What was found in San Angelo'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 |
|---|---|---|---|
| Nitrate | 630 µg/L 6.3% of the EPA limit 10000 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 9540 µg/L — CONCHO RURAL WATER GRAPE CREEK · 5,049 people · 2019 | 11/13 | SYR4 |
| Nitrate-Nitrite | 630 µg/L 6.3% of the EPA limit 10000 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2014
Highest in the city: 7800 µg/L — CONCHO RURAL WATER N CONCHO LAKE ESTATES · 1,470 people · 2015 | 10/13 | SYR4 |
| Fluoride | 1115 µg/L 28% of the EPA limit 4000 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019 | 11/13 | SYR4 |
| Copper | 233 µg/L 18% of the EPA limit 1300 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2018
Highest in the city: 318 µg/L — RED CREEK MUD · 897 people · 2018 | 12/13 | SYR4 |
| Nitrite | 287 µg/L 29% of the EPA limit 1000 µg/L Highest in the city: CONCHO RURAL WATER GRAPE CREEK · 5,049 people · 2018 | 2/13 | SYR4 |
| Barium | 193.7 µg/L 9.7% of the EPA limit 2000 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 207.2 µg/L — CONCHO RURAL WATER PECAN CREEK · 1,275 people · 2019 | 11/13 | SYR4 |
| Cyanide | 143.2 µg/L 72% of the EPA limit 200 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019 | 2/13 | SYR4 |
| TTHM | 65.83 µg/L 82% of the EPA limit 80 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 85.6 µg/L — RED CREEK MUD · 897 people · 2019 | 12/13 | SYR4 |
| Lithium | 50.1 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2024
Highest in the city: 64.1 µg/L — CONCHO RURAL WATER GRAPE CREEK · 5,049 people · 2023 | 2/13 | UCMR-5 |
| Gross Beta Particle Activity | 55.1 pCi/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2016 | 4/13 | SYR4 |
| Combined Radium (-226 And -228) | 42.68 pCi/L 854% of the EPA limit, at the 95th percentile of samples — 5 pCi/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2016 | 8/13 | SYR4 |
| Bromoform | 32.575 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 40.445 µg/L — RED CREEK MUD · 897 people · 2019 | 12/13 | SYR4 |
| Total Haloacetic Acids (HAA5) | 35.46 µg/L 59% of the EPA limit 60 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 36.8 µg/L — TWIN BUTTES WATER SYSTEM · 42 people · 2019 | 12/13 | SYR4 |
| Gross Alpha, Excl. Radon And U | 32.76 pCi/L 218% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2016 | 7/13 | SYR4 |
| Dibromochloromethane | 22.75 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 31.11 µg/L — TWIN BUTTES WATER SYSTEM · 42 people · 2019 | 12/13 | SYR4 |
| Lead | 9.418 µg/L 63% of the EPA limit 15 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2018
Highest in the city: 28.085 µg/L — CONCHO RURAL WATER PECAN CREEK · 1,275 people · 2019 | 11/13 | SYR4 |
| Selenium | 8.437 µg/L 17% of the EPA limit 50 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 26.34 µg/L — CONCHO RURAL WATER WATER VALLEY · 123 people · 2018 | 10/13 | SYR4 |
| Dibromoacetic Acid | 19.4 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 21.72 µg/L — TWIN BUTTES WATER SYSTEM · 42 people · 2019 | 12/13 | SYR4 |
| Bromodichloromethane | 16.175 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 17.1 µg/L — TWIN BUTTES WATER SYSTEM · 42 people · 2019 | 10/13 | SYR4 |
| Combined Uranium | 1.84 µg/L 6.1% of the EPA limit 30 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2016
Highest in the city: 10.6 µg/L — CONCHO RURAL WATER WATER VALLEY · 123 people · 2018 | 11/13 | SYR4 |
| Dichloroacetic Acid | 9.265 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 10.47 µg/L — RED CREEK MUD · 897 people · 2019 | 7/13 | SYR4 |
| Chromium | 0.9570 µg/L 1% of the EPA limit 100 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 9.61 µg/L — BROWNS POOL AND PARK · 50 people · 2019 | 11/13 | SYR4 |
