What was found in Dublin'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 | 1350 µg/L 14% of the EPA limit 10000 µg/L Highest in the city: EQUESTRIAN ESTATES · 129 people · 2019 | 1/3 | SYR4 |
| Nitrate-Nitrite | 1316 µg/L 13% of the EPA limit 10000 µg/L Highest in the city: EQUESTRIAN ESTATES · 129 people · 2015 | 1/3 | SYR4 |
| Fluoride | 320.9 µg/L 8% of the EPA limit 4000 µg/L Highest in the city: EQUESTRIAN ESTATES · 129 people · 2019 | 1/3 | SYR4 |
| Barium | 230 µg/L 12% of the EPA limit 2000 µg/L Highest in the city: EQUESTRIAN ESTATES · 129 people · 2019 | 1/3 | SYR4 |
| Copper | 103.1 µg/L 7.9% of the EPA limit 1300 µg/L Main supplier: CITY OF DUBLIN · 3,388 people · 2016
Highest in the city: 120 µg/L — GREEN CREEK WSC · 555 people · 2018 | 3/3 | SYR4 |
| TTHM | 97.78 µg/L 122% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: CITY OF DUBLIN · 3,388 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 66.8 µg/L 111% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: CITY OF DUBLIN · 3,388 people · 2019 | 3/3 | SYR4 |
| Bromoform | 44.38 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 41.16 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2019 | 3/3 | SYR4 |
| Lead | 4.71 µg/L 31% of the EPA limit 15 µg/L Main supplier: CITY OF DUBLIN · 3,388 people · 2016
Highest in the city: 37.5 µg/L — EQUESTRIAN ESTATES · 129 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 33.94 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 23.45 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2019
Highest in the city: 26.16 µg/L — GREEN CREEK WSC · 555 people · 2019 | 2/3 | SYR4 |
| Bromodichloromethane | 19.72 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2019 | 3/3 | SYR4 |
| Chloroform | 16.1 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 9.9 pCi/L 66% of the EPA limit 15 pCi/L Highest in the city: EQUESTRIAN ESTATES · 129 people · 2016 | 1/3 | SYR4 |
| Chromium | 8.6865 µg/L 8.7% of the EPA limit 100 µg/L Highest in the city: EQUESTRIAN ESTATES · 129 people · 2019 | 1/3 | SYR4 |
| Trichloroacetic Acid | 8.62 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2019 | 2/3 | SYR4 |
| Monochloroacetic Acid | 7.675 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2019 | 2/3 | SYR4 |
| Gross Beta Particle Activity | 5.63 pCi/L No EPA limit set Highest in the city: EQUESTRIAN ESTATES · 129 people · 2016 | 1/3 | SYR4 |
| Monobromoacetic Acid | 4.06 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2019 | 3/3 | SYR4 |
| Combined Radium (-226 And -228) | 2.7 pCi/L 54% of the EPA limit 5 pCi/L Highest in the city: EQUESTRIAN ESTATES · 129 people · 2016 | 1/3 | SYR4 |
| Selenium | 2.7 µg/L 5.4% of the EPA limit 50 µg/L Highest in the city: EQUESTRIAN ESTATES · 129 people · 2019 | 1/3 | SYR4 |
| Combined Uranium | 1.69 µg/L 5.6% of the EPA limit 30 µg/L Highest in the city: EQUESTRIAN ESTATES · 129 people · 2016 | 1/3 | SYR4 |
| Pfba | 0.0187 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2024 | 1/3 | UCMR-5 |
| PFOS | 0.0098 µg/L No EPA limit set Main supplier: CITY OF DUBLIN · 3,388 people · 2024 | 1/3 | UCMR-5 |
| Lead | 0.0040 mg/L 27% of the EPA limit 0.0150 mg/L Main supplier: CITY OF DUBLIN · 3,388 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.
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 Dublin
| Supplier | Population served |
|---|---|
| CITY OF DUBLIN | 3,388 |
| GREEN CREEK WSC | 555 |
| EQUESTRIAN ESTATES | 129 |
Frequently asked questions about Dublin tap water
Is Dublin tap water safe to drink?
EPA testing detected 26 contaminants in the water serving Dublin. 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 Dublin?
3 public water suppliers report drinking-water monitoring for Dublin, Texas to the EPA. Each is listed above with its population served.
What contaminants are in Dublin's water?
The contaminants EPA monitoring detected in Dublin include Nitrate, Nitrate-Nitrite, Fluoride, Barium, 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.