Community Water System · PWS CO0105900
Walsh Town Of
Operator location Walsh, Colorado - 56% of 140 violations are health-based (upper-third health share (> 23%)); groundwater source; 650 served per SDWIS.
- 650
- People served (this PWS)
- 140
- EPA violations (this PWS)
- 79
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Walsh Town Of standing, high SDWIS violation third
56% of 140 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 56% is upper-third health share (> 23%). Population rank #25,204 of 29,740 among systems serving 500+.
The verdict
Walsh Town Of sits in the upper third of the sitemap cohort by violation count (140), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (650; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 56% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #25,204 of 29,740
- Population · /systems
- #475 of 551
- Population · CO
- 140
- Total EPA violations on record
- 56%
- 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
- Community
- Owner Type
- Local
- Connections
- 355
- County
- Baca
- School/Daycare
- No
- MCL Violations
- 71
- Monitoring Violations
- 47
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Radium (-226 and -228) | MCL | 36 | 2025 |
| Nitrate | MCL | 31 | 2025 |
| Groundwater Rule | TT | 8 | 2018 |
| Lead and Copper Rule | MR | 7 | 2019 |
| Revised Total Coliform Rule | Other | 7 | 2023 |
| Coliform (TCR) | MR | 6 | 2008 |
| Fluoride | MR | 4 | 2007 |
| Public Notice | Other | 4 | 2025 |
| Coliform (TCR) | MCL | 4 | 2007 |
| Atrazine | MR | 4 | 2010 |
| Chlorine | MR | 3 | 2008 |
| Nitrate | MR | 3 | 1993 |
| Consumer Confidence Rule | Other | 2 | 2004 |
| Arsenic | MR | 2 | 2007 |
| Barium | MR | 2 | 2007 |
| Chromium | MR | 2 | 2007 |
| Mercury | MR | 2 | 2007 |
| Thallium, Total | MR | 2 | 2007 |
| Beryllium, Total | MR | 2 | 2007 |
| Antimony, Total | MR | 2 | 2007 |
| Cadmium | MR | 2 | 2007 |
| Selenium | MR | 2 | 2007 |
| Nickel | MR | 2 | 2007 |
Violation Count vs. the National Corpus
Walsh Town Of has 140 recorded EPA violations, 80% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 20% carry more. 56% of this system's own violations are health-based (79 of 140), and it ranks #25,204 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)
140 Higher than most more violations than 80% 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 Walsh Town Of
79 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for CO0105900.
Sources: EPA SDWIS · Colorado Department of Public Health and Environment, Water Quality Control
Nationwide peers
140 violations · 650 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 Walsh Town Of
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.