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EWG's Tap Water Database — 2021 UPDATE

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Monochloroacetic acid

Wilmington Water Department

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.

MORE ABOUT THIS CONTAMINANT

 

190

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.340 ppb101ND - 3.40 ppb
20153.76 ppb3823ND - 10.9 ppb
20161.43 ppb2712ND - 5.30 ppb
20171.62 ppb3917ND - 5.60 ppb
20181.69 ppb3619ND - 5.50 ppb
20191.09 ppb4014ND - 5.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 53 ppb

The EWG Health Guideline of 53 ppb for monochloroacetic acid was proposed in 2020 by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk.. This health guideline protects against system toxicity.

ppb = parts per billion

All test results

Date Lab ID Result
2014-04-011079443001 HAA5ND
2014-04-011079443002 HAA53.40 ppb
2014-04-011079443003 HAA5ND
2014-04-011079443004 HAA5ND
2014-04-011079443006 HAA5ND
2014-04-011079443007 HAA5ND
2014-04-011079443008 HAA5ND
2014-04-011079443009 HAA5ND
2014-04-011079443010 HAA5ND
2014-04-011079443011 HAA5ND
2015-01-052047942001 HAA5ND
2015-01-052047942002 HAA5ND
2015-01-052047942003 HAA5ND
2015-01-052047942004 HAA5ND
2015-01-052047942005 HAA5ND
2015-01-052047942006 HAA5ND
2015-01-052047942007 HAA5ND
2015-01-052047942008 HAA5ND
2015-01-052047942009 HAA5ND
2015-04-142065266001 HAA5ND
2015-04-142065266002 HAA5ND
2015-04-142065266003 HAA55.10 ppb
2015-04-142065266004 HAA54.60 ppb
2015-04-142065266005 HAA53.90 ppb
2015-04-142065266006 HAA55.00 ppb
2015-04-142065266007 HAA55.70 ppb
2015-04-142065266008 HAA5ND
2015-04-142065266009 HAA55.40 ppb
2015-04-142065266010 HAA54.60 ppb
2015-07-082082331001 HAA57.30 ppb
2015-07-082082331002 HAA510.4 ppb
2015-07-082082331003 HAA510.9 ppb
2015-07-082082331004 HAA510.7 ppb
2015-07-082082331005 HAA58.70 ppb
2015-07-082082331006 HAA59.90 ppb
2015-07-082082331007 HAA57.80 ppb
2015-07-082082331008 HAA54.20 ppb
2015-07-082082331009 HAA59.50 ppb
2015-07-082082331010 HAA55.90 ppb
2015-10-072100950001 HAA53.00 ppb
2015-10-072100950003 HAA5ND
2015-10-072100950004 HAA54.50 ppb
2015-10-072100950005 HAA53.80 ppb
2015-10-072100950006 HAA54.60 ppb
2015-10-072100950007 HAA5ND
2015-10-072100950008 HAA53.40 ppb
2015-10-072100950009 HAA5ND
2015-10-072100950010 HAA54.10 ppb
2016-04-042134195001 HAA5ND
2016-04-042134195003 HAA5ND
2016-04-042134195004 HAA52.10 ppb
2016-04-042134195005 HAA5ND
2016-04-042134195006 HAA5ND
2016-04-042134195007 HAA52.20 ppb
2016-04-042134195008 HHA5ND
2016-04-042134195009 HAA5ND
2016-04-042134195010 HAA5ND
2016-07-0521566340012.30 ppb
2016-07-052156634003ND
2016-07-0521566340043.70 ppb
2016-07-0521566340052.90 ppb
2016-07-0521566340065.30 ppb
2016-07-0521566340074.40 ppb
2016-07-0521566340083.20 ppb
2016-07-052156634009ND
2016-07-0521566340103.90 ppb
2016-10-032179446001 HAA5ND
2016-10-032179446002 HAA5ND
2016-10-032179446003 HAA5ND
2016-10-032179446004 HAA5ND
2016-10-032179446005 HAA54.30 ppb
2016-10-032179446006 HAA5ND
2016-10-032179446007 HAA52.30 ppb
2016-10-032179446008 HAA5ND
2016-10-032179446009 HAA52.10 ppb
2017-01-042200080001 HAA5ND
2017-01-042200080002 HAA5ND
2017-01-042200080003 HAA5ND
2017-01-042200080004 HAA5ND
2017-01-042200080005 HAA5ND
2017-01-042200080006 HAA52.30 ppb
2017-01-042200080007 HAA5ND
