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States → Oregon

Transient Non-Community Water System · PWS OR4191072

Oprd Hat Rock State Park

Meacham, Oregon 97859 - drinking water served from groundwater sources to 500 people, tracked in EPA SDWIS and UCMR5.

500
People served
65
EPA violations
21
Health-based
Untested
UCMR5 result

The verdict

EPA records 65 drinking-water violations at Oprd Hat Rock State Park, 32% of them health-based - below the Oregon per-system average.

65
Total EPA violations on record
32%
Health-based (MCL / treatment failure)
500
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Oprd Hat Rock State Park

Oprd Hat Rock State Park is a state-owned transient non-community water system that delivers drinking water to 500 residents in Meacham, Oregon (Umatilla County) through 3 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 65 total violations for this system , of which 21 (32%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 39 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 22 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 Oregon, EPA tracks 2,518 public water systems serving 4,005,242 people, with 206,659 cumulative violations and 20,339 health-based violations on record. About 99% of systems in the state carry at least one violation, and state-wide the average per system is 82.1 violations. Statewide, 30 of 125 UCMR5-tested systems have reported PFAS detections (24%).

Oprd Hat Rock State Park's 65 violations sit below the Oregon 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
500
Total Violations
65
Health-Based Violations
21
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
State
Connections
3
County
Umatilla
School/Daycare
No
MCL Violations
21
Monitoring Violations
39
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 22 2015
Nitrate MCL 16 2021
Nitrate MR 9 2023
Coliform (TCR) MCL 5 2015
Revised Total Coliform Rule MON 5 2020
E. COLI MR 3 2023
Public Notice Other 2 2021

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 Oprd Hat Rock State Park.

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 OR4191072 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Oregon Drinking Water Authority

Oregon's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find OR regulator via EPA SDWIS

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
2023 Nitrate MR 9 SDWIS / OR4191072 / 1040
2023 E. COLI MR 3 SDWIS / OR4191072 / 3014
2021 Nitrate MCL 16 SDWIS / OR4191072 / 1040
2021 Public Notice Other 2 SDWIS / OR4191072 / 7500
2020 Revised Total Coliform Rule MON 5 SDWIS / OR4191072 / 8000
2015 Coliform (TCR) MR 22 SDWIS / OR4191072 / 3100
2015 Coliform (TCR) MCL 5 SDWIS / OR4191072 / 3100

How Oprd Hat Rock State Park Compares

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

Metric Oprd Hat Rock State Park Oregon avg Federal benchmark
Total violations 65 82.1 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 21 8.1 Indicates a contaminant exceeded a federal MCL
PFAS detection None 24% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 500 1,591 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,518 regulated public water systems in Oregon.

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 Oprd Hat Rock State Park water safe to drink? ▼
Oprd Hat Rock State Park (PWS ID: OR4191072) has 65 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 500 people using Groundwater sources.
How many people does Oprd Hat Rock State Park serve? ▼
Oprd Hat Rock State Park serves 500 people in Meacham, Oregon. It is a State-owned system using Groundwater water sources with 3 service connections.
What type of violations does Oprd Hat Rock State Park have? ▼
Oprd Hat Rock State Park has 65 total violations: 21 health-based violations (MCL exceedances or treatment failures), 39 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Oprd Hat Rock State Park water? ▼
No PFAS testing data is available for Oprd Hat Rock State Park under the EPA's UCMR5 monitoring program.
What water source does Oprd Hat Rock State Park use? ▼
Oprd Hat Rock State Park uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.