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Community Water System · PWS ID2250017

Elk City Water and Sewer Assn

Elk City, Idaho 83525 - drinking water served from surface water sources to 320 people, tracked in EPA SDWIS and UCMR5.

320
People served
337
EPA violations
206
Health-based
Untested
UCMR5 result

The verdict

EPA records 337 drinking-water violations at Elk City Water and Sewer Assn, 61% of them health-based - above the Idaho per-system average.

337
Total EPA violations on record
61%
Health-based (MCL / treatment failure)
320
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Elk City Water and Sewer Assn

Elk City Water and Sewer Assn is a private-owned community water system that delivers drinking water to 320 residents in Elk City, Idaho (Idaho County) through 145 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 337 total violations for this system , of which 206 (61%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 128 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 CARBON, TOTAL, recorded in 157 violations (TT, 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 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%).

Elk City Water and Sewer Assn's 337 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
320
Total Violations
337
Health-Based Violations
206
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Private
Connections
145
County
Idaho
School/Daycare
No
MCL Violations
4
Monitoring Violations
128
Treatment Tech Violations
202

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
CARBON, TOTAL TT 157 2023
Cryptosporidium MR 80 2020
Surface Water Treatment Rule TT 40 2005
CARBON, TOTAL MR 11 2023
Chlorine MR 6 2020
Groundwater Rule TT 5 2018
Nitrate MR 4 2015
TTHM MCL 4 2017
Surface Water Treatment Rule MR 4 2020
Total Haloacetic Acids (HAA5) MR 3 2025
Coliform (TCR) MR 3 2008
TTHM MR 3 2025
2,4-D MR 1 1979
Cadmium MR 1 1979
Mercury MR 1 1979
Endrin MR 1 1979
Toxaphene MR 1 1979
Chromium MR 1 1979
Gross Alpha, Excl. Radon and U MR 1 1979
Barium MR 1 1979
BHC-GAMMA MR 1 1979
Methoxychlor MR 1 1979
Selenium MR 1 1979
Arsenic MR 1 1979
2,4,5-TP MR 1 1979
Fluoride MR 1 1979

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 Elk City Water and Sewer Assn.

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 ID2250017 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
2025 Total Haloacetic Acids (HAA5) MR 3 SDWIS / ID2250017 / 2456
2025 TTHM MR 3 SDWIS / ID2250017 / 2950
2023 CARBON, TOTAL TT 157 SDWIS / ID2250017 / 2920
2023 CARBON, TOTAL MR 11 SDWIS / ID2250017 / 2920
2020 Cryptosporidium MR 80 SDWIS / ID2250017 / 3015
2020 Chlorine MR 6 SDWIS / ID2250017 / 0999
2020 Surface Water Treatment Rule MR 4 SDWIS / ID2250017 / 0200
2018 Groundwater Rule TT 5 SDWIS / ID2250017 / 0700
2017 TTHM MCL 4 SDWIS / ID2250017 / 2950
2015 Nitrate MR 4 SDWIS / ID2250017 / 1040
2008 Coliform (TCR) MR 3 SDWIS / ID2250017 / 3100
2005 Surface Water Treatment Rule TT 40 SDWIS / ID2250017 / 0200
1979 2,4-D MR 1 SDWIS / ID2250017 / 2105
1979 Cadmium MR 1 SDWIS / ID2250017 / 1015
1979 Mercury MR 1 SDWIS / ID2250017 / 1035

How Elk City Water and Sewer Assn Compares

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

Metric Elk City Water and Sewer Assn Idaho avg Federal benchmark
Total violations 337 52.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 206 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 320 870 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 Elk City Water and Sewer Assn water safe to drink? ▼
Elk City Water and Sewer Assn (PWS ID: ID2250017) has 337 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 320 people using Surface Water sources.
How many people does Elk City Water and Sewer Assn serve? ▼
Elk City Water and Sewer Assn serves 320 people in Elk City, Idaho. It is a Private-owned system using Surface Water water sources with 145 service connections.
What type of violations does Elk City Water and Sewer Assn have? ▼
Elk City Water and Sewer Assn has 337 total violations: 206 health-based violations (MCL exceedances or treatment failures), 128 monitoring/reporting violations, and 202 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Elk City Water and Sewer Assn water? ▼
No PFAS testing data is available for Elk City Water and Sewer Assn under the EPA's UCMR5 monitoring program.
What water source does Elk City Water and Sewer Assn use? ▼
Elk City Water and Sewer Assn uses Surface Water 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.