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Non-Transient Non-Community Water System · PWS MT0000846

Bonner School District No 14

Bonner, Montana 59823 - drinking water served from groundwater sources to 420 people, tracked in EPA SDWIS and UCMR5.

420
People served
272
EPA violations
5
Health-based
Untested
UCMR5 result

The verdict

EPA records 272 drinking-water violations at Bonner School District No 14, 2% of them health-based - above the Montana per-system average.

272
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
420
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Bonner School District No 14

Bonner School District No 14 is a local-owned non-transient non-community water system that delivers drinking water to 420 residents in Bonner, Montana (Missoula County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 272 total violations for this system , of which 5 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 267 monitoring and reporting violations are on file. The most recent violation on record dates to 2016.

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, 28 of 45 UCMR5-tested systems have reported PFAS detections (62.2%).

Bonner School District No 14's 272 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
420
Total Violations
272
Health-Based Violations
5
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
Local
Connections
1
County
Missoula
School/Daycare
Yes
MCL Violations
5
Monitoring Violations
267
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 34 2012
Nitrate-Nitrite MR 19 2011
Lead and Copper Rule MR 12 2011
Coliform (TCR) MCL 5 2014
Nitrate MR 4 1999
Endrin MR 4 2002
BHC-GAMMA MR 4 2002
Dalapon MR 4 2002
Di(2-ethylhexyl) adipate MR 4 2002
OXAMYL MR 4 2002
Di(2-ethylhexyl) phthalate MR 4 2002
Picloram MR 4 2002
Dinoseb MR 4 2002
Aldicarb sulfoxide MR 4 2002
Aldicarb MR 4 2002
Heptachlor MR 4 2002
Heptachlor epoxide MR 4 2002
2,4,5-TP MR 4 2002
HEXACHLOROBENZENE MR 4 2002
Benzo(a)pyrene MR 4 2002
Chlordane MR 4 2002
cis-1,2-Dichloroethylene MR 4 2002
Xylenes, Total MR 4 2002
DICHLOROMETHANE MR 4 2002
o-Dichlorobenzene MR 4 2002
p-Dichlorobenzene MR 4 2002
Vinyl chloride MR 4 2002
1,2-Dichloroethane MR 4 2002
1,1,1-Trichloroethane MR 4 2002
Carbon tetrachloride MR 4 2002

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 Bonner School District No 14.

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 MT0000846 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
2016 Revised Total Coliform Rule MON 4 SDWIS / MT0000846 / 8000
2014 Coliform (TCR) MCL 5 SDWIS / MT0000846 / 3100
2014 E. COLI MR 3 SDWIS / MT0000846 / 3014
2012 Coliform (TCR) MR 34 SDWIS / MT0000846 / 3100
2011 Nitrate-Nitrite MR 19 SDWIS / MT0000846 / 1038
2011 Lead and Copper Rule MR 12 SDWIS / MT0000846 / 5000
2005 Arsenic MR 3 SDWIS / MT0000846 / 1005
2002 Endrin MR 4 SDWIS / MT0000846 / 2005
2002 BHC-GAMMA MR 4 SDWIS / MT0000846 / 2010
2002 Dalapon MR 4 SDWIS / MT0000846 / 2031
2002 Di(2-ethylhexyl) adipate MR 4 SDWIS / MT0000846 / 2035
2002 OXAMYL MR 4 SDWIS / MT0000846 / 2036
2002 Di(2-ethylhexyl) phthalate MR 4 SDWIS / MT0000846 / 2039
2002 Picloram MR 4 SDWIS / MT0000846 / 2040
2002 Dinoseb MR 4 SDWIS / MT0000846 / 2041

How Bonner School District No 14 Compares

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

Metric Bonner School District No 14 Montana avg Federal benchmark
Total violations 272 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 5 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 420 492 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 Bonner School District No 14 water safe to drink? ▼
Bonner School District No 14 (PWS ID: MT0000846) has 272 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 420 people using Groundwater sources.
How many people does Bonner School District No 14 serve? ▼
Bonner School District No 14 serves 420 people in Bonner, Montana. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Bonner School District No 14 have? ▼
Bonner School District No 14 has 272 total violations: 5 health-based violations (MCL exceedances or treatment failures), 267 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Bonner School District No 14 water? ▼
No PFAS testing data is available for Bonner School District No 14 under the EPA's UCMR5 monitoring program.
What water source does Bonner School District No 14 use? ▼
Bonner School District No 14 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.