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Community Water System · PWS MT0001984

Happy Valley Water Dist B Kspl

Columbia Falls, Montana 59912 - drinking water served from groundwater sources to 207 people, tracked in EPA SDWIS and UCMR5.

207
People served
253
EPA violations
58
Health-based
Untested
UCMR5 result

The verdict

EPA records 253 drinking-water violations at Happy Valley Water Dist B Kspl, 23% of them health-based - above the Montana per-system average.

253
Total EPA violations on record
23%
Health-based (MCL / treatment failure)
207
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Happy Valley Water Dist B Kspl

Happy Valley Water Dist B Kspl is a local-owned community water system that delivers drinking water to 207 residents in Columbia Falls, Montana (Flathead County) through 83 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 253 total violations for this system , of which 58 (23%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 151 monitoring and reporting violations are on file. The most recent violation on record dates to 2015.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 58 violations (MCL, health-based). 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%).

Happy Valley Water Dist B Kspl's 253 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
207
Total Violations
253
Health-Based Violations
58
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
83
County
Flathead
School/Daycare
No
MCL Violations
58
Monitoring Violations
151
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 58 2015
Coliform (TCR) MR 12 2012
Consumer Confidence Rule Other 12 2006
Nitrate MR 12 1998
Lead and Copper Rule MR 11 1999
Nitrate-Nitrite MR 3 2002
Di(2-ethylhexyl) adipate MR 2 1996
Dinoseb MR 2 1996
Dalapon MR 2 1996
Pentachlorophenol MR 2 1996
Total Polychlorinated Biphenyls (PCB) MR 2 1996
Heptachlor epoxide MR 2 1996
Carbofuran MR 2 1996
Atrazine MR 2 1996
Aldicarb MR 2 1996
LASSO MR 2 1996
2,4,5-TP MR 2 1996
BHC-GAMMA MR 2 1996
Methoxychlor MR 2 1996
Endrin MR 2 1996
p-Dichlorobenzene MR 2 1996
Vinyl chloride MR 2 1996
Carbon tetrachloride MR 2 1996
DICHLOROMETHANE MR 2 1996
CHLOROBENZENE MR 2 1996
Toluene MR 2 1996
Ethylbenzene MR 2 1996
cis-1,2-Dichloroethylene MR 2 1996
Trichloroethylene MR 2 1996
Benzene MR 2 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 Happy Valley Water Dist B Kspl.

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 MT0001984 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
2015 Coliform (TCR) MCL 58 SDWIS / MT0001984 / 3100
2012 Coliform (TCR) MR 12 SDWIS / MT0001984 / 3100
2006 Consumer Confidence Rule Other 12 SDWIS / MT0001984 / 7000
2002 Nitrate-Nitrite MR 3 SDWIS / MT0001984 / 1038
1999 Lead and Copper Rule MR 11 SDWIS / MT0001984 / 5000
1998 Nitrate MR 12 SDWIS / MT0001984 / 1040
1996 Di(2-ethylhexyl) adipate MR 2 SDWIS / MT0001984 / 2035
1996 Dinoseb MR 2 SDWIS / MT0001984 / 2041
1996 Dalapon MR 2 SDWIS / MT0001984 / 2031
1996 Pentachlorophenol MR 2 SDWIS / MT0001984 / 2326
1996 Total Polychlorinated Biphenyls (PCB) MR 2 SDWIS / MT0001984 / 2383
1996 Heptachlor epoxide MR 2 SDWIS / MT0001984 / 2067
1996 Carbofuran MR 2 SDWIS / MT0001984 / 2046
1996 Atrazine MR 2 SDWIS / MT0001984 / 2050
1996 Aldicarb MR 2 SDWIS / MT0001984 / 2047

How Happy Valley Water Dist B Kspl Compares

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

Metric Happy Valley Water Dist B Kspl Montana avg Federal benchmark
Total violations 253 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 58 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 207 492 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 Happy Valley Water Dist B Kspl water safe to drink? ▼
Happy Valley Water Dist B Kspl (PWS ID: MT0001984) has 253 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 207 people using Groundwater sources.
How many people does Happy Valley Water Dist B Kspl serve? ▼
Happy Valley Water Dist B Kspl serves 207 people in Columbia Falls, Montana. It is a Local-owned system using Groundwater water sources with 83 service connections.
What type of violations does Happy Valley Water Dist B Kspl have? ▼
Happy Valley Water Dist B Kspl has 253 total violations: 58 health-based violations (MCL exceedances or treatment failures), 151 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Happy Valley Water Dist B Kspl water? ▼
No PFAS testing data is available for Happy Valley Water Dist B Kspl under the EPA's UCMR5 monitoring program.
What water source does Happy Valley Water Dist B Kspl use? ▼
Happy Valley Water Dist B Kspl uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
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.