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Community Water System · PWS OR4105879

McDougal Water System

Prineville, Oregon 97754 - drinking water served from groundwater sources to 60 people, tracked in EPA SDWIS and UCMR5.

60
People served
88
EPA violations
6
Health-based
Untested
UCMR5 result

The verdict

EPA records 88 drinking-water violations at McDougal Water System, 7% of them health-based - above the Oregon per-system average.

88
Total EPA violations on record
7%
Health-based (MCL / treatment failure)
60
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: McDougal Water System

McDougal Water System is a private-owned community water system that delivers drinking water to 60 residents in Prineville, Oregon (Crook County) through 28 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 88 total violations for this system , of which 6 (7%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 81 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 Coliform (TCR), recorded in 4 violations (MCL, health-based). 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%).

McDougal Water System's 88 violations sit above 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
60
Total Violations
88
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
28
County
Crook
School/Daycare
No
MCL Violations
6
Monitoring Violations
81
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 4 2009
Coliform (TCR) MR 4 1998
Barium MR 2 2005
Cadmium MR 2 2005
Mercury MR 2 2005
Antimony, Total MR 2 2005
Beryllium, Total MR 2 2005
CYANIDE MR 2 2005
Selenium MR 2 2005
Lead and Copper Rule MR 2 2000
Revised Total Coliform Rule MCL 2 2025
Nickel MR 2 2005
Fluoride MR 2 2005
Chromium MR 2 2005
Dinoseb MR 1 1996
Diquat MR 1 1996
Endothall MR 1 1996
Endrin MR 1 1996
Methoxychlor MR 1 1996
Di(2-ethylhexyl) phthalate MR 1 1996
Picloram MR 1 1996
Simazine MR 1 1996
OXAMYL MR 1 1996
1,2-Dichloroethane MR 1 1996
1,2,4-Trichlorobenzene MR 1 1996
Benzene MR 1 1996
Ethylbenzene MR 1 1996
Styrene MR 1 1996
Tetrachloroethylene MR 1 1996
Toluene MR 1 1996

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 McDougal Water System.

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 OR4105879 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
2025 Revised Total Coliform Rule MCL 2 SDWIS / OR4105879 / 8000
2025 E. COLI MR 1 SDWIS / OR4105879 / 3014
2025 Revised Total Coliform Rule MON 1 SDWIS / OR4105879 / 8000
2023 Consumer Confidence Rule Other 1 SDWIS / OR4105879 / 7000
2009 Coliform (TCR) MCL 4 SDWIS / OR4105879 / 3100
2005 Barium MR 2 SDWIS / OR4105879 / 1010
2005 Cadmium MR 2 SDWIS / OR4105879 / 1015
2005 Mercury MR 2 SDWIS / OR4105879 / 1035
2005 Antimony, Total MR 2 SDWIS / OR4105879 / 1074
2005 Beryllium, Total MR 2 SDWIS / OR4105879 / 1075
2005 CYANIDE MR 2 SDWIS / OR4105879 / 1024
2005 Selenium MR 2 SDWIS / OR4105879 / 1045
2005 Nickel MR 2 SDWIS / OR4105879 / 1036
2005 Fluoride MR 2 SDWIS / OR4105879 / 1025
2005 Chromium MR 2 SDWIS / OR4105879 / 1020

How McDougal Water System Compares

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

Metric McDougal Water System Oregon avg Federal benchmark
Total violations 88 82.1 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 6 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 60 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 McDougal Water System water safe to drink? ▼
McDougal Water System (PWS ID: OR4105879) has 88 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 60 people using Groundwater sources.
How many people does McDougal Water System serve? ▼
McDougal Water System serves 60 people in Prineville, Oregon. It is a Private-owned system using Groundwater water sources with 28 service connections.
What type of violations does McDougal Water System have? ▼
McDougal Water System has 88 total violations: 6 health-based violations (MCL exceedances or treatment failures), 81 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in McDougal Water System water? ▼
No PFAS testing data is available for McDougal Water System under the EPA's UCMR5 monitoring program.
What water source does McDougal Water System use? ▼
McDougal Water System 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.