What was found in Fair Oaks Ranch'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 | 1540 µg/L 15% of the EPA limit 10000 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 1532 µg/L 15% of the EPA limit 10000 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 1/2 | SYR4 |
| Fluoride | 667.5 µg/L 17% of the EPA limit 4000 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2017
Highest in the city: 715 µg/L — ENCHANTED OAKS WSC · 66 people · 2019 | 2/2 | SYR4 |
| Copper | 348.7 µg/L 27% of the EPA limit 1300 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 2/2 | SYR4 |
| TTHM | 88.57 µg/L 111% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 36.3 µg/L 61% of the EPA limit 60 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 2/2 | SYR4 |
| Barium | 33.825 µg/L 1.7% of the EPA limit 2000 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2017
Highest in the city: 34.28 µg/L — ENCHANTED OAKS WSC · 66 people · 2019 | 2/2 | SYR4 |
| Chloroform | 28.68 µg/L No EPA limit set Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 27.56 µg/L No EPA limit set Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 23.375 µg/L No EPA limit set Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 19.06 µg/L No EPA limit set Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 1/2 | SYR4 |
| Lithium | 17 µg/L No EPA limit set Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2024 | 1/2 | UCMR-5 |
| Bromoform | 10.64 µg/L No EPA limit set Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 9.675 µg/L No EPA limit set Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 1/2 | SYR4 |
| Monochloroacetic Acid | 7.97 µg/L No EPA limit set Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019
Highest in the city: 9.1 µg/L — ENCHANTED OAKS WSC · 66 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 8 µg/L No EPA limit set Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 1/2 | SYR4 |
| Lead | 5.84 µg/L 39% of the EPA limit 15 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 2/2 | SYR4 |
| Selenium | 3 µg/L 6% of the EPA limit 50 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2017
Highest in the city: 5.5 µg/L — ENCHANTED OAKS WSC · 66 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.95 pCi/L 26% of the EPA limit 15 pCi/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2016
Highest in the city: 4 pCi/L — ENCHANTED OAKS WSC · 66 people · 2019 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 2.9 µg/L 48% of the EPA limit 6 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 1/2 | SYR4 |
| Xylenes, Total | 2.8 µg/L 0% of the EPA limit 10000 µg/L Highest in the city: ENCHANTED OAKS WSC · 66 people · 2019 | 1/2 | SYR4 |
| Combined Uranium | 2.62 µg/L 8.7% of the EPA limit 30 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2016 | 2/2 | SYR4 |
| Monobromoacetic Acid | 2.5 µg/L No EPA limit set Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 2.4 pCi/L 48% of the EPA limit 5 pCi/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2016 | 2/2 | SYR4 |
| Ethylbenzene | 0.6000 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: ENCHANTED OAKS WSC · 66 people · 2019 | 1/2 | SYR4 |
| Thallium, Total | 0.5100 µg/L 26% of the EPA limit 2 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2017 | 1/2 | SYR4 |
| Ethylene Dibromide | 0.0100 µg/L 20% of the EPA limit 0.0500 µg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2017 | 1/2 | SYR4 |
| Lead | 0.0022 mg/L 15% of the EPA limit 0.0150 mg/L Main supplier: FAIR OAKS RANCH UTILITIES · 9,768 people · 2025
Highest in the city: 0.0028 mg/L — ENCHANTED OAKS WSC · 66 people · 2025 | 2/2 | 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 Fair Oaks Ranch
| Supplier | Population served |
|---|---|
| FAIR OAKS RANCH UTILITIES | 9,768 |
| ENCHANTED OAKS WSC | 66 |
Frequently asked questions about Fair Oaks Ranch tap water
Is Fair Oaks Ranch tap water safe to drink?
EPA testing detected 28 contaminants in the water serving Fair Oaks Ranch. 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 Fair Oaks Ranch?
2 public water suppliers report drinking-water monitoring for Fair Oaks Ranch, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Fair Oaks Ranch's water?
The contaminants EPA monitoring detected in Fair Oaks Ranch include Nitrate, Nitrate-Nitrite, Fluoride, Copper, TTHM. 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.