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Community Water System · PWS MT0000578

Ramsay Water and Sewer District

Ramsay, Montana 59748 - drinking water served from groundwater sources to 97 people, tracked in EPA SDWIS and UCMR5.

97
People served
119
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 119 drinking-water violations at Ramsay Water and Sewer District - below the Montana per-system average.

119
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
97
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Ramsay Water and Sewer District

Ramsay Water and Sewer District is a local-owned community water system that delivers drinking water to 97 residents in Ramsay, Montana (Silver Bow County) through 35 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 119 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 109 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 Groundwater Rule, recorded in 11 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%).

Ramsay Water and Sewer District's 119 violations sit below 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
97
Total Violations
119
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
35
County
Silver Bow
School/Daycare
No
MCL Violations
0
Monitoring Violations
109
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Groundwater Rule MR 11 2022
Lead and Copper Rule MR 10 2023
Consumer Confidence Rule Other 10 2022
Coliform (TCR) MR 9 2012
Thallium, Total MR 7 2011
TTHM MR 6 2022
Nitrate-Nitrite MR 6 2024
Total Haloacetic Acids (HAA5) MR 6 2022
Barium MR 4 2011
Fluoride MR 4 2011
Nickel MR 4 2011
Antimony, Total MR 4 2011
Mercury MR 4 2011
Chromium MR 4 2011
Cadmium MR 4 2011
Selenium MR 4 2011
Beryllium, Total MR 4 2011
Aldicarb sulfoxide MR 3 2002
Carbofuran MR 3 2002
Aldicarb MR 3 2002
Revised Total Coliform Rule MON 3 2021
OXAMYL MR 3 2002
Aldicarb sulfone MR 3 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 Ramsay Water and Sewer 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 MT0000578 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 Nitrate-Nitrite MR 6 SDWIS / MT0000578 / 1038
2023 Lead and Copper Rule MR 10 SDWIS / MT0000578 / 5000
2022 Groundwater Rule MR 11 SDWIS / MT0000578 / 0700
2022 Consumer Confidence Rule Other 10 SDWIS / MT0000578 / 7000
2022 TTHM MR 6 SDWIS / MT0000578 / 2950
2022 Total Haloacetic Acids (HAA5) MR 6 SDWIS / MT0000578 / 2456
2021 Revised Total Coliform Rule MON 3 SDWIS / MT0000578 / 8000
2012 Coliform (TCR) MR 9 SDWIS / MT0000578 / 3100
2011 Thallium, Total MR 7 SDWIS / MT0000578 / 1085
2011 Barium MR 4 SDWIS / MT0000578 / 1010
2011 Fluoride MR 4 SDWIS / MT0000578 / 1025
2011 Nickel MR 4 SDWIS / MT0000578 / 1036
2011 Antimony, Total MR 4 SDWIS / MT0000578 / 1074
2011 Mercury MR 4 SDWIS / MT0000578 / 1035
2011 Chromium MR 4 SDWIS / MT0000578 / 1020

How Ramsay Water and Sewer District Compares

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

Metric Ramsay Water and Sewer District Montana avg Federal benchmark
Total violations 119 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 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 97 492 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 Ramsay Water and Sewer District water safe to drink? ▼
Ramsay Water and Sewer District (PWS ID: MT0000578) has 119 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 97 people using Groundwater sources.
How many people does Ramsay Water and Sewer District serve? ▼
Ramsay Water and Sewer District serves 97 people in Ramsay, Montana. It is a Local-owned system using Groundwater water sources with 35 service connections.
What type of violations does Ramsay Water and Sewer District have? ▼
Ramsay Water and Sewer District has 119 total violations: 0 health-based violations (MCL exceedances or treatment failures), 109 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Ramsay Water and Sewer District water? ▼
No PFAS testing data is available for Ramsay Water and Sewer District under the EPA's UCMR5 monitoring program.
What water source does Ramsay Water and Sewer District use? ▼
Ramsay Water and Sewer District 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.