What was found in Floresville'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 |
|---|---|---|---|
| Fluoride | 385 µg/L 9.6% of the EPA limit 4000 µg/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2017
Highest in the city: 517.5 µg/L — THREE OAKS WSC · 2,007 people · 2019 | 4/4 | SYR4 |
| Copper | 135.99999999999994 µg/L 10% of the EPA limit 1300 µg/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 379 µg/L — OAK HILLS WSC · 6,225 people · 2019 | 4/4 | SYR4 |
| Barium | 116.65 µg/L 5.8% of the EPA limit 2000 µg/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 188.25 µg/L — THREE OAKS WSC · 2,007 people · 2018 | 4/4 | SYR4 |
| Nitrate | 70.49999999999997 µg/L 0.7% of the EPA limit 10000 µg/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 80 µg/L — OAK HILLS WSC · 6,225 people · 2019 | 4/4 | SYR4 |
| Lead | 2.815 µg/L 19% of the EPA limit 15 µg/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 69.94999999999996 µg/L — PICOSA WSC · 3,210 people · 2019 | 4/4 | SYR4 |
| Nitrate-Nitrite | 66 µg/L 0.7% of the EPA limit 10000 µg/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2015 | 3/4 | SYR4 |
| Lithium | 58.6 µg/L No EPA limit set Main supplier: CITY OF FLORESVILLE · 8,306 people · 2024 | 2/4 | UCMR-5 |
| TTHM | 14.28 µg/L 18% of the EPA limit 80 µg/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 22.394999999999996 µg/L — OAK HILLS WSC · 6,225 people · 2019 | 4/4 | SYR4 |
| Gross Beta Particle Activity | 12.174999999999999 pCi/L No EPA limit set Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 12.24 pCi/L — THREE OAKS WSC · 2,007 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 10.999999999999979 µg/L No EPA limit set Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019 | 4/4 | SYR4 |
| Bromoform | 9.779999999999996 µg/L No EPA limit set Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019 | 4/4 | SYR4 |
| Xylenes, Total | 9.6 µg/L 0.1% of the EPA limit 10000 µg/L Highest in the city: PICOSA WSC · 3,210 people · 2019 | 3/4 | SYR4 |
| Bromodichloromethane | 9.2 µg/L No EPA limit set Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019 | 4/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.26 pCi/L 22% of the EPA limit 15 pCi/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 6.55 pCi/L — THREE OAKS WSC · 2,007 people · 2019 | 3/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 2.1799999999999997 µg/L 3.6% of the EPA limit 60 µg/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 6.419999999999999 µg/L — PICOSA WSC · 3,210 people · 2019 | 4/4 | SYR4 |
| Chloroform | 6.249999999999999 µg/L No EPA limit set Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019 | 4/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 5.55 µg/L 93% of the EPA limit 6 µg/L Highest in the city: THREE OAKS WSC · 2,007 people · 2019 | 2/4 | SYR4 |
| Combined Radium (-226 And -228) | 4.409999999999999 pCi/L 88% of the EPA limit 5 pCi/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2016 | 4/4 | SYR4 |
| Dibromoacetic Acid | 1.28 µg/L No EPA limit set Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 4.109999999999999 µg/L — PICOSA WSC · 3,210 people · 2019 | 4/4 | SYR4 |
| Selenium | 3.1 µg/L 6.2% of the EPA limit 50 µg/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 4.1 µg/L — OAK HILLS WSC · 6,225 people · 2017 | 2/4 | SYR4 |
| Dichloroacetic Acid | 1.3 µg/L No EPA limit set Main supplier: CITY OF FLORESVILLE · 8,306 people · 2019
Highest in the city: 3.5799999999999983 µg/L — OAK HILLS WSC · 6,225 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 2.9 µg/L No EPA limit set Highest in the city: OAK HILLS WSC · 6,225 people · 2019 | 1/4 | SYR4 |
| Ethylbenzene | 1.5 µg/L 0.2% of the EPA limit 700 µg/L Highest in the city: PICOSA WSC · 3,210 people · 2019 | 1/4 | SYR4 |
| Lead | 0.00010 mg/L 0.7% of the EPA limit 0.0150 mg/L Main supplier: CITY OF FLORESVILLE · 8,306 people · 2025
Highest in the city: 0.0022 mg/L — OAK HILLS WSC · 6,225 people · 2025 | 4/4 | LCR |
Each bar shows the measured level as a share of the EPA limit: green is
well under, amber is close to it, red is over. For lead and copper the
limit applies to exactly the 90th-percentile figure shown, so red there
means a real exceedance. For everything else the limit applies to a
running annual average while the figure is the 95th percentile of the
system's samples — over 100% is worth reading, but is not by itself a
violation.
Formal violations are listed separately.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Floresville
| Supplier | Population served |
|---|---|
| CITY OF FLORESVILLE | 8,306 |
| OAK HILLS WSC | 6,225 |
| PICOSA WSC | 3,210 |
| THREE OAKS WSC | 2,007 |
Frequently asked questions about Floresville tap water
Is Floresville tap water safe to drink?
EPA testing detected 24 contaminants in the water serving Floresville. 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 Floresville?
4 public water suppliers report drinking-water monitoring for Floresville, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Floresville's water?
The contaminants EPA monitoring detected in Floresville include Fluoride, Copper, Barium, Nitrate, Lead. 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.