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National Drinking Water Database


Trichloroacetic acid in Maryland


Trichloroacetic acid is a disinfection byproduct regulated by EPA as one of five haloacetic acids that are formed when chlorine, chloramines or other disinfectants react with organic and inorganic matter in water.

The Most Polluted Communities in Maryland

209 water utilities reported detecting Trichloroacetic acid in tap water since 2004, according to EWG's analysis of water quality data supplied by state water agencies

Ranked by highest average Trichloroacetic acid level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Oakland
Oakland, MD
1,85017 of 1737.42 ppb
(13.1 to 100.94 ppb)
2Nantucket Point(Distribution-Delaware)
Berlin, MD
6001 of 137.3 ppb
(37.3 ppb)
3A.P.G. Edgewood Arsenal
Aberdeen Proving Gro, MD
6,20018 of 1828.3 ppb
(5.7 to 84 ppb)
4Lake Linganore
Frederick, MD
13,65621 of 2128.24 ppb
(8.93 to 51.33 ppb)
5Mccoole Distribution System
Cumberland, MD
8308 of 827.21 ppb
(8.39 to 49.3 ppb)
6Town of North East
North East, MD
5,19018 of 1825.88 ppb
(4.88 to 45.35 ppb)
7Perry Point V.A. Hospital
Perry Point, MD
2,00011 of 1125.68 ppb
(8.4 to 76.4 ppb)
8Town of Perryville
Perryville, MD
3,67231 of 3225.35 ppb
(0 to 47.9 ppb)
9Harford County D.P.W.
Perryman, MD
104,56722 of 2324.32 ppb
(0 to 68 ppb)
10Baltimore City Department of Public Works
Baltimore, MD
1,600,000105 of 10522.19 ppb
(4.5 to 59.75 ppb)

Health Based Limits for Trichloroacetic acid

StandardDescriptionLevel
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.20 ppb
Lifetime health-based limit, non-cancer riskConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for a lifetime of exposure. The Lifetime health-based limit (or Health Advisory, HA) is based on exposure for a a 70-kg adult consuming 2 liters of water per day. Source: U.S. Environmental Protection Agency.20 ppb
Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.60 ppb
Drinking Water Equivalent LevelA lifetime exposure concentration protective of adverse, noncarcinogenic health effects, that assumes all of the exposure to a contaminant is from drinking water. Source: U.S. Environmental Protection Agency.1000 ppb
Children's health-based limit for 1-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic health effects for up to one day of exposure. The One-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.3000 ppb
Children's health-based limit for 10-day exposureConcentration of a chemical in drinking water that is not expected to cause any adverse, noncarcinogenic effects for up to ten days of exposure. The Ten-Day health-based limit (or Health Advisory, HA) is typically set to protect a 10-kg child consuming 1 liter of water per day. Source: U.S. Environmental Protection Agency.3000 ppb

Violation Summary for Trichloroacetic acid in Maryland

There are no violations reported for this contaminant in Maryland