Know Your Environment. Protect Your Health.

Dichloroacetic acid

City of Port Angeles

Dichloroacetic acid, one of the group of five haloacetic acids regulated by federal standards, is formed when chlorine or other disinfectants are used to treat drinking water. Haloacetic acids and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

80

Samples

0

Samples exceeding legal limit (MCL)

55

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.10 ppb169ND - 3.80 ppb
20191.58 ppb1610ND - 4.00 ppb
2020N/A00N/A
20211.66 ppb1613ND - 4.70 ppb
20222.23 ppb1614ND - 7.70 ppb
20230.938 ppb169ND - 2.40 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.2 ppb

The EWG Health Guideline of 0.2 ppb for dichloroacetic acid was defined by the California Office of Environmental Health Hazard Assessment's public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer and harm to reproduction and child development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-311.60 ppb
2018-01-311.80 ppb
2018-01-312.00 ppb
2018-01-313.80 ppb
2018-04-11ND
2018-04-111.000 ppb
2018-04-111.30 ppb
2018-04-113.60 ppb
2018-07-13ND
2018-07-13ND
2018-07-13ND
2018-07-131.50 ppb
2018-10-24ND
2018-10-24ND
2018-10-241.000 ppb
2018-11-08ND
2019-01-174.00 ppb
2019-01-172.00 ppb
2019-01-172.10 ppb
2019-01-17ND
2019-04-101.30 ppb
2019-04-103.70 ppb
2019-04-10ND
2019-04-10ND
2019-07-163.80 ppb
2019-07-161.90 ppb
2019-07-161.000 ppb
2019-07-16ND
2019-10-231.60 ppb
2019-10-23ND
2019-10-23ND
2019-10-233.80 ppb
2021-03-0940906371.80 ppb
2021-03-0940906384.70 ppb
2021-03-0940906341.20 ppb
2021-03-0940906401.50 ppb
2021-06-0841687981.10 ppb
2021-06-084168804ND
2021-06-0841688023.00 ppb
2021-06-0841688001.20 ppb
2021-09-144178754ND
2021-09-1441787321.10 ppb
2021-09-1441787381.40 ppb
2021-09-1441787462.70 ppb
2021-12-1342214491.30 ppb
2021-12-1342214512.60 ppb
2021-12-134221453ND
2021-12-1342214552.90 ppb
2022-02-0842461542.30 ppb
2022-02-0842461581.70 ppb
2022-02-0842461567.70 ppb
2022-02-0842461521.70 ppb
2022-04-1242729264.30 ppb
2022-04-124272918ND
2022-04-1242729221.40 ppb
2022-04-1242729202.10 ppb
2022-07-1243161871.20 ppb
2022-07-1243161891.60 ppb
2022-07-1243161933.20 ppb
2022-07-1243161911.30 ppb
2022-10-1843684241.000 ppb
2022-10-184368422ND
2022-10-2043684201.40 ppb
2022-10-2643703714.70 ppb
2023-01-244407735ND
2023-01-2444077372.10 ppb
2023-01-2444077331.50 ppb
2023-01-244407731ND
2023-05-094457484ND
2023-05-0944574822.00 ppb
2023-05-094457486ND
2023-05-094457488ND
2023-08-0244970241.30 ppb
2023-08-0244970221.000 ppb
2023-08-0244970202.40 ppb
2023-08-024497026ND
2023-11-074555599ND
2023-11-0745556011.30 ppb
2023-11-0745556031.000 ppb
2023-11-0745556052.40 ppb