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EWG's Tap Water Database — 2021 UPDATE

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Monochlorobenzene (chlorobenzene)

Rio Rancho Water and Waterworks Services

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND120ND
2015N/A00N/A
2016N/A00N/A
2017ND90ND
2018ND10ND
2019N/A00N/A

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
2014-02-262014006958ND
2014-02-262014006954ND
2014-02-262014006952ND
2014-02-262014006946ND
2014-02-262014006949ND
2014-02-262014006950ND
2014-02-262014006951ND
2014-02-262014006953ND
2014-02-262014006948ND
2014-03-202014009391ND
2014-09-112014029131ND
2014-09-112014029132ND
2017-02-082017003717ND
2017-02-082017003723ND
2017-02-082017003719ND
2017-02-082017003722ND
2017-02-082017003718ND
2017-02-082017003720ND
2017-02-082017003721ND
2017-10-272017030984ND
2017-10-272017030983ND
2018-08-162018022994ND