does Medina Co/Northwest PWS use?
Medina Co/Northwest 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.
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.