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EWG's Tap Water Database — 2021 UPDATE

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Silver

Zone 7 Water Agency

Silver occurs naturally in surface and groundwater and can be added to water as a biocide that inhibits growth of bacteria and algae. Increasingly, the use of antimicrobial nano-sized silver particles in consumer products contributes to silver in water sources used for drinking water.

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235

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND370ND
2015ND290ND
2016ND310ND
2017ND310ND
2018ND510ND
2019ND560ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-065100-001-0945ND
2014-01-065100-006-1120ND
2014-01-065100-008-0915ND
2014-01-065100-012-1240ND
2014-02-035100-001-1025ND
2014-02-185100-008-0950ND
2014-03-245100-001-1000ND
2014-03-245100-008-1045ND
2014-04-075100-001-0940ND
2014-04-075100-008-1120ND
2014-05-055100-001-0930ND
2014-05-055100-008-1035ND
2014-06-095100-001-1000ND
2014-06-095100-008-1035ND
2014-06-105100-005-1000ND
2014-06-105100-011-1040ND
2014-06-115100-006-0825ND
2014-06-115100-013-0930ND
2014-06-165100-007-0910ND
2014-06-175100-012-1125ND
2014-06-195100-019-0935ND
2014-07-075100-001-1000ND
2014-07-075100-008-1015ND
2014-08-045100-001-0950ND
2014-08-045100-008-1035ND
2014-08-115100-005-0920ND
2014-08-115100-011-0940ND
2014-09-085100-001-0840ND
2014-09-085100-006-1150ND
2014-09-095100-007-0930ND
2014-09-105100-005-0830ND
2014-09-105100-011-0800ND
2014-10-065100-001-1110ND
2014-10-065100-008-0825ND
2014-11-035100-001-0935ND
2014-11-035100-008-0930ND
2014-11-135100-017-0905ND
2015-01-055100-001-0935ND
2015-01-055100-008-0945ND
2015-02-025100-008-0955ND
2015-03-025100-001-1005ND
2015-03-035100-017-0825ND
2015-03-245100-019-1005ND
2015-04-135100-001-0850ND
2015-04-135100-008-0840ND
2015-05-045100-001-0945ND
2015-05-045100-008-1025ND
2015-06-225100-001-1100ND
2015-06-225100-008-0845ND
2015-06-245100-019-0845ND
2015-06-255100-017-0955ND
2015-06-265100-005-0905ND
2015-06-265100-007-0930ND
2015-07-065100-001-0855ND
2015-07-065100-008-1036ND
2015-08-035100-001-0920ND
2015-08-035100-008-1010ND
2015-09-085100-001-0930ND
2015-09-085100-008-1030ND
2015-09-105100-017-0910ND
2015-10-055100-001-0950ND
2015-10-055100-008-0920ND
2015-11-025100-001-0927ND
2015-11-025100-008-0925ND
2015-11-235100-017-1110ND
2015-12-075100-001-0930ND
2016-01-045100-001-0930ND
2016-02-015100-001-1405ND
2016-02-035100-012-1050ND
2016-02-095100-005-0855ND
2016-02-095100-011-0842ND
2016-03-035100-006-1100ND
2016-03-035100-017-0935ND
2016-03-075100-001-0925ND
2016-03-295100-007-1245ND
2016-03-305100-020-1030ND
2016-04-045100-005-1044ND
2016-04-045100-008-0905ND
2016-04-045100-013-1425ND
2016-04-045100-019-1135ND
2016-04-065100-012-1105ND
2016-04-065100-020-1155ND
2016-05-025100-019-1225ND
2016-05-045100-001-0825ND
2016-05-045100-008-1200ND
2016-05-195100-007-0900ND
2016-05-195100-017-0945ND
2016-05-195100-020-1058ND
2016-06-025100-005-0820ND
2016-06-065100-001-0935ND
2016-06-065100-008-1025ND
2016-07-115100-001-0920ND
2016-07-115100-007-1220ND
2016-07-115100-008-1010ND
2016-07-115100-020-1317ND
2016-07-135100-017-1035ND
2016-07-135100-019-0920ND
2017-01-049590-013-1000ND
2017-01-049590-017-0945ND
2017-01-239590-012-1030ND
2017-02-149590-008-1023ND
2017-02-149590-020-1455ND
2017-02-159590-001-1045ND
2017-07-105100-007-1010ND
