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Non-Transient Non-Community Water System · PWS MT0001386

Lavina School District

Lavina, Montana 59046 - drinking water served from groundwater sources to 94 people, tracked in EPA SDWIS and UCMR5.

94
People served
322
EPA violations
11
Health-based
Untested
UCMR5 result

The verdict

EPA records 322 drinking-water violations at Lavina School District, 3% of them health-based - above the Montana per-system average.

322
Total EPA violations on record
3%
Health-based (MCL / treatment failure)
94
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Lavina School District

Lavina School District is a local-owned non-transient non-community water system that delivers drinking water to 94 residents in Lavina, Montana (Golden Valley County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 322 total violations for this system , of which 11 (3%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 302 monitoring and reporting violations are on file. The most recent violation on record dates to 2017.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 34 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, 5 of 45 UCMR5-tested systems have reported PFAS detections (11.1%).

Lavina School District's 322 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
94
Total Violations
322
Health-Based Violations
11
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Golden Valley
School/Daycare
Yes
MCL Violations
11
Monitoring Violations
302
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 34 2015
Chlorine MR 24 2015
Lead and Copper Rule MR 12 2014
Coliform (TCR) MCL 11 2008
1,2,4-Trichlorobenzene MR 9 2008
DICHLOROMETHANE MR 9 2008
o-Dichlorobenzene MR 9 2008
p-Dichlorobenzene MR 9 2008
Vinyl chloride MR 9 2008
1,1-Dichloroethylene MR 9 2008
1,2-Dichloroethane MR 9 2008
1,1,1-Trichloroethane MR 9 2008
Carbon tetrachloride MR 9 2008
1,2-Dichloropropane MR 9 2008
Trichloroethylene MR 9 2008
Tetrachloroethylene MR 9 2008
Styrene MR 9 2008
Xylenes, Total MR 9 2008
trans-1,2-Dichloroethylene MR 9 2008
1,1,2-Trichloroethane MR 9 2008
CHLOROBENZENE MR 9 2008
Benzene MR 9 2008
Toluene MR 9 2008
Ethylbenzene MR 9 2008
cis-1,2-Dichloroethylene MR 9 2008
Nitrate-Nitrite MR 7 2017
Revised Total Coliform Rule RPT 3 2017
Nitrate MR 2 1998
Di(2-ethylhexyl) adipate MR 1 1996
Benzo(a)pyrene MR 1 1996

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 Lavina School District.

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 MT0001386 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
2017 Nitrate-Nitrite MR 7 SDWIS / MT0001386 / 1038
2017 Revised Total Coliform Rule RPT 3 SDWIS / MT0001386 / 8000
2015 Coliform (TCR) MR 34 SDWIS / MT0001386 / 3100
2015 Chlorine MR 24 SDWIS / MT0001386 / 0999
2014 Lead and Copper Rule MR 12 SDWIS / MT0001386 / 5000
2008 Coliform (TCR) MCL 11 SDWIS / MT0001386 / 3100
2008 1,2,4-Trichlorobenzene MR 9 SDWIS / MT0001386 / 2378
2008 DICHLOROMETHANE MR 9 SDWIS / MT0001386 / 2964
2008 o-Dichlorobenzene MR 9 SDWIS / MT0001386 / 2968
2008 p-Dichlorobenzene MR 9 SDWIS / MT0001386 / 2969
2008 Vinyl chloride MR 9 SDWIS / MT0001386 / 2976
2008 1,1-Dichloroethylene MR 9 SDWIS / MT0001386 / 2977
2008 1,2-Dichloroethane MR 9 SDWIS / MT0001386 / 2980
2008 1,1,1-Trichloroethane MR 9 SDWIS / MT0001386 / 2981
2008 Carbon tetrachloride MR 9 SDWIS / MT0001386 / 2982

How Lavina School District Compares

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

Metric Lavina School District Montana avg Federal benchmark
Total violations 322 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 11 11.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 11.1% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 94 492 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 Lavina School District water safe to drink? ▼
Lavina School District (PWS ID: MT0001386) has 322 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 94 people using Groundwater sources.
How many people does Lavina School District serve? ▼
Lavina School District serves 94 people in Lavina, Montana. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Lavina School District have? ▼
Lavina School District has 322 total violations: 11 health-based violations (MCL exceedances or treatment failures), 302 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Lavina School District water? ▼
No PFAS testing data is available for Lavina School District under the EPA's UCMR5 monitoring program.
What water source does Lavina School District use? ▼
Lavina School District 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.