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Community Water System · PWS ID1280046

Chateaux Water Assn Inc

Hayden, Idaho 83835 - drinking water served from groundwater sources to 275 people, tracked in EPA SDWIS and UCMR5.

275
People served
26
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 26 drinking-water violations at Chateaux Water Assn Inc, 12% of them health-based - below the Idaho per-system average.

26
Total EPA violations on record
12%
Health-based (MCL / treatment failure)
275
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Chateaux Water Assn Inc

Chateaux Water Assn Inc is a private-owned community water system that delivers drinking water to 275 residents in Hayden, Idaho (Kootenai County) through 110 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 26 total violations for this system , of which 3 (12%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 22 monitoring and reporting violations are on file. The most recent violation on record dates to 2023.

The most frequently cited contaminant at this system is Chlorine, recorded in 5 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%).

Chateaux Water Assn Inc's 26 violations sit below 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
275
Total Violations
26
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
110
County
Kootenai
School/Daycare
No
MCL Violations
3
Monitoring Violations
22
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Chlorine MR 5 2023
Coliform (TCR) MR 5 2011
Coliform (TCR) MCL 3 2008
TTHM MR 2 2008
Total Haloacetic Acids (HAA5) MR 2 2008
Fluoride MR 1 1979
Arsenic MR 1 1979
Nitrate MR 1 1979
Cadmium MR 1 1979
Chromium MR 1 1979
Barium MR 1 1979
Mercury MR 1 1979
Selenium MR 1 1979
Public Notice Other 1 2012

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 Chateaux Water Assn Inc.

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 ID1280046 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
2023 Chlorine MR 5 SDWIS / ID1280046 / 0999
2012 Public Notice Other 1 SDWIS / ID1280046 / 7500
2011 Coliform (TCR) MR 5 SDWIS / ID1280046 / 3100
2008 Coliform (TCR) MCL 3 SDWIS / ID1280046 / 3100
2008 TTHM MR 2 SDWIS / ID1280046 / 2950
2008 Total Haloacetic Acids (HAA5) MR 2 SDWIS / ID1280046 / 2456
1979 Fluoride MR 1 SDWIS / ID1280046 / 1025
1979 Arsenic MR 1 SDWIS / ID1280046 / 1005
1979 Nitrate MR 1 SDWIS / ID1280046 / 1040
1979 Cadmium MR 1 SDWIS / ID1280046 / 1015
1979 Chromium MR 1 SDWIS / ID1280046 / 1020
1979 Barium MR 1 SDWIS / ID1280046 / 1010
1979 Mercury MR 1 SDWIS / ID1280046 / 1035
1979 Selenium MR 1 SDWIS / ID1280046 / 1045

How Chateaux Water Assn Inc Compares

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

Metric Chateaux Water Assn Inc Idaho avg Federal benchmark
Total violations 26 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 275 870 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 Chateaux Water Assn Inc water safe to drink? ▼
Chateaux Water Assn Inc (PWS ID: ID1280046) has 26 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 275 people using Groundwater sources.
How many people does Chateaux Water Assn Inc serve? ▼
Chateaux Water Assn Inc serves 275 people in Hayden, Idaho. It is a Private-owned system using Groundwater water sources with 110 service connections.
What type of violations does Chateaux Water Assn Inc have? ▼
Chateaux Water Assn Inc has 26 total violations: 3 health-based violations (MCL exceedances or treatment failures), 22 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Chateaux Water Assn Inc water? ▼
No PFAS testing data is available for Chateaux Water Assn Inc under the EPA's UCMR5 monitoring program.
What water source does Chateaux Water Assn Inc use? ▼
Chateaux Water Assn Inc 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.