Community Water System · PWS CO0235185
Annunciation Heights
Operator location Estes Park, Colorado - 72% of 127 violations are health-based (upper-third health share (> 23%)); groundwater source; 260 served per SDWIS.
- 260
- People served (this PWS)
- 127
- EPA violations (this PWS)
- 92
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Annunciation Heights standing, high SDWIS violation third
72% of 127 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 72% is upper-third health share (> 23%).
The verdict
Annunciation Heights sits in the upper third of the sitemap cohort by violation count (127), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (260; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 72% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 127
- Total EPA violations on record
- 72%
- Health-based (MCL / treatment failure)
- 260
- 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
- Community
- Owner Type
- Private
- Connections
- 20
- County
- Larimer
- School/Daycare
- No
- MCL Violations
- 87
- Monitoring Violations
- 22
- Treatment Tech Violations
- 5
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Gross Alpha, Excl. Radon and U | MCL | 28 | 2016 |
| Combined Radium (-226 and -228) | MCL | 23 | 2015 |
| Combined Uranium | MCL | 20 | 2015 |
| Lead and Copper Rule | MR | 18 | 2021 |
| TTHM | MCL | 16 | 2024 |
| Public Notice | Other | 12 | 2020 |
| Lead and Copper Rule | TT | 5 | 2018 |
| Coliform (TCR) | MR | 4 | 1996 |
Violation Count vs. the National Corpus
Annunciation Heights has 127 recorded EPA violations, 78% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 22% carry more. 72% of this system's own violations are health-based (92 of 127), 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)
127 Higher than most more violations than 78% 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 Annunciation Heights
92 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for CO0235185.
Sources: EPA SDWIS · Colorado Department of Public Health and Environment, Water Quality Control
Nationwide peers
127 violations · 260 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 Annunciation Heights
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.