Water Quality Report · Updated May 12, 2026
CROFTON-ODENTON
CROFTON-ODENTON delivers tap water graded A (90/100) by TapWaterSafety.org. The utility serves approximately 62,986 residents in MILLERSVILLE, Maryland using groundwater. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline. For questions, the utility can be reached at 443-790-5373.
Is MILLERSVILLE tap water safe to drink?
CROFTON-ODENTON delivers tap water that earns a grade of A (90/100) from TapWaterSafety.org — an excellent rating reflecting minimal contamination and full compliance with health guidelines.
The utility serves 62,986 residents in MILLERSVILLE, drawing from groundwater.
Public testing data identifies 5 contaminants in this water above EWG's health-based guidelines, including: Haloacetic acids (HAA9), Radium, combined (-226 and -228), Total trihalomethanes (TTHMs), Chlorate, Chromium (hexavalent). For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for MILLERSVILLE residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for CROFTON-ODENTON.
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.
Contact CROFTON-ODENTON
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for MILLERSVILLE
Filters matched to the specific contaminants in this 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.
Score breakdown
This utility's overall score of 90/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
0.818 ppb | 0.06 | — | — | — | — | — | 14× over |
| Radium, combined (-226 and -228) Radiological |
0.27 pCi/L | 0.05 | 5.0 | — | — | — | — | 5.3× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
0.667 ppb | 0.15 | 80.0 | 100 | — | — | — | 4.4× over |
| Chlorate Disinfection byproduct |
372.5 ppb | 210.0 | — | — | — | — | — | 1.8× over |
| Chromium (hexavalent) Heavy metal |
0.0308 ppb | 0.02 | — | — | — | — | — | 1.5× over |
| Vanadium Other |
0.283 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.62 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Strontium Radiological |
0.0223 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.14 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
9.06 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
CROFTON-ODENTON service area
This water system serves 1 community in Anne Arundel County, Maryland. Click any city for its dedicated tap water quality page.
Find the right filter for MILLERSVILLE water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.