Know Your Environment. Protect Your Health.

Dichloroacetic acid

Regional Water Authority

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.

 

292

Samples

0

Samples exceeding legal limit (MCL)

292

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201815.8 ppb48483.40 ppb - 25.9 ppb
201910.7 ppb48482.60 ppb - 15.6 ppb
202011.2 ppb50500.600 ppb - 16.8 ppb
202111.4 ppb49490.800 ppb - 18.7 ppb
202211.7 ppb49490.500 ppb - 18.5 ppb
202310.0 ppb48483.88 ppb - 15.7 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
2018-03-06DBP 20048926819.2 ppb
2018-03-06DBP 20048927522.4 ppb
2018-03-06DBP 20048928721.2 ppb
2018-03-07DBP 20048953712.8 ppb
2018-03-07DBP 20048953822.4 ppb
2018-03-07DBP 20048953924.4 ppb
2018-03-07DBP 20048954022.2 ppb
2018-03-07DBP 20048954119.2 ppb
2018-03-08DBP 2004895658.80 ppb
2018-03-09DBP 20048970123.7 ppb
2018-03-09DBP 20048970225.9 ppb
2018-03-09DBP 20048970316.0 ppb
2018-06-05DBP 20049598414.7 ppb
2018-06-05DBP 20049598916.2 ppb
2018-06-05DBP 20049600217.8 ppb
2018-06-06DBP 20049623516.2 ppb
2018-06-07DBP 20049637515.0 ppb
2018-06-07DBP 20049637618.7 ppb
2018-06-07DBP 20049641713.6 ppb
2018-06-08DBP 20049650718.2 ppb
2018-06-08DBP 20049650817.1 ppb
2018-06-08DBP 20049650920.2 ppb
2018-06-08DBP 20049651021.8 ppb
2018-06-08DBP 20049651117.8 ppb
2018-09-04DBP 20050373215.3 ppb
2018-09-04DBP 2005037375.80 ppb
2018-09-04DBP 20050384211.2 ppb
2018-09-04DBP 20050391210.4 ppb
2018-09-04DBP 20050391310.9 ppb
2018-09-04DBP 20050391415.8 ppb
2018-09-05DBP 20050398116.7 ppb
2018-09-05DBP 20050408614.1 ppb
2018-09-05DBP 2005040874.50 ppb
2018-09-06DBP 2005041853.40 ppb
2018-09-06DBP 2005042115.30 ppb
2018-09-07DBP 20050444116.1 ppb
2018-12-03DBP 2005143725.40 ppb
2018-12-03DBP 20051440615.6 ppb
2018-12-04DBP 20051444715.0 ppb
2018-12-04DBP 20051445217.4 ppb
2018-12-04DBP 20051462518.3 ppb
2018-12-04DBP 20051462618.9 ppb
2018-12-04DBP 20051462714.9 ppb
2018-12-04DBP 20051462813.5 ppb
2018-12-04DBP 20051462913.9 ppb
2018-12-05DBP 20051495216.2 ppb
2018-12-06DBP 20051506914.2 ppb
2018-12-06DBP 20051507020.0 ppb
2019-03-04DBP 2005232157.20 ppb
2019-03-04DBP 2005232179.70 ppb
2019-03-05DBP 2005232629.00 ppb
2019-03-05DBP 2005232699.80 ppb
2019-03-05DBP 20052345610.6 ppb
2019-03-05DBP 20052345715.5 ppb
2019-03-05DBP 20052345810.4 ppb
2019-03-05DBP 2005234599.90 ppb
2019-03-05DBP 2005234636.60 ppb
2019-03-07DBP 20052388410.1 ppb
2019-03-08DBP 2005240008.30 ppb
2019-03-08DBP 20052400212.2 ppb
2019-06-03DBP 20053437311.7 ppb
2019-06-03DBP 20053441410.5 ppb
2019-06-04DBP 20053449110.00 ppb
2019-06-04DBP 20053449610.5 ppb
2019-06-04DBP 20053460011.2 ppb
2019-06-04DBP 20053472512.2 ppb
2019-06-04DBP 20053472712.9 ppb
