What was found in ZIP 75423
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 | 1908 µg/L 48% of the EPA limit 4000 µg/L Highest in the ZIP: HICKORY CREEK SUD · 5,373 people · 2018 | 1/3 | SYR4 |
| Copper | 981.5 µg/L 76% of the EPA limit 1300 µg/L Main supplier: CADDO BASIN SUD · 14,574 people · 2019 | 3/3 | SYR4 |
| Nitrate-Nitrite | 140 µg/L 1.4% of the EPA limit 10000 µg/L Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/3 | SYR4 |
| TTHM | 55.96 µg/L 70% of the EPA limit 80 µg/L Main supplier: CADDO BASIN SUD · 14,574 people · 2019
Highest in the ZIP: 122.275 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Nitrate | 97.5 µg/L 1% of the EPA limit 10000 µg/L Highest in the ZIP: HICKORY CREEK SUD · 5,373 people · 2019 | 1/3 | SYR4 |
| Chloroform | 19.41 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2019
Highest in the ZIP: 94.645 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 2/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 38.1 µg/L 64% of the EPA limit 60 µg/L Main supplier: CADDO BASIN SUD · 14,574 people · 2019
Highest in the ZIP: 62.71 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Barium | 50.8 µg/L 2.5% of the EPA limit 2000 µg/L Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2013 | 2/3 | SYR4 |
| Lithium | 45.7 µg/L No EPA limit set Highest in the ZIP: HICKORY CREEK SUD · 5,373 people · 2024 | 1/3 | UCMR-5 |
| Trichloroacetic Acid | 7.565 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2019
Highest in the ZIP: 36.03 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 19.955 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2019
Highest in the ZIP: 30.355 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 20.85 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2019
Highest in the ZIP: 24.055 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 3/3 | SYR4 |
| Chromium | 23.55 µg/L 24% of the EPA limit 100 µg/L Highest in the ZIP: HICKORY CREEK SUD · 5,373 people · 2018 | 1/3 | SYR4 |
| Bromoform | 6.685 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2019
Highest in the ZIP: 18.69 µg/L — HICKORY CREEK SUD · 5,373 people · 2019 | 3/3 | SYR4 |
| Lead | 3.518 µg/L 23% of the EPA limit 15 µg/L Main supplier: CADDO BASIN SUD · 14,574 people · 2019
Highest in the ZIP: 18.392 µg/L — BRYAN CO. RWS & SWMD #2 · 6,270 people · 2018 | 3/3 | SYR4 |
| Dibromochloromethane | 17.055 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 14.23 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 8.89 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2019
Highest in the ZIP: 12.7 µg/L — HICKORY CREEK SUD · 5,373 people · 2019 | 3/3 | SYR4 |
| Selenium | 10.68 µg/L 21% of the EPA limit 50 µg/L Highest in the ZIP: HICKORY CREEK SUD · 5,373 people · 2018 | 1/3 | SYR4 |
| Monobromoacetic Acid | 2.725 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2019
Highest in the ZIP: 5.1 µg/L — HICKORY CREEK SUD · 5,373 people · 2019 | 3/3 | SYR4 |
| Arsenic | 2.44 µg/L 24% of the EPA limit 10 µg/L Highest in the ZIP: HICKORY CREEK SUD · 5,373 people · 2018 | 1/3 | SYR4 |
| Gross Beta Particle Activity | 2.054 pCi/L No EPA limit set Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 1.095 pCi/L 22% of the EPA limit 5 pCi/L Highest in the ZIP: BRYAN CO. RWS & SWMD #2 · 6,270 people · 2019 | 1/3 | 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 | 1/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.5968 µg/L 9.9% of the EPA limit 6 µg/L Highest in the ZIP: HICKORY CREEK SUD · 5,373 people · 2019 | 1/3 | SYR4 |
| Pfba | 0.0129 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2024 | 1/3 | UCMR-5 |
| Pfpea | 0.0082 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2024 | 1/3 | UCMR-5 |
| Pfhxa | 0.0075 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2024 | 1/3 | UCMR-5 |
| PFBS | 0.0039 µg/L No EPA limit set Main supplier: CADDO BASIN SUD · 14,574 people · 2024 | 1/3 | UCMR-5 |
| Lead | 0.0013 mg/L 8.9% of the EPA limit 0.0150 mg/L Main supplier: CADDO BASIN SUD · 14,574 people · 2025 | 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.
Water suppliers serving ZIP 75423
| Supplier | State | Population served |
|---|---|---|
| CADDO BASIN SUD | TX | 14,574 |
| BRYAN CO. RWS & SWMD #2 | OK | 6,270 |
| HICKORY CREEK SUD | TX | 5,373 |
Frequently asked questions about ZIP 75423 tap water
Is the tap water in ZIP 75423 safe to drink?
EPA testing detected 30 contaminants across the water suppliers serving ZIP 75423. 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 75423?
3 public water suppliers report EPA drinking-water monitoring for ZIP 75423. Each is listed above with its population served.
What contaminants are in ZIP 75423's water?
EPA monitoring detected Fluoride, Copper, Nitrate-Nitrite, TTHM, Nitrate, and others across this ZIP's suppliers. The full list with levels and sources is above.