What was found in ZIP 77530
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 |
|---|---|---|---|
| Fluoride | 1070 µg/L 27% of the EPA limit 4000 µg/L | 4/5 | SYR4 |
| Nitrate | 890 µg/L 8.9% of the EPA limit 10000 µg/L | 5/5 | SYR4 |
| Nitrate-Nitrite | 620 µg/L 6.2% of the EPA limit 10000 µg/L | 3/5 | SYR4 |
| Copper | 350 µg/L 27% of the EPA limit 1300 µg/L | 5/5 | SYR4 |
| TTHM | 272 µg/L 340% of the EPA limit, in the worst sample — 80 µg/L | 5/5 | SYR4 |
| Chloroform | 199 µg/L No EPA limit set | 5/5 | SYR4 |
| Barium | 163 µg/L 8.2% of the EPA limit 2000 µg/L | 4/5 | SYR4 |
| Cyanide | 150 µg/L 75% of the EPA limit 200 µg/L | 3/5 | SYR4 |
| Total Haloacetic Acids (HAA5) | 108 µg/L 180% of the EPA limit, in the worst sample — 60 µg/L | 5/5 | SYR4 |
| Bromodichloromethane | 53.8 µg/L No EPA limit set | 5/5 | SYR4 |
| Dichloroacetic Acid | 51.3 µg/L No EPA limit set | 5/5 | SYR4 |
| Trichloroacetic Acid | 47.5 µg/L No EPA limit set | 4/5 | SYR4 |
| Nitrite | 20 µg/L 2% of the EPA limit 1000 µg/L | 2/5 | SYR4 |
| Lithium | 18.1 µg/L No EPA limit set | 4/5 | UCMR-5 |
| Dibromochloromethane | 16.9 µg/L No EPA limit set | 5/5 | SYR4 |
| Lead | 16 µg/L 107% of the EPA limit, in the worst sample — 15 µg/L | 5/5 | SYR4 |
| Arsenic | 10 µg/L 100% of the EPA limit 10 µg/L | 4/5 | SYR4 |
| Monochloroacetic Acid | 9.1 µg/L No EPA limit set | 4/5 | SYR4 |
| Bromoform | 6.6 µg/L No EPA limit set | 5/5 | SYR4 |
| Gross Beta Particle Activity | 5.5 pCi/L No EPA limit set | 1/5 | SYR4 |
| Dibromoacetic Acid | 3 µg/L No EPA limit set | 5/5 | SYR4 |
| Dalapon | 1.9 µg/L 1% of the EPA limit 200 µg/L | 1/5 | SYR4 |
| Combined Radium (-226 And -228) | 1.5 pCi/L 30% of the EPA limit 5 pCi/L | 3/5 | SYR4 |
| Atrazine | 0.8300 µg/L 28% of the EPA limit 3 µg/L | 3/5 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.7400 µg/L 12% of the EPA limit 6 µg/L | 1/5 | SYR4 |
| Benzo(A)Pyrene | 0.4000 µg/L 200% of the EPA limit, in the worst sample — 0.2000 µg/L | 1/5 | SYR4 |
| Simazine | 0.3400 µg/L 8.5% of the EPA limit 4 µg/L | 3/5 | SYR4 |
| Hexachlorocyclopentadiene | 0.1200 µg/L 0.2% of the EPA limit 50 µg/L | 1/5 | SYR4 |
| Pfba | 0.0082 µg/L No EPA limit set | 3/5 | UCMR-5 |
| Pfpea | 0.0078 µg/L No EPA limit set | 2/5 | UCMR-5 |
| Pfhxa | 0.0070 µg/L No EPA limit set | 4/5 | UCMR-5 |
| PFHXS | 0.0040 µg/L No EPA limit set | 1/5 | UCMR-5 |
| PFBS | 0.0038 µg/L No EPA limit set | 1/5 | UCMR-5 |
| Lead | 0.0029 mg/L 20% of the EPA limit 0.0150 mg/L | 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 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 77530
| Supplier | State | Population served |
|---|---|---|
| HARRIS COUNTY MUD 53 | TX | 17,856 |
| HARRIS COUNTY WCID 21 | TX | 13,845 |
| HARRIS COUNTY WCID 84 | TX | 6,552 |
| HARRIS COUNTY FWSD 47 | TX | 4,250 |
| HARRIS COUNTY FWSD 6 | TX | 2,229 |
Frequently asked questions about ZIP 77530 tap water
Is the tap water in ZIP 77530 safe to drink?
EPA testing detected 34 contaminants across the water suppliers serving ZIP 77530. 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 77530?
5 public water suppliers report EPA drinking-water monitoring for ZIP 77530. Each is listed above with its population served.
What contaminants are in ZIP 77530's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.