Non-Transient Non-Community Water System · PWS CO0254200
Twenty Mile Coal Co
Operator location Oak Creek, Colorado - smaller served population (≤ 999) at 475 people served; 196 SDWIS violations on record from surface water sources.
- 475
- People served (this PWS)
- 196
- EPA violations (this PWS)
- 9
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Twenty Mile Coal Co standing, high SDWIS violation third
475 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 5% is middle-third health share (≤ 23%).
The verdict
Twenty Mile Coal Co sits in the upper third of the sitemap cohort by violation count (196), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (475; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 5% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 196
- Total EPA violations on record
- 5%
- Health-based (MCL / treatment failure)
- 475
- 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
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 5
- County
- Routt
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 187
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 16 | 2016 |
| Chlorine | MR | 14 | 2016 |
| Lead and Copper Rule | MR | 10 | 2025 |
| Coliform (TCR) | MCL | 9 | 2012 |
| Nitrate | MR | 6 | 2022 |
| ETHYLENE DIBROMIDE | MR | 6 | 2022 |
| TTHM | MR | 5 | 2017 |
| Total Haloacetic Acids (HAA5) | MR | 5 | 2017 |
| E. COLI | MR | 3 | 2015 |
| 1,2,4-Trichlorobenzene | MR | 2 | 2020 |
| cis-1,2-Dichloroethylene | MR | 2 | 2020 |
| DICHLOROMETHANE | MR | 2 | 2020 |
| p-Dichlorobenzene | MR | 2 | 2020 |
| Vinyl chloride | MR | 2 | 2020 |
| 1,1-Dichloroethylene | MR | 2 | 2020 |
| trans-1,2-Dichloroethylene | MR | 2 | 2020 |
| 1,1,1-Trichloroethane | MR | 2 | 2020 |
| Carbon tetrachloride | MR | 2 | 2020 |
| Trichloroethylene | MR | 2 | 2020 |
| 1,1,2-Trichloroethane | MR | 2 | 2020 |
| Tetrachloroethylene | MR | 2 | 2020 |
| CHLOROBENZENE | MR | 2 | 2020 |
| Fluoride | MR | 2 | 2020 |
| Cadmium | MR | 2 | 2020 |
| Chromium | MR | 2 | 2020 |
| Mercury | MR | 2 | 2020 |
| Antimony, Total | MR | 2 | 2020 |
| Thallium, Total | MR | 2 | 2020 |
| Selenium | MR | 2 | 2020 |
| Chlordane | MR | 2 | 2020 |
Violation Count vs. the National Corpus
Twenty Mile Coal Co has 196 recorded EPA violations, 85% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 15% carry more. 5% of this system's own violations are health-based (9 of 196), 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)
196 Higher than most more violations than 85% 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
Population served record for Twenty Mile Coal Co
EPA SDWIS lists 475 people served and 5 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS · Colorado Department of Public Health and Environment, Water Quality Control
Nationwide peers
196 violations · 475 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.
What to do with Twenty Mile Coal Co
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Colorado compares on the same EPA violation measures. Colorado 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.