PlainWater

Community Water System · PWS ID7100039

Idaho Falls City Of

Idaho Falls, Idaho 83405 - drinking water served from groundwater sources to 69,450 people, tracked in EPA SDWIS and UCMR5.

69,450
People served
144
EPA violations
1
Health-based
No PFAS
UCMR5 result

The verdict

EPA records 144 drinking-water violations at Idaho Falls City Of, 1% of them health-based - above the Idaho per-system average.

144
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
69,450
People served by this system
0
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Idaho Falls City Of

Idaho Falls City Of is a local-owned community water system that delivers drinking water to 69,450 residents in Idaho Falls, Idaho (Bonneville County) through 26,464 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 144 total violations for this system , of which 1 (1%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 141 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Di(2-ethylhexyl) phthalate, recorded in 13 violations (MR). 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%).

Idaho Falls City Of's 144 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
69,450
Total Violations
144
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
26,464
County
Bonneville
School/Daycare
No
MCL Violations
1
Monitoring Violations
141
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Di(2-ethylhexyl) phthalate MR 13 2014
Pentachlorophenol MR 12 2014
2,4,5-TP MR 12 2014
2,4-D MR 12 2014
Atrazine MR 12 2014
Dinoseb MR 12 2014
Picloram MR 12 2014
Di(2-ethylhexyl) adipate MR 12 2014
Dalapon MR 11 2014
Chlorine MR 9 2020
Revised Total Coliform Rule MON 9 2020
Antimony, Total MR 2 1993
Beryllium, Total MR 2 1993
Nickel MR 2 1993
Thallium, Total MR 2 1993
Fluoride MR 1 1993
E. COLI MR 1 2010
Chromium MR 1 1993
Coliform (TCR) MCL 1 2000
Barium MR 1 1993
Mercury MR 1 1993
Cadmium MR 1 1993
Selenium MR 1 1993

PFAS Testing Results (UCMR5)

Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 870 samples detected PFAS.

Contaminant Date Result MRL Status
PFPeS 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
6:2 FTS 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
8:2 FTS 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFMPA 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
NMeFOSAA 4/9/2024 <6.00 ppt 6.00 ppt Not Detected
PFBA 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
NFDHA 4/9/2024 <20.00 ppt 20.00 ppt Not Detected
PFPeA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpS 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFTA 4/9/2024 <8.00 ppt 8.00 ppt Not Detected
PFTrDA 4/9/2024 <7.00 ppt 7.00 ppt Not Detected
NEtFOSAA 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFMBA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFOA 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFOS 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFEESA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFNA 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFBS 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFDA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFDoA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFUnA 4/9/2024 <2.00 ppt 2.00 ppt Not Detected
11Cl-PF3OUdS 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
9Cl-PF3ONS 4/9/2024 <2.00 ppt 2.00 ppt Not Detected
ADONA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFHxS 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
NMeFOSAA 4/9/2024 <6.00 ppt 6.00 ppt Not Detected
NEtFOSAA 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFTA 4/9/2024 <8.00 ppt 8.00 ppt Not Detected
PFOS 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFTrDA 4/9/2024 <7.00 ppt 7.00 ppt Not Detected
PFPeA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFHpS 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFPeS 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
NFDHA 4/9/2024 <20.00 ppt 20.00 ppt Not Detected
PFHxS 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFMBA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFBS 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
PFMPA 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
8:2 FTS 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
4:2 FTS 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
6:2 FTS 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFBA 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFOA 4/9/2024 <4.00 ppt 4.00 ppt Not Detected
PFEESA 4/9/2024 <3.00 ppt 3.00 ppt Not Detected
HFPO-DA 4/9/2024 <5.00 ppt 5.00 ppt Not Detected
PFHpA 4/9/2024 <3.00 ppt 3.00 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 Idaho Falls 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 ID7100039 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
2020 Chlorine MR 9 SDWIS / ID7100039 / 0999
2020 Revised Total Coliform Rule MON 9 SDWIS / ID7100039 / 8000
2014 Di(2-ethylhexyl) phthalate MR 13 SDWIS / ID7100039 / 2039
2014 Pentachlorophenol MR 12 SDWIS / ID7100039 / 2326
2014 2,4,5-TP MR 12 SDWIS / ID7100039 / 2110
2014 2,4-D MR 12 SDWIS / ID7100039 / 2105
2014 Atrazine MR 12 SDWIS / ID7100039 / 2050
2014 Dinoseb MR 12 SDWIS / ID7100039 / 2041
2014 Picloram MR 12 SDWIS / ID7100039 / 2040
2014 Di(2-ethylhexyl) adipate MR 12 SDWIS / ID7100039 / 2035
2014 Dalapon MR 11 SDWIS / ID7100039 / 2031
2010 E. COLI MR 1 SDWIS / ID7100039 / 3014
2000 Coliform (TCR) MCL 1 SDWIS / ID7100039 / 3100
1993 Antimony, Total MR 2 SDWIS / ID7100039 / 1074
1993 Beryllium, Total MR 2 SDWIS / ID7100039 / 1075

How Idaho Falls City Of Compares

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

Metric Idaho Falls City Of Idaho avg Federal benchmark
Total violations 144 52.3 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 1 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 69,450 870 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 Idaho Falls City Of water safe to drink?
Idaho Falls City Of (PWS ID: ID7100039) has 144 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 69,450 people using Groundwater sources.
How many people does Idaho Falls City Of serve?
Idaho Falls City Of serves 69,450 people in Idaho Falls, Idaho. It is a Local-owned system using Groundwater water sources with 26,464 service connections.
What type of violations does Idaho Falls City Of have?
Idaho Falls City Of has 144 total violations: 1 health-based violations (MCL exceedances or treatment failures), 141 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Idaho Falls City Of water?
No. Idaho Falls City Of was tested for PFAS under the EPA's UCMR5 monitoring program and no PFAS contamination was detected.
What water source does Idaho Falls City Of use?
Idaho Falls 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.
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.