What was found in ZIP 71457
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 |
|---|---|---|---|
| Copper | 635 µg/L 49% of the EPA limit 1300 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 2/2 | SYR4 |
| Fluoride | 567 µg/L 14% of the EPA limit 4000 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 200 µg/L 2% of the EPA limit 10000 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019
Highest in the ZIP: 270 µg/L — NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2019 | 2/2 | SYR4 |
| Barium | 56.6 µg/L 2.8% of the EPA limit 2000 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019
Highest in the ZIP: 197.5 µg/L — NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2019 | 2/2 | SYR4 |
| Total Haloacetic Acids (HAA5) | 98.955 µg/L 165% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 2/2 | SYR4 |
| Dalapon | 67.9566 µg/L 34% of the EPA limit 200 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 1/2 | SYR4 |
| Dichloroacetic Acid | 67.1 µg/L No EPA limit set Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 2/2 | SYR4 |
| TTHM | 50.72 µg/L 63% of the EPA limit 80 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019
Highest in the ZIP: 52.45 µg/L — NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2019 | 2/2 | SYR4 |
| Chloroform | 44 µg/L No EPA limit set Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019
Highest in the ZIP: 44.985 µg/L — NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2019 | 2/2 | SYR4 |
| Trichloroacetic Acid | 27.2 µg/L No EPA limit set Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 2/2 | SYR4 |
| Lead | 20.8 µg/L 139% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 2/2 | SYR4 |
| Lithium | 14.1 µg/L No EPA limit set Highest in the ZIP: NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2024 | 1/2 | UCMR-5 |
| Monochloroacetic Acid | 7.89 µg/L No EPA limit set Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 1/2 | SYR4 |
| Bromodichloromethane | 7.7 µg/L No EPA limit set Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 2/2 | SYR4 |
| Monobromoacetic Acid | 7.56 µg/L No EPA limit set Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 1/2 | SYR4 |
| Dibromochloromethane | 1.3 µg/L No EPA limit set Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019
Highest in the ZIP: 2.883 µg/L — NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2019 | 2/2 | SYR4 |
| Gross Beta Particle Activity | 2.189 pCi/L No EPA limit set Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019
Highest in the ZIP: 2.277 pCi/L — NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2019 | 2/2 | SYR4 |
| Dibromoacetic Acid | 1.2 µg/L No EPA limit set Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019
Highest in the ZIP: 2.22 µg/L — NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2019 | 2/2 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.436 µg/L 24% of the EPA limit 6 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 2/2 | SYR4 |
| Xylenes, Total | 1.07 µg/L 0% of the EPA limit 10000 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 1/2 | SYR4 |
| Arsenic | 0.9760 µg/L 9.8% of the EPA limit 10 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 1/2 | SYR4 |
| Combined Radium (-226 And -228) | 0.6830 pCi/L 14% of the EPA limit 5 pCi/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019
Highest in the ZIP: 0.8180 pCi/L — NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2019 | 2/2 | SYR4 |
| Bromoform | 0.7100 µg/L No EPA limit set Highest in the ZIP: NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2019 | 1/2 | SYR4 |
| Toluene | 0.5500 µg/L 0.1% of the EPA limit 1000 µg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2019 | 1/2 | SYR4 |
| Pfhpa | 0.0031 µg/L No EPA limit set Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2023 | 1/2 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: CITY OF NATCHITOCHES WATER SYSTEM · 27,693 people · 2023
Highest in the ZIP: 0.0010 mg/L — NATCHITOCHES PARISH WWKS DISTRICT 2 · 8,415 people · 2023 | 2/2 | 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 71457
| Supplier | State | Population served |
|---|---|---|
| CITY OF NATCHITOCHES WATER SYSTEM | LA | 27,693 |
| NATCHITOCHES PARISH WWKS DISTRICT 2 | LA | 8,415 |
Frequently asked questions about ZIP 71457 tap water
Is the tap water in ZIP 71457 safe to drink?
EPA testing detected 26 contaminants across the water suppliers serving ZIP 71457. 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 71457?
2 public water suppliers report EPA drinking-water monitoring for ZIP 71457. Each is listed above with its population served.
What contaminants are in ZIP 71457's water?
EPA monitoring detected Copper, Fluoride, Nitrate-Nitrite, Barium, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.