PlainWater
States → Montana

Non-Transient Non-Community Water System · PWS MT0000982

Arlee High School Dist No 8

Arlee, Montana 59821 - drinking water served from groundwater sources to 145 people, tracked in EPA SDWIS and UCMR5.

145
People served
339
EPA violations
6
Health-based
Untested
UCMR5 result

The verdict

EPA records 339 drinking-water violations at Arlee High School Dist No 8, 2% of them health-based - above the Montana per-system average.

339
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
145
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Arlee High School Dist No 8

Arlee High School Dist No 8 is a state-owned non-transient non-community water system that delivers drinking water to 145 residents in Arlee, Montana (Lake County) through 4 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 339 total violations for this system , of which 6 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 333 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 23 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%).

Arlee High School Dist No 8's 339 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
145
Total Violations
339
Health-Based Violations
6
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
State
Connections
4
County
Lake
School/Daycare
Yes
MCL Violations
1
Monitoring Violations
333
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 23 2024
Coliform (TCR) MR 13 2008
Dalapon MR 9 2008
Di(2-ethylhexyl) phthalate MR 9 2008
Picloram MR 9 2008
2,4-D MR 9 2008
2,4,5-TP MR 9 2008
Pentachlorophenol MR 9 2008
Dinoseb MR 9 2008
Endrin MR 7 2008
BHC-GAMMA MR 7 2008
Methoxychlor MR 7 2008
Toxaphene MR 7 2008
Di(2-ethylhexyl) adipate MR 7 2008
Simazine MR 7 2008
Hexachlorocyclopentadiene MR 7 2008
LASSO MR 7 2008
Heptachlor MR 7 2008
Heptachlor epoxide MR 7 2008
Chlordane MR 7 2008
Benzo(a)pyrene MR 7 2008
HEXACHLOROBENZENE MR 7 2008
Atrazine MR 7 2008
Lead and Copper Rule TT 5 2006
cis-1,2-Dichloroethylene MR 4 1999
DICHLOROMETHANE MR 4 1999
o-Dichlorobenzene MR 4 1999
p-Dichlorobenzene MR 4 1999
1,1-Dichloroethylene MR 4 1999
Carbon tetrachloride MR 4 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 Arlee High School Dist No 8.

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 MT0000982 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
2024 Lead and Copper Rule MR 23 SDWIS / MT0000982 / 5000
2013 Chlorine MR 3 SDWIS / MT0000982 / 0999
2008 Coliform (TCR) MR 13 SDWIS / MT0000982 / 3100
2008 Dalapon MR 9 SDWIS / MT0000982 / 2031
2008 Di(2-ethylhexyl) phthalate MR 9 SDWIS / MT0000982 / 2039
2008 Picloram MR 9 SDWIS / MT0000982 / 2040
2008 2,4-D MR 9 SDWIS / MT0000982 / 2105
2008 2,4,5-TP MR 9 SDWIS / MT0000982 / 2110
2008 Pentachlorophenol MR 9 SDWIS / MT0000982 / 2326
2008 Dinoseb MR 9 SDWIS / MT0000982 / 2041
2008 Endrin MR 7 SDWIS / MT0000982 / 2005
2008 BHC-GAMMA MR 7 SDWIS / MT0000982 / 2010
2008 Methoxychlor MR 7 SDWIS / MT0000982 / 2015
2008 Toxaphene MR 7 SDWIS / MT0000982 / 2020
2008 Di(2-ethylhexyl) adipate MR 7 SDWIS / MT0000982 / 2035

How Arlee High School Dist No 8 Compares

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

Metric Arlee High School Dist No 8 Montana avg Federal benchmark
Total violations 339 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 6 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 145 492 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 Arlee High School Dist No 8 water safe to drink? ▼
Arlee High School Dist No 8 (PWS ID: MT0000982) has 339 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 145 people using Groundwater sources.
How many people does Arlee High School Dist No 8 serve? ▼
Arlee High School Dist No 8 serves 145 people in Arlee, Montana. It is a State-owned system using Groundwater water sources with 4 service connections.
What type of violations does Arlee High School Dist No 8 have? ▼
Arlee High School Dist No 8 has 339 total violations: 6 health-based violations (MCL exceedances or treatment failures), 333 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Arlee High School Dist No 8 water? ▼
No PFAS testing data is available for Arlee High School Dist No 8 under the EPA's UCMR5 monitoring program.
What water source does Arlee High School Dist No 8 use? ▼
Arlee High School Dist No 8 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.