What was found in Waldorf's water
The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.
| Contaminant | Level vs EPA limit | Suppliers | Source |
|---|---|---|---|
| Fluoride | 1098.7 µg/L 27% of the EPA limit 4000 µg/L Main supplier: CHARLES COUNTY GARDENS WATER · 551 people · 2018
Highest in the city: 1253 µg/L — POMFRET ESTATES - UTILCO, INC. · 150 people · 2017 | 13/14 | SYR4 |
| Barium | 275.5 µg/L 14% of the EPA limit 2000 µg/L Highest in the city: BELLEWOOD WATER ASSOCIATION · 75 people · 2019 | 7/14 | SYR4 |
| TTHM | 9.365 µg/L 12% of the EPA limit 80 µg/L Main supplier: CHARLES COUNTY GARDENS WATER · 551 people · 2019
Highest in the city: 30.57 µg/L — POMUNK WATER COMPANY DISTRIBUTION SYSTEM · 340 people · 2017 | 13/14 | SYR4 |
| Gross Beta Particle Activity | 6.6 pCi/L No EPA limit set Main supplier: CHARLES COUNTY GARDENS WATER · 551 people · 2014
Highest in the city: 15.81 pCi/L — BELLEWOOD WATER ASSOCIATION · 75 people · 2017 | 9/14 | SYR4 |
| Xylenes, Total | 11.97 µg/L 0.1% of the EPA limit 10000 µg/L Highest in the city: PINE HILL WATER COMPANY · 140 people · 2016 | 1/14 | SYR4 |
| Total Haloacetic Acids (HAA5) | 10.9975 µg/L 18% of the EPA limit 60 µg/L Main supplier: CHARLES COUNTY GARDENS WATER · 551 people · 2019 | 6/14 | SYR4 |
| Gross Alpha, Excl. Radon And U | 9.505 pCi/L 63% of the EPA limit 15 pCi/L Highest in the city: POMFRET ESTATES - UTILCO, INC. · 150 people · 2017 | 7/14 | SYR4 |
| Chloroform | 8.34 µg/L No EPA limit set Main supplier: CHARLES COUNTY GARDENS WATER · 551 people · 2016
Highest in the city: 8.5175 µg/L — RED HILL WATER COMPANY, INC. · 200 people · 2015 | 12/14 | SYR4 |
| Bromodichloromethane | 1.2605 µg/L No EPA limit set Main supplier: CHARLES COUNTY GARDENS WATER · 551 people · 2016
Highest in the city: 3 µg/L — POMUNK WATER COMPANY DISTRIBUTION SYSTEM · 340 people · 2014 | 8/14 | SYR4 |
| Dibromochloromethane | 2.6 µg/L No EPA limit set Highest in the city: POMUNK WATER COMPANY DISTRIBUTION SYSTEM · 340 people · 2014 | 5/14 | SYR4 |
| Combined Radium (-226 And -228) | 2.54 pCi/L 51% of the EPA limit 5 pCi/L Highest in the city: BELLEWOOD WATER ASSOCIATION · 75 people · 2017 | 7/14 | SYR4 |
| Dichloroacetic Acid | 2.5 µg/L No EPA limit set Main supplier: CHARLES COUNTY GARDENS WATER · 551 people · 2014 | 4/14 | SYR4 |
| Chromium | 2 µg/L 2% of the EPA limit 100 µg/L Highest in the city: OAK HILL WATER COMPANY, LLC · 180 people · 2015 | 4/14 | SYR4 |
| Ethylbenzene | 1.91 µg/L 0.3% of the EPA limit 700 µg/L Highest in the city: PINE HILL WATER COMPANY · 140 people · 2016 | 1/14 | SYR4 |
| Arsenic | 1.4 µg/L 14% of the EPA limit 10 µg/L Highest in the city: POMFRET ESTATES - UTILCO, INC. · 150 people · 2017 | 2/14 | SYR4 |
| Trichloroacetic Acid | 1.3695 µg/L No EPA limit set Highest in the city: BELLEWOOD WATER ASSOCIATION · 75 people · 2014 | 1/14 | SYR4 |
| Dibromoacetic Acid | 1.06 µg/L No EPA limit set Highest in the city: RED HILL WATER COMPANY, INC. · 200 people · 2014 | 1/14 | SYR4 |
| Bromoform | 0.9000 µg/L No EPA limit set Highest in the city: POMUNK WATER COMPANY DISTRIBUTION SYSTEM · 340 people · 2014 | 1/14 | SYR4 |
| Heptachlor Epoxide | 0.1000 µg/L 50% of the EPA limit 0.2000 µg/L Highest in the city: OAK HILL WATER COMPANY, LLC · 180 people · 2019 | 1/14 | SYR4 |
| Lead | 0.0018 mg/L 12% of the EPA limit 0.0150 mg/L Main supplier: CHARLES COUNTY GARDENS WATER · 551 people · 2023
Highest in the city: 0.0026 mg/L — PINE HILL WATER COMPANY · 140 people · 2023 | 13/14 | 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.
These are the utilities' own EPA-reported results, not a city-wide
average. A detection means the lab measured the
substance — it isn't the same as exceeding a legal limit. Hover a source
tag to see the EPA program and years behind each figure.
Water suppliers serving Waldorf
Frequently asked questions about Waldorf tap water
Is Waldorf tap water safe to drink?
EPA testing detected 20 contaminants in the water serving Waldorf. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.
How many water suppliers serve Waldorf?
14 public water suppliers report drinking-water monitoring for Waldorf, Maryland to the EPA. Each is listed above with its population served.
What contaminants are in Waldorf's water?
The contaminants EPA monitoring detected in Waldorf include Fluoride, Barium, TTHM, Gross Beta Particle Activity, Xylenes, Total. The full list, with the level at the main supplier and the data source, is in the table above.
Where does this data come from?
Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.