What was found in ZIP 77406
The highest level seen across the suppliers serving this ZIP, the EPA limit for each, and where the figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Copper | 1730 µg/L 133% of the EPA limit, in the worst sample — 1300 µg/L | 7/8 | SYR4 |
| Nitrate | 1640 µg/L 16% of the EPA limit 10000 µg/L | 8/8 | SYR4 |
| Nitrate-Nitrite | 1330 µg/L 13% of the EPA limit 10000 µg/L | 8/8 | SYR4 |
| Fluoride | 820 µg/L 21% of the EPA limit 4000 µg/L | 8/8 | SYR4 |
| Chlorite | 801 µg/L 80% of the EPA limit 1000 µg/L | 1/8 | SYR4 |
| Barium | 220 µg/L 11% of the EPA limit 2000 µg/L | 8/8 | SYR4 |
| Cyanide | 180 µg/L 90% of the EPA limit 200 µg/L | 5/8 | SYR4 |
| Nitrite | 180 µg/L 18% of the EPA limit 1000 µg/L | 1/8 | SYR4 |
| TTHM | 138 µg/L 173% of the EPA limit, in the worst sample — 80 µg/L | 7/8 | SYR4 |
| Total Haloacetic Acids (HAA5) | 88.8 µg/L 148% of the EPA limit, in the worst sample — 60 µg/L | 7/8 | SYR4 |
| Chloroform | 68.1 µg/L No EPA limit set | 7/8 | SYR4 |
| Dichloroacetic Acid | 62.9 µg/L No EPA limit set | 7/8 | SYR4 |
| Bromodichloromethane | 45.8 µg/L No EPA limit set | 7/8 | SYR4 |
| Dibromochloromethane | 29.7 µg/L No EPA limit set | 7/8 | SYR4 |
| Lithium | 24.1 µg/L No EPA limit set | 8/8 | UCMR-5 |
| Trichloroacetic Acid | 23.7 µg/L No EPA limit set | 7/8 | SYR4 |
| Lead | 21.7 µg/L 145% of the EPA limit, in the worst sample — 15 µg/L | 7/8 | SYR4 |
| Bromoform | 12 µg/L No EPA limit set | 7/8 | SYR4 |
| Monochloroacetic Acid | 10.1 µg/L No EPA limit set | 7/8 | SYR4 |
| Dibromoacetic Acid | 9 µg/L No EPA limit set | 7/8 | SYR4 |
| Gross Beta Particle Activity | 8.4 pCi/L No EPA limit set | 6/8 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.4 pCi/L 49% of the EPA limit 15 pCi/L | 5/8 | SYR4 |
| Xylenes, Total | 5.6 µg/L 0.1% of the EPA limit 10000 µg/L | 1/8 | SYR4 |
| Selenium | 5.3 µg/L 11% of the EPA limit 50 µg/L | 2/8 | SYR4 |
| Combined Radium (-226 And -228) | 3.9 pCi/L 78% of the EPA limit 5 pCi/L | 7/8 | SYR4 |
| Simazine | 3.9 µg/L 98% of the EPA limit 4 µg/L | 6/8 | SYR4 |
| Arsenic | 3 µg/L 30% of the EPA limit 10 µg/L | 4/8 | SYR4 |
| Combined Uranium | 2.3 µg/L 7.7% of the EPA limit 30 µg/L | 5/8 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.7 µg/L 28% of the EPA limit 6 µg/L | 3/8 | SYR4 |
| Atrazine | 0.7200 µg/L 24% of the EPA limit 3 µg/L | 6/8 | SYR4 |
| Ethylbenzene | 0.7000 µg/L 0.1% of the EPA limit 700 µg/L | 1/8 | SYR4 |
| Pfpea | 0.0923 µg/L No EPA limit set | 6/8 | UCMR-5 |
| Pfba | 0.0229 µg/L No EPA limit set | 6/8 | UCMR-5 |
| Pfhxa | 0.0091 µg/L No EPA limit set | 5/8 | UCMR-5 |
| 6:2 Fts | 0.0079 µg/L No EPA limit set | 2/8 | UCMR-5 |
| PFOS | 0.0046 µg/L No EPA limit set | 2/8 | UCMR-5 |
| PFBS | 0.0045 µg/L No EPA limit set | 4/8 | UCMR-5 |
| PFHXS | 0.0039 µg/L No EPA limit set | 4/8 | UCMR-5 |
| Lead | 0.0025 mg/L 17% of the EPA limit 0.0150 mg/L | 8/8 | 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 single worst sample on
record — over 100% is worth reading, but is not by itself a violation.
Formal violations are listed separately.
Water suppliers serving ZIP 77406
| Supplier | State | Population served |
|---|---|---|
| PECAN GROVE MUD | TX | 14,913 |
| FORT BEND COUNTY MUD 142 | TX | 11,595 |
| FORT BEND COUNTY MUD 133 | TX | 7,362 |
| FORT BEND COUNTY MUD 143 WATER VIEW ESTA | TX | 7,245 |
| FORT BEND COUNTY MUD 50 | TX | 6,234 |
| FORT BEND COUNTY MUD 146 | TX | 5,985 |
| FORT BEND COUNTY MUD 118 | TX | 5,346 |
| TDCJ JESTER UNIT 3 | TX | 3,365 |
Frequently asked questions about ZIP 77406 tap water
Is the tap water in ZIP 77406 safe to drink?
EPA testing detected 39 contaminants across the water suppliers serving ZIP 77406. 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 77406?
8 public water suppliers report EPA drinking-water monitoring for ZIP 77406. Each is listed above with its population served.
What contaminants are in ZIP 77406's water?
EPA monitoring detected Copper, Nitrate, Nitrate-Nitrite, Fluoride, Chlorite, and others across this ZIP's suppliers. The full list with levels and sources is above.