What was found in ZIP 77379
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 | 757 µg/L 19% of the EPA limit 4000 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 2740 µg/L — HARRIS COUNTY WCID 119 · 9,150 people · 2018 | 14/14 | SYR4 |
| Nitrate | 950 µg/L 9.5% of the EPA limit 10000 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 1780 µg/L — HARRIS COUNTY MUD 367 · 6,759 people · 2019 | 14/14 | SYR4 |
| Nitrate-Nitrite | 930 µg/L 9.3% of the EPA limit 10000 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2015
Highest in the ZIP: 1542 µg/L — HARRIS COUNTY WCID 119 · 9,150 people · 2015 | 14/14 | SYR4 |
| Copper | 163.9 µg/L 13% of the EPA limit 1300 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2017
Highest in the ZIP: 408.95 µg/L — HARRIS COUNTY WCID 114 · 5,160 people · 2019 | 14/14 | SYR4 |
| Nitrite | 395 µg/L 40% of the EPA limit 1000 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2015 | 11/14 | SYR4 |
| Barium | 277.25 µg/L 14% of the EPA limit 2000 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 296 µg/L — HARRIS COUNTY MUD 383 · 4,881 people · 2019 | 14/14 | SYR4 |
| Cyanide | 72.5 µg/L 36% of the EPA limit 200 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2017
Highest in the ZIP: 160 µg/L — HARRIS COUNTY MUD 383 · 4,881 people · 2017 | 10/14 | SYR4 |
| Lithium | 18.7 µg/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2024
Highest in the ZIP: 67.5 µg/L — HARRIS COUNTY WCID 119 · 9,150 people · 2023 | 9/14 | UCMR-5 |
| TTHM | 24.66 µg/L 31% of the EPA limit 80 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 47.25 µg/L — HARRIS COUNTY WCID 119 · 9,150 people · 2019 | 13/14 | SYR4 |
| Total Haloacetic Acids (HAA5) | 33.195 µg/L 55% of the EPA limit 60 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019 | 13/14 | SYR4 |
| Lead | 9.9575 µg/L 66% of the EPA limit 15 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2017
Highest in the ZIP: 30.12 µg/L — CYPRESS FOREST PUD · 3,912 people · 2019 | 14/14 | SYR4 |
| Xylenes, Total | 0.6000 µg/L 0% of the EPA limit 10000 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 29.65 µg/L — HARRIS COUNTY WCID 114 · 5,160 people · 2019 | 5/14 | SYR4 |
| Dibromochloromethane | 11.85 µg/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 29.6 µg/L — HARRIS COUNTY WCID 114 · 5,160 people · 2019 | 12/14 | SYR4 |
| Dichloroacetic Acid | 28 µg/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2019 | 12/14 | SYR4 |
| Bromoform | 2.91 µg/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 27.93 µg/L — HARRIS COUNTY WCID 119 · 9,150 people · 2019 | 10/14 | SYR4 |
| Chloroform | 21.5 µg/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 22.2 µg/L — CYPRESS FOREST PUD · 3,912 people · 2019 | 13/14 | SYR4 |
| Arsenic | 4.5 µg/L 45% of the EPA limit 10 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 14.06 µg/L — HARRIS COUNTY WCID 114 · 5,160 people · 2019 | 8/14 | SYR4 |
| Bromodichloromethane | 4.94 µg/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 9.69 µg/L — HARRIS COUNTY WCID 119 · 9,150 people · 2019 | 13/14 | SYR4 |
| Monochloroacetic Acid | 4.075 µg/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 9.4 µg/L — CYPRESSWOOD UTILITY DISTRICT · 4,305 people · 2019 | 11/14 | SYR4 |
| Dibromoacetic Acid | 3.9 µg/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 7.52 µg/L — HARRIS COUNTY WCID 119 · 9,150 people · 2019 | 8/14 | SYR4 |
| Selenium | 6.9 µg/L 14% of the EPA limit 50 µg/L Highest in the ZIP: BILMA PUD · 5,397 people · 2017 | 4/14 | SYR4 |
| Gross Beta Particle Activity | 4.2 pCi/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 5.045 pCi/L — CYPRESS FOREST PUD · 3,912 people · 2019 | 6/14 | SYR4 |
