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EWG's Tap Water Database — 2021 UPDATE

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Silver

Castaic Lake 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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276

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND430ND
2015ND470ND
2016ND360ND
2017ND450ND
2018ND500ND
2019ND550ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-062104-003-0800ND
2014-01-062104-004-1010ND
2014-01-062104-005-1020ND
2014-01-062104-006-1040ND
2014-02-032104-003-1200ND
2014-02-032104-004-0950ND
2014-02-032104-005-1000ND
2014-02-032104-006-1015ND
2014-03-032104-003-0800ND
2014-03-032104-004-1000ND
2014-03-032104-005-1010ND
2014-03-032104-006-1050ND
2014-04-072104-003-0800ND
2014-04-072104-004-1055ND
2014-04-072104-005-1100ND
2014-04-072104-006-1120ND
2014-04-102104-002-0800ND
2014-05-052104-003-0800ND
2014-05-052104-004-1015ND
2014-05-052104-005-1025ND
2014-05-052104-006-1045ND
2014-06-022104-003-0800ND
2014-06-022104-005-1005ND
2014-06-022104-006-1025ND
2014-07-072104-003-0800ND
2014-07-072104-005-1005ND
2014-07-072104-006-1020ND
2014-08-042104-003-1105ND
2014-08-042104-005-1015ND
2014-08-042104-006-1035ND
2014-09-022104-003-0930ND
2014-09-022104-005-1320ND
2014-09-022104-006-1340ND
2014-10-202104-003-0830ND
2014-10-202104-005-1020ND
2014-10-202104-006-1040ND
2014-11-032104-003-0830ND
2014-11-032104-005-1010ND
2014-11-032104-006-1025ND
2014-12-012104-003-0900ND
2014-12-012104-004-1020ND
2014-12-012104-005-1030ND
2014-12-012104-006-1045ND
2015-01-052104-003-0900ND
2015-01-052104-004-1000ND
2015-01-052104-005-1010ND
2015-01-052104-006-1020ND
2015-02-022104-003-1010ND
2015-02-022104-004-1145ND
2015-02-022104-005-1200ND
2015-02-022104-006-1215ND
2015-03-022104-002-1450ND
2015-03-022104-004-1340ND
2015-03-022104-006-1310ND
2015-04-062104-002-1035ND
2015-04-062104-004-1135ND
2015-04-062104-006-1150ND
2015-04-092104-003-0920ND
2015-04-142104-005-1325ND
2015-05-042104-003-1430ND
2015-05-042104-004-1020ND
2015-05-042104-005-1040ND
2015-05-042104-006-1055ND
2015-06-012104-003-0910ND
2015-06-012104-004-0955ND
2015-06-012104-005-1005ND
2015-06-012104-006-1025ND
2015-07-062104-003-0910ND
2015-07-062104-004-1015ND
2015-07-062104-005-1025ND
2015-07-062104-006-1040ND
2015-08-032104-003-1035ND
2015-08-032104-004-1015ND
2015-08-032104-005-1545ND
2015-08-032104-006-1525ND
2015-09-082104-003-0920ND
2015-09-082104-004-1025ND
2015-09-082104-005-1035ND
2015-09-082104-006-1100ND
2015-10-052104-003-0845ND
2015-10-052104-004-1015ND
2015-10-052104-006-1405ND
2015-11-022104-003-0915ND
2015-11-022104-004-1005ND
2015-11-022104-005-1015ND
2015-11-022104-006-1035ND
2015-12-072104-003-0836ND
2015-12-072104-004-1025ND
2015-12-072104-005-1035ND
2015-12-072104-006-1050ND
2016-01-042104-003-0910ND
2016-01-042104-004-1030ND
2016-01-042104-005-1040ND
2016-01-042104-006-1100ND
2016-02-082104-002-1020ND
2016-02-082104-004-1155ND
2016-02-082104-005-1210ND
2016-02-082104-006-1220ND
2016-03-072104-003-0930ND
2016-03-072104-004-1035ND
2016-03-072104-005-1045ND
2016-03-072104-006-1105ND
2016-04-112104-004-1035ND
2016-04-112104-005-1045ND
2016-04-112104-006-1105ND
2016-04-182104-003-1450ND
2016-05-022104-003-0900ND
2016-05-022104-004-1035ND
2016-05-022104-005-1045ND
2016-05-022104-006-1100ND
2016-06-062104-003-0900ND
2016-06-062104-004-1025ND
2016-06-062104-005-1035ND
2016-06-062104-006-1050ND
2016-07-052104-003-1030ND
2016-07-052104-004-1240ND
2016-07-052104-005-1250ND
2016-07-052104-006-1310ND
2016-08-012104-003-0945ND
2016-08-012104-004-1025ND
2016-08-012104-005-1035ND
2016-08-012104-006-1055ND
2016-11-079590-003-0900ND
2016-11-079590-004-1210ND
2016-11-079590-005-1220ND
2016-11-079590-006-1245ND
2017-01-099590-004-1030ND
2017-01-099590-005-1045ND
2017-01-099590-006-1100ND
