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Community Water System · PWS OR4100369

Heppner, City Of

Heppner, Oregon 97836 - drinking water served from groundwater sources to 1,187 people, tracked in EPA SDWIS and UCMR5.

1,187
People served
92
EPA violations
37
Health-based
Untested
UCMR5 result

The verdict

EPA records 92 drinking-water violations at Heppner, City Of, 40% of them health-based - above the Oregon per-system average.

92
Total EPA violations on record
40%
Health-based (MCL / treatment failure)
1,187
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Heppner, City Of

Heppner, City Of is a local-owned community water system that delivers drinking water to 1,187 residents in Heppner, Oregon (Morrow County) through 705 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 92 total violations for this system , of which 37 (40%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 49 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 37 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%).

Heppner, City Of's 92 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
1,187
Total Violations
92
Health-Based Violations
37
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
705
County
Morrow
School/Daycare
No
MCL Violations
37
Monitoring Violations
49
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 37 2011
Coliform (TCR) MR 28 2007
Nitrate MR 7 2006
Consumer Confidence Rule Other 3 2003
Lead and Copper Rule MR 3 2003
Total Polychlorinated Biphenyls (PCB) MR 2 2005
2,4,5-TP MR 2 2005
LASSO MR 2 2005
COLIPHAGE MR 1 2016
Revised Total Coliform Rule MON 1 2019
E. COLI MR 1 2014
Gross Alpha, Excl. Radon and U MR 1 1976
Combined Radium (-226 and -228) 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 Heppner, City 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 OR4100369 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
2019 Revised Total Coliform Rule MON 1 SDWIS / OR4100369 / 8000
2016 COLIPHAGE MR 1 SDWIS / OR4100369 / 3028
2014 E. COLI MR 1 SDWIS / OR4100369 / 3014
2011 Coliform (TCR) MCL 37 SDWIS / OR4100369 / 3100
2007 Coliform (TCR) MR 28 SDWIS / OR4100369 / 3100
2006 Nitrate MR 7 SDWIS / OR4100369 / 1040
2005 Total Polychlorinated Biphenyls (PCB) MR 2 SDWIS / OR4100369 / 2383
2005 2,4,5-TP MR 2 SDWIS / OR4100369 / 2110
2005 LASSO MR 2 SDWIS / OR4100369 / 2051
2003 Consumer Confidence Rule Other 3 SDWIS / OR4100369 / 7000
2003 Lead and Copper Rule MR 3 SDWIS / OR4100369 / 5000
1976 Gross Alpha, Excl. Radon and U MR 1 SDWIS / OR4100369 / 4000
1976 Combined Radium (-226 and -228) MR 1 SDWIS / OR4100369 / 4010

How Heppner, City Of Compares

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

Metric Heppner, City Of Oregon avg Federal benchmark
Total violations 92 82.1 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 37 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 1,187 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 Heppner, City Of water safe to drink? ▼
Heppner, City Of (PWS ID: OR4100369) has 92 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,187 people using Groundwater sources.
How many people does Heppner, City Of serve? ▼
Heppner, City Of serves 1,187 people in Heppner, Oregon. It is a Local-owned system using Groundwater water sources with 705 service connections.
What type of violations does Heppner, City Of have? ▼
Heppner, City Of has 92 total violations: 37 health-based violations (MCL exceedances or treatment failures), 49 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Heppner, City Of water? ▼
No PFAS testing data is available for Heppner, City Of under the EPA's UCMR5 monitoring program.
What water source does Heppner, City Of use? ▼
Heppner, City 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.
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.