Community Water System · PWS CO0122950
Williamsburg Town Of
Operator location Williamsburg, Colorado - 0% of 103 violations are health-based (lower-third health share (≤ 1%)); surface water source; 775 served per SDWIS.
- 775
- People served (this PWS)
- 103
- EPA violations (this PWS)
- 0
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Williamsburg Town Of standing, high SDWIS violation third
0% of 103 recorded violations are health-based - lower-third health share (≤ 1%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 0% is lower-third health share (≤ 1%). Population rank #23,005 of 29,740 among systems serving 500+.
The verdict
Williamsburg Town Of sits in the upper third of the sitemap cohort by violation count (103), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (775; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is only 0% - almost all of this trail is monitoring or reporting. No UCMR5 PFAS test appears for this system in this extract.
- #23,005 of 29,740
- Population · /systems
- #432 of 551
- Population · CO
- 103
- Total EPA violations on record
- 0%
- 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
- 289
- County
- Fremont
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 66
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Consumer Confidence Rule | Other | 26 | 2022 |
| Lead and Copper Rule | MR | 24 | 2021 |
| Total Haloacetic Acids (HAA5) | MR | 22 | 2023 |
| TTHM | MR | 18 | 2018 |
| Revised Total Coliform Rule | Other | 3 | 2023 |
| Public Notice | Other | 2 | 2023 |
| Coliform (TCR) | MR | 2 | 2006 |
Violation Count vs. the National Corpus
Williamsburg Town Of has 103 recorded EPA violations, 74% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 26% carry more. 0% of this system's own violations are health-based (0 of 103), and it ranks #23,005 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)
103 Around the middle fewer violations than 26% 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 Williamsburg Town Of
0 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for CO0122950.
Sources: EPA SDWIS · Colorado Department of Public Health and Environment, Water Quality Control
Nationwide peers
103 violations · 775 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 Williamsburg 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.