Community Water System · PWS CO0142400
Dolores Town Of
Operator location Dolores, Colorado - 7% of 44 violations are health-based (middle-third health share (≤ 23%)); surface water source; 1,626 served per SDWIS.
- 1,626
- People served (this PWS)
- 44
- EPA violations (this PWS)
- 3
- Health-based (this PWS)
- No PFAS
- UCMR5 (this PWS)
Dolores Town Of standing, mid SDWIS violation third
7% of 44 recorded violations are health-based - middle-third health share (≤ 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 7% is middle-third health share (≤ 23%). UCMR5: UCMR5 tested, none detected. Population rank #15,214 of 29,740 among systems serving 500+.
The verdict
Dolores Town Of lands in the middle third by violation volume (44), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is mid-pack at 1,626 (mid served population (≤ 3,309)). Health-based share is 7% (middle-third health share (≤ 23%)). UCMR5 tested this system and reported no PFAS above the minimum reporting level.
- #15,214 of 29,740
- Population · /systems
- #276 of 551
- Population · CO
- 44
- Total EPA violations on record
- 7%
- 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
- 540
- County
- Montezuma
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 26
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Di(2-ethylhexyl) phthalate | MR | 5 | 2007 |
| Consumer Confidence Rule | Other | 5 | 2016 |
| TTHM | MR | 3 | 2006 |
| Lead and Copper Rule | MR | 3 | 2020 |
| Interim Enhanced Surface Water Treatment Rule | MR | 3 | 2020 |
| Combined Uranium | MR | 3 | 2011 |
| Surface Water Treatment Rule | TT | 3 | 1993 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2006 |
| Surface Water Treatment Rule | MR | 3 | 2020 |
| Coliform (TCR) | MR | 3 | 2007 |
Violation Count vs. the National Corpus
Dolores Town Of has 44 recorded EPA violations, 53% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 46% carry more. 7% of this system's own violations are health-based (3 of 44), and it ranks #15,214 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)
44 Around the middle fewer violations than 46% 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
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 0 of 116 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHxS | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 7/18/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| HFPO-DA | 7/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| ADONA | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 9Cl-PF3ONS | 7/18/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 7/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFHxA | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDoA | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFDA | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOA | 7/18/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFBA | 7/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFNA | 7/18/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFEESA | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpA | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFOS | 7/18/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFPeS | 7/18/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| NMeFOSAA | 7/18/2023 | <6.00 ppt | 6.00 ppt | Not Detected |
| NEtFOSAA | 7/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFBS | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTrDA | 7/18/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFPeA | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 7/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| NFDHA | 7/18/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| PFMBA | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHpS | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMPA | 7/18/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| 8:2 FTS | 7/18/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 4:2 FTS | 7/18/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFTA | 7/18/2023 | <8.00 ppt | 8.00 ppt | Not Detected |
| NFDHA | 4/11/2023 | <20.00 ppt | 20.00 ppt | Not Detected |
| 4:2 FTS | 4/11/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFHxA | 4/11/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFUnA | 4/11/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| 11Cl-PF3OUdS | 4/11/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| 9Cl-PF3ONS | 4/11/2023 | <2.00 ppt | 2.00 ppt | Not Detected |
| ADONA | 4/11/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| HFPO-DA | 4/11/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFDoA | 4/11/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 6:2 FTS | 4/11/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFPeA | 4/11/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| 8:2 FTS | 4/11/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFMPA | 4/11/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFEESA | 4/11/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFPeS | 4/11/2023 | <4.00 ppt | 4.00 ppt | Not Detected |
| PFHpS | 4/11/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFMBA | 4/11/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| PFBA | 4/11/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
| PFTrDA | 4/11/2023 | <7.00 ppt | 7.00 ppt | Not Detected |
| PFDA | 4/11/2023 | <3.00 ppt | 3.00 ppt | Not Detected |
| NEtFOSAA | 4/11/2023 | <5.00 ppt | 5.00 ppt | Not Detected |
Health-based violations on Dolores Town Of
3 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for CO0142400.
Sources: EPA SDWIS · Colorado Department of Public Health and Environment, Water Quality Control
Nationwide peers
44 violations · 1,626 served: nearest cross-state SDWIS matches.
Cross-state systems near this violation count
Nearest cross-state community systems (500+ served) by total SDWIS violations on record.
Cross-state systems near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Dolores 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.