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National Drinking Water Database


Trichloroacetic acid in Arizona


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 Arizona

52 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)
1City of Glendale
Glendale, AZ
180,0001 of 145.09 ppb
(45.09 ppb)
2Grand Canyon Np
Grand Canyon, AZ
15,0002 of 237 ppb
(25 to 49 ppb)
3Usfs-Knf-Tusayan Admin
Williams, AZ
802 of 236.35 ppb
(2.7 to 70 ppb)
4Town of Fredonia
Fredonia, AZ
1,3001 of 136 ppb
(36 ppb)
5City of Flagstaff
Flagstaff, AZ
41,2009 of 1124.68 ppb
(0 to 64.4 ppb)
6City of Page
Page, AZ
9,7503 of 317.17 ppb
(12 to 23 ppb)
7City of Tolleson
Tolleson, AZ
4,4389 of 916.23 ppb
(2.27 to 45.33 ppb)
8Cave Creek Water Co
Cave Creek, AZ
3,90011 of 1114.8 ppb
(2.3 to 83 ppb)
9City of Tempe
Tempe, AZ
160,0009 of 914.07 ppb
(2.43 to 26 ppb)
10City of Meza Utilities Department
Mesa, AZ
350,0008 of 910.13 ppb
(0 to 42.6 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 Arizona

There are no violations reported for this contaminant in Arizona