What was found in ZIP 77584
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 | 1534 µg/L 38% of the EPA limit 4000 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2018 | 2/4 | SYR4 |
| Nitrate | 1020 µg/L 10% of the EPA limit 10000 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 2/4 | SYR4 |
| Nitrate-Nitrite | 957.5 µg/L 9.6% of the EPA limit 10000 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 2/4 | SYR4 |
| Copper | 656.4 µg/L 50% of the EPA limit 1300 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 4/4 | SYR4 |
| Barium | 227.85 µg/L 11% of the EPA limit 2000 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2018 | 2/4 | SYR4 |
| Nitrite | 67.5 µg/L 6.8% of the EPA limit 1000 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 1/4 | SYR4 |
| Total Haloacetic Acids (HAA5) | 49.05 µg/L 82% of the EPA limit 60 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 3/4 | SYR4 |
| TTHM | 43.9 µg/L 55% of the EPA limit 80 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 4/4 | SYR4 |
| Dichloroacetic Acid | 33 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 3/4 | SYR4 |
| Monochloroacetic Acid | 31.42 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 2/4 | SYR4 |
| Chloroform | 31.1 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 3/4 | SYR4 |
| Lithium | 19.7 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2025
Highest in the ZIP: 26.5 µg/L — BRAZORIA COUNTY MUD 2 · 3,567 people · 2025 | 4/4 | UCMR-5 |
| Cyanide | 20 µg/L 10% of the EPA limit 200 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2017 | 1/4 | SYR4 |
| Lead | 8 µg/L 53% of the EPA limit 15 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2019
Highest in the ZIP: 18 µg/L — CITY OF PEARLAND MUD 1 · 5,947 people · 2018 | 4/4 | SYR4 |
| Bromodichloromethane | 12.8 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 3/4 | SYR4 |
| Trichloroacetic Acid | 10.915 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 1/4 | SYR4 |
| Bromoform | 7.995 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 4/4 | SYR4 |
| Dibromochloromethane | 6.415 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2019
Highest in the ZIP: 7 µg/L — BRAZORIA COUNTY MUD 2 · 3,567 people · 2019 | 4/4 | SYR4 |
| Arsenic | 4.3 µg/L 43% of the EPA limit 10 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2018
Highest in the ZIP: 6.79 µg/L — BRAZORIA COUNTY MUD 2 · 3,567 people · 2019 | 2/4 | SYR4 |
| Selenium | 3.2 µg/L 6.4% of the EPA limit 50 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2018
Highest in the ZIP: 6.15 µg/L — BRAZORIA COUNTY MUD 2 · 3,567 people · 2019 | 2/4 | SYR4 |
| Xylenes, Total | 4.9 µg/L 0% of the EPA limit 10000 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 2/4 | SYR4 |
| Gross Alpha, Excl. Radon And U | 4.84 pCi/L 32% of the EPA limit 15 pCi/L Main supplier: CITY OF PEARLAND · 125,828 people · 2018 | 2/4 | SYR4 |
| Gross Beta Particle Activity | 4.2 pCi/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2018
Highest in the ZIP: 4.6 pCi/L — BRAZORIA COUNTY MUD 2 · 3,567 people · 2015 | 2/4 | SYR4 |
| Combined Radium (-226 And -228) | 3.275 pCi/L 66% of the EPA limit 5 pCi/L Main supplier: CITY OF PEARLAND · 125,828 people · 2017 | 2/4 | SYR4 |
| Dibromoacetic Acid | 2.6 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2019 | 2/4 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.9900 µg/L 17% of the EPA limit 6 µg/L Highest in the ZIP: BRAZORIA COUNTY MUD 2 · 3,567 people · 2019 | 1/4 | SYR4 |
| Ethylbenzene | 0.5000 µg/L 0.1% of the EPA limit 700 µg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2019
Highest in the ZIP: 0.7000 µg/L — BRAZORIA COUNTY MUD 2 · 3,567 people · 2019 | 2/4 | SYR4 |
| 2,4-D | 0.2000 µg/L 0.3% of the EPA limit 70 µg/L Highest in the ZIP: BRAZORIA COUNTY MUD 2 · 3,567 people · 2019 | 1/4 | SYR4 |
| Asbestos | 0.1952 MFL 2.8% of the EPA limit 7 MFL Main supplier: CITY OF PEARLAND · 125,828 people · 2012 | 1/4 | SYR4 |
| Pfpea | 0.0667 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2025 | 1/4 | UCMR-5 |
| Pfba | 0.0202 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2025 | 1/4 | UCMR-5 |
| Pfhxa | 0.0063 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2025 | 1/4 | UCMR-5 |
| PFOS | 0.0044 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2025 | 1/4 | UCMR-5 |
| PFHXS | 0.0041 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2025 | 1/4 | UCMR-5 |
| PFBS | 0.0037 µg/L No EPA limit set Main supplier: CITY OF PEARLAND · 125,828 people · 2025 | 1/4 | UCMR-5 |
| Lead | 0.0016 mg/L 11% of the EPA limit 0.0150 mg/L Main supplier: CITY OF PEARLAND · 125,828 people · 2025
Highest in the ZIP: 0.0036 mg/L — BRAZORIA COUNTY MUD 2 · 3,567 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 77584
| Supplier | State | Population served |
|---|---|---|
| CITY OF PEARLAND | TX | 125,828 |
| CITY OF PEARLAND MUD 1 | TX | 5,947 |
| BRAZORIA COUNTY MUD 3 | TX | 4,230 |
| BRAZORIA COUNTY MUD 2 | TX | 3,567 |
Frequently asked questions about ZIP 77584 tap water
Is the tap water in ZIP 77584 safe to drink?
EPA testing detected 36 contaminants across the water suppliers serving ZIP 77584. 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 77584?
4 public water suppliers report EPA drinking-water monitoring for ZIP 77584. Each is listed above with its population served.
What contaminants are in ZIP 77584's water?
EPA monitoring detected Fluoride, Nitrate, Nitrate-Nitrite, Copper, Barium, and others across this ZIP's suppliers. The full list with levels and sources is above.