LLANO GRANDE LAKE PARK EAST
PWS ID: TX1080034 · MERCEDES, Texas 78570-7108
Population Served
1,300
Total Violations
208
Health-Based Violations
55
Water Source
Surface Water
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 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.