Health-Based Violations
Water systems with health-based violations, meaning contaminant levels exceeded EPA safety limits. These are the most serious type of violation.
About Health-Based Violations
Health-based violations are the most serious type of drinking water violation. They mean a contaminant was detected above the EPA Maximum Contaminant Level (MCL). Common health-based violations involve lead, disinfection byproducts, nitrate, and coliform bacteria. If your system appears below, check with your utility about current water quality and consider a certified water filter.
Systems With Health-Based Violations (43)
City of Jackson
Jackson, Mississippi
Shreveport Water System
Shreveport, Louisiana
Springfield Water and Sewer Commission
Springfield, Massachusetts
Newark Water Department
Newark, New Jersey
Sioux City Water Supply
Sioux City, Iowa
Liberty Utilities New York - Lynbrook
Merrick, New York
Tuscaloosa Water & Sewer
Tuscaloosa, Alabama
Las Cruces Municipal Water System
Las Cruces, New Mexico
Atlanta
Atlanta, Georgia
Kalamazoo
Kalamazoo, Michigan
Mobile, Bd. Of W&s Comm. Of the City Of
Mobile, Alabama
Bjw&sa (0720003)
Okatie, South Carolina
Columbus Public Water System
Columbus, Ohio
Gilbert, Town Of
Gilbert, Arizona
Lowell Regional Water Utility
Lowell, Massachusetts
Fort Wayne - 3 Rivers Filtration Plant
Fort Wayne, Indiana
Columbia City of (sc4010001)
Columbia, South Carolina
Papillion, City Of
Papillion, Nebraska
Kearney, City Of
Kearney, Nebraska
City of Baltimore
Baltimore, Maryland
Aqua Pa Main System
Bryn Mawr, Pennsylvania
Clermont Public Water System
Batavia, Ohio
Phoenix City Of
Phoenix, Arizona
New Orleans Carrollton Water Works
New Orleans, Louisiana
Roswell Municipal Water System
Roswell, New Mexico
Des Moines Water Works
Des Moines, Iowa
Salt Lake City Water System
Salt Lake City, Utah
Cocoa, City Of
Cocoa, Florida
Mcwa
Rochester, New York
Rochester City
Rochester, New York
Cicero
Cicero, Illinois
Veolia Water New Jersey Hackensack
Haworth, New Jersey
Jersey City Mua
Hoboken, New Jersey
Chandler City Of
Chandler, Arizona
Boston Water and Sewer Commission (mwra)
Boston, Massachusetts
Kansas City Pws
Kansas City, Missouri
Madison Water Utility
Madison, Wisconsin
Portland Water Bureau
Portland, Oregon
Norman Utilities Authority
Norman, Oklahoma
Santa Fe Water System (city Of)
Santa Fe, New Mexico
Topeka, City Of
Topeka, Kansas
Fort Smith Water Utilities
Fort Smith, Arkansas
Glen Burnie-Broadneck
Millersville, Maryland
Frequently Asked Questions
A health-based violation means a contaminant in the drinking water exceeded the EPA Maximum Contaminant Level (MCL). These are the most serious violations because they indicate actual contamination above safe limits. Health effects can include cancer risk, organ damage, and developmental issues depending on the contaminant.
43 water systems currently have health-based violations, affecting 15,932,080 people. These systems have accumulated 324 total violations.
If your water system has health-based violations, consider using a certified water filter (NSF/ANSI 53 for health contaminants), requesting your annual Consumer Confidence Report from your water utility, and contacting your state drinking water program for current violation status.