What was found in ZIP 77566
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 |
|---|---|---|---|
| Copper | 2100 µg/L 162% of the EPA limit, at the 95th percentile of samples — 1300 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 1320 µg/L 13% of the EPA limit 10000 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019 | 2/2 | SYR4 |
| Nitrate | 600 µg/L 6% of the EPA limit 10000 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 1157 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Fluoride | 672 µg/L 17% of the EPA limit 4000 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2018
Highest in the ZIP: 723 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Barium | 428.6 µg/L 21% of the EPA limit 2000 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2018 | 2/2 | SYR4 |
| Nitrite | 232 µg/L 23% of the EPA limit 1000 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019 | 2/2 | SYR4 |
| Cyanide | 68 µg/L 34% of the EPA limit 200 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2017 | 2/2 | SYR4 |
| Lithium | 33.1 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2025
Highest in the ZIP: 44 µg/L — CITY OF RICHWOOD · 7,605 people · 2023 | 2/2 | UCMR-5 |
| TTHM | 24.71 µg/L 31% of the EPA limit 80 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 40.15 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 17.63 µg/L 29% of the EPA limit 60 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 27.425 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 9.375 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 16.26 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 6.79 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 13.42 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Chloroform | 7.975 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 12.99 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 7.4 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 10.665 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 7.815 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 9.54 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Lead | 8.9 µg/L 59% of the EPA limit 15 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019 | 2/2 | SYR4 |
| Bromoform | 8.525 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 2.7 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 7.82 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 5.885 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 6.4 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 4.475 pCi/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2018 | 1/2 | SYR4 |
| Selenium | 3.1 µg/L 6.2% of the EPA limit 50 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2018
Highest in the ZIP: 4.2 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the ZIP: 3.65 µg/L — CITY OF RICHWOOD · 7,605 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.37 pCi/L 22% of the EPA limit 15 pCi/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2018 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 2.47 pCi/L 49% of the EPA limit 5 pCi/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2017 | 2/2 | SYR4 |
| Arsenic | 2.2 µg/L 22% of the EPA limit 10 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2018 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.9 µg/L 32% of the EPA limit 6 µg/L Highest in the ZIP: CITY OF RICHWOOD · 7,605 people · 2019 | 1/2 | SYR4 |
| Atrazine | 1.568 µg/L 52% of the EPA limit 3 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019 | 2/2 | SYR4 |
| Combined Uranium | 1.5 µg/L 5% of the EPA limit 30 µg/L Highest in the ZIP: CITY OF RICHWOOD · 7,605 people · 2019 | 1/2 | SYR4 |
| Pfpea | 0.0296 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2025
Highest in the ZIP: 0.1800 µg/L — CITY OF RICHWOOD · 7,605 people · 2023 | 2/2 | UCMR-5 |
| Simazine | 0.0700 µg/L 1.8% of the EPA limit 4 µg/L Highest in the ZIP: CITY OF RICHWOOD · 7,605 people · 2019 | 1/2 | SYR4 |
| Pfba | 0.0138 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2025
Highest in the ZIP: 0.0380 µg/L — CITY OF RICHWOOD · 7,605 people · 2023 | 2/2 | UCMR-5 |
| Nfdha | 0.0313 µg/L No EPA limit set Highest in the ZIP: CITY OF RICHWOOD · 7,605 people · 2023 | 1/2 | UCMR-5 |
| 6:2 Fts | 0.0058 µg/L No EPA limit set Highest in the ZIP: CITY OF RICHWOOD · 7,605 people · 2023 | 1/2 | UCMR-5 |
| Pfhxa | 0.0057 µg/L No EPA limit set Highest in the ZIP: CITY OF RICHWOOD · 7,605 people · 2023 | 1/2 | UCMR-5 |
| PFBS | 0.0045 µg/L No EPA limit set Highest in the ZIP: CITY OF RICHWOOD · 7,605 people · 2023 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2026
Highest in the ZIP: 0.0023 mg/L — CITY OF RICHWOOD · 7,605 people · 2024 | 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.
Water suppliers serving ZIP 77566
| Supplier | State | Population served |
|---|---|---|
| CITY OF LAKE JACKSON | TX | 27,314 |
| CITY OF RICHWOOD | TX | 7,605 |
Frequently asked questions about ZIP 77566 tap water
Is the tap water in ZIP 77566 safe to drink?
EPA testing detected 36 contaminants across the water suppliers serving ZIP 77566. 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 77566?
2 public water suppliers report EPA drinking-water monitoring for ZIP 77566. Each is listed above with its population served.
What contaminants are in ZIP 77566's water?
EPA monitoring detected Copper, Nitrate-Nitrite, Nitrate, Fluoride, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.