Transient Non-Community Water System · PWS MT0001887
Columbus Rest Area Eastbound
Operator location Billings, Montana - 66% of 96 violations are health-based (upper-third health share (> 23%)); groundwater source; 800 served per SDWIS.
- 800
- People served (this PWS)
- 96
- EPA violations (this PWS)
- 63
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Columbus Rest Area Eastbound standing, high SDWIS violation third
66% of 96 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 66% is upper-third health share (> 23%). Population rank #22,554 of 29,740 among systems serving 500+.
The verdict
Columbus Rest Area Eastbound sits in the upper third of the sitemap cohort by violation count (96), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (800; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 66% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #22,554 of 29,740
- Population · /systems
- #167 of 283
- Population · MT
- 96
- Total EPA violations on record
- 66%
- Health-based (MCL / treatment failure)
Population ordinals match the sitemap cohort (systems serving 500+, population_served DESC). See methodology · corpus placement.
System Details
- System Type
- Transient Non-Community
- Owner Type
- State
- Connections
- 1
- County
- Stillwater
- School/Daycare
- No
- MCL Violations
- 63
- Monitoring Violations
- 33
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 63 | 2012 |
| Coliform (TCR) | MR | 19 | 2005 |
| Nitrate-Nitrite | MR | 8 | 2011 |
| E. COLI | MR | 6 | 2012 |
Violation Count vs. the National Corpus
Columbus Rest Area Eastbound has 96 recorded EPA violations, 72% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 27% carry more. 66% of this system's own violations are health-based (63 of 96), and it ranks #22,554 of 29,740 by population served among that same cohort.
EPA violations vs. the national water-system corpus
Public water systems serving 500+ people (EPA SDWIS)
96 Around the middle fewer violations than 27% 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 Columbus Rest Area Eastbound
63 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for MT0001887.
Sources: EPA SDWIS
Nationwide peers
96 violations · 800 served: nearest cross-state SDWIS matches.
Cross-state systems with comparable violation load
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems with smaller service footprints
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Columbus Rest Area Eastbound
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.