What was found in Lake Jackson'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 |
|---|---|---|---|
| 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 | 600 µg/L 6% of the EPA limit 10000 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the city: 1550 µg/L — BRAZOSPORT WATER AUTHORITY · 0 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 | 1/2 | SYR4 |
| Chlorite | 826 µg/L 83% of the EPA limit 1000 µg/L Highest in the city: BRAZOSPORT WATER AUTHORITY · 0 people · 2019 | 1/2 | SYR4 |
| Fluoride | 672 µg/L 17% of the EPA limit 4000 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2018 | 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 | 1/2 | SYR4 |
| Cyanide | 68 µg/L 34% of the EPA limit 200 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2017
Highest in the city: 154 µg/L — BRAZOSPORT WATER AUTHORITY · 0 people · 2019 | 2/2 | SYR4 |
| Lithium | 33.1 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2025 | 1/2 | UCMR-5 |
| 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 city: 28.99 µg/L — BRAZOSPORT WATER AUTHORITY · 0 people · 2019 | 2/2 | SYR4 |
| TTHM | 24.71 µg/L 31% of the EPA limit 80 µg/L Main supplier: CITY OF LAKE JACKSON · 27,314 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 city: 21.005 µg/L — BRAZOSPORT WATER AUTHORITY · 0 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 city: 15.4 µg/L — BRAZOSPORT WATER AUTHORITY · 0 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 |
| Dibromoacetic Acid | 7.815 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the city: 8.1 µg/L — BRAZOSPORT WATER AUTHORITY · 0 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 7.4 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 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 city: 7 µg/L — BRAZOSPORT WATER AUTHORITY · 0 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 | 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
Highest in the city: 4.6 pCi/L — BRAZOSPORT WATER AUTHORITY · 0 people · 2015 | 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 city: 4.59 µg/L — BRAZOSPORT WATER AUTHORITY · 0 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 |
| Selenium | 3.1 µg/L 6.2% of the EPA limit 50 µg/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 |
| 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 |
| Di(2-ethylhexyl) Phthalate | 1.1885 µg/L 20% of the EPA limit 6 µg/L Highest in the city: BRAZOSPORT WATER AUTHORITY · 0 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2019
Highest in the city: 1.1 µg/L — BRAZOSPORT WATER AUTHORITY · 0 people · 2019 | 2/2 | SYR4 |
| 2,4-D | 0.1000 µg/L 0.1% of the EPA limit 70 µg/L Highest in the city: BRAZOSPORT WATER AUTHORITY · 0 people · 2019 | 1/2 | SYR4 |
| Simazine | 0.1000 µg/L 2.5% of the EPA limit 4 µg/L Highest in the city: BRAZOSPORT WATER AUTHORITY · 0 people · 2019 | 1/2 | SYR4 |
| Pfpea | 0.0296 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2025 | 1/2 | UCMR-5 |
| Pfba | 0.0138 µg/L No EPA limit set Main supplier: CITY OF LAKE JACKSON · 27,314 people · 2025 | 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 | 1/2 | 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 Lake Jackson
| Supplier | Population served |
|---|---|
| CITY OF LAKE JACKSON | 27,314 |
| BRAZOSPORT WATER AUTHORITY | 0 |
Frequently asked questions about Lake Jackson tap water
Is Lake Jackson tap water safe to drink?
EPA testing detected 33 contaminants in the water serving Lake Jackson. 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 Lake Jackson?
2 public water suppliers report drinking-water monitoring for Lake Jackson, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Lake Jackson's water?
The contaminants EPA monitoring detected in Lake Jackson include Copper, Nitrate, Nitrate-Nitrite, Chlorite, Fluoride. 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.