What was found in ZIP 75491
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 | 2257.5 µg/L 56% of the EPA limit 4000 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2018
Highest in the ZIP: 2878 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2018 | 2/2 | SYR4 |
| Nitrate | 119.6 µg/L 1.2% of the EPA limit 10000 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 403.3 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 130 µg/L 1.3% of the EPA limit 10000 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 322 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Copper | 267 µg/L 21% of the EPA limit 1300 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2017 | 2/2 | SYR4 |
| Nitrite | 47.7 µg/L 4.8% of the EPA limit 1000 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019 | 1/2 | SYR4 |
| Lithium | 38 µg/L No EPA limit set Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2024 | 2/2 | UCMR-5 |
| TTHM | 22.4 µg/L 28% of the EPA limit 80 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019 | 2/2 | SYR4 |
| Barium | 14.3 µg/L 0.7% of the EPA limit 2000 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019 | 2/2 | SYR4 |
| Cyanide | 12.8 µg/L 6.4% of the EPA limit 200 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2018 | 1/2 | SYR4 |
| Bromoform | 7.9825 µg/L No EPA limit set Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 9.035 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.4 pCi/L 23% of the EPA limit 15 pCi/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2018
Highest in the ZIP: 8.99 pCi/L — SOUTH GRAYSON SUD · 6,750 people · 2017 | 2/2 | SYR4 |
| Dibromochloromethane | 8.734 µg/L No EPA limit set Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 8.905 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 5.175 µg/L 8.6% of the EPA limit 60 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 8.185 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Chromium | 3.32 µg/L 3.3% of the EPA limit 100 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 7.43 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.5000 µg/L 8.3% of the EPA limit 6 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 5.78 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2018 | 2/2 | SYR4 |
| Dibromoacetic Acid | 4.42 µg/L No EPA limit set Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 5.6 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 4.392 µg/L No EPA limit set Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 4.695 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Lead | 2.255 µg/L 15% of the EPA limit 15 µg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2017
Highest in the ZIP: 4.19 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 2.83 pCi/L 57% of the EPA limit 5 pCi/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2016 | 2/2 | SYR4 |
| Chloroform | 2.712 µg/L No EPA limit set Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 1.1 µg/L No EPA limit set Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 2.4 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Monochloroacetic Acid | 2.34 µg/L No EPA limit set Highest in the ZIP: SOUTH GRAYSON SUD · 6,750 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 1.095 µg/L No EPA limit set Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2019
Highest in the ZIP: 1.875 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 2/2 | SYR4 |
| Arsenic | 0.7800 µg/L 7.8% of the EPA limit 10 µg/L Highest in the ZIP: SOUTH GRAYSON SUD · 6,750 people · 2019 | 1/2 | SYR4 |
| Antimony, Total | 0.2000 µg/L 3.3% of the EPA limit 6 µg/L Highest in the ZIP: SOUTH GRAYSON SUD · 6,750 people · 2019 | 1/2 | SYR4 |
| 6:2 Fts | 0.0084 µg/L No EPA limit set Highest in the ZIP: SOUTH GRAYSON SUD · 6,750 people · 2024 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SOUTHWEST FANNIN COUNTY SUD · 9,198 people · 2023
Highest in the ZIP: 0.0075 mg/L — SOUTH GRAYSON SUD · 6,750 people · 2025 | 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 75491
| Supplier | State | Population served |
|---|---|---|
| SOUTHWEST FANNIN COUNTY SUD | TX | 9,198 |
| SOUTH GRAYSON SUD | TX | 6,750 |
Frequently asked questions about ZIP 75491 tap water
Is the tap water in ZIP 75491 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 75491. 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 75491?
2 public water suppliers report EPA drinking-water monitoring for ZIP 75491. Each is listed above with its population served.
What contaminants are in ZIP 75491's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.