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Community Water System · PWS ID5420007

Buhl City Of

Buhl, Idaho 83316 - drinking water served from groundwater sources to 4,518 people, tracked in EPA SDWIS and UCMR5.

4,518
People served
117
EPA violations
48
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 117 drinking-water violations at Buhl City Of, 41% of them health-based - above the Idaho per-system average.

117
Total EPA violations on record
41%
Health-based (MCL / treatment failure)
4,518
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Buhl City Of

Buhl City Of is a local-owned community water system that delivers drinking water to 4,518 residents in Buhl, Idaho (Twin Falls County) through 1,815 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 48 (41%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 54 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 Arsenic, recorded in 48 violations (MCL, health-based). This system was sampled under EPA's UCMR5 PFAS monitoring program and no PFAS compounds were detected above the minimum reporting level.

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%).

Buhl City Of'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
4,518
Total Violations
117
Health-Based Violations
48
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,815
County
Twin Falls
School/Daycare
No
MCL Violations
48
Monitoring Violations
54
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 48 2010
Coliform (TCR) MR 13 1998
Public Notice Other 8 2010
Lead and Copper Rule MR 7 2019
Arsenic MR 7 2011
TTHM MR 6 2023
Chlorine MR 6 2023
Total Haloacetic Acids (HAA5) MR 6 2023
Revised Total Coliform Rule MON 4 2025
Nitrate MR 3 2011
Nitrite MR 2 2014

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 290 samples detected PFAS.

Contaminant Date Result MRL Status
PFHpS 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFMPA 6/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFPeA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 6/27/2023 <20.00 ppt 20.00 ppt Not Detected
PFPeS 6/27/2023 <4.00 ppt 4.00 ppt Not Detected
NMeFOSAA 6/27/2023 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFTA 6/27/2023 <8.00 ppt 8.00 ppt Not Detected
PFDoA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 6/27/2023 <7.00 ppt 7.00 ppt Not Detected
PFDA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFHxS 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFNA 6/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFUnA 6/27/2023 <2.00 ppt 2.00 ppt Not Detected
PFOA 6/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFBA 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFHxA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
11Cl-PF3OUdS 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 6/27/2023 <2.00 ppt 2.00 ppt Not Detected
ADONA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFBS 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFOS 6/27/2023 <4.00 ppt 4.00 ppt Not Detected
ADONA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFMPA 6/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFBA 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
6:2 FTS 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
HFPO-DA 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
PFPeA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFMBA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFEESA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
NFDHA 6/27/2023 <20.00 ppt 20.00 ppt Not Detected
PFHpS 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
9Cl-PF3ONS 6/27/2023 <2.00 ppt 2.00 ppt Not Detected
PFTA 6/27/2023 <8.00 ppt 8.00 ppt Not Detected
PFPeS 6/27/2023 <4.00 ppt 4.00 ppt Not Detected
PFHxS 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFBS 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFHpA 6/27/2023 <3.00 ppt 3.00 ppt Not Detected
PFTrDA 6/27/2023 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 6/27/2023 <5.00 ppt 5.00 ppt Not Detected
11Cl-PF3OUdS 6/27/2023 <5.00 ppt 5.00 ppt Not Detected

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 Buhl 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 ID5420007 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 Revised Total Coliform Rule MON 4 SDWIS / ID5420007 / 8000
2023 TTHM MR 6 SDWIS / ID5420007 / 2950
2023 Chlorine MR 6 SDWIS / ID5420007 / 0999
2023 Total Haloacetic Acids (HAA5) MR 6 SDWIS / ID5420007 / 2456
2019 Lead and Copper Rule MR 7 SDWIS / ID5420007 / 5000
2014 Nitrite MR 2 SDWIS / ID5420007 / 1041
2011 Arsenic MR 7 SDWIS / ID5420007 / 1005
2011 Nitrate MR 3 SDWIS / ID5420007 / 1040
2010 Arsenic MCL 48 SDWIS / ID5420007 / 1005
2010 Public Notice Other 8 SDWIS / ID5420007 / 7500
1998 Coliform (TCR) MR 13 SDWIS / ID5420007 / 3100

How Buhl City Of Compares

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

Metric Buhl City Of Idaho avg Federal benchmark
Total violations 117 52.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 48 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 4,518 870 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 Buhl City Of water safe to drink? ▼
Buhl City Of (PWS ID: ID5420007) has 117 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 4,518 people using Groundwater sources.
How many people does Buhl City Of serve? ▼
Buhl City Of serves 4,518 people in Buhl, Idaho. It is a Local-owned system using Groundwater water sources with 1,815 service connections.
What type of violations does Buhl City Of have? ▼
Buhl City Of has 117 total violations: 48 health-based violations (MCL exceedances or treatment failures), 54 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Buhl City Of water? ▼
No. Buhl City Of was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Buhl City Of use? ▼
Buhl 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. PFAS data from EPA UCMR5 monitoring program (2023-2025). 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.