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Community Water System · PWS NC0368152

Oak Grove MHP

Chapel Hill, North Carolina 27516 - drinking water served from groundwater sources to 64 people, tracked in EPA SDWIS and UCMR5.

64
People served
332
EPA violations
12
Health-based
Untested
UCMR5 result

The verdict

EPA records 332 drinking-water violations at Oak Grove MHP, 4% of them health-based - above the North Carolina per-system average.

332
Total EPA violations on record
4%
Health-based (MCL / treatment failure)
64
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Oak Grove MHP

Oak Grove MHP is a private-owned community water system that delivers drinking water to 64 residents in Chapel Hill, North Carolina (Orange County) through 25 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 332 total violations for this system , of which 12 (4%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 256 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Public Notice, recorded in 48 violations (Other). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across North Carolina, EPA tracks 5,020 public water systems serving 9,877,724 people, with 524,053 cumulative violations and 38,492 health-based violations on record. About 93% of systems in the state carry at least one violation, and state-wide the average per system is 104.4 violations. Statewide, 174 of 287 UCMR5-tested systems have reported PFAS detections (60.6%).

Oak Grove MHP's 332 violations sit above the North Carolina 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
64
Total Violations
332
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
25
County
Orange
School/Daycare
No
MCL Violations
6
Monitoring Violations
256
Treatment Tech Violations
6

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Public Notice Other 48 2024
Lead and Copper Rule MR 43 2024
Gross Alpha, Excl. Radon and U MR 28 2008
Combined Radium (-226 and -228) MR 28 2008
Radium-226 MR 27 2008
Combined Uranium MR 27 2008
Radium-228 MR 27 2008
Di(2-ethylhexyl) phthalate MR 22 2008
Coliform (TCR) MR 15 2002
Consumer Confidence Rule Other 14 2021
Methoxychlor MR 9 2008
Endrin MR 9 2008
Revised Total Coliform Rule MON 8 2025
Coliform (TCR) MCL 6 2009
Lead and Copper Rule TT 6 2005
Nitrate MR 5 2012
Asbestos MR 4 2020
E. COLI MR 3 2020
Gross Beta Particle Activity MR 1 1980

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 Grove MHP.

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 NC0368152 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

North Carolina Drinking Water Authority

North Carolina DEQ, Public Water Supply Section is the primacy agency that licenses and inspects Oak Grove MHP under EPA-delegated authority.

Open NC regulator portal

Source: North Carolina DEQ, Public Water Supply Section

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
2025 Revised Total Coliform Rule MON 8 SDWIS / NC0368152 / 8000
2024 Public Notice Other 48 SDWIS / NC0368152 / 7500
2024 Lead and Copper Rule MR 43 SDWIS / NC0368152 / 5000
2021 Consumer Confidence Rule Other 14 SDWIS / NC0368152 / 7000
2020 Asbestos MR 4 SDWIS / NC0368152 / 1094
2020 E. COLI MR 3 SDWIS / NC0368152 / 3014
2012 Nitrate MR 5 SDWIS / NC0368152 / 1040
2009 Coliform (TCR) MCL 6 SDWIS / NC0368152 / 3100
2008 Gross Alpha, Excl. Radon and U MR 28 SDWIS / NC0368152 / 4000
2008 Combined Radium (-226 and -228) MR 28 SDWIS / NC0368152 / 4010
2008 Radium-226 MR 27 SDWIS / NC0368152 / 4020
2008 Combined Uranium MR 27 SDWIS / NC0368152 / 4006
2008 Radium-228 MR 27 SDWIS / NC0368152 / 4030
2008 Di(2-ethylhexyl) phthalate MR 22 SDWIS / NC0368152 / 2039
2008 Methoxychlor MR 9 SDWIS / NC0368152 / 2015

How Oak Grove MHP Compares

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

Metric Oak Grove MHP North Carolina avg Federal benchmark
Total violations 332 104.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 7.7 Indicates a contaminant exceeded a federal MCL
PFAS detection None 60.6% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 64 1,968 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 5,020 regulated public water systems in North Carolina.

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 Oak Grove MHP water safe to drink? ▼
Oak Grove MHP (PWS ID: NC0368152) has 332 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 64 people using Groundwater sources.
How many people does Oak Grove MHP serve? ▼
Oak Grove MHP serves 64 people in Chapel Hill, North Carolina. It is a Private-owned system using Groundwater water sources with 25 service connections.
What type of violations does Oak Grove MHP have? ▼
Oak Grove MHP has 332 total violations: 12 health-based violations (MCL exceedances or treatment failures), 256 monitoring/reporting violations, and 6 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Oak Grove MHP water? ▼
No PFAS testing data is available for Oak Grove MHP under the EPA's UCMR5 monitoring program.
What water source does Oak Grove MHP use? ▼
Oak Grove MHP 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.
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.

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.