What was found in ZIP 75104
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 | 1402.55 µg/L 35% of the EPA limit 4000 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2017 | 1/2 | SYR4 |
| Nitrate | 745 µg/L 7.5% of the EPA limit 10000 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2019 | 1/2 | SYR4 |
| Nitrate-Nitrite | 723.8 µg/L 7.2% of the EPA limit 10000 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2015 | 1/2 | SYR4 |
| Copper | 375.2 µg/L 29% of the EPA limit 1300 µg/L Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2018
Highest in the ZIP: 472.7 µg/L — CITY OF CEDAR HILL · 50,904 people · 2019 | 2/2 | SYR4 |
| Barium | 36.8 µg/L 1.8% of the EPA limit 2000 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2019 | 1/2 | SYR4 |
| TTHM | 35.045 µg/L 44% of the EPA limit 80 µg/L Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 24.375 µg/L 41% of the EPA limit 60 µg/L Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 17.24 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019 | 2/2 | SYR4 |
| Chloroform | 12.855 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019
Highest in the ZIP: 15.395 µg/L — CITY OF CEDAR HILL · 50,904 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 12.41 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019 | 2/2 | SYR4 |
| Lithium | 12.1 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2025 | 1/2 | UCMR-5 |
| Nitrite | 11.45 µg/L 1.1% of the EPA limit 1000 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2015 | 1/2 | SYR4 |
| Lead | 6.8955 µg/L 46% of the EPA limit 15 µg/L Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2018
Highest in the ZIP: 9.808 µg/L — CITY OF CEDAR HILL · 50,904 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 9.2925 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019 | 2/2 | SYR4 |
| Xylenes, Total | 8.44 µg/L 0.1% of the EPA limit 10000 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2019 | 1/2 | SYR4 |
| Cyanide | 7.28 µg/L 3.6% of the EPA limit 200 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2017 | 1/2 | SYR4 |
| Monochloroacetic Acid | 6.64 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 6.16 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019 | 2/2 | SYR4 |
| Bromoform | 5.202 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 3.5 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 3.175 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2019 | 2/2 | SYR4 |
| Ethylbenzene | 1.34 µg/L 0.2% of the EPA limit 700 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2019 | 1/2 | SYR4 |
| Selenium | 1.1 µg/L 2.2% of the EPA limit 50 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2019 | 1/2 | SYR4 |
| Arsenic | 0.8100 µg/L 8.1% of the EPA limit 10 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2019 | 1/2 | SYR4 |
| Simazine | 0.1270 µg/L 3.2% of the EPA limit 4 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2019 | 1/2 | SYR4 |
| Atrazine | 0.1000 µg/L 3.3% of the EPA limit 3 µg/L Highest in the ZIP: CITY OF CEDAR HILL · 50,904 people · 2019 | 1/2 | SYR4 |
| PFOS | 0.0820 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2025 | 1/2 | UCMR-5 |
| Pfba | 0.0122 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2025 | 2/2 | UCMR-5 |
| Pfpea | 0.0117 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2025 | 2/2 | UCMR-5 |
| Pfhxa | 0.0115 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2025 | 2/2 | UCMR-5 |
| PFBS | 0.0051 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2025 | 2/2 | UCMR-5 |
| PFOA | 0.0049 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2025 | 1/2 | UCMR-5 |
| Pfhpa | 0.0036 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2025 | 1/2 | UCMR-5 |
| PFHXS | 0.0033 µg/L No EPA limit set Main supplier: CITY OF GRAND PRAIRIE · 201,843 people · 2025 | 1/2 | UCMR-5 |
| Lead | 0.0012 mg/L 8% of the EPA limit 0.0150 mg/L Main supplier: CITY OF GRAND PRAIRIE · 201,843 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 75104
| Supplier | State | Population served |
|---|---|---|
| CITY OF GRAND PRAIRIE | TX | 201,843 |
| CITY OF CEDAR HILL | TX | 50,904 |
Frequently asked questions about ZIP 75104 tap water
Is the tap water in ZIP 75104 safe to drink?
EPA testing detected 35 contaminants across the water suppliers serving ZIP 75104. 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 75104?
2 public water suppliers report EPA drinking-water monitoring for ZIP 75104. Each is listed above with its population served.
What contaminants are in ZIP 75104's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.