What was found in ZIP 75090
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 | 1282.5 µg/L 32% of the EPA limit 4000 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 2878 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2018 | 3/4 | SYR4 |
| Nitrate-Nitrite | 418.75 µg/L 4.2% of the EPA limit 10000 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2015 | 4/4 | SYR4 |
| Nitrate | 371.7 µg/L 3.7% of the EPA limit 10000 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 403.3 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 3/4 | SYR4 |
| Copper | 156.8 µg/L 12% of the EPA limit 1300 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 294.5 µg/L — LUELLA SUD · 4,200 people · 2019 | 4/4 | SYR4 |
| TTHM | 68.28 µg/L 85% of the EPA limit 80 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 122.275 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 4/4 | SYR4 |
| Chloroform | 17.89 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 94.645 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 4/4 | SYR4 |
| Barium | 87 µg/L 4.4% of the EPA limit 2000 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 22.87 µg/L 38% of the EPA limit 60 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 62.71 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 4/4 | SYR4 |
| Cyanide | 41.41 µg/L 21% of the EPA limit 200 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/4 | SYR4 |
| Trichloroacetic Acid | 4.22 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 36.03 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/4 | SYR4 |
| Lithium | 30.7 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2023
Highest in the ZIP: 35.6 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2024 | 3/4 | UCMR-5 |
| Dichloroacetic Acid | 8.65 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 30.355 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 26.29 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 19.36 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 24.055 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 4/4 | SYR4 |
| Bromoform | 18.99 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 4/4 | SYR4 |
| Lead | 3.414 µg/L 23% of the EPA limit 15 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 18.392 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2018 | 4/4 | SYR4 |
| Monochloroacetic Acid | 11.58 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 10.32 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 4/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.5 pCi/L 23% of the EPA limit 15 pCi/L Main supplier: CITY OF SHERMAN · 43,645 people · 2017
Highest in the ZIP: 8.99 pCi/L — SOUTH GRAYSON SUD · 6,750 people · 2017 | 2/4 | SYR4 |
| Chromium | 5.955 µg/L 6% of the EPA limit 100 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 7.43 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2019 | 3/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.7800 µg/L 13% of the EPA limit 6 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019
Highest in the ZIP: 5.78 µg/L — SOUTH GRAYSON SUD · 6,750 people · 2018 | 2/4 | SYR4 |
| Selenium | 5.464 µg/L 11% of the EPA limit 50 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/4 | SYR4 |
| Gross Beta Particle Activity | 5.1 pCi/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2017 | 2/4 | SYR4 |
| Monobromoacetic Acid | 5.05 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 3/4 | SYR4 |
| Arsenic | 1.589 µg/L 16% of the EPA limit 10 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 3/4 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L Main supplier: CITY OF SHERMAN · 43,645 people · 2017 | 4/4 | SYR4 |
| 2,4-D | 0.9000 µg/L 1.3% of the EPA limit 70 µg/L Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/4 | SYR4 |
| Thallium, Total | 0.8500 µg/L 43% of the EPA limit 2 µg/L Highest in the ZIP: LUELLA SUD · 4,200 people · 2019 | 1/4 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.7000 µg/L 0.2% of the EPA limit 400 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/4 | SYR4 |
| Antimony, Total | 0.2100 µg/L 3.5% of the EPA limit 6 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 2/4 | SYR4 |
| Atrazine | 0.1000 µg/L 3.3% of the EPA limit 3 µg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2019 | 1/4 | SYR4 |
| 6:2 Fts | 0.0084 µg/L No EPA limit set Highest in the ZIP: SOUTH GRAYSON SUD · 6,750 people · 2024 | 1/4 | UCMR-5 |
| Pfba | 0.0083 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2023 | 1/4 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF SHERMAN · 43,645 people · 2025
Highest in the ZIP: 0.0075 mg/L — SOUTH GRAYSON SUD · 6,750 people · 2025 | 4/4 | LCR |
| Pfhxa | 0.0038 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2023 | 1/4 | UCMR-5 |
| Pfpea | 0.0038 µg/L No EPA limit set Main supplier: CITY OF SHERMAN · 43,645 people · 2023 | 1/4 | UCMR-5 |
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 75090
| Supplier | State | Population served |
|---|---|---|
| CITY OF SHERMAN | TX | 43,645 |
| SOUTH GRAYSON SUD | TX | 6,750 |
| BRYAN CO. RWS & SWMD #2 | OK | 6,270 |
| LUELLA SUD | TX | 4,200 |
Frequently asked questions about ZIP 75090 tap water
Is the tap water in ZIP 75090 safe to drink?
EPA testing detected 36 contaminants across the water suppliers serving ZIP 75090. 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 75090?
4 public water suppliers report EPA drinking-water monitoring for ZIP 75090. Each is listed above with its population served.
What contaminants are in ZIP 75090's water?
EPA monitoring detected Fluoride, Nitrate-Nitrite, Nitrate, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.