What was found in ZIP 20602
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 |
|---|---|---|---|
| Nitrate | 1000 µg/L 10% of the EPA limit 10000 µg/L Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2015 | 1/1 | SYR4 |
| Fluoride | 916 µg/L 23% of the EPA limit 4000 µg/L Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2019 | 1/1 | SYR4 |
| Barium | 374 µg/L 19% of the EPA limit 2000 µg/L Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2019 | 1/1 | SYR4 |
| TTHM | 82.355 µg/L 103% of the EPA limit, at the 95th percentile of samples — 80 µg/L Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2019 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 39.15 µg/L 65% of the EPA limit 60 µg/L Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2019 | 1/1 | SYR4 |
| Chloroform | 37.12 µg/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2015 | 1/1 | SYR4 |
| Chromium | 16.9 µg/L 17% of the EPA limit 100 µg/L Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2019 | 1/1 | SYR4 |
| Trichloroacetic Acid | 15.65 µg/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2014 | 1/1 | SYR4 |
| Gross Alpha, Excl. Radon And U | 15.33 pCi/L 102% of the EPA limit, at the 95th percentile of samples — 15 pCi/L Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2019 | 1/1 | SYR4 |
| Bromodichloromethane | 14.3 µg/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2015 | 1/1 | SYR4 |
| Gross Beta Particle Activity | 12.975 pCi/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2018 | 1/1 | SYR4 |
| Dichloroacetic Acid | 8.595 µg/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2014 | 1/1 | SYR4 |
| Selenium | 6.055 µg/L 12% of the EPA limit 50 µg/L Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2019 | 1/1 | SYR4 |
| Monochloroacetic Acid | 4.68 µg/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2014 | 1/1 | SYR4 |
| Dibromochloromethane | 4.185 µg/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2015 | 1/1 | SYR4 |
| Combined Radium (-226 And -228) | 2.62 pCi/L 52% of the EPA limit 5 pCi/L Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2019 | 1/1 | SYR4 |
| Dibromoacetic Acid | 2.46 µg/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2014 | 1/1 | SYR4 |
| Pfpea | 0.0060 µg/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2025 | 1/1 | UCMR-5 |
| Pfhxa | 0.0051 µg/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2025 | 1/1 | UCMR-5 |
| PFBS | 0.0031 µg/L No EPA limit set Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2025 | 1/1 | UCMR-5 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: WALDORF - CHARLES COUNTY DPW · 84,296 people · 2023 | 1/1 | 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 20602
| Supplier | State | Population served |
|---|---|---|
| WALDORF - CHARLES COUNTY DPW | 84,296 |
Frequently asked questions about ZIP 20602 tap water
Is the tap water in ZIP 20602 safe to drink?
EPA testing detected 21 contaminants across the water suppliers serving ZIP 20602. 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 20602?
1 public water supplier report EPA drinking-water monitoring for ZIP 20602. Each is listed above with its population served.
What contaminants are in ZIP 20602's water?
EPA monitoring detected Nitrate, Fluoride, Barium, TTHM, Total Haloacetic Acids (HAA5), and others across this ZIP's suppliers. The full list with levels and sources is above.