| Trichloroacetic Acid | 4.7 µg/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2019 | 11/14 | SYR4 |
| Combined Radium (-226 And -228) | 4.195 pCi/L 84% of the EPA limit 5 pCi/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019 | 11/14 | SYR4 |
| Gross Alpha, Excl. Radon And U | 2 pCi/L 13% of the EPA limit 15 pCi/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 3.5 pCi/L — HARRIS COUNTY MUD 383 · 4,881 people · 2018 | 3/14 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 2.9 µg/L 48% of the EPA limit 6 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 3 µg/L — HARRIS COUNTY WCID 119 · 9,150 people · 2019 | 6/14 | SYR4 |
| Ethylbenzene | 2.895 µg/L 0.4% of the EPA limit 700 µg/L Highest in the ZIP: HARRIS COUNTY WCID 114 · 5,160 people · 2019 | 2/14 | SYR4 |
| Toluene | 2.56 µg/L 0.3% of the EPA limit 1000 µg/L Highest in the ZIP: HARRIS COUNTY MUD 24 · 14,796 people · 2019 | 1/14 | SYR4 |
| Atrazine | 0.6380 µg/L 21% of the EPA limit 3 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 2.3445 µg/L — CYPRESSWOOD UTILITY DISTRICT · 4,305 people · 2019 | 9/14 | SYR4 |
| Monobromoacetic Acid | 1.5 µg/L No EPA limit set Highest in the ZIP: HARRIS COUNTY WCID 119 · 9,150 people · 2019 | 1/14 | SYR4 |
| Combined Uranium | 1.495 µg/L 5% of the EPA limit 30 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019 | 1/14 | SYR4 |
| Pentachlorophenol | 0.5700 µg/L 57% of the EPA limit 1 µg/L Highest in the ZIP: HARRIS COUNTY WCID 114 · 5,160 people · 2017 | 1/14 | SYR4 |
| 2,4-D | 0.4000 µg/L 0.6% of the EPA limit 70 µg/L Highest in the ZIP: HARRIS COUNTY WCID 114 · 5,160 people · 2017 | 2/14 | SYR4 |
| Simazine | 0.1900 µg/L 4.8% of the EPA limit 4 µg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2019
Highest in the ZIP: 0.2400 µg/L — HARRIS COUNTY MUD 367 · 6,759 people · 2019 | 9/14 | SYR4 |
| Pfpea | 0.0030 µg/L No EPA limit set Main supplier: BRIDGESTONE MUD · 24,528 people · 2024
Highest in the ZIP: 0.0126 µg/L — HARRIS COUNTY WCID 119 · 9,150 people · 2023 | 10/14 | UCMR-5 |
| Pfba | 0.0091 µg/L No EPA limit set Highest in the ZIP: CYPRESSWOOD UTILITY DISTRICT · 4,305 people · 2025 | 9/14 | UCMR-5 |
| Pfhxa | 0.0087 µg/L No EPA limit set Highest in the ZIP: HARRIS COUNTY WCID 119 · 9,150 people · 2023 | 9/14 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: BRIDGESTONE MUD · 24,528 people · 2023
Highest in the ZIP: 0.0054 mg/L — BILMA PUD · 5,397 people · 2025 | 14/14 | LCR |
| PFBS | 0.0043 µg/L No EPA limit set Highest in the ZIP: HARRIS COUNTY WCID 119 · 9,150 people · 2023 | 2/14 | 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 77379
| Supplier | State | Population served |
|---|---|---|
| BRIDGESTONE MUD | TX | 24,528 |
| HARRIS COUNTY MUD 24 | TX | 14,796 |
| MEADOWHILL REGIONAL MUD | TX | 13,863 |
| HARRIS COUNTY WCID 119 | TX | 9,150 |
| HARRIS COUNTY MUD 367 | TX | 6,759 |
| BILMA PUD | TX | 5,397 |
| HARRIS COUNTY WCID 114 | TX | 5,160 |
| NORTHWEST HARRIS COUNTY MUD 32 | TX | 5,016 |
| HARRIS COUNTY MUD 383 | TX | 4,881 |
| LOUETTA NORTH PUD | TX | 4,848 |
| CYPRESSWOOD UTILITY DISTRICT | TX | 4,305 |
| CYPRESS KLEIN UTILITY DISTRICT WIMBLETON | TX | 3,960 |
| CYPRESS FOREST PUD | TX | 3,912 |
| SUGARBERRY PLACE | UT | 864 |
Frequently asked questions about ZIP 77379 tap water
Is the tap water in ZIP 77379 safe to drink?
EPA testing detected 39 contaminants across the water suppliers serving ZIP 77379. 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 77379?
14 public water suppliers report EPA drinking-water monitoring for ZIP 77379. Each is listed above with its population served.
What contaminants are in ZIP 77379'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.