What was found in ZIP 78336
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 |
|---|---|---|---|
| Copper | 263 µg/L 20% of the EPA limit 1300 µg/L Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019
Highest in the ZIP: 362 µg/L — RINCON WSC · 5,034 people · 2019 | 3/3 | SYR4 |
| TTHM | 77.18 µg/L 96% of the EPA limit 80 µg/L Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019 | 3/3 | SYR4 |
| Lithium | 26 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2024
Highest in the ZIP: 53.8 µg/L — CITY OF ARANSAS PASS · 8,088 people · 2025 | 3/3 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 43.67 µg/L 73% of the EPA limit 60 µg/L Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019 | 3/3 | SYR4 |
| Bromoform | 20.96 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019
Highest in the ZIP: 34.9 µg/L — RINCON WSC · 5,034 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 24.95 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 24.39 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 22.39 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 17.81 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019
Highest in the ZIP: 18.975 µg/L — CITY OF ARANSAS PASS · 8,088 people · 2019 | 3/3 | SYR4 |
| Chloroform | 17.45 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019 | 3/3 | SYR4 |
| Lead | 15.9 µg/L 106% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019 | 3/3 | SYR4 |
| Monobromoacetic Acid | 11.375 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 10 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 9.515 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2019 | 3/3 | SYR4 |
| Pfba | 0.0120 µg/L No EPA limit set Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2024
Highest in the ZIP: 0.0130 µg/L — RINCON WSC · 5,034 people · 2024 | 3/3 | UCMR-5 |
| Pfpea | 0.0052 µg/L No EPA limit set Highest in the ZIP: CITY OF ARANSAS PASS · 8,088 people · 2025 | 2/3 | UCMR-5 |
| Lead | 0.0034 mg/L 23% of the EPA limit 0.0150 mg/L Main supplier: NUECES COUNTY WCID 4 · 14,880 people · 2023 | 3/3 | LCR |
| Pfhxa | 0.0034 µg/L No EPA limit set Highest in the ZIP: CITY OF ARANSAS PASS · 8,088 people · 2025 | 1/3 | 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 78336
| Supplier | State | Population served |
|---|---|---|
| NUECES COUNTY WCID 4 | TX | 14,880 |
| CITY OF ARANSAS PASS | TX | 8,088 |
| RINCON WSC | TX | 5,034 |
Frequently asked questions about ZIP 78336 tap water
Is the tap water in ZIP 78336 safe to drink?
EPA testing detected 18 contaminants across the water suppliers serving ZIP 78336. 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 78336?
3 public water suppliers report EPA drinking-water monitoring for ZIP 78336. Each is listed above with its population served.
What contaminants are in ZIP 78336's water?
EPA monitoring detected Copper, TTHM, Lithium, Total Haloacetic Acids (HAA5), Bromoform, and others across this ZIP's suppliers. The full list with levels and sources is above.