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Community Water System · PWS OR4100608

Otter Rock Water District

Newberg, Oregon 97132 - drinking water served from groundwater sources to 175 people, tracked in EPA SDWIS and UCMR5.

175
People served
32
EPA violations
10
Health-based
Untested
UCMR5 result

The verdict

EPA records 32 drinking-water violations at Otter Rock Water District, 31% of them health-based - below the Oregon per-system average.

32
Total EPA violations on record
31%
Health-based (MCL / treatment failure)
175
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Otter Rock Water District

Otter Rock Water District is a local-owned community water system that delivers drinking water to 175 residents in Newberg, Oregon (Lincoln County) through 151 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 32 total violations for this system , of which 10 (31%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 18 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 10 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%).

Otter Rock Water District's 32 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
175
Total Violations
32
Health-Based Violations
10
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
151
County
Lincoln
School/Daycare
No
MCL Violations
10
Monitoring Violations
18
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 10 2016
Coliform (TCR) MR 5 2005
E. COLI MR 5 2019
COLIPHAGE MR 3 2024
Consumer Confidence Rule Other 1 2024
Total Haloacetic Acids (HAA5) MR 1 2024
Lead and Copper Rule MR 1 2024
Combined Radium (-226 and -228) MR 1 1976
TTHM MR 1 2024
Gross Alpha, Excl. Radon and U MR 1 1976

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 Otter Rock Water District.

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 OR4100608 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
2024 COLIPHAGE MR 3 SDWIS / OR4100608 / 3028
2024 Consumer Confidence Rule Other 1 SDWIS / OR4100608 / 7000
2024 Total Haloacetic Acids (HAA5) MR 1 SDWIS / OR4100608 / 2456
2024 Lead and Copper Rule MR 1 SDWIS / OR4100608 / 5000
2024 TTHM MR 1 SDWIS / OR4100608 / 2950
2019 E. COLI MR 5 SDWIS / OR4100608 / 3014
2016 Coliform (TCR) MCL 10 SDWIS / OR4100608 / 3100
2005 Coliform (TCR) MR 5 SDWIS / OR4100608 / 3100
1976 Combined Radium (-226 and -228) MR 1 SDWIS / OR4100608 / 4010
1976 Gross Alpha, Excl. Radon and U MR 1 SDWIS / OR4100608 / 4000

How Otter Rock Water District Compares

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

Metric Otter Rock Water District Oregon avg Federal benchmark
Total violations 32 82.1 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 10 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 175 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 Otter Rock Water District water safe to drink? ▼
Otter Rock Water District (PWS ID: OR4100608) has 32 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 175 people using Groundwater sources.
How many people does Otter Rock Water District serve? ▼
Otter Rock Water District serves 175 people in Newberg, Oregon. It is a Local-owned system using Groundwater water sources with 151 service connections.
What type of violations does Otter Rock Water District have? ▼
Otter Rock Water District has 32 total violations: 10 health-based violations (MCL exceedances or treatment failures), 18 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Otter Rock Water District water? ▼
No PFAS testing data is available for Otter Rock Water District under the EPA's UCMR5 monitoring program.
What water source does Otter Rock Water District use? ▼
Otter Rock Water District 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.