2017-01-042200080008 HAA5ND
2017-01-042200080009 HAA5ND
2017-04-042220361001 HAA5ND
2017-04-042220361003 HAA5ND
2017-04-042220361004 HAA5ND
2017-04-042220361005 HAA5ND
2017-04-042220361006 HAA5ND
2017-04-042220361007 HAA52.60 ppb
2017-04-042220361008 HAA5ND
2017-04-042220361009 HAA5ND
2017-04-042220361010 HAA5ND
2017-04-052220361011 HAA5ND
2017-07-182247510001 HAA53.00 ppb
2017-07-182247510004 HAA5ND
2017-07-182247510006 HAA54.10 ppb
2017-07-182247510008 HAA55.00 ppb
2017-07-182247510010 HAA54.20 ppb
2017-07-182247510012 HAA54.30 ppb
2017-07-182247510014 HAA53.60 ppb
2017-07-182247510016 HAA52.20 ppb
2017-07-182247510018 HAA54.70 ppb
2017-07-182247510020 HAA53.20 ppb
2017-10-032267296001 HAA5ND
2017-10-032267296004 HAA5ND
2017-10-032267296006 HAA54.10 ppb
2017-10-032267296008 HAA52.30 ppb
2017-10-032267296010 HAA53.60 ppb
2017-10-032267296012 HAA55.60 ppb
2017-10-032267296014 HAA53.90 ppb
2017-10-032267296016 HAA4ND
2017-10-032267296018 HHA54.40 ppb
2017-10-032267296020 HAA5ND
2018-01-032287060001 HAA5ND
2018-01-032287060004 HAA54.80 ppb
2018-01-032287060006 HAA55.50 ppb
2018-01-032287060008 HAA5ND
2018-01-032287060010 HAA5ND
2018-01-032287060012 HAA52.00 ppb
2018-01-032287060014 HAA5ND
2018-01-032287060016 HAA5ND
2018-01-032287060018 HAA54.50 ppb
2018-04-032306959001 HAA5ND
2018-04-032306959003 HAA5ND
2018-04-032306959005 HAA5ND
2018-04-032306959007 HAA5ND
2018-04-032306959009 HAA5ND
2018-04-032306959011 HAA5ND
2018-04-032306959013 HAA5ND
2018-04-032306959015 HAA5ND
2018-04-032306959017 HAA5ND
2018-07-022324450001 HAA5ND
2018-07-022324450003 HAA5ND
2018-07-022324450004 HAA53.30 ppb
2018-07-022324450005 HAA52.20 ppb
2018-07-022324450006 HAA52.20 ppb
2018-07-022324450007 HAA52.80 ppb
2018-07-022324450008 HAA52.50 ppb
2018-07-022324450009 HAA5ND
2018-07-022324450010 HAA52.60 ppb
2018-10-022342141001 HAA52.00 ppb
2018-10-022342141004 HAA52.90 ppb
2018-10-022342141006 HAA53.10 ppb
2018-10-022342141008 HAA52.80 ppb
2018-10-022342141010 HAA53.90 ppb
2018-10-022342141012 HAA54.80 ppb
2018-10-022342141014 HAA53.00 ppb
2018-10-022342141016 HAA52.10 ppb
2018-10-022342141018 HAA53.80 ppb
2019-01-033009447001 HAA5ND
2019-01-033009447004 HAA54.40 ppb
2019-01-033009447006 HAA52.80 ppb
2019-01-033009447008 HAA52.80 ppb
2019-01-033009447010 HAA53.00 ppb
2019-01-033009447012 HAA55.20 ppb
2019-01-033009447014 HAA53.00 ppb
2019-01-033009447016 HAA54.00 ppb
2019-01-033009447018 HAA53.40 ppb
2019-01-033009447020 HAA52.40 ppb
2019-04-023026194001 HAA5ND
2019-04-023026194003 HAA5ND
2019-04-023026194004 HAA5ND
2019-04-023026194005 HAA5ND
2019-04-023026194006 HAA5ND
2019-04-023026194007 HAA5ND
2019-04-023026194008 HAA5ND
2019-04-023026194009 HAA5ND
2019-04-023026194010 HAA5ND
2019-04-023026194011 HAA5ND
2019-07-013043203001 HAA5ND
2019-07-013043203004 HAA5ND
2019-07-013043203006 HAA5ND
2019-07-013043203008 HAA5ND
2019-07-013043203010 HAA4ND
2019-07-013043203012 HAA5ND
2019-07-013043203014 HAA5ND
2019-07-013043203016 HAA5ND
2019-07-013043203018 HAA5ND
2019-07-013043203020 HAA5ND
2019-10-023061934001 HAA5ND
2019-10-023061934004 HAA5ND
2019-10-023061934006 HAA52.50 ppb
2019-10-023061934008 HAA52.20 ppb
2019-10-023061934010 HAA52.30 ppb
2019-10-023061934012 HAA52.80 ppb
2019-10-023061934014 HAA5ND
2019-10-023061934016 HAA5ND
2019-10-023061934018 HAA52.60 ppb
2019-10-023061934020 HAA5ND