| Chloroform | 7.91 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 9.065 µg/L — CONCHO RURAL WATER THE OAKS · 825 people · 2019 | 10/13 | SYR4 |
| Monochloroacetic Acid | 8.02 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 8.54 µg/L — TOM GREEN COUNTY FWSD 3 · 1,002 people · 2019 | 9/13 | SYR4 |
| Arsenic | 2.5625 µg/L 26% of the EPA limit 10 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 8.37 µg/L — CONCHO RURAL WATER WATER VALLEY · 123 people · 2018 | 10/13 | SYR4 |
| Trichloroacetic Acid | 3.6 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019
Highest in the city: 4.4 µg/L — RED CREEK MUD · 897 people · 2019 | 6/13 | SYR4 |
| Monobromoacetic Acid | 3.76 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019 | 7/13 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 3.6 µg/L 60% of the EPA limit 6 µg/L Highest in the city: TOM GREEN COUNTY FWSD 3 · 1,002 people · 2019 | 1/13 | SYR4 |
| Xylenes, Total | 3.469 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: CONCHO RURAL WATER WATER VALLEY · 123 people · 2019 | 4/13 | SYR4 |
| Dichloromethane | 1 µg/L 20% of the EPA limit 5 µg/L Highest in the city: TOM GREEN COUNTY FWSD 3 · 1,002 people · 2019 | 1/13 | SYR4 |
| Carbon Tetrachloride | 0.9000 µg/L 18% of the EPA limit 5 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019 | 1/13 | SYR4 |
| Ethylbenzene | 0.8845 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: CONCHO RURAL WATER WATER VALLEY · 123 people · 2019 | 2/13 | SYR4 |
| Thallium, Total | 0.4360 µg/L 22% of the EPA limit 2 µg/L Highest in the city: CONCHO RURAL WATER PECAN CREEK · 1,275 people · 2019 | 1/13 | SYR4 |
| Antimony, Total | 0.3850 µg/L 6.4% of the EPA limit 6 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019 | 1/13 | SYR4 |
| Atrazine | 0.1000 µg/L 3.3% of the EPA limit 3 µg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2019 | 1/13 | SYR4 |
| PFBS | 0.0084 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2024
Highest in the city: 0.0139 µg/L — CONCHO RURAL WATER GRAPE CREEK · 5,049 people · 2024 | 2/13 | UCMR-5 |
| Pfba | 0.0102 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2024
Highest in the city: 0.0104 µg/L — CONCHO RURAL WATER GRAPE CREEK · 5,049 people · 2024 | 2/13 | UCMR-5 |
| PFHXS | 0.0097 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2024 | 2/13 | UCMR-5 |
| Pfhxa | 0.0040 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2024 | 1/13 | UCMR-5 |
| Lead | 0.0040 mg/L 26% of the EPA limit 0.0150 mg/L Main supplier: CITY OF SAN ANGELO · 105,229 people · 2024 | 13/13 | LCR |
| Pfpea | 0.0030 µg/L No EPA limit set Main supplier: CITY OF SAN ANGELO · 105,229 people · 2024 | 1/13 | UCMR-5 |
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 San Angelo
| Supplier | Population served |
|---|---|
| CITY OF SAN ANGELO | 105,229 |
| CONCHO RURAL WATER GRAPE CREEK | 5,049 |
| CONCHO RURAL WATER N CONCHO LAKE ESTATES | 1,470 |
| CONCHO RURAL WATER PECAN CREEK | 1,275 |
| TOM GREEN COUNTY FWSD 3 | 1,002 |
| RED CREEK MUD | 897 |
| CONCHO RURAL WATER THE OAKS | 825 |
| CONCHO RURAL WATER DEER VALLEY ESTATES | 327 |
| THE HACIENDAS AT CHRISTOVAL RANCH | 132 |
| CONCHO RURAL WATER WATER VALLEY | 123 |
| BROWNS POOL AND PARK | 50 |
| WEST TEXAS BOYS RANCH | 48 |
| TWIN BUTTES WATER SYSTEM | 42 |
Frequently asked questions about San Angelo tap water
Is San Angelo tap water safe to drink?
EPA testing detected 41 contaminants in the water serving San Angelo. 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 Angelo?
13 public water suppliers report drinking-water monitoring for San Angelo, Texas to the EPA. Each is listed above with its population served.
What contaminants are in San Angelo's water?
The contaminants EPA monitoring detected in San Angelo include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Nitrite. 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.