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EWG's Tap Water Database — 2021 UPDATE

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Glyphosate

Truckee Meadows Water Authority

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.

MORE ABOUT THIS CONTAMINANT

 

199

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
2014ND260ND
2015ND170ND
2016ND310ND
2017ND510ND
2018ND410ND
2019ND330ND

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
2014-04-220414-13-SND
2014-04-220414-12-SND
2014-04-220414-16-SND
2014-04-230414-17-SND
2014-06-090614-06-SND
2014-06-090614-07-SND
2014-06-170614-11-SND
2014-06-170614-10-SND
2014-06-170614-09-SND
2014-06-170614-12-SND
2014-06-170614-13-SND
2014-06-170614-14-SND
2014-07-290714-32ND
2014-07-290714-33-SND
2014-07-290714-34-SND
2014-07-290714-35-SND
2014-07-290714-36-SND
2014-07-290714-37-SND
2014-07-300714-47-SND
2014-07-300714-46-SND
2014-07-300714-45-SND
2014-07-300714-48-SND
2014-09-020914-07-SND
2014-09-020914-06-SND
2014-09-020914-05-SND
2014-09-020914-06-W18ND
2015-06-081506017-01ND
2015-06-081506018-01ND
2015-06-111506027-SOCND
2015-06-171506035-01ND
2015-06-171506036-01ND
2015-06-171506037-01ND
2015-06-171506038-01ND
2015-06-231506055-01ND
2015-06-231506061-01ND
2015-07-221507046-EURND
2015-07-221507045-EURND
2015-08-191508047-EURND
2015-08-191508048-EURND
2015-08-191508050-EURND
2015-08-191508051-EURND
2015-08-191508053-EURND
2015-08-191508054-EURND
2016-03-011603002-01EURND
2016-05-311605028-01EURND
2016-05-311605025-01EURND
2016-05-311605026-01EURND
2016-05-311605027-01EURND
2016-06-011606001-01EURND
2016-06-061606010-01EURND
2016-06-061606013-01EURND
2016-07-191607022-01EURND
2016-07-191607021-01EURND
2016-07-191607026-01EURND
2016-07-191607023-01EURND
2016-07-191607024-01EURND
2016-07-191607025-01EURND
2016-08-241608035-01EURND
2016-08-241608034-01EURND
2016-08-241608033-01EURND
2016-08-251608036-01EURND
2016-09-131609006-01EURND
2016-09-131609007-01EURND
2016-09-131609008-01EURND
2016-09-131609009-01EURND
2016-09-221609024-01EURND
2016-10-121610015-01EURND
2016-10-121610014-01EURND
2016-10-121610012-01EURND
2016-10-121610011-01EURND
2016-10-121610016-01EURND
2016-10-131610017-01EURND
2016-10-181610027-01EURND
2016-10-251610039-01EURND
2017-01-111701006-01EURND
2017-03-081703010-01EURND
2017-03-081703009-01EURND
2017-03-081703008-01EURND
2017-05-021705003-01EURND
2017-05-021705004-01EURND
2017-05-031705010-01EURND
2017-05-031705009-01EURND
2017-05-151705022-01EURND
2017-05-151705023-01EURND
2017-05-151705025-01EURND
2017-05-151705024-01EURND
2017-05-251705042-01EURND
2017-05-251705041-01EURND
2017-07-111707003-01EURND
2017-07-111707002-01EURND
2017-07-111707005-01EURND
2017-07-111707004-01EURND
2017-07-121707010-01EURND
2017-07-121707012-01EURND
2017-07-121707008-01EURND
2017-07-181707020-01EURND
2017-07-181707021-01EURND
2017-07-181707022-01EURND
2017-07-181707023-01EURND
2017-08-161708013-01EURND
2017-08-161708014-01EURND
2017-09-121708026-02EURND
2017-09-121708028-02EURND
2017-09-121708027-02EURND
2017-09-121708029-02EURND
2017-09-121708025-02EURND
2017-10-101710015-01EURND
2017-10-101710009-01EURND
2017-10-101710014-01EURND
2017-10-101710016-01EURND
2017-10-101710017-01EURND
2017-10-101710018-01EURND
2017-10-251710032-01EURND
2017-10-251710033-01EURND
2017-10-251710035-01EURND
2017-10-251710036-01EURND
2017-10-311710048-01EURND
2017-10-311710049-01EURND
2017-11-011711001-01EURND
2017-11-171712011-01EURND
2017-11-171712010-01EURND
2017-11-171712009-01EURND
2017-12-041712032-01EURND
2017-12-051712023-01EURND
2017-12-051712021-01EURND
2018-01-231801009-01EURND
2018-01-231801010-01EURND
2018-02-011802001-01EURND
2018-02-011802003-01EURND
2018-02-061802006-01EURND
2018-02-071802007-01EURND
2018-04-041804005-01WECND
2018-04-041804006-01EURND
2018-04-041804007-01EURND
2018-04-091804011-01WECND
2018-04-091804012-01WECND
2018-04-101804036-01EURND
2018-04-111804017-01WECND
2018-04-111804018-01WECND
2018-04-111804019-01WECND
2018-04-241804027-01WECND
2018-04-251804025-01WECND
2018-04-261804044-01WECND
2018-05-021805008-01EURND
2018-05-021805009-01EURND
2018-05-021805010-01EURND
2018-05-231805041-01WECND
2018-06-051806009-01WECND
2018-07-091807007-01WECND
2018-07-091807008-01WECND
2018-07-241807025-01WECND
2018-08-071808008-01WECND
2018-08-071808009-01WECND
2018-08-071808010-01WECND
2018-08-071808011-01WECND
2018-08-071808012-01WECND
2018-08-071808013-01WECND
2018-08-141808024-01WECND
2018-08-141808025-01WECND
2018-10-101810015-02WECND
2018-10-241810032-01WECND
2018-10-241810033-01WECND
2018-10-241810035-01WECND
2018-10-241810036-01WECND
2018-10-241810037-01WECND
2018-10-241810038-01WECND
2019-01-091901012-02WECND
2019-01-091901013-02WECND
2019-01-161901017-02WECND
2019-02-051902001-01WECND
2019-02-261902019-01WECND
2019-04-081904004-01WECND
2019-05-071905007-01WECND
2019-05-071905008-01WECND
2019-05-291905027-01WECND
2019-06-191906013-01WECND
2019-06-191906014-01WECND
2019-06-191906015-01WECND
2019-06-191906016-01WECND
2019-06-271906021-01WECND
2019-06-271906022-01WECND
2019-06-271906023-01WECND
2019-07-011907003-01WECND
2019-07-011907004-01WECND
2019-07-011907005-01WECND
2019-07-011907006-01WECND
2019-07-011907012-01WECND
2019-07-091907014-02WECND
2019-07-251907045-01WECND
2019-07-291907046-01WECND
2019-07-301907048-01WECND
2019-08-061908002-01WECND
2019-08-061908004-01WECND
2019-08-061908007-01WECND
2019-08-071908008-02WECND
2019-08-071908009-02WECND
2019-08-071908010-02WECND
2019-10-011910004-01WECND
2019-10-011910006-01WECND