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EWG's Tap Water Database — 2021 UPDATE

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Arsenic

City of Clovis

Arsenic is a potent carcinogen and common contaminant in drinking water. Arsenic causes thousands of cases of cancer each year in the U.S. Click here to read more about arsenic.

MORE ABOUT THIS CONTAMINANT

 

185

Samples

0

Samples exceeding legal limit (MCL)

46

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.277 ppb313ND - 3.80 ppb
20150.716 ppb319ND - 3.20 ppb
20160.248 ppb313ND - 3.10 ppb
20170.488 ppb326ND - 3.60 ppb
20181.77 ppb2919ND - 3.90 ppb
20190.487 ppb316ND - 2.90 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.004 ppb

The EWG Health Guideline of 0.004 ppb for arsenic 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 cancer.

EPA Maximum Contaminant
Level (MCL) 10 ppb

The legal limit for arsenic, established in 2001, was based on costs for arsenic removal, as calculated at the time that the standard was set. This limit does not fully protect against the risk of cancer due to arsenic exposure.

ppb = parts per billion

All test results

Date Lab ID Result
2014-08-065810-067-0900ND
2014-09-025810-074-1310ND
2014-09-045810-048-1210ND
2014-09-045810-072-1030ND
2014-09-085810-033-0840ND
2014-09-085810-034-0930ND
2014-09-105810-031-1100ND
2014-09-105810-032-10152.30 ppb
2014-09-105810-082-1015ND
2014-09-115810-012-0945ND
2014-09-115810-014-0845ND
2014-09-125810-005-0949ND
2014-09-125810-019-0851ND
2014-09-125810-035-10242.50 ppb
2014-09-125810-036-1130ND
2014-09-125810-040-0925ND
2014-09-155810-018-0822ND
2014-09-155810-049-10423.80 ppb
2014-09-155810-050-0947ND
2014-09-155810-054-0939ND
2014-09-155810-070-1025ND
2014-09-175810-046-0834ND
2014-09-175810-068-0857ND
2014-09-175810-076-0957ND
2014-09-185810-024-1050ND
2014-09-185810-026-0954ND
2014-09-195810-025-1036ND
2014-09-225810-016-1017ND
2014-09-235810-020-1106ND
2014-09-235810-077-1040ND
2014-09-305810-052-1105ND
2015-08-065810-067-1015ND
2015-09-035810-018-0846ND
2015-09-095810-005-1044ND
2015-09-095810-019-1015ND
2015-09-095810-032-0936ND
2015-09-095810-033-0758ND
2015-09-095810-034-0816ND
2015-09-095810-040-1001ND
2015-09-095810-046-1028ND
2015-09-115810-020-09552.60 ppb
2015-09-115810-048-0920ND
2015-09-115810-070-10452.30 ppb
2015-09-145810-026-1031ND
2015-09-155810-014-0800ND
2015-09-155810-052-0911ND
2015-09-155810-077-0851ND
2015-09-155810-082-0830ND
2015-09-165810-012-0815ND
2015-09-165810-031-0850ND
2015-09-165810-035-1055ND
2015-09-165810-036-1026ND
2015-09-165810-049-09142.60 ppb
2015-09-165810-050-0830ND
2015-09-165810-074-09152.60 ppb
2015-09-165810-076-1033ND
2015-09-185810-024-0922ND
2015-09-185810-054-10313.20 ppb
2015-09-215810-072-09452.50 ppb
2015-09-235810-068-09472.10 ppb
2015-09-255810-025-12342.20 ppb
2015-09-285810-016-10232.10 ppb
2016-08-055810-067-0900ND
2016-09-085810-005-0907ND
2016-09-085810-014-0800ND
2016-09-085810-019-1020ND
2016-09-085810-024-0928ND
2016-09-085810-025-10352.50 ppb
2016-09-085810-026-0856ND
2016-09-085810-040-0900ND
2016-09-085810-046-0756ND
2016-09-085810-068-0928ND
