The Power of Information

National Drinking Water Database


Monochloroacetic acid in Alaska


Monochloroacetic 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

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

Ranked by highest average Monochloroacetic acid level

RankSystem Population Served Positive test results of total reported tests Average Level
(Range)
1Wales Water System
Wales, AK
1738 of 1317.79 ppb
(0 to 73 ppb)
2Gulkana Village
Gakona, AK
8313 of 1415.04 ppb
(0 to 86.8 ppb)
3Shishmaref Water System
Shishmaref, AK
5727 of 1311.16 ppb
(0 to 73.6 ppb)
4Golovin Community Water System
Golovin, AK
1505 of 87.5 ppb
(0 to 21.2 ppb)
5Gambell Water System
Gambell, AK
6696 of 136.6 ppb
(0 to 53.2 ppb)
6St. Michael Water System
St. Michael, AK
3732 of 56.24 ppb
(0 to 28.1 ppb)
7Thorne Bay
Thorne Bay, AK
95714 of 205.94 ppb
(0 to 59.4 ppb)
8Vallenar View Mobile Home Park
Ketchikan, AK
22514 of 185.73 ppb
(0 to 12.7 ppb)
9Napaskiak East Watering Point
Napaskiak, AK
3671 of 15.63 ppb
(5.63 ppb)
10Nsbu - Point Lay
Barrow, AK
2272 of 55.47 ppb
(0 to 19.8 ppb)

Health Based Limits for Monochloroacetic acid

StandardDescriptionLevel
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
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.70 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.70 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.200 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.200 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.350 ppb

Violation Summary for Monochloroacetic acid in Alaska

There are no violations reported for this contaminant in Alaska