Community Water System · PWS TX1080034
Llano Grande Lake Park East
Operator location Mercedes, Texas - 26% of 208 violations are health-based (upper-third health share (> 23%)); surface water source; 1,300 served per SDWIS.
- 1,300
- People served (this PWS)
- 208
- EPA violations (this PWS)
- 55
- Health-based (this PWS)
- Untested
- UCMR5 (this PWS)
Llano Grande Lake Park East standing, high SDWIS violation third
26% of 208 recorded violations are health-based - upper-third health share (> 23%). Corpus terciles use 29,740 systems serving 500+ (the sitemap cohort). Health-based share 26% is upper-third health share (> 23%). Population rank #17,191 of 29,740 among systems serving 500+.
The verdict
Llano Grande Lake Park East sits in the upper third of the sitemap cohort by violation count (208), so the tables below sample a dense compliance trail rather than a near-clean ledger. Population served is mid-pack at 1,300 (mid served population (≤ 3,309)). Health-based share is 26% - most of this ledger is MCL or treatment-technique exceedance. No UCMR5 PFAS test appears for this system in this extract.
- #17,191 of 29,740
- Population · /systems
- #2,057 of 3,040
- Population · TX
- 208
- Total EPA violations on record
- 26%
- 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
- Private
- Connections
- 701
- County
- Hidalgo
- School/Daycare
- No
- MCL Violations
- 26
- Monitoring Violations
- 98
- Treatment Tech Violations
- 29
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 74 | 2025 |
| Public Notice | Other | 36 | 2023 |
| Lead and Copper Rule | TT | 29 | 2022 |
| TTHM | MCL | 26 | 2015 |
| Consumer Confidence Rule | Other | 13 | 2023 |
| Nitrite | MR | 12 | 2023 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2014 |
| Chlorine | MR | 4 | 2017 |
| TTHM | MR | 4 | 2014 |
Violation Count vs. the National Corpus
Llano Grande Lake Park East has 208 recorded EPA violations, 86% of the 29,740 public water systems serving 500+ people nationwide carry fewer, and 14% carry more. 26% of this system's own violations are health-based (55 of 208), and it ranks #17,191 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)
208 Higher than most more violations than 86% 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 Llano Grande Lake Park East
55 health-based rows in the tables above map to MCL or treatment-technique exceedances, verify each contaminant code on the federal SDWIS report for TX1080034.
Sources: EPA SDWIS · Texas Commission on Environmental Quality (TCEQ) - Drinking Water Watch
Nationwide peers
208 violations · 1,300 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 Llano Grande Lake Park East
Use this system's EPA-reported record as a starting filter, not a final verdict.
- See how every tracked system in Texas compares on the same EPA violation measures. Texas 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.