What was found in ZIP 77068
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 | 550 µg/L 5.5% of the EPA limit 10000 µg/L Highest in the ZIP: NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 2/4 | SYR4 |
| Nitrate-Nitrite | 536.5 µg/L 5.4% of the EPA limit 10000 µg/L Highest in the ZIP: NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2015 | 2/4 | SYR4 |
| Copper | 95.28499999999988 µg/L 7.3% of the EPA limit 1300 µg/L Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2018
Highest in the ZIP: 477 µg/L — NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2018 | 4/4 | SYR4 |
| Fluoride | 445 µg/L 11% of the EPA limit 4000 µg/L Highest in the ZIP: NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2017 | 2/4 | SYR4 |
| Barium | 261.3499999999999 µg/L 13% of the EPA limit 2000 µg/L Highest in the ZIP: CYPRESS FOREST PUD · 3,912 people · 2017 | 2/4 | SYR4 |
| Cyanide | 115 µg/L 57% of the EPA limit 200 µg/L Highest in the ZIP: CYPRESS FOREST PUD · 3,912 people · 2017 | 1/4 | SYR4 |
| TTHM | 17.3 µg/L 22% of the EPA limit 80 µg/L Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2019
Highest in the ZIP: 50.989999999999974 µg/L — NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 4/4 | SYR4 |
| Nitrite | 35 µg/L 3.5% of the EPA limit 1000 µg/L Highest in the ZIP: CYPRESS FOREST PUD · 3,912 people · 2015 | 2/4 | SYR4 |
| Chloroform | 14.3 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2019
Highest in the ZIP: 33.269999999999996 µg/L — NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 4/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 32.195 µg/L 54% of the EPA limit 60 µg/L Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2019 | 4/4 | SYR4 |
| Lead | 6.695499999999999 µg/L 45% of the EPA limit 15 µg/L Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2018
Highest in the ZIP: 30.12 µg/L — CYPRESS FOREST PUD · 3,912 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 27.924999999999994 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2019 | 4/4 | SYR4 |
| Bromodichloromethane | 3.23 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2019
Highest in the ZIP: 21.6 µg/L — NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 1 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2019
Highest in the ZIP: 13.084999999999997 µg/L — NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 4/4 | SYR4 |
| Arsenic | 7.2 µg/L 72% of the EPA limit 10 µg/L Highest in the ZIP: CYPRESS FOREST PUD · 3,912 people · 2017 | 1/4 | SYR4 |
| Trichloroacetic Acid | 4.1 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2019
Highest in the ZIP: 5.554999999999999 µg/L — NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 4/4 | SYR4 |
| Gross Beta Particle Activity | 5.045 pCi/L No EPA limit set Highest in the ZIP: CYPRESS FOREST PUD · 3,912 people · 2019 | 1/4 | SYR4 |
| Monochloroacetic Acid | 3.595 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2019
Highest in the ZIP: 3.9 µg/L — NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 4/4 | SYR4 |
| Dibromoacetic Acid | 3.6 µg/L No EPA limit set Highest in the ZIP: NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 1/4 | SYR4 |
| Bromoform | 3.1500000000000004 µg/L No EPA limit set Highest in the ZIP: NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 2/4 | SYR4 |
| Xylenes, Total | 2.4 µg/L 0% of the EPA limit 10000 µg/L Highest in the ZIP: NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 1/4 | SYR4 |
| Combined Radium (-226 And -228) | 1 pCi/L 20% of the EPA limit 5 pCi/L Highest in the ZIP: CYPRESS FOREST PUD · 3,912 people · 2013 | 1/4 | SYR4 |
| Atrazine | 0.8875 µg/L 30% of the EPA limit 3 µg/L Highest in the ZIP: CYPRESS FOREST PUD · 3,912 people · 2019 | 2/4 | SYR4 |
| Ethylbenzene | 0.5000 µg/L 0.1% of the EPA limit 700 µg/L Highest in the ZIP: NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2019 | 1/4 | SYR4 |
| Simazine | 0.1280 µg/L 3.2% of the EPA limit 4 µg/L Highest in the ZIP: CYPRESS FOREST PUD · 3,912 people · 2019 | 1/4 | SYR4 |
| Pfba | 0.0070 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2025
Highest in the ZIP: 0.0114 µg/L — NORTHWEST HARRIS COUNTY MUD 20 · 3,429 people · 2024 | 4/4 | UCMR-5 |
| Pfpea | 0.0051 µg/L No EPA limit set Highest in the ZIP: CYPRESS FOREST PUD · 3,912 people · 2025 | 2/4 | UCMR-5 |
| Pfhxa | 0.0042 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2025 | 3/4 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: HARRIS COUNTY MUD 16 · 5,982 people · 2024
Highest in the ZIP: 0.0026 mg/L — CYPRESS FOREST PUD · 3,912 people · 2024 | 4/4 | 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 77068
| Supplier | State | Population served |
|---|---|---|
| HARRIS COUNTY MUD 16 | TX | 5,982 |
| FOUNTAINHEAD MUD | TX | 4,614 |
| CYPRESS FOREST PUD | TX | 3,912 |
| NORTHWEST HARRIS COUNTY MUD 20 | TX | 3,429 |
Frequently asked questions about ZIP 77068 tap water
Is the tap water in ZIP 77068 safe to drink?
EPA testing detected 29 contaminants across the water suppliers serving ZIP 77068. 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 77068?
4 public water suppliers report EPA drinking-water monitoring for ZIP 77068. Each is listed above with its population served.
What contaminants are in ZIP 77068's water?
EPA monitoring detected Nitrate, Nitrate-Nitrite, Copper, Fluoride, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.