2016-09-085810-070-08152.10 ppb
2016-09-085810-077-0951ND
2016-09-095810-012-0950ND
2016-09-095810-018-0730ND
2016-09-095810-031-0847ND
2016-09-095810-032-0815ND
2016-09-095810-033-0730ND
2016-09-095810-034-0753ND
2016-09-095810-035-1038ND
2016-09-095810-036-1126ND
2016-09-095810-048-0900ND
2016-09-095810-052-0908ND
2016-09-095810-076-0925ND
2016-09-095810-082-0845ND
2016-09-125810-050-0955ND
2016-09-125810-054-1030ND
2016-09-125810-074-1103ND
2016-09-145810-016-09233.10 ppb
2016-09-145810-020-0805ND
2016-09-145810-049-0900ND
2016-09-215810-072-1100ND
2017-08-035810-067-0850ND
2017-09-075810-050-0650ND
2017-09-075810-070-0707ND
2017-09-075810-076-1130ND
2017-09-085810-054-07252.70 ppb
2017-09-085810-074-0700ND
2017-09-115810-005-07142.20 ppb
2017-09-115810-035-0635ND
2017-09-115810-036-0648ND
2017-09-125810-020-0642ND
2017-09-125810-032-0700ND
2017-09-125810-033-0745ND
2017-09-125810-034-0810ND
2017-09-125810-048-0950ND
2017-09-125810-068-07012.10 ppb
2017-09-125810-082-0935ND
2017-09-135810-018-1030ND
2017-09-135810-031-0735ND
2017-09-135810-049-09003.60 ppb
2017-09-145810-012-0850ND
2017-09-145810-019-0740ND
2017-09-145810-024-12252.50 ppb
2017-09-185810-016-1010ND
2017-09-185810-040-09162.50 ppb
2017-09-185810-052-0815ND
2017-09-185810-077-0945ND
2017-09-205810-025-1330ND
2017-09-205810-026-1250ND
2017-09-205810-046-1115ND
2017-09-205810-072-1000ND
2017-10-265810-014-0820ND
2017-11-035810-014-0815ND
2018-09-055810-018-1025ND
2018-09-065810-005-0724ND
2018-09-065810-012-0750ND
2018-09-065810-019-08452.60 ppb
2018-09-065810-031-06542.70 ppb
2018-09-065810-032-09402.10 ppb
2018-09-065810-033-09252.30 ppb
2018-09-065810-040-10152.30 ppb
2018-09-065810-049-08493.90 ppb
2018-09-065810-054-08213.00 ppb
2018-09-065810-068-07373.30 ppb
2018-09-065810-070-07432.70 ppb
2018-09-065810-074-08562.40 ppb
2018-09-075810-014-09152.30 ppb
2018-09-075810-024-07262.80 ppb
2018-09-075810-034-07402.30 ppb
2018-09-075810-035-0749ND
2018-09-075810-046-08003.30 ppb
2018-09-075810-048-0810ND
2018-09-075810-050-0707ND
2018-09-075810-082-0710ND
2018-09-115810-025-11283.20 ppb
2018-09-115810-026-0722ND
2018-09-115810-077-1046ND
2018-09-125810-016-09283.50 ppb
2018-09-125810-036-08052.10 ppb
2018-09-125810-052-09002.00 ppb
2018-09-125810-076-0822ND
2018-09-195810-072-10262.50 ppb
2019-07-035810-024-0726ND
2019-07-035810-040-1005ND
2019-07-035810-070-0751ND
2019-07-055810-014-0814ND
2019-07-055810-035-0733ND
2019-07-055810-046-0700ND
2019-07-055810-050-0653ND
2019-07-055810-054-07552.20 ppb
2019-07-055810-074-0715ND
2019-07-095810-016-0951ND
2019-07-095810-019-0842ND
2019-07-095810-076-0700ND
2019-07-105810-012-0724ND
2019-07-105810-031-0655ND
2019-07-115810-018-0740ND
2019-07-115810-049-09502.70 ppb
2019-07-115810-077-0745ND
2019-07-125810-025-10202.20 ppb
2019-07-125810-048-0910ND
2019-07-165810-032-0925ND
2019-07-165810-033-0905ND
2019-07-165810-068-08302.90 ppb
2019-07-175810-034-0935ND
2019-07-175810-052-0710ND
2019-07-175810-082-0730ND
2019-07-185810-036-0820ND
2019-07-185810-072-09452.80 ppb
2019-07-195810-026-0825ND
2019-07-225810-005-08002.30 ppb
2019-07-265810-020-0832ND
2019-08-215810-067-0920ND