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Non-Transient Non-Community Water System · PWS MT0002062

Whitewater School Dist 20Aa D

Whitewater, Montana 59544 - drinking water served from groundwater sources to 125 people, tracked in EPA SDWIS and UCMR5.

125
People served
750
EPA violations
1
Health-based
Untested
UCMR5 result

The verdict

EPA records 750 drinking-water violations at Whitewater School Dist 20Aa D - above the Montana per-system average.

750
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
125
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Whitewater School Dist 20Aa D

Whitewater School Dist 20Aa D is a local-owned non-transient non-community water system that delivers drinking water to 125 residents in Whitewater, Montana (Phillips County) through 6 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 750 total violations for this system , of which 1 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 742 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 128 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 Montana, EPA tracks 2,263 public water systems serving 1,112,267 people, with 297,270 cumulative violations and 25,922 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 131.4 violations. Statewide, 28 of 45 UCMR5-tested systems have reported PFAS detections (62.2%).

Whitewater School Dist 20Aa D's 750 violations sit above the Montana 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
125
Total Violations
750
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
6
County
Phillips
School/Daycare
Yes
MCL Violations
1
Monitoring Violations
742
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 128 2019
Coliform (TCR) MR 37 2007
Nitrate-Nitrite MR 23 2006
Chlorine MR 13 2013
1,2,4-Trichlorobenzene MR 9 2014
cis-1,2-Dichloroethylene MR 9 2014
Xylenes, Total MR 9 2014
o-Dichlorobenzene MR 9 2014
p-Dichlorobenzene MR 9 2014
Vinyl chloride MR 9 2014
1,1-Dichloroethylene MR 9 2014
1,2-Dichloroethane MR 9 2014
Carbon tetrachloride MR 9 2014
1,1,2-Trichloroethane MR 9 2014
Tetrachloroethylene MR 9 2014
CHLOROBENZENE MR 9 2014
Ethylbenzene MR 9 2014
Styrene MR 9 2014
Endrin MR 9 2014
BHC-GAMMA MR 9 2014
Methoxychlor MR 9 2014
Toxaphene MR 9 2014
Dalapon MR 9 2014
OXAMYL MR 9 2014
Simazine MR 9 2014
Dinoseb MR 9 2014
Hexachlorocyclopentadiene MR 9 2014
Carbofuran MR 9 2014
Heptachlor MR 9 2014
Heptachlor epoxide MR 9 2014

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 Whitewater School Dist 20Aa D.

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 MT0002062 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Montana Drinking Water Authority

Montana'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 MT 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
2019 Lead and Copper Rule MR 128 SDWIS / MT0002062 / 5000
2014 1,2,4-Trichlorobenzene MR 9 SDWIS / MT0002062 / 2378
2014 cis-1,2-Dichloroethylene MR 9 SDWIS / MT0002062 / 2380
2014 Xylenes, Total MR 9 SDWIS / MT0002062 / 2955
2014 o-Dichlorobenzene MR 9 SDWIS / MT0002062 / 2968
2014 p-Dichlorobenzene MR 9 SDWIS / MT0002062 / 2969
2014 Vinyl chloride MR 9 SDWIS / MT0002062 / 2976
2014 1,1-Dichloroethylene MR 9 SDWIS / MT0002062 / 2977
2014 1,2-Dichloroethane MR 9 SDWIS / MT0002062 / 2980
2014 Carbon tetrachloride MR 9 SDWIS / MT0002062 / 2982
2014 1,1,2-Trichloroethane MR 9 SDWIS / MT0002062 / 2985
2014 Tetrachloroethylene MR 9 SDWIS / MT0002062 / 2987
2014 CHLOROBENZENE MR 9 SDWIS / MT0002062 / 2989
2014 Ethylbenzene MR 9 SDWIS / MT0002062 / 2992
2014 Styrene MR 9 SDWIS / MT0002062 / 2996

How Whitewater School Dist 20Aa D Compares

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

Metric Whitewater School Dist 20Aa D Montana avg Federal benchmark
Total violations 750 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 1 11.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 62.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 125 492 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 2,263 regulated public water systems in Montana.

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 Whitewater School Dist 20Aa D water safe to drink? ▼
Whitewater School Dist 20Aa D (PWS ID: MT0002062) has 750 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 125 people using Groundwater sources.
How many people does Whitewater School Dist 20Aa D serve? ▼
Whitewater School Dist 20Aa D serves 125 people in Whitewater, Montana. It is a Local-owned system using Groundwater water sources with 6 service connections.
What type of violations does Whitewater School Dist 20Aa D have? ▼
Whitewater School Dist 20Aa D has 750 total violations: 1 health-based violations (MCL exceedances or treatment failures), 742 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Whitewater School Dist 20Aa D water? ▼
No PFAS testing data is available for Whitewater School Dist 20Aa D under the EPA's UCMR5 monitoring program.
What water source does Whitewater School Dist 20Aa D use? ▼
Whitewater School Dist 20Aa D uses Groundwater as its primary water source. It is classified as a Non-Transient Non-Community Water System, serving the same people for at least 6 months per year.
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.