What was found in ZIP 77381
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 | 148.39999999999998 µg/L 11% of the EPA limit 1300 µg/L Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 278.29999999999984 µg/L — THE WOODLANDS MUD 1 · 7,989 people · 2019 | 5/5 | SYR4 |
| TTHM | 71.70499999999993 µg/L 90% of the EPA limit 80 µg/L Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 83.72499999999998 µg/L — MONTGOMERY COUNTY MUD 7 · 12,528 people · 2019 | 5/5 | SYR4 |
| Chloroform | 55.195 µg/L No EPA limit set Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 71.60499999999998 µg/L — MONTGOMERY COUNTY MUD 60 · 15,036 people · 2019 | 5/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 39.53999999999999 µg/L 66% of the EPA limit 60 µg/L Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 45.19 µg/L — THE WOODLANDS MUD 1 · 7,989 people · 2019 | 5/5 | SYR4 |
| Dichloroacetic Acid | 22.654999999999987 µg/L No EPA limit set Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 24.365 µg/L — THE WOODLANDS MUD 1 · 7,989 people · 2019 | 5/5 | SYR4 |
| Lithium | 19.9 µg/L No EPA limit set Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2024
Highest in the ZIP: 23.2 µg/L — MONTGOMERY COUNTY MUD 60 · 15,036 people · 2024 | 5/5 | UCMR-5 |
| Bromodichloromethane | 15.44 µg/L No EPA limit set Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 18.9 µg/L — MONTGOMERY COUNTY MUD 7 · 12,528 people · 2019 | 5/5 | SYR4 |
| Trichloroacetic Acid | 15.8 µg/L No EPA limit set Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 18.794999999999998 µg/L — THE WOODLANDS MUD 1 · 7,989 people · 2019 | 5/5 | SYR4 |
| Dibromochloromethane | 10.29 µg/L No EPA limit set Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 15.2 µg/L — MONTGOMERY COUNTY MUD 60 · 15,036 people · 2019 | 5/5 | SYR4 |
| Lead | 11.207999999999988 µg/L 75% of the EPA limit 15 µg/L Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 11.71599999999999 µg/L — THE WOODLANDS MUD 1 · 7,989 people · 2019 | 5/5 | SYR4 |
| Bromoform | 4.885 µg/L No EPA limit set Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 8.94 µg/L — THE WOODLANDS MUD 1 · 7,989 people · 2019 | 5/5 | SYR4 |
| Monochloroacetic Acid | 5.039999999999999 µg/L No EPA limit set Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019 | 4/5 | SYR4 |
| Dibromoacetic Acid | 3.169999999999999 µg/L No EPA limit set Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2019
Highest in the ZIP: 4.26 µg/L — MONTGOMERY COUNTY MUD 60 · 15,036 people · 2019 | 5/5 | SYR4 |
| Monobromoacetic Acid | 1.4 µg/L No EPA limit set Highest in the ZIP: MONTGOMERY COUNTY MUD 7 · 12,528 people · 2019 | 1/5 | SYR4 |
| Lead | 0.00070 mg/L 4.7% of the EPA limit 0.0150 mg/L Main supplier: MONTGOMERY COUNTY MUD 47 · 24,171 people · 2025
Highest in the ZIP: 0.0032 mg/L — MONTGOMERY COUNTY MUD 60 · 15,036 people · 2023 | 5/5 | 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 77381
| Supplier | State | Population served |
|---|---|---|
| MONTGOMERY COUNTY MUD 47 | TX | 24,171 |
| MONTGOMERY COUNTY MUD 67 | TX | 16,821 |
| MONTGOMERY COUNTY MUD 60 | TX | 15,036 |
| MONTGOMERY COUNTY MUD 7 | TX | 12,528 |
| THE WOODLANDS MUD 1 | TX | 7,989 |
Frequently asked questions about ZIP 77381 tap water
Is the tap water in ZIP 77381 safe to drink?
EPA testing detected 15 contaminants across the water suppliers serving ZIP 77381. 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 77381?
5 public water suppliers report EPA drinking-water monitoring for ZIP 77381. Each is listed above with its population served.
What contaminants are in ZIP 77381's water?
EPA monitoring detected Copper, TTHM, Chloroform, Total Haloacetic Acids (HAA5), Dichloroacetic Acid, and others across this ZIP's suppliers. The full list with levels and sources is above.