What was found in ZIP 77449
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 | 1003.9999999999999 µg/L 25% of the EPA limit 4000 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 1538.9999999999998 µg/L — HARRIS COUNTY MUD 167 · 16,761 people · 2018 | 18/19 | SYR4 |
| Nitrate | 220 µg/L 2.2% of the EPA limit 10000 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 1130 µg/L — CLAY ROAD MUD · 4,443 people · 2019 | 18/19 | SYR4 |
| Nitrate-Nitrite | 220 µg/L 2.2% of the EPA limit 10000 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2018
Highest in the ZIP: 1086 µg/L — CLAY ROAD MUD · 4,443 people · 2015 | 15/19 | SYR4 |
| Copper | 213.99999999999977 µg/L 16% of the EPA limit 1300 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 607 µg/L — HARRIS COUNTY MUD 105 · 14,925 people · 2018 | 18/19 | SYR4 |
| Nitrite | 290 µg/L 29% of the EPA limit 1000 µg/L Highest in the ZIP: HARRIS COUNTY MUD 239 · 5,583 people · 2015 | 3/19 | SYR4 |
| Barium | 237.4 µg/L 12% of the EPA limit 2000 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 245.5 µg/L — HARRIS COUNTY MUD 61 · 2,016 people · 2018 | 18/19 | SYR4 |
| Cyanide | 184 µg/L 92% of the EPA limit 200 µg/L Highest in the ZIP: LANGHAM CREEK UTILITY DISTRICT · 10,377 people · 2017 | 4/19 | SYR4 |
| Lithium | 28.4 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2025
Highest in the ZIP: 50.2 µg/L — HARRIS COUNTY MUD 71 · 17,079 people · 2024 | 18/19 | UCMR-5 |
| TTHM | 7.16 µg/L 9% of the EPA limit 80 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 46.794999999999995 µg/L — CLAY ROAD MUD · 4,443 people · 2019 | 17/19 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.2 µg/L 2% of the EPA limit 60 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 41.279999999999994 µg/L — LANGHAM CREEK UTILITY DISTRICT · 10,377 people · 2019 | 14/19 | SYR4 |
| Dichloroacetic Acid | 29.894999999999996 µg/L No EPA limit set Highest in the ZIP: LANGHAM CREEK UTILITY DISTRICT · 10,377 people · 2019 | 7/19 | SYR4 |
| Chloroform | 25.49999999999999 µg/L No EPA limit set Highest in the ZIP: LANGHAM CREEK UTILITY DISTRICT · 10,377 people · 2019 | 10/19 | SYR4 |
| Lead | 2.929999999999999 µg/L 20% of the EPA limit 15 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 24.634999999999994 µg/L — MAYDE CREEK MUD · 5,301 people · 2019 | 18/19 | SYR4 |
| Bromodichloromethane | 1.52 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 22.609999999999985 µg/L — HARRIS COUNTY MUD 239 · 5,583 people · 2019 | 12/19 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.744999999999999 pCi/L 32% of the EPA limit 15 pCi/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 18.549999999999997 pCi/L — FRY ROAD MUD · 3,711 people · 2017 | 13/19 | SYR4 |
| Xylenes, Total | 15.6 µg/L 0.2% of the EPA limit 10000 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019 | 6/19 | SYR4 |
| Dibromochloromethane | 2.779999999999999 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 13.85 µg/L — HARRIS COUNTY MUD 239 · 5,583 people · 2019 | 16/19 | SYR4 |
| Bromoform | 2.6199999999999997 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 13.119999999999997 µg/L — WEST HARRIS COUNTY MUD 2 CHASE · 6,921 people · 2019 | 13/19 | SYR4 |
| Arsenic | 9.36 µg/L 94% of the EPA limit 10 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 12.219999999999999 µg/L — HARRIS COUNTY MUD 157 · 13,062 people · 2018 | 14/19 | SYR4 |
| Trichloroacetic Acid | 10.059999999999999 µg/L No EPA limit set Highest in the ZIP: RICEWOOD MUD · 4,908 people · 2019 | 7/19 | SYR4 |
| Gross Beta Particle Activity | 5.08 pCi/L No EPA limit set Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 9.655000000000001 pCi/L — HARRIS COUNTY MUD 61 · 2,016 people · 2018 | 10/19 | SYR4 |
| Combined Uranium | 9.35 µg/L 31% of the EPA limit 30 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019 | 10/19 | SYR4 |
| Selenium | 4.8 µg/L 9.6% of the EPA limit 50 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 8.7 µg/L — HARRIS COUNTY MUD 157 · 13,062 people · 2018 | 8/19 | SYR4 |
