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EWG's Tap Water Database — 2019 UPDATE

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Glyphosate

City of Gilroy

Glyphosate is the weedkiller marketed as Roundup. The state of California classifies glyphosate as a chemical known to cause cancer. Read More.

Glyphosate is classified as a probable human carcinogen by the International Agency for Research on Cancer and has been linked to increased risk of non-Hodgkin's lymphoma in people. Exposure to glyphosate during pregnancy may affect fetal development.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND180ND
2013N/A00N/A
2014N/A00N/A
2015ND90ND
2016N/A00N/A
2017N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 5 ppb

The EWG Health Guideline of 5 ppb for glyphosate was defined by EWG as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

EPA Maximum Contaminant
Level (MCL) 700 ppb

The legal limit for glyphosate, established in 1992, was based on a toxicity study in laboratory animals conducted in the 1980s. This limit does not account for the cancer risks of glyphosate and does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2012-05-215810-004-1045ND
2012-05-215810-002-1135ND
2012-05-215810-006-1315ND
2012-05-215810-001-0850ND
2012-05-225810-007-0745ND
2012-05-225810-008-0955ND
2012-05-225810-009-1035ND
2012-05-225810-010-1115ND
2012-05-225810-011-0835ND
2012-08-225810-008-1050ND
2012-08-225810-006-1325ND
2012-08-225810-009-1110ND
2012-08-225810-004-1000ND
2012-08-225810-011-1300ND
2012-08-225810-002-1025ND
2012-08-225810-001-0845ND
2012-08-235810-010-0855ND
2012-08-235810-007-0825ND
2015-05-205810-006-0945ND
2015-05-205810-007-1300ND
2015-05-205810-008-1025ND
2015-05-205810-009-1100ND
2015-05-205810-010-0810ND
2015-05-215810-004-1250ND
2015-05-215810-011-0955ND
2015-05-215810-002-1010ND
2015-05-215810-001-0800ND