PlainWater
States → Idaho

Transient Non-Community Water System · PWS ID3380032

Black Canyon Stinker

Caldwell, Idaho 83607 - drinking water served from groundwater sources to 100 people, tracked in EPA SDWIS and UCMR5.

100
People served
117
EPA violations
24
Health-based
Untested
UCMR5 result

The verdict

EPA records 117 drinking-water violations at Black Canyon Stinker, 21% of them health-based - above the Idaho per-system average.

117
Total EPA violations on record
21%
Health-based (MCL / treatment failure)
100
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Black Canyon Stinker

Black Canyon Stinker is a private-owned transient non-community water system that delivers drinking water to 100 residents in Caldwell, Idaho (Payette County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 117 total violations for this system , of which 24 (21%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 88 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 Revised Total Coliform Rule, recorded in 52 violations (MON). 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%).

Black Canyon Stinker's 117 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
100
Total Violations
117
Health-Based Violations
24
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
1
County
Payette
School/Daycare
No
MCL Violations
11
Monitoring Violations
88
Treatment Tech Violations
13

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 52 2023
Coliform (TCR) MR 18 2015
Nitrate MR 15 2023
Coliform (TCR) MCL 11 2013
Revised Total Coliform Rule TT 7 2021
Groundwater Rule TT 6 2012
Public Notice Other 4 2021
Nitrite MR 3 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 Black Canyon Stinker.

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 ID3380032 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 Revised Total Coliform Rule MON 52 SDWIS / ID3380032 / 8000
2023 Nitrate MR 15 SDWIS / ID3380032 / 1040
2021 Revised Total Coliform Rule TT 7 SDWIS / ID3380032 / 8000
2021 Public Notice Other 4 SDWIS / ID3380032 / 7500
2020 Nitrite MR 3 SDWIS / ID3380032 / 1041
2015 Coliform (TCR) MR 18 SDWIS / ID3380032 / 3100
2013 Coliform (TCR) MCL 11 SDWIS / ID3380032 / 3100
2012 Groundwater Rule TT 6 SDWIS / ID3380032 / 0700

How Black Canyon Stinker Compares

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

Metric Black Canyon Stinker Idaho avg Federal benchmark
Total violations 117 52.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 24 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 100 870 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 Black Canyon Stinker water safe to drink? ▼
Black Canyon Stinker (PWS ID: ID3380032) has 117 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 100 people using Groundwater sources.
How many people does Black Canyon Stinker serve? ▼
Black Canyon Stinker serves 100 people in Caldwell, Idaho. It is a Private-owned system using Groundwater water sources with 1 service connections.
What type of violations does Black Canyon Stinker have? ▼
Black Canyon Stinker has 117 total violations: 24 health-based violations (MCL exceedances or treatment failures), 88 monitoring/reporting violations, and 13 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Black Canyon Stinker water? ▼
No PFAS testing data is available for Black Canyon Stinker under the EPA's UCMR5 monitoring program.
What water source does Black Canyon Stinker use? ▼
Black Canyon Stinker uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.