| Combined Radium (-226 And -228) | 1.1 pCi/L 22% of the EPA limit 5 pCi/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 5.759999999999999 pCi/L — FRY ROAD MUD · 3,711 people · 2017 | 13/19 | SYR4 |
| Dibromoacetic Acid | 1.2 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 5.679999999999999 µg/L — HARRIS COUNTY MUD 239 · 5,583 people · 2019 | 11/19 | SYR4 |
| Monochloroacetic Acid | 5.625 µg/L No EPA limit set Highest in the ZIP: LANGHAM CREEK UTILITY DISTRICT · 10,377 people · 2019 | 8/19 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.6300 µg/L 11% of the EPA limit 6 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019
Highest in the ZIP: 5.4 µg/L — CLAY ROAD MUD · 4,443 people · 2019 | 3/19 | SYR4 |
| Toluene | 4.0249999999999995 µg/L 0.4% of the EPA limit 1000 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019 | 2/19 | SYR4 |
| Ethylbenzene | 1.77 µg/L 0.3% of the EPA limit 700 µg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2019 | 4/19 | SYR4 |
| Monobromoacetic Acid | 1.285 µg/L No EPA limit set Highest in the ZIP: CLAY ROAD MUD · 4,443 people · 2019 | 2/19 | SYR4 |
| Carbon Tetrachloride | 0.9000 µg/L 18% of the EPA limit 5 µg/L Highest in the ZIP: HARRIS COUNTY MUD 167 · 16,761 people · 2019 | 1/19 | SYR4 |
| Atrazine | 0.3795 µg/L 13% of the EPA limit 3 µg/L Highest in the ZIP: HARRIS COUNTY MUD 127 · 5,247 people · 2019 | 5/19 | SYR4 |
| Simazine | 0.1780 µg/L 4.5% of the EPA limit 4 µg/L Highest in the ZIP: HARRIS COUNTY MUD 127 · 5,247 people · 2019 | 5/19 | SYR4 |
| Hexachlorocyclopentadiene | 0.1295 µg/L 0.3% of the EPA limit 50 µg/L Highest in the ZIP: LANGHAM CREEK UTILITY DISTRICT · 10,377 people · 2019 | 1/19 | SYR4 |
| Pfhxa | 0.0041 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2025
Highest in the ZIP: 0.0099 µg/L — HARRIS COUNTY MUD 157 · 13,062 people · 2023 | 7/19 | UCMR-5 |
| Lead | 0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2025
Highest in the ZIP: 0.0095 mg/L — HARRIS COUNTY MUD 71 · 17,079 people · 2025 | 19/19 | LCR |
| Pfba | 0.0091 µg/L No EPA limit set Highest in the ZIP: LANGHAM CREEK UTILITY DISTRICT · 10,377 people · 2024 | 6/19 | UCMR-5 |
| Pfpea | 0.0047 µg/L No EPA limit set Main supplier: HARRIS COUNTY MUD 165 · 40,503 people · 2025
Highest in the ZIP: 0.0082 µg/L — HARRIS COUNTY MUD 157 · 13,062 people · 2023 | 8/19 | UCMR-5 |
| PFBS | 0.0043 µg/L No EPA limit set Highest in the ZIP: HARRIS COUNTY MUD 157 · 13,062 people · 2023 | 2/19 | UCMR-5 |
| PFHXS | 0.0037 µg/L No EPA limit set Highest in the ZIP: HARRIS COUNTY MUD 157 · 13,062 people · 2023 | 2/19 | 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 77449
| Supplier | State | Population served |
|---|---|---|
| HARRIS COUNTY MUD 165 | TX | 40,503 |
| HARRIS COUNTY MUD 71 | TX | 17,079 |
| HARRIS COUNTY MUD 167 | TX | 16,761 |
| HARRIS COUNTY MUD 105 | TX | 14,925 |
| HARRIS COUNTY MUD 157 | TX | 13,062 |
| LANGHAM CREEK UTILITY DISTRICT | TX | 10,377 |
| NORTHWEST HARRIS COUNTY MUD 12 | TX | 7,764 |
| WESTON MUD | TX | 7,647 |
| WEST HARRIS COUNTY MUD 2 CHASE | TX | 6,921 |
| HARRIS COUNTY MUD 239 | TX | 5,583 |
| MAYDE CREEK MUD | TX | 5,301 |
| WEST HARRIS COUNTY MUD 7 | TX | 5,289 |
| HARRIS COUNTY MUD 127 | TX | 5,247 |
| RICEWOOD MUD | TX | 4,908 |
| CLAY ROAD MUD | TX | 4,443 |
| FRY ROAD MUD | TX | 3,711 |
| HARRIS COUNTY MUD 287 | TX | 3,510 |
| HARRIS COUNTY MUD 61 | TX | 2,016 |
| WESTERN PINES MHP | UT | 1,170 |
Frequently asked questions about ZIP 77449 tap water
Is the tap water in ZIP 77449 safe to drink?
EPA testing detected 40 contaminants across the water suppliers serving ZIP 77449. 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 77449?
19 public water suppliers report EPA drinking-water monitoring for ZIP 77449. Each is listed above with its population served.
What contaminants are in ZIP 77449's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, Nitrite, and others across this ZIP's suppliers. The full list with levels and sources is above.