What was found in La Plata'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 |
|---|---|---|---|
| Nitrate | 86.2 µg/L 0.9% of the EPA limit 10000 µg/L Main supplier: TOWN OF LA PLATA · 11,535 people · 2019
Highest in the city: 5200 µg/L — PARKWAY SUBDIVISION WATER COMPANY · 50 people · 2014 | 6/8 | SYR4 |
| Fluoride | 1117 µg/L 28% of the EPA limit 4000 µg/L Main supplier: TOWN OF LA PLATA · 11,535 people · 2019
Highest in the city: 1400 µg/L — NEWTOWN VILLAGE · 170 people · 2019 | 8/8 | SYR4 |
| Barium | 41.14 µg/L 2.1% of the EPA limit 2000 µg/L Main supplier: TOWN OF LA PLATA · 11,535 people · 2019
Highest in the city: 131.1 µg/L — MARIELLEN PARK · 184 people · 2019 | 8/8 | SYR4 |
| TTHM | 26.81 µg/L 34% of the EPA limit 80 µg/L Main supplier: TOWN OF LA PLATA · 11,535 people · 2019 | 8/8 | SYR4 |
| Gross Alpha, Excl. Radon And U | 7.36 pCi/L 49% of the EPA limit 15 pCi/L Main supplier: TOWN OF LA PLATA · 11,535 people · 2019
Highest in the city: 19.705 pCi/L — CHAPEL POINT WDS/ JUDE HOUSE/ COMM CTR · 280 people · 2019 | 6/8 | SYR4 |
| Total Haloacetic Acids (HAA5) | 18.475 µg/L 31% of the EPA limit 60 µg/L Main supplier: TOWN OF LA PLATA · 11,535 people · 2019 | 7/8 | SYR4 |
| Chloroform | 10.46 µg/L No EPA limit set Main supplier: TOWN OF LA PLATA · 11,535 people · 2015
Highest in the city: 16.05 µg/L — CHAPEL POINT WDS/ JUDE HOUSE/ COMM CTR · 280 people · 2019 | 7/8 | SYR4 |
| Gross Beta Particle Activity | 7.9 pCi/L No EPA limit set Highest in the city: NEWTOWN VILLAGE · 170 people · 2016 | 4/8 | SYR4 |
| Dichloroacetic Acid | 6.213 µg/L No EPA limit set Main supplier: TOWN OF LA PLATA · 11,535 people · 2015 | 7/8 | SYR4 |
| Chromium | 2.285 µg/L 2.3% of the EPA limit 100 µg/L Main supplier: TOWN OF LA PLATA · 11,535 people · 2019
Highest in the city: 5 µg/L — TURKEY HILL WATER COMPANY · 150 people · 2019 | 4/8 | SYR4 |
| Bromodichloromethane | 4.178 µg/L No EPA limit set Main supplier: TOWN OF LA PLATA · 11,535 people · 2015 | 7/8 | SYR4 |
| Trichloroacetic Acid | 2.21 µg/L No EPA limit set Main supplier: TOWN OF LA PLATA · 11,535 people · 2015
Highest in the city: 3.1 µg/L — CHAPEL POINT WDS/ JUDE HOUSE/ COMM CTR · 280 people · 2014 | 7/8 | SYR4 |
| Combined Radium (-226 And -228) | 0.4800 pCi/L 9.6% of the EPA limit 5 pCi/L Main supplier: TOWN OF LA PLATA · 11,535 people · 2016
Highest in the city: 2.665 pCi/L — CHAPEL POINT WDS/ JUDE HOUSE/ COMM CTR · 280 people · 2019 | 5/8 | SYR4 |
| Selenium | 2 µg/L 4% of the EPA limit 50 µg/L Highest in the city: TURKEY HILL WATER COMPANY · 150 people · 2019 | 1/8 | SYR4 |
| Dibromochloromethane | 1.219 µg/L No EPA limit set Main supplier: TOWN OF LA PLATA · 11,535 people · 2015 | 5/8 | SYR4 |
| Di(2-ethylhexyl) Phthalate | 1.1 µg/L 18% of the EPA limit 6 µg/L Highest in the city: GARDEN ESTATES CENTRAL WATER · 55 people · 2019 | 1/8 | SYR4 |
| Lead | 0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: TOWN OF LA PLATA · 11,535 people · 2023
Highest in the city: 0.0010 mg/L — ELLENWOOD · 229 people · 2023 | 8/8 | LCR |
Water suppliers serving La Plata
| Supplier | Population served |
|---|---|
| TOWN OF LA PLATA | 11,535 |
| CHAPEL POINT WDS/ JUDE HOUSE/ COMM CTR | 280 |
| ELLENWOOD | 229 |
| MARIELLEN PARK | 184 |
| NEWTOWN VILLAGE | 170 |
| TURKEY HILL WATER COMPANY | 150 |
| GARDEN ESTATES CENTRAL WATER | 55 |
| PARKWAY SUBDIVISION WATER COMPANY | 50 |
Frequently asked questions about La Plata tap water
Is La Plata tap water safe to drink?
EPA testing detected 17 contaminants in the water serving La Plata. 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 La Plata?
8 public water suppliers report drinking-water monitoring for La Plata, Maryland to the EPA. Each is listed above with its population served.
What contaminants are in La Plata's water?
The contaminants EPA monitoring detected in La Plata include Nitrate, Fluoride, Barium, TTHM, Gross Alpha, Excl. Radon And U. 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.