Community Water System · PWS NM3503821
Chama West Water Users Association
Operator location Chama, New Mexico - smaller served population (≤ 999) at 90 people served; 54 SDWIS violations on record from groundwater sources.
- 90
- People served (this PWS)
- 54
- EPA violations (this PWS)
- 12
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Chama West Water Users Association standing, mid SDWIS violation third
90 people served (SDWIS) - smaller served population (≤ 999). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 22% is middle-third health share (≤ 23%).
The verdict
Chama West Water Users Association lands in the middle third by violation volume (54), large enough for peer comparisons without matching the fleet's heaviest ledgers. Population served is smaller (90; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 22% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- 54
- Total EPA violations on record
- 22%
- Health-based (MCL / treatment failure)
- 90
- 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
- Local
- Connections
- 34
- County
- Rio Arriba
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 35
- Treatment Tech Violations
- 12
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 12 | 2017 |
| Groundwater Rule | TT | 12 | 2021 |
| TTHM | MR | 12 | 2017 |
| Lead and Copper Rule | MR | 8 | 2022 |
| Consumer Confidence Rule | Other | 4 | 2015 |
| Public Notice | Other | 3 | 2023 |
| Coliform (TCR) | MR | 3 | 2015 |
Violation Count vs. the National Corpus
Chama West Water Users Association has 54 recorded EPA violations, 59% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 41% carry more. 22% of this system's own violations are health-based (12 of 54), 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)
54 Around the middle fewer violations than 41% 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 Chama West Water Users Association
EPA SDWIS lists 90 people served and 34 connections for this PWS, confirm the service-area footprint on the federal report before comparing to municipal census totals.
Sources: EPA SDWIS
Nationwide peers
54 violations · 90 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.
What to do with Chama West Water Users Association
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in New Mexico compares on the same EPA violation measures. New Mexico 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.