What was found in Dickinson'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-Nitrite | 2502 µg/L 25% of the EPA limit 10000 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2018 | 2/2 | SYR4 |
| Nitrate | 2260 µg/L 23% of the EPA limit 10000 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 2/2 | SYR4 |
| Fluoride | 686 µg/L 17% of the EPA limit 4000 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019
Highest in the city: 1568 µg/L — WINDSONG PARK · 78 people · 2019 | 2/2 | SYR4 |
| Copper | 677.05 µg/L 52% of the EPA limit 1300 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019
Highest in the city: 1231.6 µg/L — WINDSONG PARK · 78 people · 2019 | 2/2 | SYR4 |
| Nitrite | 479.5 µg/L 48% of the EPA limit 1000 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 2/2 | SYR4 |
| Barium | 117.8 µg/L 5.9% of the EPA limit 2000 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019
Highest in the city: 269.1 µg/L — WINDSONG PARK · 78 people · 2019 | 2/2 | SYR4 |
| Cyanide | 80 µg/L 40% of the EPA limit 200 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2017 | 1/2 | SYR4 |
| TTHM | 69.295 µg/L 87% of the EPA limit 80 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 27.85 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 27.84 µg/L 46% of the EPA limit 60 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 21.775 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Bromoform | 19.195 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Chloroform | 19.125 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 2/2 | SYR4 |
| Lithium | 17.4 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2023 | 1/2 | UCMR-5 |
| Dichloroacetic Acid | 16.09 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 9.7 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Lead | 9.04 µg/L 60% of the EPA limit 15 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 7.67 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Gross Beta Particle Activity | 5.865 pCi/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2016 | 2/2 | SYR4 |
| Monochloroacetic Acid | 5.355 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Arsenic | 3.9 µg/L 39% of the EPA limit 10 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Selenium | 3.59 µg/L 7.2% of the EPA limit 50 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Monobromoacetic Acid | 1.84 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Dalapon | 1.8 µg/L 0.9% of the EPA limit 200 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 1 pCi/L 20% of the EPA limit 5 pCi/L Highest in the city: WINDSONG PARK · 78 people · 2013 | 1/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.9100 µg/L 15% of the EPA limit 6 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 2/2 | SYR4 |
| Dichloromethane | 0.6850 µg/L 14% of the EPA limit 5 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Atrazine | 0.1630 µg/L 5.4% of the EPA limit 3 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Simazine | 0.1590 µg/L 4% of the EPA limit 4 µg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2019 | 1/2 | SYR4 |
| Pfpea | 0.1570 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2023 | 1/2 | UCMR-5 |
| Pfba | 0.0121 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2023 | 1/2 | UCMR-5 |
| Pfhxa | 0.0054 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2023 | 1/2 | UCMR-5 |
| PFBS | 0.0038 µg/L No EPA limit set Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2023 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: GALVESTON COUNTY WCID 1 · 30,399 people · 2023
Highest in the city: 0.00060 mg/L — WINDSONG PARK · 78 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.
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 Dickinson
| Supplier | Population served |
|---|---|
| GALVESTON COUNTY WCID 1 | 30,399 |
| WINDSONG PARK | 78 |
Frequently asked questions about Dickinson tap water
Is Dickinson tap water safe to drink?
EPA testing detected 34 contaminants in the water serving Dickinson. 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 Dickinson?
2 public water suppliers report drinking-water monitoring for Dickinson, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Dickinson's water?
The contaminants EPA monitoring detected in Dickinson include Nitrate-Nitrite, Nitrate, Fluoride, Copper, Nitrite. 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.