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EWG's Tap Water Database — 2019 UPDATE

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2,4-D

Sun Valley Gid

NOTE: Sun Valley Gid purchases water from Truckee Meadows Water Authority which is required to test for 2,4-d. Sample information shown below was taken by Truckee Meadows Water Authority.

2,4-D (2,4-dichlorophenoxyacetic acid) is a herbicide that can be applied directly to GMO corn and soy plants engineered to withstand this toxic chemical. Americans' exposures to 2,4-D from food and drinking water will likely increase in years to come as farmers plant more of these GMO crops. Read More.

2,4-D is an endocrine disruptor that interferes with thyroid hormones. The International Agency for Research on Cancer classifies 2,4-D as possibly carcinogenic to humans. In occupational studies, farmers exposed to 2,4-D tended to have higher incidences of damaged and malformed sperm. Laboratory animals exposed to 2,4-D during gestation are born underdeveloped and are more likely to have birth defects.

 

168

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND180ND
2013ND210ND
2014ND260ND
20150.0147 ppb192ND - 0.140 ppb
20160.00719 ppb321ND - 0.230 ppb
20170.0301 ppb522ND - 0.180 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 20 ppb

The EWG Health Guideline of 20 ppb for 2,4-D 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for 2,4-D, established in 1991, was based on toxicity studies in laboratory animals conducted in the 1980s. This limit may not fully protect against harm to the nervous system, harm to the thyroid, and hormone disruption.

ppb = parts per billion

All test results

NOTE: Sun Valley Gid purchases water from Truckee Meadows Water Authority which is required to test for 2,4-d. Sample information shown below was taken by Truckee Meadows Water Authority.

Date Lab ID Result
2012-04-020412-01SND
2012-04-220412-06SND
2012-05-160512-36SND
2012-05-160512-35SND
2012-06-060612-09SND
2012-06-190612-26SND
2012-06-190612-27SND
2012-06-260612-32SND
2012-06-260612-33SND
2012-07-110712-09SND
2012-07-110712-07SND
2012-07-110712-10SND
2012-07-110712-08SND
2012-08-080812-01SND
2012-08-080812-02SND
2012-09-200912-22SND
2012-09-200912-23SND
2012-09-240912-24SND
2013-03-130313-03SND
2013-05-080513-16ND
2013-05-080513-17ND
2013-05-080513-19ND
2013-05-080513-18-SOCND
2013-06-180613-20ND
2013-06-240613-74SND
2013-06-250613-66-SND
2013-06-250613-37-SND
2013-06-250613-54SND
2013-07-080713-01ND
2013-07-080713-03ND
2013-07-080713-02ND
2013-07-080713-04ND
2013-09-050913-01ND
2013-09-050913-02ND
2013-09-180913-13-SOCND
2013-09-180913-12-SOCND
2013-09-180913-11ND
2013-10-091013-11ND
2013-11-061113-03ND
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
2015-06-081506017-010.140 ppb
2015-06-081506018-010.140 ppb
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
2015-11-021511022-01EURND
2015-11-161511023-01EURND
2016-02-171602016-01EURND
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
2016-10-121610015-01EUR0.230 ppb
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
2017-06-010.0301 ppb*
2017-07-111707003-01EURND
2017-07-111707002-01EURND
2017-07-111707005-01EURND
2017-07-111707004-01EURND
2017-07-121707010-01EURND
2017-07-121707012-01EUR0.180 ppb
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

* Sample result is taken from the system's CCR report.