Know Your Environment. Protect Your Health.

Monochloroacetic acid

City of Redmond Water System

Monochloroacetic 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.

 

160

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.404 ppb326ND - 3.11 ppb
20190.473 ppb328ND - 2.39 ppb
2020N/A00N/A
20211.19 ppb3219ND - 2.74 ppb
20220.502 ppb328ND - 2.40 ppb
20230.478 ppb329ND - 1.92 ppb

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic 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.a public health goal. This health guideline protects against change to fetal growth and development.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-10ND
2018-01-10ND
2018-01-10ND
2018-01-10ND
2018-01-10ND
2018-01-10ND
2018-01-10ND
2018-01-10ND
2018-04-041.94 ppb
2018-04-04ND
2018-04-04ND
2018-04-043.11 ppb
2018-04-041.91 ppb
2018-04-04ND
2018-04-04ND
2018-04-04ND
2018-07-031.50 ppb
2018-07-031.72 ppb
2018-07-03ND
2018-07-032.75 ppb
2018-07-03ND
2018-07-03ND
2018-07-03ND
2018-07-03ND
2018-10-03ND
2018-10-03ND
2018-10-03ND
2018-10-03ND
2018-10-03ND
2018-10-03ND
2018-10-03ND
2018-10-03ND
2019-01-09ND
2019-01-09ND
2019-01-09ND
2019-01-091.89 ppb
2019-01-09ND
2019-01-09ND
2019-01-09ND
2019-01-09ND
2019-04-03ND
2019-04-03ND
2019-04-03ND
2019-04-031.65 ppb
2019-04-031.68 ppb
2019-04-03ND
2019-04-031.67 ppb
2019-04-03ND
2019-07-01ND
2019-07-01ND
2019-07-01ND
2019-07-01ND
2019-07-01ND
2019-07-01ND
2019-07-011.69 ppb
2019-07-01ND
2019-10-02ND
2019-10-02ND
2019-10-02ND
2019-10-022.24 ppb
2019-10-022.39 ppb
2019-10-02ND
2019-10-021.93 ppb
2019-10-02ND
2021-01-064064261ND
2021-01-0640642622.51 ppb
2021-01-0640642632.29 ppb
2021-01-0640642602.21 ppb
2021-01-0640642592.08 ppb
2021-01-0640642662.74 ppb
2021-01-0640642642.27 ppb
2021-01-064064265ND
2021-04-0741015902.11 ppb
2021-04-0741015881.54 ppb
2021-04-0741015831.76 ppb
2021-04-0741015861.86 ppb
2021-04-0741015842.35 ppb
2021-04-0741015871.96 ppb
2021-04-074101589ND
2021-04-074101585ND
2021-07-074172249ND
2021-07-0741722471.64 ppb
2021-07-074172253ND
2021-07-0741722511.61 ppb
2021-07-074172252ND
2021-07-0741722501.69 ppb
2021-07-074172248ND
2021-07-074172254ND
2021-10-0641956701.92 ppb
2021-10-064195673ND
2021-10-0641956721.50 ppb
2021-10-0641956711.83 ppb
2021-10-064195669ND
2021-10-0641956742.32 ppb
2021-10-064195667ND
2021-10-064195668ND
2022-01-1242300401.88 ppb
2022-01-124230039ND
2022-01-124230038ND
2022-01-124230036ND
2022-01-124230034ND
2022-01-124230033ND
2022-01-124230035ND
2022-01-124230037ND
2022-04-064270486ND
2022-04-0642704882.08 ppb
2022-04-0642704922.10 ppb
2022-04-0642704912.13 ppb
2022-04-064270490ND
2022-04-0642704872.40 ppb
2022-04-064270489ND
2022-04-0642704932.28 ppb
2022-07-064310227ND
2022-07-064310233ND
2022-07-0643102341.62 ppb
2022-07-064310229ND
2022-07-064310231ND
2022-07-064310230ND
2022-07-0643102281.58 ppb
2022-07-064310232ND
2022-10-054361916ND
2022-10-054361914ND
2022-10-054361919ND
2022-10-054361915ND
2022-10-054361917ND
2022-10-054361913ND
2022-10-054361920ND
2022-10-054361918ND
2023-01-034397667ND
2023-01-034397665ND
2023-01-034397660ND
2023-01-034397663ND
2023-01-034397664ND
2023-01-034397662ND
2023-01-034397661ND
2023-01-034397666ND
2023-04-074442028ND
2023-04-074442022ND
2023-04-074442021ND
2023-04-074442023ND
2023-04-074442025ND
2023-04-074442027ND
2023-04-074442024ND
2023-04-074442026ND
2023-07-0744827641.55 ppb
2023-07-074482762ND
2023-07-0744827601.53 ppb
2023-07-074482759ND
2023-07-074482758ND
2023-07-0744827571.57 ppb
2023-07-074482763ND
2023-07-0744827611.66 ppb
2023-10-024529329ND
2023-10-0245293271.92 ppb
2023-10-0245293341.77 ppb
2023-10-024529333ND
2023-10-0245293311.81 ppb
2023-10-0245293281.62 ppb
2023-10-0245293301.87 ppb
2023-10-024529332ND