The Power of Information

National Drinking Water Database


Dichloroacetic acid in Alaska


Dichloroacetic 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. [read more]

The Most Polluted Communities in Alaska

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

Ranked by highest average Dichloroacetic acid level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Gulkana Village
Gakona, AK
8313 of 1385.14 ppb
(3.88 to 157 ppb)
2Vallenar View Mobile Home Park
Ketchikan, AK
22516 of 1784.31 ppb
(0 to 170 ppb)
3Chalkyitsik Village Water
Chalkyitsik, AK
11010 of 1264.87 ppb
(0 to 156 ppb)
4Golovin Community Water System
Golovin, AK
1506 of 764.11 ppb
(0 to 168 ppb)
5Kasaan
Ketchikan, AK
4613 of 1357.87 ppb
(2.48 to 169 ppb)
6Wales Water System
Wales, AK
17310 of 1342.59 ppb
(0 to 111 ppb)
7Napaskiak East Watering Point
Napaskiak, AK
3671 of 137.7 ppb
(37.7 ppb)
8Thorne Bay
Thorne Bay, AK
95720 of 2036.38 ppb
(1 to 105 ppb)
9Kake Municipal Water
Kake, AK
83315 of 1536.16 ppb
(3.06 to 96 ppb)
10Saxman
Ketchikan, AK
45014 of 1831.81 ppb
(0 to 142 ppb)

Health Based Limits for Dichloroacetic 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.0 ppb
One in one million (10-6) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 1,000,000. Source: U.S. Environmental Protection Agency.0.7 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
One in ten thousand (10-4) Cancer RiskThe concentration of a chemical in drinking water corresponding to an excess estimated lifetime cancer risk of 1 in 10,000. Source: U.S. Environmental Protection Agency.70 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.100 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.5000 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.5000 ppb

Violation Summary for Dichloroacetic acid in Alaska

There are no violations reported for this contaminant in Alaska