2019-06-04DBP 20053472915.6 ppb
2019-06-05DBP 20053503914.1 ppb
2019-06-05DBP 20053504110.9 ppb
2019-06-06DBP 20053519711.1 ppb
2019-06-07DBP 20053535710.3 ppb
2019-09-03DBP 20054698811.9 ppb
2019-09-03DBP 2005469932.60 ppb
2019-09-04DBP 2005474008.00 ppb
2019-09-04DBP 2005474029.10 ppb
2019-09-04DBP 20054740313.2 ppb
2019-09-04DBP 20054740412.6 ppb
2019-09-04DBP 20054740511.9 ppb
2019-09-05DBP 20054746010.1 ppb
2019-09-05DBP 2005476677.70 ppb
2019-09-06DBP 20054782611.9 ppb
2019-09-06DBP 20054782710.1 ppb
2019-09-06DBP 20054782813.6 ppb
2019-12-02DBP 20055840515.3 ppb
2019-12-02DBP 20055840611.5 ppb
2019-12-02DBP 20055840712.6 ppb
2019-12-03DBP 20055845410.2 ppb
2019-12-03DBP 20055845911.7 ppb
2019-12-03DBP 20055861211.2 ppb
2019-12-04DBP 2005589169.70 ppb
2019-12-04DBP 20055891710.3 ppb
2019-12-04DBP 2005589197.60 ppb
2019-12-05DBP 20055907311.2 ppb
2019-12-05DBP 2005590989.10 ppb
2019-12-06DBP 20055919510.4 ppb
2020-03-02DBP 20056771312.5 ppb
2020-03-02DBP 20056771416.8 ppb
2020-03-02DBP 20056771514.7 ppb
2020-03-02DBP 20056771811.4 ppb
2020-03-03DBP 20056778011.6 ppb
2020-03-03DBP 20056778713.6 ppb
2020-03-03DBP 2005679209.00 ppb
2020-03-03DBP 20056792110.1 ppb
2020-03-04DBP 20056817711.6 ppb
2020-03-04DBP 20056817810.6 ppb
2020-03-05DBP 2005682850.600 ppb
2020-03-05DBP 20056838410.1 ppb
2020-03-12DBP 20056916411.1 ppb
2020-06-01DBP 20057726412.9 ppb
2020-06-01DBP 20057726516.8 ppb
2020-06-01DBP 20057726613.7 ppb
2020-06-02DBP 20057731811.8 ppb
2020-06-02DBP 20057732711.1 ppb
2020-06-02DBP 20057739914.9 ppb
2020-06-02DBP 20057740111.4 ppb
2020-06-03DBP 20057771912.3 ppb
2020-06-03DBP 20057772115.7 ppb
2020-06-04DBP 20057795410.3 ppb
2020-06-04DBP 20057795512.0 ppb
2020-06-05DBP 20057807710.4 ppb
2020-09-08DBP 2005891099.40 ppb
2020-09-08DBP 20058911813.1 ppb
2020-09-08DBP 20058925214.4 ppb
2020-09-08DBP 2005892538.80 ppb
2020-09-08DBP 2005892547.40 ppb
2020-09-09DBP 20058956013.5 ppb
2020-09-09DBP 20058956113.7 ppb
2020-09-10DBP 2005897977.80 ppb
2020-09-10DBP 2005897996.30 ppb
2020-09-10DBP 20058980311.8 ppb
2020-09-10DBP 20058980611.7 ppb
2020-09-11DBP 20058986812.8 ppb
2020-12-07DBP 20060013613.1 ppb
2020-12-07DBP 20060013711.5 ppb
2020-12-08DBP 20060032610.00 ppb
2020-12-08DBP 20060040710.5 ppb
2020-12-08DBP 20060040811.2 ppb
2020-12-09DBP 2006005627.60 ppb
2020-12-09DBP 2006006078.00 ppb
2020-12-09DBP 20060065311.5 ppb
2020-12-09DBP 20060065611.6 ppb
2020-12-10DBP 2006008829.70 ppb
2020-12-10DBP 2006008848.30 ppb
2020-12-10DBP 200600884B8.30 ppb
2020-12-11DBP 2006009549.60 ppb
2021-03-08DBP 20060880910.4 ppb
2021-03-08DBP 2006088359.60 ppb
2021-03-08DBP 20060883611.3 ppb
2021-03-08DBP 20060883710.1 ppb
2021-03-09DBP 2006089149.10 ppb
