PlainWater
States → Idaho

Transient Non-Community Water System · PWS ID7220005

Yellowstone Golf Resort

Ashton, Idaho 83420 - drinking water served from groundwater sources to 63 people, tracked in EPA SDWIS and UCMR5.

63
People served
53
EPA violations
5
Health-based
Untested
UCMR5 result

The verdict

EPA records 53 drinking-water violations at Yellowstone Golf Resort, 9% of them health-based - above the Idaho per-system average.

53
Total EPA violations on record
9%
Health-based (MCL / treatment failure)
63
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Yellowstone Golf Resort

Yellowstone Golf Resort is a private-owned transient non-community water system that delivers drinking water to 63 residents in Ashton, Idaho (Fremont County) through 41 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 53 total violations for this system , of which 5 (9%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 47 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 Nitrate, recorded in 24 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%).

Yellowstone Golf Resort's 53 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
63
Total Violations
53
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
41
County
Fremont
School/Daycare
No
MCL Violations
1
Monitoring Violations
47
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 24 2022
Revised Total Coliform Rule MON 12 2025
Coliform (TCR) MR 6 2013
E. COLI MR 4 2010
Revised Total Coliform Rule TT 4 2017
Nitrite MR 1 2002
Coliform (TCR) MCL 1 1999

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 Yellowstone Golf Resort.

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 ID7220005 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 12 SDWIS / ID7220005 / 8000
2022 Nitrate MR 24 SDWIS / ID7220005 / 1040
2017 Revised Total Coliform Rule TT 4 SDWIS / ID7220005 / 8000
2013 Coliform (TCR) MR 6 SDWIS / ID7220005 / 3100
2010 E. COLI MR 4 SDWIS / ID7220005 / 3014
2002 Nitrite MR 1 SDWIS / ID7220005 / 1041
1999 Coliform (TCR) MCL 1 SDWIS / ID7220005 / 3100

How Yellowstone Golf Resort Compares

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

Metric Yellowstone Golf Resort Idaho avg Federal benchmark
Total violations 53 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 63 870 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 Yellowstone Golf Resort water safe to drink? ▼
Yellowstone Golf Resort (PWS ID: ID7220005) has 53 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 63 people using Groundwater sources.
How many people does Yellowstone Golf Resort serve? ▼
Yellowstone Golf Resort serves 63 people in Ashton, Idaho. It is a Private-owned system using Groundwater water sources with 41 service connections.
What type of violations does Yellowstone Golf Resort have? ▼
Yellowstone Golf Resort has 53 total violations: 5 health-based violations (MCL exceedances or treatment failures), 47 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Yellowstone Golf Resort water? ▼
No PFAS testing data is available for Yellowstone Golf Resort under the EPA's UCMR5 monitoring program.
What water source does Yellowstone Golf Resort use? ▼
Yellowstone Golf Resort 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.