Community Water System · PWS MT0000460
Belfry Carbon Co Water and Sewer Dist
Operator location Belfry, Montana - 25% of 20 violations are health-based (upper-third health share (> 23%)); groundwater source; 205 served per SDWIS.
- 205
- People served (this PWS)
- 20
- EPA violations (this PWS)
- 5
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Belfry Carbon Co Water and Sewer Dist standing, low SDWIS violation third
25% of 20 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 25% is upper-third health share (> 23%).
The verdict
Belfry Carbon Co Water and Sewer Dist is in the lower third by violation count (20; lower-third violation load (≤ 21 violations)). A low count does not mean the system is unmonitored - monitoring and reporting violations still appear in SDWIS. Population served is smaller (205; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 25% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 20
- Total EPA violations on record
- 25%
- Health-based (MCL / treatment failure)
- 205
- People served by this PWS (SDWIS)
- N/A
- PFAS compounds detected (UCMR5)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 136
- County
- Carbon
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 11
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 5 | 2018 |
| Coliform (TCR) | MCL | 5 | 2016 |
| Coliform (TCR) | MR | 4 | 1995 |
| Consumer Confidence Rule | Other | 4 | 2017 |
| Arsenic | MR | 2 | 2008 |
Violation Count vs. the National Corpus
Belfry Carbon Co Water and Sewer Dist has 20 recorded EPA violations, 31% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 67% carry more. 25% of this system's own violations are health-based (5 of 20), and it ranks unranked by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
20 Lower than most fewer violations than 67% of 29,740 water systems
the national water-system corpus, bucketed by value
Each bar is a band; taller bars hold more water systems. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source EPA SDWIS · 2026-05-15
Health-based violations on Belfry Carbon Co Water and Sewer Dist
5 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for MT0000460.
Sources: EPA SDWIS
Nationwide peers
20 violations · 205 served: nearest cross-state SDWIS matches.
Cross-state systems with similarly light violation ledgers
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
What to do with Belfry Carbon Co Water and Sewer Dist
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Montana compares on the same EPA violation measures. Montana systems
- Check whether PFAS was detected at this system under UCMR5 testing. PFAS guide
- Find and compare another public water system by name or PWSID. Search systems
EPA SDWIS and UCMR5 figures are informational only, not a substitute for a certified lab test of your own tap water.