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Community Water System · PWS MT0001921

Mountain View Mb Hm Pk

Melville, Montana 59055 - drinking water served from groundwater sources to 150 people, tracked in EPA SDWIS and UCMR5.

150
People served
465
EPA violations
11
Health-based
Untested
UCMR5 result

The verdict

EPA records 465 drinking-water violations at Mountain View Mb Hm Pk, 2% of them health-based - above the Montana per-system average.

465
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
150
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Mountain View Mb Hm Pk

Mountain View Mb Hm Pk is a private-owned community water system that delivers drinking water to 150 residents in Melville, Montana (Broadwater County) through 83 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 465 total violations for this system , of which 11 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 427 monitoring and reporting violations are on file. The most recent violation on record dates to 2020.

The most frequently cited contaminant at this system is Consumer Confidence Rule, recorded in 24 violations (Other). 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%).

Mountain View Mb Hm Pk's 465 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
150
Total Violations
465
Health-Based Violations
11
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
83
County
Broadwater
School/Daycare
No
MCL Violations
11
Monitoring Violations
427
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 24 2020
Coliform (TCR) MR 16 2011
Endrin MR 13 2014
Methoxychlor MR 13 2014
Dalapon MR 13 2014
OXAMYL MR 13 2014
Simazine MR 13 2014
Di(2-ethylhexyl) phthalate MR 13 2014
Hexachlorocyclopentadiene MR 13 2014
Atrazine MR 13 2014
Heptachlor MR 13 2014
Heptachlor epoxide MR 13 2014
2,4-D MR 13 2014
2,4,5-TP MR 13 2014
HEXACHLOROBENZENE MR 13 2014
Toxaphene MR 13 2014
Di(2-ethylhexyl) adipate MR 13 2014
Picloram MR 13 2014
LASSO MR 13 2014
BHC-GAMMA MR 13 2014
Pentachlorophenol MR 13 2014
Chlordane MR 13 2014
Benzo(a)pyrene MR 13 2014
Carbofuran MR 13 2014
Dinoseb MR 13 2014
Coliform (TCR) MCL 11 2013
Aldicarb sulfoxide MR 10 2005
Aldicarb MR 10 2005
Aldicarb sulfone MR 10 2005
Lead and Copper Rule MR 6 2020

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 Mountain View Mb Hm Pk.

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 MT0001921 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
2020 Consumer Confidence Rule Other 24 SDWIS / MT0001921 / 7000
2020 Lead and Copper Rule MR 6 SDWIS / MT0001921 / 5000
2019 Nitrate-Nitrite MR 6 SDWIS / MT0001921 / 1038
2017 Revised Total Coliform Rule MON 3 SDWIS / MT0001921 / 8000
2014 Endrin MR 13 SDWIS / MT0001921 / 2005
2014 Methoxychlor MR 13 SDWIS / MT0001921 / 2015
2014 Dalapon MR 13 SDWIS / MT0001921 / 2031
2014 OXAMYL MR 13 SDWIS / MT0001921 / 2036
2014 Simazine MR 13 SDWIS / MT0001921 / 2037
2014 Di(2-ethylhexyl) phthalate MR 13 SDWIS / MT0001921 / 2039
2014 Hexachlorocyclopentadiene MR 13 SDWIS / MT0001921 / 2042
2014 Atrazine MR 13 SDWIS / MT0001921 / 2050
2014 Heptachlor MR 13 SDWIS / MT0001921 / 2065
2014 Heptachlor epoxide MR 13 SDWIS / MT0001921 / 2067
2014 2,4-D MR 13 SDWIS / MT0001921 / 2105

How Mountain View Mb Hm Pk Compares

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

Metric Mountain View Mb Hm Pk Montana avg Federal benchmark
Total violations 465 131.4 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 62.2% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 150 492 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 Mountain View Mb Hm Pk water safe to drink? ▼
Mountain View Mb Hm Pk (PWS ID: MT0001921) has 465 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 150 people using Groundwater sources.
How many people does Mountain View Mb Hm Pk serve? ▼
Mountain View Mb Hm Pk serves 150 people in Melville, Montana. It is a Private-owned system using Groundwater water sources with 83 service connections.
What type of violations does Mountain View Mb Hm Pk have? ▼
Mountain View Mb Hm Pk has 465 total violations: 11 health-based violations (MCL exceedances or treatment failures), 427 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Mountain View Mb Hm Pk water? ▼
No PFAS testing data is available for Mountain View Mb Hm Pk under the EPA's UCMR5 monitoring program.
What water source does Mountain View Mb Hm Pk use? ▼
Mountain View Mb Hm Pk 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.