What was found in ZIP 76657
The level at this ZIP's main supplier, the highest level anywhere in it, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 1182 µg/L 30% of the EPA limit 4000 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019 | 2/3 | SYR4 |
| Nitrate | 1180 µg/L 12% of the EPA limit 10000 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019 | 2/3 | SYR4 |
| Nitrate-Nitrite | 68.5 µg/L 0.7% of the EPA limit 10000 µg/L Main supplier: CITY OF WACO · 146,241 people · 2015
Highest in the ZIP: 970 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2015 | 2/3 | SYR4 |
| Copper | 715.7 µg/L 55% of the EPA limit 1300 µg/L Main supplier: CITY OF WACO · 146,241 people · 2018
Highest in the ZIP: 808.5 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2017 | 3/3 | SYR4 |
| Cyanide | 189.5 µg/L 95% of the EPA limit 200 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019 | 2/3 | SYR4 |
| TTHM | 62.04 µg/L 78% of the EPA limit 80 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019
Highest in the ZIP: 127.5 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2019 | 3/3 | SYR4 |
| Barium | 77.365 µg/L 3.9% of the EPA limit 2000 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019 | 2/3 | SYR4 |
| Lithium | 61.9 µg/L No EPA limit set Highest in the ZIP: CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2025 | 1/3 | UCMR-5 |
| Chloroform | 23 µg/L No EPA limit set Main supplier: CITY OF WACO · 146,241 people · 2019
Highest in the ZIP: 61.35 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 29 µg/L 48% of the EPA limit 60 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019
Highest in the ZIP: 60.575 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 22 µg/L No EPA limit set Main supplier: CITY OF WACO · 146,241 people · 2019
Highest in the ZIP: 41.46 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 18.105 µg/L No EPA limit set Main supplier: CITY OF WACO · 146,241 people · 2019
Highest in the ZIP: 36.72 µg/L — CITY OF MCGREGOR · 6,037 people · 2019 | 3/3 | SYR4 |
| Nitrite | 26.5 µg/L 2.7% of the EPA limit 1000 µg/L Main supplier: CITY OF WACO · 146,241 people · 2015 | 1/3 | SYR4 |
| Trichloroacetic Acid | 7.315 µg/L No EPA limit set Main supplier: CITY OF WACO · 146,241 people · 2019
Highest in the ZIP: 26.14 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 17.2 µg/L No EPA limit set Main supplier: CITY OF WACO · 146,241 people · 2019
Highest in the ZIP: 24.85 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 13.355 µg/L No EPA limit set Main supplier: CITY OF WACO · 146,241 people · 2019
Highest in the ZIP: 16.5 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2019 | 3/3 | SYR4 |
| Selenium | 15.523 µg/L 31% of the EPA limit 50 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019 | 1/3 | SYR4 |
| Lead | 14.54 µg/L 97% of the EPA limit 15 µg/L Main supplier: CITY OF WACO · 146,241 people · 2018 | 3/3 | SYR4 |
| Bromoform | 5.73 µg/L No EPA limit set Main supplier: CITY OF WACO · 146,241 people · 2019
Highest in the ZIP: 13.58 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2019 | 3/3 | SYR4 |
| Bromate | 13 µg/L 130% of the EPA limit, at the 95th percentile of samples — 10 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019 | 1/3 | SYR4 |
| Dibromoacetic Acid | 5.2 µg/L No EPA limit set Main supplier: CITY OF WACO · 146,241 people · 2019
Highest in the ZIP: 9.6 µg/L — CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 5.45 µg/L No EPA limit set Main supplier: CITY OF WACO · 146,241 people · 2019 | 3/3 | SYR4 |
| Arsenic | 4.884 µg/L 49% of the EPA limit 10 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019 | 1/3 | SYR4 |
| Dalapon | 1.765 µg/L 0.9% of the EPA limit 200 µg/L Highest in the ZIP: CORYELL CITY WATER SUPPLY DISTRICT · 6,042 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: CITY OF WACO · 146,241 people · 2017 | 1/3 | SYR4 |
| Antimony, Total | 0.4491 µg/L 7.5% of the EPA limit 6 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019 | 1/3 | SYR4 |
| Atrazine | 0.3000 µg/L 10% of the EPA limit 3 µg/L Main supplier: CITY OF WACO · 146,241 people · 2019 | 2/3 | SYR4 |
| Pfba | 0.0076 µg/L No EPA limit set Main supplier: CITY OF WACO · 146,241 people · 2024 | 3/3 | UCMR-5 |
| Lead | 0.0019 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: CITY OF WACO · 146,241 people · 2024
Highest in the ZIP: 0.0023 mg/L — CITY OF MCGREGOR · 6,037 people · 2023 | 3/3 | 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.
Water suppliers serving ZIP 76657
| Supplier | State | Population served |
|---|---|---|
| CITY OF WACO | TX | 146,241 |
| CORYELL CITY WATER SUPPLY DISTRICT | TX | 6,042 |
| CITY OF MCGREGOR | TX | 6,037 |
Frequently asked questions about ZIP 76657 tap water
Is the tap water in ZIP 76657 safe to drink?
EPA testing detected 29 contaminants across the water suppliers serving ZIP 76657. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and your utility's annual Consumer Confidence Report for the official status.
Which water suppliers serve ZIP 76657?
3 public water suppliers report EPA drinking-water monitoring for ZIP 76657. Each is listed above with its population served.
What contaminants are in ZIP 76657's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, Cyanide, and others across this ZIP's suppliers. The full list with levels and sources is above.