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EWG's Tap Water Database — 2021 UPDATE

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Cyanazine (Bladex)

Metropolitan Water District of So. Cal.

Cyanazine, a cancer-causing chemical related to the herbicide atrazine, has been phased out of use in the U.S. since 1995. Cyanazine has been also linked to birth defects and damage to the central nervous system.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015ND100ND
2016N/A00N/A
2017N/A00N/A
2018ND100ND
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 1 ppb

The EWG Health Guideline of 1 ppb for cyanazine was defined by the Environmental Protection Agency as a lifetime health-based limit for effects other than cancer. This health guideline protects against .

ppb = parts per billion

All test results

Date Lab ID Result
2015-04-089588-005-0830ND
2015-04-089588-013-1020ND
2015-04-089588-003-1000ND
2015-04-089588-026-1047ND
2015-04-089588-020-1100ND
2015-11-039588-003-1030ND
2015-11-039588-005-0925ND
2015-11-039588-026-0837ND
2015-11-039588-013-1015ND
2015-11-059588-020-1020ND
2018-04-029588-003-1344ND
2018-04-029588-005-1229ND
2018-04-029588-020-1124ND
2018-04-039588-026-1528ND
2018-04-099588-013-0805ND
2018-10-019588-020-1015ND
2018-10-019588-003-1140ND
2018-10-029588-013-1010ND
2018-10-029588-005-1115ND
2018-10-029588-026-0950ND