City of Westminster (MD) Water Quality

City of Westminster is a large public water system in EPA region 3 that provides tap water for the 21157 zip codes. It has 19 facilities where the water supply was tested for 78 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 52.061 µg/L. The maximum reported level of Manganese was 6.34 µg/L. There were 2 contamintants found in the City of Westminster water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (10)

1,2,3-trichloropropane (10)

1,3-butadiene (10)

1,4-dioxane (10)

1-butanol (12)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (20)

1H,1H,2H,2H-perfluorodecane sulfonic acid (20)

1H,1H,2H,2H-perfluorohexane sulfonic acid (20)

1H,1H,2H,2H-perfluorooctane sulfonic acid (20)

2,4-dinitrotoluene (18)

2,6-dinitrotoluene (18)

2-methoxyethanol (12)

2-propen-1-ol (Allyl Alcohol) (12)

4,4'-dichloro dichlorophenyl ethylene (DDE) (18)

4,8-dioxa-3H-perfluorononanoic acid (20)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (20)

alpha-hexachlorocyclohexane (12)

anatoxin-a (24)

bromochloromethane (Halon 1011) (10)

bromomethane (10)

Butylated Hydroxyanisole (12)

chlorate (20)

chlorodifluoromethane (HCFC-22) (10)

chloromethane (10)

chlorpyrifos (12)

chromium (20)

chromium-6 (20)

cobalt (20)

cylindrospermopsin (24)

dimethipin (12)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (18)

ethoprop (12)

Germanium (12)

HAA5 (five regulated haloacetic acids) (16)

HAA6Br (six brominated haloacetic acids) (16)

HAA9 (nine haloacetic acids) (16)

hexafluoropropylene oxide dimer acid (GenX) (20)

lithium (20)

Manganese (12)

methyl-tertiary-butyl-ether (MTBE) (18)

molinate (18)

molybdenum (20)

N-ethyl perfluorooctanesulfonamidoacetic acid (20)

N-methyl perfluorooctanesulfonamidoacetic acid (20)

nitrobenzene (18)

nonafluoro-3,6-dioxaheptanoic acid (20)

o-toluidine (12)

oxyfluorfen (12)

perchlorate (18)

perfluoro(2-ethoxyethane)sulfonic acid (20)

perfluoro-3-methoxypropanoic acid (20)

perfluoro-4-methoxybutanoic acid (20)

perfluorobutanesulfonic acid (30)

perfluorobutanoic acid (20)

perfluorodecanoic acid (20)

perfluorododecanoic acid (20)

perfluoroheptanesulfonic acid (20)

perfluoroheptanoic acid (30)

perfluorohexanesulfonic acid (30)

perfluorohexanoic acid (20)

perfluorononanoic acid (30)

perfluorooctanesulfonic acid (30)

perfluorooctanoic acid (30)

perfluoropentanesulfonic acid (20)

perfluoropentanoic acid (20)

perfluorotetradecanoic acid (20)

perfluorotridecanoic acid (20)

perfluoroundecanoic acid (20)

profenofos (12)

quinoline (12)

s-ethyl-dipropylthiocarbamate (EPTC) (18)

strontium (20)

tebuconazole (12)

terbacil (18)

total microcystins (24)

Total Permethrin (12)

tribufos (12)

vanadium (20)

Sampling Facilities

Cranberry WTP
Surface Water (SW)

WTP POEEntry Point to the Distribution System (EP)

Kriders Church Well 5 WTP
Ground Water (Under Direct Influence of Surface Water) (GU)

WTP POEEntry Point to the Distribution System (EP)

Carfaro Well 7
Ground Water (Under Direct Influence of Surface Water) (GU)

WTP POEEntry Point to the Distribution System (EP)

County Shop Well 3 WTP
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Airport Well 4 WTP
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Center Street Well 6 WTP
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Votech Well 8 WTP
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Koontz Prop Wells 9 & 10
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Roops Mill
Ground Water (GW)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Gesell WTP
Ground Water (Under Direct Influence of Surface Water) (GU)

Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

Pump Station 7
Multiple Sources (MX)

Sample tapDistribution System (DS)

Belair Road Supply
Multiple Sources (MX)

Sample TapDistribution System (DS)

525 Old Washington Road
Multiple Sources (MX)

Sample TapDistribution System (DS)

Firestone Tire
Multiple Sources (MX)

Sample TapDistribution System (DS)

Airport Well 4 WTP
Ground Water (GW)

WTP POEEntry Point to the Distribution System (EP)

Distribution System - SW
Surface Water (SW)

DSMRT for Cranberry WTPMaximum Residence Time (MR)

Distribution System - GW
Ground Water (GW)

DSMRT for Airport Well 4Maximum Residence Time (MR)

Distribution System - GU
Ground Water (Under Direct Influence of Surface Water) (GU)

DSMRT for Kriders Church Well 5Maximum Residence Time (MR)

PUMPHOUSE AIRPORT WELL 4
Ground Water (GW)

PUMPHOUSE AIRPORT W 0300000Entry Point to the Distribution System (EP)

FAQ

Is City of Westminster tap water safe to drink?

When was City of Westminster last tested for water contamination?

The latest water samples were taken on March 3rd, 2025.