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Community Water System · PWS ID1280083

Harrison City Of

Plummer, Idaho 83851 - drinking water served from groundwater sources to 456 people, tracked in EPA SDWIS and UCMR5.

456
People served
132
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 132 drinking-water violations at Harrison City Of, 2% of them health-based - above the Idaho per-system average.

132
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
456
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Harrison City Of

Harrison City Of is a local-owned community water system that delivers drinking water to 456 residents in Plummer, Idaho (Kootenai County) through 190 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 132 total violations for this system , of which 3 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 126 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Chlorine, recorded in 18 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 Idaho, EPA tracks 2,005 public water systems serving 1,743,912 people, with 104,850 cumulative violations and 19,965 health-based violations on record. About 96% of systems in the state carry at least one violation, and state-wide the average per system is 52.3 violations. Statewide, 40 of 60 UCMR5-tested systems have reported PFAS detections (66.7%).

Harrison City Of's 132 violations sit above the Idaho 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
456
Total Violations
132
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
190
County
Kootenai
School/Daycare
No
MCL Violations
3
Monitoring Violations
126
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 18 2021
Revised Total Coliform Rule MON 9 2021
Nitrate MR 4 2007
Arsenic MR 4 2005
Coliform (TCR) MR 4 2006
cis-1,2-Dichloroethylene MR 3 2011
DICHLOROMETHANE MR 3 2011
1,1-Dichloroethylene MR 3 2011
trans-1,2-Dichloroethylene MR 3 2011
Carbon tetrachloride MR 3 2011
1,2-Dichloropropane MR 3 2011
Trichloroethylene MR 3 2011
1,1,2-Trichloroethane MR 3 2011
Benzene MR 3 2011
Toluene MR 3 2011
Ethylbenzene MR 3 2011
Coliform (TCR) MCL 3 2005
1,1,1-Trichloroethane MR 3 2011
CHLOROBENZENE MR 3 2011
1,2,4-Trichlorobenzene MR 3 2011
Vinyl chloride MR 3 2011
Styrene MR 3 2011
Tetrachloroethylene MR 3 2011
Xylenes, Total MR 3 2011
p-Dichlorobenzene MR 3 2011
o-Dichlorobenzene MR 3 2011
1,2-Dichloroethane MR 3 2011
Thallium, Total MR 2 2005
Nickel MR 2 2005
E. COLI MR 2 2020

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 Harrison 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 ID1280083 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Idaho Drinking Water Authority

Idaho'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 ID 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
2021 Chlorine MR 18 SDWIS / ID1280083 / 0999
2021 Revised Total Coliform Rule MON 9 SDWIS / ID1280083 / 8000
2020 E. COLI MR 2 SDWIS / ID1280083 / 3014
2011 cis-1,2-Dichloroethylene MR 3 SDWIS / ID1280083 / 2380
2011 DICHLOROMETHANE MR 3 SDWIS / ID1280083 / 2964
2011 1,1-Dichloroethylene MR 3 SDWIS / ID1280083 / 2977
2011 trans-1,2-Dichloroethylene MR 3 SDWIS / ID1280083 / 2979
2011 Carbon tetrachloride MR 3 SDWIS / ID1280083 / 2982
2011 1,2-Dichloropropane MR 3 SDWIS / ID1280083 / 2983
2011 Trichloroethylene MR 3 SDWIS / ID1280083 / 2984
2011 1,1,2-Trichloroethane MR 3 SDWIS / ID1280083 / 2985
2011 Benzene MR 3 SDWIS / ID1280083 / 2990
2011 Toluene MR 3 SDWIS / ID1280083 / 2991
2011 Ethylbenzene MR 3 SDWIS / ID1280083 / 2992
2011 1,1,1-Trichloroethane MR 3 SDWIS / ID1280083 / 2981

How Harrison City Of Compares

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

Metric Harrison City Of Idaho avg Federal benchmark
Total violations 132 52.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 10 Indicates a contaminant exceeded a federal MCL
PFAS detection None 66.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 456 870 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,005 regulated public water systems in Idaho.

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 Harrison City Of water safe to drink? ▼
Harrison City Of (PWS ID: ID1280083) has 132 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 456 people using Groundwater sources.
How many people does Harrison City Of serve? ▼
Harrison City Of serves 456 people in Plummer, Idaho. It is a Local-owned system using Groundwater water sources with 190 service connections.
What type of violations does Harrison City Of have? ▼
Harrison City Of has 132 total violations: 3 health-based violations (MCL exceedances or treatment failures), 126 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Harrison City Of water? ▼
No PFAS testing data is available for Harrison City Of under the EPA's UCMR5 monitoring program.
What water source does Harrison City Of use? ▼
Harrison 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.