What was found in Zavalla'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 | 1412.5 µg/L 14% of the EPA limit 10000 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 3/4 | SYR4 |
| Nitrate-Nitrite | 940.475 µg/L 9.4% of the EPA limit 10000 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 1340.7 µg/L — RAYLAKE WSC · 63 people · 2015 | 3/4 | SYR4 |
| Fluoride | 1167 µg/L 29% of the EPA limit 4000 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 3/4 | SYR4 |
| TTHM | 246.16 µg/L 308% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 372.2 µg/L — SUN N FUN WATER SUPPLY CORPORATION · 65 people · 2019 | 4/4 | SYR4 |
| Copper | 317.25 µg/L 24% of the EPA limit 1300 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2017 | 4/4 | SYR4 |
| Dibromochloromethane | 88.025 µg/L No EPA limit set Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 151.4 µg/L — SUN N FUN WATER SUPPLY CORPORATION · 65 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 140.51 µg/L No EPA limit set Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 4/4 | SYR4 |
| Chloroform | 137.4 µg/L No EPA limit set Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 4/4 | SYR4 |
| Barium | 79.1 µg/L 4% of the EPA limit 2000 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 3/4 | SYR4 |
| Bromoform | 14.325 µg/L No EPA limit set Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 79.065 µg/L — SUN N FUN WATER SUPPLY CORPORATION · 65 people · 2019 | 3/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 70.59 µg/L 118% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 75.64 µg/L — SUN N FUN WATER SUPPLY CORPORATION · 65 people · 2019 | 4/4 | SYR4 |
| Xylenes, Total | 1.928 µg/L 0% of the EPA limit 10000 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 74.9 µg/L — TX AIRSTREAM HARBOR WATER · 236 people · 2019 | 2/4 | SYR4 |
| Dibromoacetic Acid | 14.36 µg/L No EPA limit set Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 43.275 µg/L — SUN N FUN WATER SUPPLY CORPORATION · 65 people · 2019 | 4/4 | SYR4 |
| Trichloroacetic Acid | 35.535 µg/L No EPA limit set Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 26.72 µg/L No EPA limit set Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 4/4 | SYR4 |
| Chromium | 3.3475 µg/L 3.3% of the EPA limit 100 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 13.6 µg/L — TX AIRSTREAM HARBOR WATER · 236 people · 2018 | 3/4 | SYR4 |
| Lead | 5.136 µg/L 34% of the EPA limit 15 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2017
Highest in the city: 13.33 µg/L — RAYLAKE WSC · 63 people · 2019 | 4/4 | SYR4 |
| Ethylbenzene | 1.1 µg/L 0.2% of the EPA limit 700 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 11.2 µg/L — TX AIRSTREAM HARBOR WATER · 236 people · 2019 | 2/4 | SYR4 |
| Selenium | 1.18 µg/L 2.4% of the EPA limit 50 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 9.4455 µg/L — TX AIRSTREAM HARBOR WATER · 236 people · 2018 | 2/4 | SYR4 |
| Monochloroacetic Acid | 6.31 µg/L No EPA limit set Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 7.315 µg/L — RAYLAKE WSC · 63 people · 2018 | 4/4 | SYR4 |
| Monobromoacetic Acid | 2.655 µg/L No EPA limit set Main supplier: CITY OF ZAVALLA · 880 people · 2019
Highest in the city: 6.93 µg/L — TX AIRSTREAM HARBOR WATER · 236 people · 2019 | 3/4 | SYR4 |
| Gross Beta Particle Activity | 5 pCi/L No EPA limit set Main supplier: CITY OF ZAVALLA · 880 people · 2018 | 2/4 | SYR4 |
| Dalapon | 3.94 µg/L 2% of the EPA limit 200 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 1/4 | SYR4 |
| Arsenic | 2.6 µg/L 26% of the EPA limit 10 µg/L Highest in the city: TX AIRSTREAM HARBOR WATER · 236 people · 2018 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 1.475 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: CITY OF ZAVALLA · 880 people · 2018
Highest in the city: 1.5 pCi/L — RAYLAKE WSC · 63 people · 2016 | 2/4 | SYR4 |
| Toluene | 0.5500 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 1/4 | SYR4 |
| Thallium, Total | 0.3240 µg/L 16% of the EPA limit 2 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 1/4 | SYR4 |
| Beryllium, Total | 0.1200 µg/L 3% of the EPA limit 4 µg/L Main supplier: CITY OF ZAVALLA · 880 people · 2019 | 1/4 | SYR4 |
| Lead | 0.0027 mg/L 18% of the EPA limit 0.0150 mg/L Main supplier: CITY OF ZAVALLA · 880 people · 2025
Highest in the city: 0.0259 mg/L — RAYLAKE WSC · 63 people · 2026 | 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 Zavalla
| Supplier | Population served |
|---|---|
| CITY OF ZAVALLA | 880 |
| TX AIRSTREAM HARBOR WATER | 236 |
| SUN N FUN WATER SUPPLY CORPORATION | 65 |
| RAYLAKE WSC | 63 |
Frequently asked questions about Zavalla tap water
Is Zavalla tap water safe to drink?
EPA testing detected 29 contaminants in the water serving Zavalla. 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 Zavalla?
4 public water suppliers report drinking-water monitoring for Zavalla, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Zavalla's water?
The contaminants EPA monitoring detected in Zavalla include Nitrate, Nitrate-Nitrite, Fluoride, TTHM, Copper. 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.