2021-03-09DBP 20060908912.2 ppb
2021-03-09DBP 2006090906.70 ppb
2021-03-09DBP 2006090938.10 ppb
2021-03-10DBP 2006092518.30 ppb
2021-03-10DBP 20060925211.4 ppb
2021-03-11DBP 2006094200.800 ppb
2021-03-11DBP 20060951210.5 ppb
2021-03-12DBP 20060958410.2 ppb
2021-06-07DBP 20061968011.1 ppb
2021-06-07DBP 20061967812.5 ppb
2021-06-07DBP 20061967913.5 ppb
2021-06-08DBP 20061980010.9 ppb
2021-06-08DBP 20061980211.2 ppb
2021-06-08DBP 20061992015.5 ppb
2021-06-08DBP 2006199217.30 ppb
2021-06-08DBP 2006199228.50 ppb
2021-06-09DBP 20062017316.0 ppb
2021-06-10DBP 20062049311.9 ppb
2021-06-10DBP 20062049510.5 ppb
2021-06-11DBP 20062058310.00 ppb
2021-09-13300057530 30005753115.5 ppb
2021-09-13300057533 30005753418.7 ppb
2021-09-13300057536 30005753714.6 ppb
2021-09-14300058253 30005825614.5 ppb
2021-09-14300058258 3000582619.26 ppb
2021-09-14300059322 3000593259.28 ppb
2021-09-14300059327 30005932813.5 ppb
2021-09-14300059398 3000593999.65 ppb
2021-09-15300060630 30006063112.2 ppb
2021-09-16300061467 30006146817.8 ppb
2021-09-16300061470 30006147112.4 ppb
2021-09-17300062097 30006209812.7 ppb
2021-12-13D300117139 30011714014.6 ppb
2021-12-13D300117142 30011714313.2 ppb
2021-12-13D300117145 30011714612.0 ppb
2021-12-13D300117148 30011714914.3 ppb
2021-12-13D300118224 3001182278.55 ppb
2021-12-13D300118229 3001182308.39 ppb
2021-12-14D300117272 30011727511.4 ppb
2021-12-14D300117277 30011728014.1 ppb
2021-12-15D300119211 3001192129.64 ppb
2021-12-16D300120051 30012005213.6 ppb
2021-12-16D300120054 30012005511.7 ppb
2021-12-17D300120678 30012067910.4 ppb
2022-03-07D300153474 30015347512.2 ppb
2022-03-07D300153477 30015347814.7 ppb
2022-03-07D300153480 30015348111.4 ppb
2022-03-08D300153988 30015399111.8 ppb
2022-03-08D300153993 30015399611.8 ppb
2022-03-08D300154252 3001542559.25 ppb
2022-03-08D300154257 30015425812.7 ppb
2022-03-08D300154260 3001542618.03 ppb
2022-03-09D300155008 30015500911.5 ppb
2022-03-10D300155239 3001552420.500 ppb
2022-03-10D300155826 30015582812.0 ppb
2022-03-10D300155831 30015583314.0 ppb
2022-03-11D300156650 3001566517.71 ppb
2022-06-06D300193482 30019348515.9 ppb
2022-06-06D300193487 30019348914.6 ppb
2022-06-06D300193491 30019349316.4 ppb
2022-06-06D300193495 30019349711.3 ppb
2022-06-07D300194485 3001944877.71 ppb
2022-06-07D300194421 30019442413.7 ppb
2022-06-07D300194474 30019447710.6 ppb
2022-06-08D300194960 30019496212.9 ppb
2022-06-08D300196206 30019620813.2 ppb
2022-06-08D300196210 30019621218.5 ppb
2022-06-08D300196214 30019621615.5 ppb
2022-06-10D300196552 30019655410.9 ppb
2022-09-12D300242309 30024231116.6 ppb
2022-09-12D300242313 30024231512.9 ppb
2022-09-13D300242867 30024287013.9 ppb
