Community Water System · PWS NM3531524
Blanco Mdwca
Operator location Blanco, New Mexico - upper-third violation load (> 74 violations) with 382 EPA violations; surface water source; 1,148 served (PWS-level, not municipal population).
- 1,148
- People served (this PWS)
- 382
- EPA violations (this PWS)
- 41
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Blanco Mdwca standing, high SDWIS violation third
382 EPA SDWIS violations on record - upper-third violation load (> 74 violations). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 11% is middle-third health share (≤ 23%). Population rank #18,272 of 29,740 among systems serving 500+.
The verdict
Blanco Mdwca sits in the upper third of the sitemap cohort by violation count (382), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,148 (mid served population (≤ 3,309)). Health-based share is 11% (middle-third health share (≤ 23%)). No UCMR5 PFAS test appears for this system in this extract.
- #18,272 of 29,740
- Population · /systems
- #144 of 215
- Population · NM
- 382
- Total EPA violations on record
- 11%
- 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
- 393
- County
- San Juan
- School/Daycare
- No
- MCL Violations
- 33
- Monitoring Violations
- 278
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MR | 103 | 2022 |
| TTHM | MR | 95 | 2024 |
| Coliform (TCR) | MR | 37 | 2005 |
| Consumer Confidence Rule | Other | 26 | 2020 |
| Lead and Copper Rule | MR | 18 | 2021 |
| Coliform (TCR) | MCL | 17 | 2006 |
| TTHM | MCL | 16 | 2024 |
| Chlorine | MR | 12 | 2009 |
| Public Notice | Other | 11 | 2023 |
| Groundwater Rule | TT | 8 | 2014 |
| Stage 2 Disinfectants and Disinfection Byproducts Rule | MR | 5 | 2010 |
| Revised Total Coliform Rule | Other | 4 | 2016 |
| Revised Total Coliform Rule | MON | 4 | 2016 |
| Surface Water Treatment Rule | MR | 4 | 2006 |
Violation Count vs. the National Corpus
Blanco Mdwca has 382 recorded EPA violations, 93% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 7% carry more. 11% of this system's own violations are health-based (41 of 382), and it ranks #18,272 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)
382 Higher than most more violations than 93% 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
SDWIS compliance record for Blanco Mdwca
382 violations on record for NM3531524; use EPA SDWIS to confirm return-to-compliance dates and monitoring categories.
Sources: EPA SDWIS
Nationwide peers
382 violations · 1,148 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 near this population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ sitemap gate).
What to do with Blanco Mdwca
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.