Tap Water Quality Report
Tap water quality in MILLERSVILLE, Maryland
Tap water in MILLERSVILLE, Maryland receives a grade of A (90/100) from TapWaterSafety.org. It's served by 2 public water systems, primarily CROFTON-ODENTON. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Radium, combined (-226 and -228) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in MILLERSVILLE's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utilities serving MILLERSVILLE.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 0.818 ppb, 14x above the EWG health guideline of 0.06 ppb.
Radium, combined (-226 and -228) significantly above health guideline
Moderate concernRadium, combined (-226 and -228) detected at 1.8 pCi/L, 36x above the EWG health guideline of 0.05 pCi/L.
Water systems serving MILLERSVILLE
MILLERSVILLE is served by 2 public water systems. Click any utility to see its complete grade card and treatment plant contact info.
Recommended filters for MILLERSVILLE
Filters matched to the specific contaminants in MILLERSVILLE's water supply.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
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 MILLERSVILLE'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 |
|---|---|---|---|---|---|---|---|---|
| Radium, combined (-226 and -228) Radiological |
1.8 pCi/L | 0.05 | 5.0 | — | — | — | — | 36× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
0.992 ppb | 0.06 | — | — | — | — | — | 17× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
0.667 ppb | 0.15 | 80.0 | 100 | — | — | — | 4.4× over |
| Chromium (hexavalent) Heavy metal |
0.0388 ppb | 0.02 | — | — | — | — | — | 1.9× over |
| Chlorate Disinfection byproduct |
372.5 ppb | 210.0 | — | — | — | — | — | 1.8× over |
| Barium Heavy metal |
60.0 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
5.96 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Cobalt Other |
1.81 ppb | 70.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.469 ppb | 21.0 | — | — | — | — | — | Below guideline |
| 1,1-Dichloroethane Volatile organic compound |
0.00592 ppb | 3.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0389 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.61 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
9.06 ppb | — | — | — | — | — | — | Below guideline |
| Chromium (total) Heavy metal |
3.3 ppb | — | 100.0 | — | — | — | — | 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 CROFTON-ODENTON.