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OAK HILL, VILLAGE OF

PWS ID: OH4000411 · OAK HILL, Ohio 45656

OAK HILL, VILLAGE OF serves 3,067 people in OAK HILL, Ohio using Groundwater water sources. It has 112 recorded EPA violations, including 8 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: OAK HILL, VILLAGE OF

OAK HILL, VILLAGE OF is a local-owned community water system that delivers drinking water to 3,067 residents in OAK HILL, Ohio (Jackson County) through 1,257 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 112 total violations for this system , of which 8 (7%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 94 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Total Haloacetic Acids (HAA5), recorded in 14 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

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. OAK HILL, VILLAGE OF's 112 violations sit above the Ohio average. Statewide, 204 of 346 UCMR5-tested systems have reported PFAS detections (59%). 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
3,067
Total Violations
112
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,257
County
Jackson
School/Daycare
No
MCL Violations
4
Monitoring Violations
94
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Total Haloacetic Acids (HAA5) MR 14 2013
Coliform (TCR) MR 10 2007
TTHM MR 8 2013
Lead and Copper Rule MR 6 2005
Consumer Confidence Rule Other 5 2020
Coliform (TCR) MCL 4 1994
Mercury MR 4 1988
Nitrate MR 4 1988
Selenium MR 4 1988
Fluoride MR 4 1988
Barium MR 4 1988
Cadmium MR 4 1988
Chromium MR 4 1988
Di(2-ethylhexyl) phthalate MR 4 1994
Arsenic MR 4 1988
Surface Water Treatment Rule TT 4 1993
Endrin MR 3 1988
BHC-GAMMA MR 3 1988
Toxaphene MR 3 1988
2,4,5-TP MR 3 1988
2,4-D MR 3 1988
Methoxychlor MR 3 1988
Stage 2 Disinfectants and Disinfection Byproducts Rule MR 2 2010

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 OAK HILL, VILLAGE OF.

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 OH4000411 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 OAK HILL, VILLAGE OF 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
2020 Consumer Confidence Rule Other 5 SDWIS / OH4000411 / 7000
2013 Total Haloacetic Acids (HAA5) MR 14 SDWIS / OH4000411 / 2456
2013 TTHM MR 8 SDWIS / OH4000411 / 2950
2010 Stage 2 Disinfectants and Disinfection Byproducts Rule MR 2 SDWIS / OH4000411 / 0600
2007 Coliform (TCR) MR 10 SDWIS / OH4000411 / 3100
2005 Lead and Copper Rule MR 6 SDWIS / OH4000411 / 5000
1994 Coliform (TCR) MCL 4 SDWIS / OH4000411 / 3100
1994 Di(2-ethylhexyl) phthalate MR 4 SDWIS / OH4000411 / 2039
1993 Surface Water Treatment Rule TT 4 SDWIS / OH4000411 / 0200
1988 Mercury MR 4 SDWIS / OH4000411 / 1035
1988 Nitrate MR 4 SDWIS / OH4000411 / 1040
1988 Selenium MR 4 SDWIS / OH4000411 / 1045
1988 Fluoride MR 4 SDWIS / OH4000411 / 1025
1988 Barium MR 4 SDWIS / OH4000411 / 1010
1988 Cadmium MR 4 SDWIS / OH4000411 / 1015

How OAK HILL, VILLAGE OF Compares

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

Metric OAK HILL, VILLAGE OF Ohio avg Federal benchmark
Total violations 112 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 8 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 3,067 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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is OAK HILL, VILLAGE OF water safe to drink? ▼
OAK HILL, VILLAGE OF (PWS ID: OH4000411) has 112 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,067 people using Groundwater sources.
How many people does OAK HILL, VILLAGE OF serve? ▼
OAK HILL, VILLAGE OF serves 3,067 people in OAK HILL, Ohio. It is a Local-owned system using Groundwater water sources with 1,257 service connections.
What type of violations does OAK HILL, VILLAGE OF have? ▼
OAK HILL, VILLAGE OF has 112 total violations: 8 health-based violations (MCL exceedances or treatment failures), 94 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in OAK HILL, VILLAGE OF water? ▼
No PFAS testing data is available for OAK HILL, VILLAGE OF under the EPA's UCMR5 monitoring program.
What water source does OAK HILL, VILLAGE OF use? ▼
OAK HILL, VILLAGE OF uses Groundwater 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.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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

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