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Community Water System · PWS MT0004697

Broadwater Estates HOA

East Helena, Montana 59635 - drinking water served from groundwater sources to 40 people, tracked in EPA SDWIS and UCMR5.

40
People served
158
EPA violations
51
Health-based
Untested
UCMR5 result

The verdict

EPA records 158 drinking-water violations at Broadwater Estates HOA, 32% of them health-based - above the Montana per-system average.

158
Total EPA violations on record
32%
Health-based (MCL / treatment failure)
40
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Broadwater Estates HOA

Broadwater Estates HOA is a private-owned community water system that delivers drinking water to 40 residents in East Helena, Montana (Lewis and Clark County) through 52 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 158 total violations for this system , of which 51 (32%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 105 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 Arsenic, recorded in 51 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, 5 of 45 UCMR5-tested systems have reported PFAS detections (11.1%).

Broadwater Estates HOA's 158 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
40
Total Violations
158
Health-Based Violations
51
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
52
County
Lewis and Clark
School/Daycare
No
MCL Violations
51
Monitoring Violations
105
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Arsenic MCL 51 2021
Groundwater Rule MR 12 2018
TTHM MR 4 2021
Total Haloacetic Acids (HAA5) MR 4 2021
Nitrate-Nitrite MR 4 2018
Arsenic MR 3 2013
BHC-GAMMA MR 3 2011
Methoxychlor MR 3 2011
Toxaphene MR 3 2011
Dalapon MR 3 2011
Di(2-ethylhexyl) adipate MR 3 2011
Di(2-ethylhexyl) phthalate MR 3 2011
Picloram MR 3 2011
Dinoseb MR 3 2011
Hexachlorocyclopentadiene MR 3 2011
Aldicarb sulfone MR 3 2011
Atrazine MR 3 2011
Heptachlor epoxide MR 3 2011
2,4,5-TP MR 3 2011
Pentachlorophenol MR 3 2011
Chlordane MR 3 2011
Simazine MR 3 2011
OXAMYL MR 3 2011
Carbofuran MR 3 2011
Endrin MR 3 2011
Benzo(a)pyrene MR 3 2011
HEXACHLOROBENZENE MR 3 2011
2,4-D MR 3 2011
Heptachlor MR 3 2011
Aldicarb sulfoxide MR 3 2011

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 Broadwater Estates HOA.

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 MT0004697 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 Consumer Confidence Rule Other 2 SDWIS / MT0004697 / 7000
2021 Arsenic MCL 51 SDWIS / MT0004697 / 1005
2021 TTHM MR 4 SDWIS / MT0004697 / 2950
2021 Total Haloacetic Acids (HAA5) MR 4 SDWIS / MT0004697 / 2456
2018 Groundwater Rule MR 12 SDWIS / MT0004697 / 0700
2018 Nitrate-Nitrite MR 4 SDWIS / MT0004697 / 1038
2013 Arsenic MR 3 SDWIS / MT0004697 / 1005
2011 BHC-GAMMA MR 3 SDWIS / MT0004697 / 2010
2011 Methoxychlor MR 3 SDWIS / MT0004697 / 2015
2011 Toxaphene MR 3 SDWIS / MT0004697 / 2020
2011 Dalapon MR 3 SDWIS / MT0004697 / 2031
2011 Di(2-ethylhexyl) adipate MR 3 SDWIS / MT0004697 / 2035
2011 Di(2-ethylhexyl) phthalate MR 3 SDWIS / MT0004697 / 2039
2011 Picloram MR 3 SDWIS / MT0004697 / 2040
2011 Dinoseb MR 3 SDWIS / MT0004697 / 2041

How Broadwater Estates HOA Compares

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

Metric Broadwater Estates HOA Montana avg Federal benchmark
Total violations 158 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 51 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 40 492 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 Broadwater Estates HOA water safe to drink? ▼
Broadwater Estates HOA (PWS ID: MT0004697) has 158 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 40 people using Groundwater sources.
How many people does Broadwater Estates HOA serve? ▼
Broadwater Estates HOA serves 40 people in East Helena, Montana. It is a Private-owned system using Groundwater water sources with 52 service connections.
What type of violations does Broadwater Estates HOA have? ▼
Broadwater Estates HOA has 158 total violations: 51 health-based violations (MCL exceedances or treatment failures), 105 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Broadwater Estates HOA water? ▼
No PFAS testing data is available for Broadwater Estates HOA under the EPA's UCMR5 monitoring program.
What water source does Broadwater Estates HOA use? ▼
Broadwater Estates HOA 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.