Water Quality in Columbia, MD (21784)
EPA violation data for public water systems serving ZIP code 21784.
Active Health Violations
5 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.
More violations than 73% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
39,258
Population
71
Water Systems
14
Violations (5yr)
5
Health-Based
Location
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Water Systems Serving This Area (71)
Howard County D.P.W. Distribution
All resolvedEllicott City
City Of Westminster
Freedom District
Springfield State Hospital
Springfield Hospital Distribution
3 health-basedFairhaven Park-Sykesville Baseball
Gaither Manor Apartments
1 health-basedSouth Carroll Swim Club
Piney Run Park Tennis Court-Upper Comfor
Piney Run Park Nature Center
Winfield Inn
Piney Run Park Boat Dock-Lower Comfort
Winfield Vol. Fire Department
Maryland Mallet
Highs #91 - Sykesville
Burrier Queen Funeral Home
Messiah Lutheran Church And Nursery
Tender Learning Care-Sykesville
Annes Mhp
All resolvedEbenezer Umc
Otzi Mediterranean Market & Entery
Bip-N-Bops Pizza Shop
Kingdom Hall Of Jehovahs Witnesses-Syke
Messiah Lutheran Church
Friendship Baptist Church
South Carroll Church Of Nazarene
Original Hawaiian Island Snowball
White Rock Umc
Ava Wanas Montessori School
Winfield Medical Center
Keelei Trailer Park
Keelei Trailer Park
Brandenburg Umc
1 health-basedSun Valley Assisted Living 1
Sun Valley Assisted Living 2 - Meadows
A.H. Renehan Co.
Exxon
Freedom Golf Center
American Legion-Sykesville (Connect Cws)
Dairymen
Messiah Lutheran Nursery
Suzie'S Bar
High'S-Sykesville (Klees Mill
Duke'S Place
Horses, Inc
Piney Run Country Park
Samis Dogs
St. Joseph'S Catholic Comm.
Little Georges Gaither
Baltimore Livestock Exchange
Summit Electric Co.
Little Georges Klee Mill
George'S Super Thrift
White Gates Guest Home
On A Roll
Mobile Menu
Relish Lane Auction
Carroll Insulation
Sun Valley At Morning Breeze
New York J&P Pizza Eldersburg
Bethesda United Methodist Church
Sun Valley At The Homestead
Brinton Woods Nursing And Rehab Center
Legacy School
Sun Valley At The Woods
St. James Umc
Childrens Farm Nursery, Inc.
Homestead Of Sun Valley Llc
Pig N A Poke Restaurant
Horses, Inc.
Contaminants Found
At high levels, nitrate can cause blue baby syndrome in infants.
Missed testing deadlines — not a detection of bacteria.
Annual water quality report delivery requirement.
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
Used to disinfect water — generally safe at regulated levels.
Lead & Copper Levels
Lead (Pb)
Within limitSampled: Jan 2022
How Does This Compare?
Columbia (21784) has more violations than 73% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 14.
Recommended Water Filters
Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.
Reverse Osmosis System
Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.
Targets:Lead, Copper, Arsenic, Mercury, Cadmium
Look for:NSF/ANSI 58 certified
Activated Carbon Filter
Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.
Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor
Look for:NSF/ANSI 42 & 53 certified
Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.