Community Water System · PWS NM3571119
Twin Forks Mdwca
Operator location Mayhill, New Mexico - 28% of 335 violations are health-based (upper-third health share (> 23%)); groundwater source; 1,274 served per SDWIS.
- 1,274
- People served (this PWS)
- 335
- EPA violations (this PWS)
- 95
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Twin Forks Mdwca standing, high SDWIS violation third
28% of 335 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 28% is upper-third health share (> 23%). Population rank #17,340 of 29,740 among systems serving 500+.
The verdict
Twin Forks Mdwca sits in the upper third of the sitemap cohort by violation count (335), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,274 (mid served population (≤ 3,309)). Health-based share is 28% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #17,340 of 29,740
- Population · /systems
- #135 of 215
- Population · NM
- 335
- Total EPA violations on record
- 28%
- 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
- 479
- County
- Otero
- School/Daycare
- No
- MCL Violations
- 60
- Monitoring Violations
- 206
- Treatment Tech Violations
- 35
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 60 | 2005 |
| Lead and Copper Rule | MR | 31 | 2010 |
| Interim Enhanced Surface Water Treatment Rule | TT | 24 | 2010 |
| Surface Water Treatment Rule | MR | 21 | 2008 |
| Consumer Confidence Rule | Other | 19 | 2025 |
| TTHM | MR | 16 | 2019 |
| Total Haloacetic Acids (HAA5) | MR | 16 | 2019 |
| Interim Enhanced Surface Water Treatment Rule | MR | 10 | 2010 |
| Surface Water Treatment Rule | TT | 9 | 2008 |
| Public Notice | Other | 7 | 2022 |
| Coliform (TCR) | MR | 4 | 2002 |
| Revised Total Coliform Rule | MON | 4 | 2020 |
| Chlorine | MR | 3 | 2020 |
| Endrin | MR | 2 | 2014 |
| Toxaphene | MR | 2 | 2014 |
| Endothall | MR | 2 | 2014 |
| Glyphosate | MR | 2 | 2014 |
| Di(2-ethylhexyl) adipate | MR | 2 | 2014 |
| OXAMYL | MR | 2 | 2014 |
| Simazine | MR | 2 | 2014 |
| Di(2-ethylhexyl) phthalate | MR | 2 | 2014 |
| Dinoseb | MR | 2 | 2014 |
| Hexachlorocyclopentadiene | MR | 2 | 2014 |
| Carbofuran | MR | 2 | 2014 |
| Atrazine | MR | 2 | 2014 |
| LASSO | MR | 2 | 2014 |
| Heptachlor epoxide | MR | 2 | 2014 |
| 2,4-D | MR | 2 | 2014 |
| 2,4,5-TP | MR | 2 | 2014 |
| Benzo(a)pyrene | MR | 2 | 2014 |
Violation Count vs. the National Corpus
Twin Forks Mdwca has 335 recorded EPA violations, 92% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 8% carry more. 28% of this system's own violations are health-based (95 of 335), and it ranks #17,340 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)
335 Higher than most more violations than 92% 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 Twin Forks Mdwca
95 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for NM3571119.
Sources: EPA SDWIS
Nationwide peers
335 violations · 1,274 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 Twin Forks 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.