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Community Water System · PWS ID5070023

Heatherlands Subd

Ketchum, Idaho 83340 - drinking water served from groundwater sources to 134 people, tracked in EPA SDWIS and UCMR5.

134
People served
48
EPA violations
5
Health-based
Untested
UCMR5 result

The verdict

EPA records 48 drinking-water violations at Heatherlands Subd, 10% of them health-based - below the Idaho per-system average.

48
Total EPA violations on record
10%
Health-based (MCL / treatment failure)
134
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Heatherlands Subd

Heatherlands Subd is a private-owned community water system that delivers drinking water to 134 residents in Ketchum, Idaho (Blaine County) through 126 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 48 total violations for this system , of which 5 (10%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 37 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 20 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%).

Heatherlands Subd's 48 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
134
Total Violations
48
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
126
County
Blaine
School/Daycare
No
MCL Violations
0
Monitoring Violations
37
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 20 2007
Lead and Copper Rule MR 8 1998
Nitrate MR 6 2006
Groundwater Rule TT 5 2018
Gross Alpha, Excl. Radon and U MR 2 2014
Consumer Confidence Rule Other 2 1999
Nitrite MR 1 1993

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 Heatherlands Subd.

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 ID5070023 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
2018 Groundwater Rule TT 5 SDWIS / ID5070023 / 0700
2014 Gross Alpha, Excl. Radon and U MR 2 SDWIS / ID5070023 / 4000
2007 Coliform (TCR) MR 20 SDWIS / ID5070023 / 3100
2006 Nitrate MR 6 SDWIS / ID5070023 / 1040
1999 Consumer Confidence Rule Other 2 SDWIS / ID5070023 / 7000
1998 Lead and Copper Rule MR 8 SDWIS / ID5070023 / 5000
1993 Nitrite MR 1 SDWIS / ID5070023 / 1041

How Heatherlands Subd Compares

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

Metric Heatherlands Subd Idaho avg Federal benchmark
Total violations 48 52.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 5 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 134 870 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 Heatherlands Subd water safe to drink? ▼
Heatherlands Subd (PWS ID: ID5070023) has 48 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 134 people using Groundwater sources.
How many people does Heatherlands Subd serve? ▼
Heatherlands Subd serves 134 people in Ketchum, Idaho. It is a Private-owned system using Groundwater water sources with 126 service connections.
What type of violations does Heatherlands Subd have? ▼
Heatherlands Subd has 48 total violations: 5 health-based violations (MCL exceedances or treatment failures), 37 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Heatherlands Subd water? ▼
No PFAS testing data is available for Heatherlands Subd under the EPA's UCMR5 monitoring program.
What water source does Heatherlands Subd use? ▼
Heatherlands Subd 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.