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EWG's Tap Water Database — 2021 UPDATE

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Glyphosate

City of Phoenix

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

 

103

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
2014ND220ND
2015ND30ND
2016ND20ND
2017ND440ND
2018ND250ND
2019ND70ND

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
2014-01-064010287-01SND
2014-01-0820141080634SND
2014-01-15201401150539SND
2014-01-15201401170164SND
2014-01-16201401160570SND
2014-01-16201401170155SND
2014-01-21201401210421SND
2014-01-21201401210439SND
2014-02-18201402180231SND
2014-02-19201402190364SND
2014-02-26201402260765SND
2014-04-072014020064ND
2014-07-012014040548ND
2014-07-01201407010331SND
2014-07-022014040617ND
2014-07-082014041930ND
2014-07-092014041942ND
2014-07-152014043227ND
2014-07-162014043581ND
2014-07-222014045306ND
2014-07-232014045317ND
2014-07-232014045329ND
2015-02-032015001908ND
2015-07-082015042617ND
2015-10-062015065308ND
2016-01-052015086652ND
2016-07-052016041841ND
2017-01-042016086853ND
2017-01-042016086875ND
2017-01-042016086887ND
2017-01-042016087229ND
2017-01-04201701040662SND
2017-01-052016087242ND
2017-01-102017001685ND
2017-01-102017001702ND
2017-01-112017001848ND
2017-01-112017001862ND
2017-01-172017002394ND
2017-01-172017002409ND
2017-01-182017002429ND
2017-01-182017002442ND
2017-01-252017004341ND
2017-01-252017004357ND
2017-02-012017006541ND
2017-02-082017008744ND
2017-02-222017012578ND
2017-03-222017020007ND
2017-04-272017031721ND
2017-04-272017031734ND
2017-07-05201707050526SND
2017-07-112017052491ND
2017-07-112017052504ND
2017-07-122017052522ND
2017-07-122017052536ND
2017-07-132017053182ND
2017-07-132017053192ND
2017-07-132017053203ND
2017-07-132017053215ND
2017-07-132017053227ND
2017-07-182017054884ND
2017-07-192017054933ND
2017-07-262017057102ND
2017-07-272017057072ND
2017-07-272017057084ND
2017-08-012017058953ND
2017-08-012017058965ND
2017-08-022017059089ND
2017-08-022017059103ND
2017-08-032017060092ND
2017-10-312017083708ND
2017-11-072017084680SOCND
2018-04-032018021555ND
2018-04-042018021574ND
2018-04-042018021584ND
2018-04-102018023131ND
2018-04-122018023242ND
2018-04-172018024519ND
2018-04-192018024619ND
2018-04-192018024631ND
2018-04-262018025991ND
2018-04-262018026003ND
2018-05-092018031003ND
2018-07-182018048385ND
2018-07-262018050953ND
2018-10-022018067808ND
2018-10-032018069391ND
2018-10-102018070652ND
2018-10-102018070664ND
2018-10-112018070109ND
2018-10-162018071802ND
2018-10-182018071308ND
2018-10-242018073943ND
2018-10-252018073811ND
2018-10-302018074906ND
2018-10-302018074939ND
2018-11-292018082942ND
2019-01-162019002376ND
2019-01-292019005837ND
2019-04-162019027805ND
2019-04-242019029607ND
2019-07-252019052894ND
2019-11-052019082065ND
2019-11-082019084804ND