2017-07-105100-019-1135ND
2017-07-115100-001-0935ND
2017-07-115100-008-0955ND
2017-07-115100-017-1210ND
2017-07-125100-012-0900ND
2017-07-135100-013-0915ND
2017-07-315100-020-1040ND
2017-08-095100-001-1015ND
2017-08-095100-008-1035ND
2017-09-055100-001-0900ND
2017-09-055100-008-0947ND
2017-09-255100-005-1010ND
2017-10-025100-001-0915ND
2017-10-025100-008-1010ND
2017-10-035100-005-1055ND
2017-10-035100-013-1025ND
2017-10-035100-017-0950ND
2017-10-055100-006-0935ND
2017-10-055100-007-1015ND
2017-10-165100-019-1255ND
2017-11-065100-001-0915ND
2017-11-065100-008-1050ND
2017-12-045100-001-0900ND
2017-12-045100-008-0945ND
2018-01-225100-001-0946ND
2018-01-255100-005-1335ND
2018-02-055100-012-0905ND
2018-02-055100-013-0850ND
2018-02-055100-017-0950ND
2018-02-065100-001-0958ND
2018-02-065100-005-0912ND
2018-02-065100-011-0855ND
2018-02-285100-006-0945ND
2018-02-285100-008-1100ND
2018-03-075100-001-1123ND
2018-03-075100-008-1010ND
2018-04-095100-001-1137ND
2018-04-095100-008-1020ND
2018-04-095100-017-1035ND
2018-04-105100-005-1240ND
2018-04-105100-011-1215ND
2018-04-105100-019-0925ND
2018-04-115100-006-1010ND
2018-04-115100-012-1040ND
2018-04-115100-013-0940ND
2018-05-075100-001-1515ND
2018-05-075100-008-1330ND
2018-06-045100-001-0920ND
2018-06-045100-008-1010ND
2018-07-095100-001-1225ND
2018-07-095100-005-1350ND
2018-07-095100-008-0925ND
2018-07-095100-013-0930ND
2018-07-095100-017-1120ND
2018-07-095100-019-1000ND
2018-07-115100-006-0935ND
2018-07-115100-011-0900ND
2018-08-065100-001-0935ND
2018-08-065100-008-0925ND
2018-08-075100-007-0845ND
2018-09-105100-001-0830ND
2018-09-105100-008-0840ND
2018-09-255100-020-1314ND
2018-10-085100-001-0825ND
2018-10-085100-008-0959ND
2018-10-085100-012-1200ND
2018-10-085100-019-1140ND
2018-10-095100-017-0900ND
2018-10-105100-007-1435ND
2018-10-105100-020-1415ND
2018-12-035100-008-1010ND
2018-12-035100-020-1005ND
2018-12-045100-013-0920ND
2018-12-045100-019-1000ND
2018-12-175100-001-0923ND
2019-01-075100-005-1215ND
2019-01-075100-008-1017ND
2019-01-075100-012-1100ND
2019-01-075100-017-1025ND
2019-01-075100-020-1150ND
2019-01-085100-007-0910ND
2019-01-085100-011-1015ND
2019-01-085100-019-0940ND
2019-02-045100-008-1028ND
2019-03-045100-008-0907ND
2019-04-085100-007-1130ND
2019-04-085100-008-0925ND
2019-04-085100-017-0916ND
2019-04-095100-006-0920ND
2019-04-095100-012-0935ND
2019-04-095100-013-0955ND
2019-04-095100-019-1040ND
2019-05-065100-001-0850ND
2019-05-065100-008-1215ND
2019-06-035100-001-0940ND
2019-06-035100-008-0910ND
2019-07-085100-005-1015ND
2019-07-085100-007-0950ND
2019-07-085100-011-0945ND
2019-07-085100-013-1015ND
2019-07-085100-020-1130ND
2019-07-095100-006-1145ND
2019-07-095100-017-0925ND
2019-07-095100-019-1045ND
2019-07-105100-001-1010ND
2019-07-105100-008-1115ND
2019-08-055100-001-1105ND
2019-08-055100-008-0915ND
2019-08-055100-012-0905ND
2019-08-055100-020-0935ND
2019-09-095100-001-0840ND
2019-09-095100-008-1005ND
2019-10-075100-001-1325ND
2019-10-075100-005-1150ND
2019-10-075100-006-0900ND
2019-10-075100-007-0830ND
2019-10-075100-008-1210ND
2019-10-075100-011-1050ND
2019-10-075100-012-1015ND
2019-10-075100-013-0945ND
2019-10-075100-020-0920ND
2019-10-085100-017-0830ND
2019-10-085100-019-1015ND
2019-11-045100-001-0855ND
2019-11-045100-008-1030ND
2019-12-025100-008-1006ND
2019-12-025100-020-0850ND
2019-12-035100-017-1155ND
2019-12-035100-019-1340ND
2019-12-105100-017-1100ND
2019-12-105100-019-0942ND