2017-01-119590-003-1100ND
2017-02-069590-002-1000ND
2017-02-069590-004-1130ND
2017-02-069590-005-1135ND
2017-02-069590-006-1150ND
2017-03-069590-003-0840ND
2017-03-069590-004-0840ND
2017-03-069590-004-1015ND
2017-03-069590-005-1025ND
2017-03-069590-006-1045ND
2017-04-109590-003-0840ND
2017-04-109590-004-1035ND
2017-04-109590-005-1045ND
2017-04-109590-006-1125ND
2017-05-019590-003-0830ND
2017-05-019590-004-1030ND
2017-05-019590-005-1040ND
2017-05-019590-006-1110ND
2017-07-109590-002-1000ND
2017-07-109590-003-0945ND
2017-07-109590-004-1100ND
2017-07-109590-005-1110ND
2017-07-109590-006-1135ND
2017-08-079590-002-0745ND
2017-08-079590-003-1015ND
2017-08-079590-004-0845ND
2017-08-079590-005-0855ND
2017-08-079590-006-0915ND
2017-09-119590-002-1005ND
2017-09-119590-003-1000ND
2017-09-119590-004-1105ND
2017-09-119590-005-1115ND
2017-09-119590-006-1445ND
2017-10-029590-003-0935ND
2017-10-029590-005-1015ND
2017-10-029590-006-1030ND
2017-11-069590-003-0900ND
2017-11-069590-004-1040ND
2017-11-069590-005-1050ND
2017-11-069590-006-1115ND
2017-12-049590-003-0830ND
2017-12-049590-005-1020ND
2018-01-089590-003-0830ND
2018-01-089590-004-1010ND
2018-01-089590-005-1020ND
2018-01-089590-006-1045ND
2018-02-159590-003-0830ND
2018-03-019590-003-0825ND
2018-03-059590-004-1425ND
2018-03-059590-005-1435ND
2018-03-059590-006-1450ND
2018-04-022104-002-0955ND
2018-04-022104-003-0850ND
2018-04-022104-004-1100ND
2018-04-022104-006-1135ND
2018-05-072104-003-1020ND
2018-05-072104-004-1015ND
2018-05-072104-005-1025ND
2018-05-072104-006-1055ND
2018-06-042104-003-0910ND
2018-06-042104-004-1025ND
2018-06-042104-006-1040ND
2018-06-072104-005-1010ND
2018-07-092104-002-0930ND
2018-07-092104-003-0930ND
2018-07-092104-004-1000ND
2018-07-092104-005-0925ND
2018-07-092104-006-0940ND
2018-08-062104-002-1025ND
2018-08-062104-003-0830ND
2018-08-062104-004-1125ND
2018-08-062104-005-1135ND
2018-08-062104-006-1150ND
2018-09-102104-002-0920ND
2018-09-102104-003-0900ND
2018-09-102104-004-1020ND
2018-09-102104-005-1030ND
2018-09-102104-006-1045ND
2018-10-082104-002-0945ND
2018-10-082104-003-0845ND
2018-10-082104-004-1055ND
2018-10-082104-005-1110ND
2018-10-082104-006-1130ND
2018-11-052104-002-0945ND
2018-11-052104-003-0845ND
2018-11-052104-004-1045ND
2018-11-052104-005-1055ND
2018-11-052104-006-1110ND
2018-12-032104-002-0945ND
2018-12-032104-004-1040ND
2018-12-032104-005-1050ND
2018-12-032104-006-1105ND
2019-01-072104-002-1015ND
2019-01-072104-004-1110ND
2019-01-072104-005-1120ND
2019-01-072104-006-1135ND
2019-02-112104-004-1120ND
2019-02-112104-005-1130ND
2019-02-112104-006-1150ND
2019-03-042104-002-1000ND
2019-03-042104-004-1100ND
2019-03-042104-005-1110ND
2019-03-042104-006-1130ND
2019-04-012104-002-0805ND
2019-04-012104-003-1015ND
2019-04-012104-004-1105ND
2019-04-012104-005-1115ND
2019-04-012104-006-1135ND
2019-05-062104-002-0945ND
2019-05-062104-003-0830ND
2019-05-062104-004-1035ND
2019-05-062104-005-1045ND
2019-05-062104-006-1100ND
2019-06-032104-002-1015ND
2019-06-032104-003-0905ND
2019-06-032104-004-1120ND
2019-06-032104-005-1130ND
2019-06-032104-006-1145ND
2019-07-082104-002-1005ND
2019-07-082104-003-0830ND
2019-07-082104-004-1115ND
2019-07-082104-005-1120ND
2019-07-082104-006-1140ND
2019-08-052104-002-0950ND
2019-08-052104-003-0910ND
2019-08-052104-004-1045ND
2019-08-052104-005-1055ND
2019-08-052104-006-1115ND
2019-09-092104-002-1110ND
2019-09-092104-003-0830ND
2019-09-092104-004-1205ND
2019-09-092104-005-1210ND
2019-09-092104-006-1245ND
2019-10-072104-002-1024ND
2019-10-072104-003-0855ND
2019-10-072104-004-1104ND
2019-10-072104-005-1122ND
2019-10-072104-006-1146ND
2019-11-042104-002-1000ND
2019-11-042104-003-0950ND
2019-11-042104-004-1105ND
2019-11-042104-005-1110ND
2019-11-042104-006-1125ND
2019-12-022104-004-1020ND
2019-12-022104-005-1030ND
2019-12-022104-006-1100ND
2019-12-042104-002-1010ND