What was found in ZIP 70458
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 | 370 µg/L 9.3% of the EPA limit 4000 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 652.5 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2018 | 3/3 | SYR4 |
| Nitrate-Nitrite | 39 µg/L 0.4% of the EPA limit 10000 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 500 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2019 | 3/3 | SYR4 |
| Copper | 200 µg/L 15% of the EPA limit 1300 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 300 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2018 | 3/3 | SYR4 |
| TTHM | 20.24 µg/L 25% of the EPA limit 80 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 70.835 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2019 | 3/3 | SYR4 |
| Chloroform | 17 µg/L No EPA limit set Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 54.95 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2019 | 3/3 | SYR4 |
| Total Haloacetic Acids (HAA5) | 10.8 µg/L 18% of the EPA limit 60 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 46.21 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2019 | 3/3 | SYR4 |
| Dibromochloromethane | 4.32 µg/L No EPA limit set Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 40.7 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2019 | 3/3 | SYR4 |
| Dichloroacetic Acid | 6.775 µg/L No EPA limit set Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 23.43 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2019 | 3/3 | SYR4 |
| Trichloroacetic Acid | 4.76 µg/L No EPA limit set Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 22.63 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2019 | 3/3 | SYR4 |
| Lithium | 17.3 µg/L No EPA limit set Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2025
Highest in the ZIP: 20.3 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2024 | 3/3 | UCMR-5 |
| Barium | 14.7 µg/L 0.7% of the EPA limit 2000 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 14.73 µg/L — MAGNOLIA-RESOLVE WHISPERWOOD · 6,867 people · 2018 | 3/3 | SYR4 |
| Bromodichloromethane | 5.15 µg/L No EPA limit set Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 13.2605 µg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2019 | 3/3 | SYR4 |
| Dalapon | 3.765 µg/L 1.9% of the EPA limit 200 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 12.67 µg/L — MAGNOLIA-RESOLVE WHISPERWOOD · 6,867 people · 2018 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 10.212 µg/L 170% of the EPA limit, at the 95th percentile of samples — 6 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019 | 2/3 | SYR4 |
| Chromium | 9 µg/L 9% of the EPA limit 100 µg/L Highest in the ZIP: MAGNOLIA-RESOLVE WHISPERWOOD · 6,867 people · 2018 | 1/3 | SYR4 |
| Dibromoacetic Acid | 1.6 µg/L No EPA limit set Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 8.169 µg/L — MAGNOLIA-RESOLVE WHISPERWOOD · 6,867 people · 2019 | 3/3 | SYR4 |
| Monochloroacetic Acid | 6.768 µg/L No EPA limit set Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019 | 3/3 | SYR4 |
| Bromoform | 5.53 µg/L No EPA limit set Highest in the ZIP: MAGNOLIA-RESOLVE WHISPERWOOD · 6,867 people · 2019 | 1/3 | SYR4 |
| Lead | 4 µg/L 27% of the EPA limit 15 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019
Highest in the ZIP: 5.45 µg/L — MAGNOLIA-RESOLVE WHISPERWOOD · 6,867 people · 2019 | 3/3 | SYR4 |
| Gross Alpha, Excl. Radon And U | 3.07 pCi/L 20% of the EPA limit 15 pCi/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2016 | 1/3 | SYR4 |
| Gross Beta Particle Activity | 2.05 pCi/L No EPA limit set Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019 | 1/3 | SYR4 |
| Selenium | 1.498 µg/L 3% of the EPA limit 50 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019 | 1/3 | SYR4 |
| Dichloromethane | 1.2 µg/L 24% of the EPA limit 5 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019 | 1/3 | SYR4 |
| Combined Radium (-226 And -228) | 0.6817 pCi/L 14% of the EPA limit 5 pCi/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019 | 2/3 | SYR4 |
| Di(2-ethylhexyl) Adipate | 0.5600 µg/L 0.1% of the EPA limit 400 µg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2019 | 1/3 | SYR4 |
| Hexachlorobenzene | 0.0560 µg/L 5.6% of the EPA limit 1 µg/L Highest in the ZIP: MAGNOLIA-RESOLVE WHISPERWOOD · 6,867 people · 2018 | 1/3 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SLIDELL WATER SUPPLY · 35,547 people · 2024
Highest in the ZIP: 0.0010 mg/L — MAGNOLIA-EDEN ISLES · 10,155 people · 2025 | 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 70458
| Supplier | State | Population served |
|---|---|---|
| SLIDELL WATER SUPPLY | LA | 35,547 |
| MAGNOLIA-EDEN ISLES | MO | 10,155 |
| MAGNOLIA-RESOLVE WHISPERWOOD | MO | 6,867 |
Frequently asked questions about ZIP 70458 tap water
Is the tap water in ZIP 70458 safe to drink?
EPA testing detected 27 contaminants across the water suppliers serving ZIP 70458. 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 70458?
3 public water suppliers report EPA drinking-water monitoring for ZIP 70458. Each is listed above with its population served.
What contaminants are in ZIP 70458's water?
EPA monitoring detected Fluoride, Nitrate-Nitrite, Copper, TTHM, Chloroform, and others across this ZIP's suppliers. The full list with levels and sources is above.