What was found in San Leon's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Copper | 225.5 µg/L 17% of the EPA limit 1300 µg/L Main supplier: SAN LEON MUD · 11,622 people · 2018 | 1/1 | SYR4 |
| TTHM | 73.9 µg/L 92% of the EPA limit 80 µg/L Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Dibromochloromethane | 32.03 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 29.3 µg/L 49% of the EPA limit 60 µg/L Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 23.25 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Lithium | 17.5 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2025 | 1/1 | UCMR-5 |
| Chloroform | 17.33 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Bromoform | 16.7 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Lead | 15.025 µg/L 100% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: SAN LEON MUD · 11,622 people · 2018 | 1/1 | SYR4 |
| Dichloroacetic Acid | 13.22 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 10.97 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 6.705 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 6.6 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Monobromoacetic Acid | 1.61 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2019 | 1/1 | SYR4 |
| Pfpea | 0.0749 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2025 | 1/1 | UCMR-5 |
| Pfba | 0.0308 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0044 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2025 | 1/1 | UCMR-5 |
| PFBS | 0.0034 µg/L No EPA limit set Main supplier: SAN LEON MUD · 11,622 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SAN LEON MUD · 11,622 people · 2024 | 1/1 | LCR |
Water suppliers serving San Leon
| Supplier | Population served |
|---|---|
| SAN LEON MUD | 11,622 |
Frequently asked questions about San Leon tap water
Is San Leon tap water safe to drink?
EPA testing detected 19 contaminants in the water serving San Leon. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve San Leon?
1 public water supplier report drinking-water monitoring for San Leon, Texas to the EPA. Each is listed above with its population served.
What contaminants are in San Leon's water?
The contaminants EPA monitoring detected in San Leon include Copper, TTHM, Dibromochloromethane, Total Haloacetic Acids (HAA5), Bromodichloromethane. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.