What was found in ZIP 70663
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 |
|---|---|---|---|
| Barium | 1000 µg/L 50% of the EPA limit 2000 µg/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019 | 1/3 | SYR4 |
| Copper | 880 µg/L 68% of the EPA limit 1300 µg/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019 | 3/3 | SYR4 |
| Fluoride | 210 µg/L 5.3% of the EPA limit 4000 µg/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019
Highest in the ZIP: 400 µg/L — CALCASIEU PARISH WW DISTRICT 7 · 4,791 people · 2017 | 3/3 | SYR4 |
| Nitrate-Nitrite | 200 µg/L 2% of the EPA limit 10000 µg/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019 | 1/3 | SYR4 |
| TTHM | 24.05 µg/L 30% of the EPA limit 80 µg/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019
Highest in the ZIP: 44.82 µg/L — CALCASIEU PARISH WW DISTRICT 7 · 4,791 people · 2019 | 3/3 | SYR4 |
| Lithium | 37.9 µg/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2024 | 2/3 | UCMR-5 |
| Total Haloacetic Acids (HAA5) | 10.98 µg/L 18% of the EPA limit 60 µg/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019
Highest in the ZIP: 15.89 µg/L — CALCASIEU PARISH WW DISTRICT 7 · 4,791 people · 2019 | 3/3 | SYR4 |
| Bromodichloromethane | 5.7325 µg/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019
Highest in the ZIP: 15.577 µg/L — CALCASIEU PARISH WW DISTRICT 7 · 4,791 people · 2019 | 3/3 | SYR4 |
| Chloroform | 2.2 µg/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019
Highest in the ZIP: 14.357 µg/L — CALCASIEU PARISH WW DISTRICT 7 · 4,791 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 11.108 µg/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019
Highest in the ZIP: 12.854 µg/L — CALCASIEU PARISH WW DISTRICT 7 · 4,791 people · 2019 | 3/3 | SYR4 |
| Bromoform | 7.7 µg/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 7.5 µg/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019 | 2/3 | SYR4 |
| Gross Beta Particle Activity | 7.3445 pCi/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 2.1715 µg/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019
Highest in the ZIP: 7.16 µg/L — CALCASIEU PARISH WW DISTRICT 7 · 4,791 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 1.69 µg/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019
Highest in the ZIP: 5.19 µg/L — CALCASIEU PARISH WW DISTRICT 7 · 4,791 people · 2019 | 3/3 | SYR4 |
| Dibromoacetic Acid | 4.244 µg/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019 | 3/3 | SYR4 |
| Combined Radium (-226 And -228) | 3.18 pCi/L 64% of the EPA limit 5 pCi/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019 | 1/3 | SYR4 |
| Lead | 3 µg/L 20% of the EPA limit 15 µg/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019 | 3/3 | SYR4 |
| Arsenic | 1 µg/L 10% of the EPA limit 10 µg/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019
Highest in the ZIP: 2.85 µg/L — CALCASIEU PARISH WW DISTRICT 7 · 4,791 people · 2017 | 3/3 | SYR4 |
| Monobromoacetic Acid | 1.79 µg/L No EPA limit set Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 0.8065 µg/L 13% of the EPA limit 6 µg/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2019
Highest in the ZIP: 1.155 µg/L — CALCASIEU PARISH WW DISTRICT 7 · 4,791 people · 2017 | 3/3 | SYR4 |
| Lead | 0.0020 mg/L 13% of the EPA limit 0.0150 mg/L Main supplier: SULPHUR CITY OF WATER SYSTEM · 24,489 people · 2024 | 3/3 | 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 70663
| Supplier | State | Population served |
|---|---|---|
| SULPHUR CITY OF WATER SYSTEM | LA | 24,489 |
| HOUSTON RIVER WATERWORKS DISTRICT 11 | LA | 6,915 |
| CALCASIEU PARISH WW DISTRICT 7 | LA | 4,791 |
Frequently asked questions about ZIP 70663 tap water
Is the tap water in ZIP 70663 safe to drink?
EPA testing detected 22 contaminants across the water suppliers serving ZIP 70663. 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 70663?
3 public water suppliers report EPA drinking-water monitoring for ZIP 70663. Each is listed above with its population served.
What contaminants are in ZIP 70663's water?
EPA monitoring detected Barium, Copper, Fluoride, Nitrate-Nitrite, TTHM, and others across this ZIP's suppliers. The full list with levels and sources is above.