Tap Water Quality Report
Tap water quality in LA PLATA, Maryland
Tap water in LA PLATA, Maryland receives a grade of C (72/100) from TapWaterSafety.org. It's served by WALDORF - CHARLES COUNTY DPW. The most significant water quality concerns are: Bromochloroacetic acid* significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline; Arsenic detected. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in LA PLATA's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving LA PLATA.
Bromochloroacetic acid* significantly above health guideline
Moderate concernBromochloroacetic acid* detected at 4.83 ppb, 242x above the EWG health guideline of 0.02 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 12.6 ppb, 209x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 16.6 ppb, 111x above the EWG health guideline of 0.15 ppb.
Arsenic detected
Moderate concernArsenic detected at 0.205 ppb.
EPA compliance record
Official U.S. EPA records for WALDORF - CHARLES COUNTY DPW (system ID MD0080049) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Radionuclides and Revised Rad Rule | Missed testing or reporting | 07/01/2025 | Open |
| Lead and Copper Rule | Missed testing or reporting | 10/01/2023 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for LA PLATA
Filters matched to the specific contaminants in LA PLATA's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in LA PLATA's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Bromochloroacetic acid* Disinfection byproduct |
4.83 ppb | 0.02 | — | — | — | — | — | 242× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
12.6 ppb | 0.06 | — | — | — | — | — | 209× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
16.6 ppb | 0.15 | 80.0 | 100 | — | — | — | 111× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
7.18 ppb | 0.1 | 60.0 | 60 | — | — | — | 72× over |
| Arsenic Heavy metal |
0.205 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 51× over |
| Radium, combined (-226 and -228) Radiological |
1.11 pCi/L | 0.05 | 5.0 | — | — | — | — | 22× over |
| Dibromochloromethane* Disinfection byproduct |
1.81 ppb | 0.1 | — | — | — | — | — | 18× over |
| Bromodichloromethane Disinfection byproduct |
0.78 ppb | 0.06 | — | — | — | — | — | 13× over |
| Nitrate* Inorganic |
1.06 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 7.6× over |
| Chromium (hexavalent) Heavy metal |
0.108 ppb | 0.02 | — | — | — | — | — | 5.4× over |
| Chloroform Disinfection byproduct |
1.63 ppb | 0.4 | — | — | — | — | — | 4.1× over |
| Bromoform* Disinfection byproduct |
0.55 ppb | 0.5 | — | — | — | — | — | 1.1× over |
| Mercury (inorganic) Heavy metal |
0.269 ppb | 1.2 | 2.0 | 1 | 6 | 1.2 | — | Below guideline |
| Barium Heavy metal |
152.6 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Chlorate Disinfection byproduct |
44.3 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
12.9 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Nitrate and nitrite Inorganic |
0.00341 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Vanadium Other |
0.203 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA)* PFAS |
2.51 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA)* PFAS |
2.11 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.184 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
0.12 ppb | — | 100.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.469 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.0194 ppb | — | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from WALDORF - CHARLES COUNTY DPW.