What was found in ZIP 21403
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 | 695.9 µg/L 17% of the EPA limit 4000 µg/L Main supplier: CITY OF ANNAPOLIS · 35,000 people · 2017 | 1/1 | SYR4 |
| Barium | 17.42 µg/L 0.9% of the EPA limit 2000 µg/L Main supplier: CITY OF ANNAPOLIS · 35,000 people · 2017 | 1/1 | SYR4 |
| TTHM | 9.6995 µg/L 12% of the EPA limit 80 µg/L Main supplier: CITY OF ANNAPOLIS · 35,000 people · 2019 | 1/1 | SYR4 |
| Chloroform | 5.346 µg/L No EPA limit set Main supplier: CITY OF ANNAPOLIS · 35,000 people · 2016 | 1/1 | SYR4 |
| Bromodichloromethane | 2.73 µg/L No EPA limit set Main supplier: CITY OF ANNAPOLIS · 35,000 people · 2016 | 1/1 | SYR4 |
| Dibromochloromethane | 1.796 µg/L No EPA limit set Main supplier: CITY OF ANNAPOLIS · 35,000 people · 2016 | 1/1 | SYR4 |
| Dichloroacetic Acid | 1.398 µg/L No EPA limit set Main supplier: CITY OF ANNAPOLIS · 35,000 people · 2015 | 1/1 | SYR4 |
| Total Haloacetic Acids (HAA5) | 1.382 µg/L 2.3% of the EPA limit 60 µg/L Main supplier: CITY OF ANNAPOLIS · 35,000 people · 2019 | 1/1 | SYR4 |
| Lead | 0.0063 mg/L 42% of the EPA limit 0.0150 mg/L Main supplier: CITY OF ANNAPOLIS · 35,000 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 21403
| Supplier | State | Population served |
|---|---|---|
| CITY OF ANNAPOLIS | MD | 35,000 |
Frequently asked questions about ZIP 21403 tap water
Is the tap water in ZIP 21403 safe to drink?
EPA testing detected 9 contaminants across the water suppliers serving ZIP 21403. 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 21403?
1 public water supplier report EPA drinking-water monitoring for ZIP 21403. Each is listed above with its population served.
What contaminants are in ZIP 21403's water?
EPA monitoring detected Fluoride, Barium, TTHM, Chloroform, Bromodichloromethane, and others across this ZIP's suppliers. The full list with levels and sources is above.