Transient Non-Community Water System · PWS NM3593221
Heron Lake State Park (Surface Water)
Operator location Los Ojos, New Mexico - 36% of 140 violations are health-based (upper-third health share (> 23%)); surface water source; 150 served per SDWIS.
- 150
- People served (this PWS)
- 140
- EPA violations (this PWS)
- 51
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Heron Lake State Park (Surface Water) standing, high SDWIS violation third
36% of 140 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 36% is upper-third health share (> 23%).
The verdict
Heron Lake State Park (Surface Water) sits in the upper third of the sitemap cohort by violation count (140), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is smaller (150; smaller served population (≤ 999)), so each violation row represents a compact service footprint. Health-based share is 36% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- 140
- Total EPA violations on record
- 36%
- Health-based (MCL / treatment failure)
- 150
- 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
- Transient Non-Community
- Owner Type
- State
- Connections
- 1
- County
- Rio Arriba
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 72
- Treatment Tech Violations
- 47
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Surface Water Treatment Rule | MR | 41 | 2025 |
| Interim Enhanced Surface Water Treatment Rule | MR | 22 | 2025 |
| Interim Enhanced Surface Water Treatment Rule | TT | 17 | 2024 |
| Surface Water Treatment Rule | TT | 16 | 2017 |
| Long Term 2 Enhanced Surface Water Treatment Rule | TT | 14 | 2025 |
| Coliform (TCR) | MR | 5 | 1992 |
| Coliform (TCR) | MCL | 4 | 2014 |
| Revised Total Coliform Rule | Other | 4 | 2016 |
| Revised Total Coliform Rule | MON | 4 | 2020 |
| Public Notice | Other | 3 | 2021 |
Violation Count vs. the National Corpus
Heron Lake State Park (Surface Water) has 140 recorded EPA violations, 80% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 20% carry more. 36% of this system's own violations are health-based (51 of 140), 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)
140 Higher than most more violations than 80% 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 Heron Lake State Park (Surface Water)
51 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for NM3593221.
Sources: EPA SDWIS
Nationwide peers
140 violations · 150 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 Heron Lake State Park
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.