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EWG's Tap Water Database — 2021 UPDATE

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Lindane

San Francisco City Water System

Lindane is a neurotoxic and carcinogenic insecticide phased out of agricultural use in the U.S. since 2002. It is prescribed to treat lice or scabies, although safer alternatives are available.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND170ND
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.032 ppb

The EWG Health Guideline of 0.032 ppb for lindane 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 cancer.

EPA Maximum Contaminant
Level (MCL) 0.2 ppb

The legal limit for lindane, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

All test results

Date Lab ID Result
2018-01-119590-007-1115ND
2018-03-069590-004-1031ND
2018-03-069590-008-0914ND
2018-03-089590-006-0925ND
2018-04-179590-007-1055ND
2018-06-129590-004-1058ND
2018-06-129590-008-0930ND
2018-06-129590-006-1012ND
2018-07-179590-007-0519ND
2018-08-309590-007-0630ND
2018-09-189590-006-0945ND
2018-09-189590-004-0855ND
2018-09-189590-008-1025ND
2018-10-179590-007-0730ND
2018-12-119590-006-0915ND
2018-12-119590-004-0845ND
2018-12-119590-008-1045ND