What was found in ZIP 36320
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 |
|---|---|---|---|
| Nitrate | 200 µg/L 2% of the EPA limit 10000 µg/L Main supplier: HOUSTON COUNTY WATER AUTHORITY · 4,902 people · 2019
Highest in the ZIP: 220 µg/L — COTTONWOOD WATER WORKS · 3,570 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 150 µg/L 1.5% of the EPA limit 10000 µg/L Main supplier: HOUSTON COUNTY WATER AUTHORITY · 4,902 people · 2019 | 1/2 | SYR4 |
| Barium | 95.05 µg/L 4.8% of the EPA limit 2000 µg/L Main supplier: HOUSTON COUNTY WATER AUTHORITY · 4,902 people · 2019 | 2/2 | SYR4 |
| TTHM | 13.975 µg/L 17% of the EPA limit 80 µg/L Main supplier: HOUSTON COUNTY WATER AUTHORITY · 4,902 people · 2019
Highest in the ZIP: 33.16 µg/L — COTTONWOOD WATER WORKS · 3,570 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 18.745 µg/L 31% of the EPA limit 60 µg/L Main supplier: HOUSTON COUNTY WATER AUTHORITY · 4,902 people · 2019 | 2/2 | SYR4 |
| Copper | 3.2 µg/L 0.2% of the EPA limit 1300 µg/L Main supplier: HOUSTON COUNTY WATER AUTHORITY · 4,902 people · 2019
Highest in the ZIP: 7.7 µg/L — COTTONWOOD WATER WORKS · 3,570 people · 2019 | 2/2 | SYR4 |
| Lead | 5 µg/L 33% of the EPA limit 15 µg/L Main supplier: HOUSTON COUNTY WATER AUTHORITY · 4,902 people · 2019 | 1/2 | SYR4 |
| Chloroform | 4.49 µg/L No EPA limit set Highest in the ZIP: COTTONWOOD WATER WORKS · 3,570 people · 2019 | 1/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2.85 pCi/L 19% of the EPA limit 15 pCi/L Main supplier: HOUSTON COUNTY WATER AUTHORITY · 4,902 people · 2019
Highest in the ZIP: 3.5455 pCi/L — COTTONWOOD WATER WORKS · 3,570 people · 2019 | 2/2 | SYR4 |
| Arsenic | 3.34 µg/L 33% of the EPA limit 10 µg/L Highest in the ZIP: COTTONWOOD WATER WORKS · 3,570 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 1.9965 µg/L No EPA limit set Highest in the ZIP: COTTONWOOD WATER WORKS · 3,570 people · 2019 | 1/2 | SYR4 |
| Dichloromethane | 1.4 µg/L 28% of the EPA limit 5 µg/L Highest in the ZIP: COTTONWOOD WATER WORKS · 3,570 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 1.1695 µg/L No EPA limit set Highest in the ZIP: COTTONWOOD WATER WORKS · 3,570 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0014 mg/L 9.3% of the EPA limit 0.0150 mg/L Main supplier: HOUSTON COUNTY WATER AUTHORITY · 4,902 people · 2023
Highest in the ZIP: 0.0017 mg/L — COTTONWOOD WATER WORKS · 3,570 people · 2023 | 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 36320
| Supplier | State | Population served |
|---|---|---|
| HOUSTON COUNTY WATER AUTHORITY | AL | 4,902 |
| COTTONWOOD WATER WORKS | AL | 3,570 |
Frequently asked questions about ZIP 36320 tap water
Is the tap water in ZIP 36320 safe to drink?
EPA testing detected 14 contaminants across the water suppliers serving ZIP 36320. 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 36320?
2 public water suppliers report EPA drinking-water monitoring for ZIP 36320. Each is listed above with its population served.
What contaminants are in ZIP 36320's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Barium, TTHM, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.