What was found in ZIP 63020
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 | 1152.5 µg/L 29% of the EPA limit 4000 µg/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019 | 2/2 | SYR4 |
| Copper | 855.6999999999999 µg/L 66% of the EPA limit 1300 µg/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019 | 2/2 | SYR4 |
| Barium | 144.5 µg/L 7.2% of the EPA limit 2000 µg/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019 | 2/2 | SYR4 |
| Nitrate-Nitrite | 46 µg/L 0.5% of the EPA limit 10000 µg/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019 | 1/2 | SYR4 |
| Lithium | 27 µg/L No EPA limit set Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2024 | 1/2 | UCMR-5 |
| Lead | 11.346499999999995 µg/L 76% of the EPA limit 15 µg/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019 | 2/2 | SYR4 |
| Chromium | 5.077999999999999 µg/L 5.1% of the EPA limit 100 µg/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019
Highest in the ZIP: 8.0775 µg/L — DESOTO PWS · 6,400 people · 2019 | 2/2 | SYR4 |
| Gross Alpha, Excl. Radon And U | 6.619999999999999 pCi/L 44% of the EPA limit 15 pCi/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2012 | 1/2 | SYR4 |
| Cadmium | 4.5525 µg/L 91% of the EPA limit 5 µg/L Highest in the ZIP: DESOTO PWS · 6,400 people · 2019 | 1/2 | SYR4 |
| Chloroform | 4.430000000000001 µg/L No EPA limit set Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019 | 2/2 | SYR4 |
| TTHM | 3.268 µg/L 4.1% of the EPA limit 80 µg/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019 | 2/2 | SYR4 |
| Bromodichloromethane | 2.01 µg/L No EPA limit set Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019 | 2/2 | SYR4 |
| Combined Radium (-226 And -228) | 1.8199999999999998 pCi/L 36% of the EPA limit 5 pCi/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2016 | 2/2 | SYR4 |
| Arsenic | 1.63 µg/L 16% of the EPA limit 10 µg/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019 | 2/2 | SYR4 |
| Dichloroacetic Acid | 1.01 µg/L No EPA limit set Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019
Highest in the ZIP: 1.2455 µg/L — DESOTO PWS · 6,400 people · 2019 | 2/2 | SYR4 |
| Dibromochloromethane | 0.7465 µg/L No EPA limit set Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2019
Highest in the ZIP: 0.8310 µg/L — DESOTO PWS · 6,400 people · 2019 | 2/2 | SYR4 |
| Mercury | 0.2100 µg/L 11% of the EPA limit 2 µg/L Highest in the ZIP: DESOTO PWS · 6,400 people · 2019 | 1/2 | SYR4 |
| Lead | 0.0011 mg/L 7.5% of the EPA limit 0.0150 mg/L Main supplier: JEFFERSON COUNTY PWSD 5 · 8,000 people · 2024
Highest in the ZIP: 0.0015 mg/L — DESOTO PWS · 6,400 people · 2025 | 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 63020
| Supplier | State | Population served |
|---|---|---|
| JEFFERSON COUNTY PWSD 5 | MO | 8,000 |
| DESOTO PWS | MO | 6,400 |
Frequently asked questions about ZIP 63020 tap water
Is the tap water in ZIP 63020 safe to drink?
EPA testing detected 18 contaminants across the water suppliers serving ZIP 63020. 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 63020?
2 public water suppliers report EPA drinking-water monitoring for ZIP 63020. Each is listed above with its population served.
What contaminants are in ZIP 63020's water?
EPA monitoring detected Fluoride, Copper, Barium, Nitrate-Nitrite, Lithium, and others across this ZIP's suppliers. The full list with levels and sources is above.