2022-09-13D300242872 30024287513.0 ppb
2022-09-13D300243354 3002433574.87 ppb
2022-09-13D300243359 3002433615.83 ppb
2022-09-14D300243943 30024394513.0 ppb
2022-09-14D300243947 30024394911.9 ppb
2022-09-14D300243951 3002439539.76 ppb
2022-09-15D300244400 30024440210.4 ppb
2022-09-15D300244404 30024440610.6 ppb
2022-09-15D300245400 30024540210.1 ppb
2022-12-05D300280513 30028051512.3 ppb
2022-12-05D300280517 30028051914.7 ppb
2022-12-05D300280521 30028052311.3 ppb
2022-12-06D300281387 3002813908.54 ppb
2022-12-06D300281392 30028139413.3 ppb
2022-12-06D300281396 3002813986.15 ppb
2022-12-07D300282133 30028213613.9 ppb
2022-12-07D300282138 30028214113.6 ppb
2022-12-07D300282730 30028273213.9 ppb
2022-12-08D300283547 30028354910.4 ppb
2022-12-08D300283566 30028356811.1 ppb
2022-12-09D300284348 30028435010.8 ppb
2023-03-06D300316509 3003165119.46 ppb
2023-03-06D300316513 30031651512.0 ppb
2023-03-06D300316517 3003165197.58 ppb
2023-03-07D300317097 3003171009.97 ppb
2023-03-07D300317102 30031710510.0 ppb
2023-03-07D300317505 3003175087.80 ppb
2023-03-07D300317510 30031751211.0 ppb
2023-03-07D300317514 3003175166.69 ppb
2023-03-08D300318389 3003183917.11 ppb
2023-03-08D300318393 3003183957.35 ppb
2023-03-09D300319243 30031924510.8 ppb
2023-03-10D300319398 3003194008.92 ppb
2023-06-05D300358943 30035894511.6 ppb
2023-06-05D300358947 30035894913.4 ppb
2023-06-05D300358951 30035895311.5 ppb
2023-06-05D300358955 30035895710.6 ppb
2023-06-06D300358988 3003589919.95 ppb
2023-06-06D300358993 30035899611.7 ppb
2023-06-06D300359847 3003598509.63 ppb
2023-06-06D300359852 3003598545.77 ppb
2023-06-07D300360865 30036086714.9 ppb
2023-06-08D300361983 30036198512.4 ppb
2023-06-08D300361987 30036198915.7 ppb
2023-06-09D300362721 3003627239.19 ppb
2023-09-11D300412854 30041285613.4 ppb
2023-09-11D300412858 30041286012.4 ppb
2023-09-12D300413093 30041309614.1 ppb
2023-09-12D300413098 3004131013.88 ppb
2023-09-12D300413568 3004135716.90 ppb
2023-09-12D300413573 30041357514.7 ppb
2023-09-12D300413577 30041357911.4 ppb
2023-09-12D300413581 3004135837.29 ppb
2023-09-13D300414470 30041447210.8 ppb
2023-09-13D300414474 30041447612.4 ppb
2023-09-14D300415299 3004153018.57 ppb
2023-09-15D300416083 3004160859.00 ppb
2023-12-04D300454311 3004543139.54 ppb
2023-12-04D300454315 30045431712.4 ppb
2023-12-04D300454322 30045432411.0 ppb
2023-12-05D300454448 3004544518.65 ppb
2023-12-05D300454453 30045445610.4 ppb
2023-12-05D300454954 3004549576.84 ppb
2023-12-05D300454962 3004549649.96 ppb
2023-12-05D300454972 3004549746.30 ppb
2023-12-06D300455828 3004558307.14 ppb
2023-12-06D300455832 3004558347.68 ppb
2023-12-07D300456845 3004568479.52 ppb
2023-12-08D300457513 30045751511.3 ppb