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Non-Transient Non-Community Water System · PWS MT0001054

Florence Carlton School

Florence, Montana 59833 - drinking water served from groundwater sources to 1,025 people, tracked in EPA SDWIS and UCMR5.

1,025
People served
70
EPA violations
12
Health-based
Untested
UCMR5 result

The verdict

EPA records 70 drinking-water violations at Florence Carlton School, 17% of them health-based - below the Montana per-system average.

70
Total EPA violations on record
17%
Health-based (MCL / treatment failure)
1,025
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Florence Carlton School

Florence Carlton School is a state-owned non-transient non-community water system that delivers drinking water to 1,025 residents in Florence, Montana (Ravalli County) through 3 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 70 total violations for this system , of which 12 (17%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 56 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 Lead and Copper Rule, recorded in 27 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%).

Florence Carlton School's 70 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
1,025
Total Violations
70
Health-Based Violations
12
Water Source
Groundwater

System Details

System Type
Non-Transient Non-Community
Owner Type
State
Connections
3
County
Ravalli
School/Daycare
Yes
MCL Violations
12
Monitoring Violations
56
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 27 2005
Coliform (TCR) MR 22 2010
Coliform (TCR) MCL 12 2000
Revised Total Coliform Rule MON 3 2016
Nitrate-Nitrite MR 3 2006
Nitrate MR 1 1981

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 Florence Carlton School.

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 MT0001054 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 3 SDWIS / MT0001054 / 8000
2010 Coliform (TCR) MR 22 SDWIS / MT0001054 / 3100
2006 Nitrate-Nitrite MR 3 SDWIS / MT0001054 / 1038
2005 Lead and Copper Rule MR 27 SDWIS / MT0001054 / 5000
2000 Coliform (TCR) MCL 12 SDWIS / MT0001054 / 3100
1981 Nitrate MR 1 SDWIS / MT0001054 / 1040

How Florence Carlton School Compares

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

Metric Florence Carlton School Montana avg Federal benchmark
Total violations 70 131.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 12 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 1,025 492 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 Florence Carlton School water safe to drink? ▼
Florence Carlton School (PWS ID: MT0001054) has 70 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 1,025 people using Groundwater sources.
How many people does Florence Carlton School serve? ▼
Florence Carlton School serves 1,025 people in Florence, Montana. It is a State-owned system using Groundwater water sources with 3 service connections.
What type of violations does Florence Carlton School have? ▼
Florence Carlton School has 70 total violations: 12 health-based violations (MCL exceedances or treatment failures), 56 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Florence Carlton School water? ▼
No PFAS testing data is available for Florence Carlton School under the EPA's UCMR5 monitoring program.
What water source does Florence Carlton School use? ▼
Florence Carlton School 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.