Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

Monochlorobenzene (chlorobenzene)

Sunny Slope Water Company

Monochlorobenzene is used as a solvent for pesticides, a degreasing agent and an intermediate for manufacturing other chemicals. It causes liver and kidney damage in studies of laboratory animals.

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
2013ND50ND
2014ND40ND
2015ND50ND
2016ND50ND
2017ND50ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 70 ppb

The EWG Health Guideline of 70 ppb for monochlorobenzene was defined 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 100 ppb

The legal limit for monochlorobenzene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1960s.

ppb = parts per billion

All test results

Date Lab ID Result
2012-03-149588-004-1000ND
2012-06-199588-012-0900ND
2012-09-129588-017-0950ND
2012-09-129588-003-0930ND
2012-11-299588-006-0945ND
2013-03-199588-004-0940ND
2013-06-269588-012-0855ND
2013-09-039588-017-1007ND
2013-09-039588-003-0955ND
2013-12-179588-006-0900ND
2014-03-039588-004-0930ND
2014-06-039588-012-0940ND
2014-09-169588-003-0925ND
2014-12-019588-006-0910ND
2015-03-199588-004-0910ND
2015-06-099588-012-1025ND
2015-06-099588-017-1010ND
2015-09-029588-003-0935ND
2015-12-099588-006-0910ND
2016-03-109588-004-0915ND
2016-06-089588-012-1005ND
2016-06-089588-017-1030ND
2016-09-129588-003-0930ND
2016-12-029588-006-1040ND
2017-03-069588-004-1040ND
2017-06-309588-012-1310ND
2017-06-309588-017-1335ND
2017-09-219588-003-0930ND
2017-12-289588-006-0835ND