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EWG's Tap Water Database — 2021 UPDATE

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Silver

San Jose Water Company

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.

MORE ABOUT THIS CONTAMINANT

 

172

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
2014ND300ND
2015ND220ND
2016ND380ND
2017ND280ND
2018ND240ND
2019ND300ND

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-071610-067-0905ND
2014-01-081610-136-0913ND
2014-01-131610-093-0850ND
2014-02-041610-002-0820ND
2014-02-041610-023-0915ND
2014-02-101610-173-1355ND
2014-03-041610-113-0925ND
2014-03-061610-178-0845ND
2014-03-071610-074-1020ND
2014-03-121610-170-0900ND
2014-03-121610-171-0930ND
2014-03-171610-141-1031ND
2014-04-031610-033-1050ND
2014-04-081610-086-1055ND
2014-06-031610-169-0815ND
2014-06-101610-179-0915ND
2014-06-111610-108-0950ND
2014-07-081610-133-0912ND
2014-07-101610-172-1000ND
2014-08-061610-003-0820ND
2014-08-141610-114-0845ND
2014-08-181610-109-1005ND
2014-09-231610-027-0845ND
2014-11-031610-102-0859ND
2014-11-051610-030-1230ND
2014-11-051610-094-0940ND
2014-11-121610-140-1100ND
2014-12-021610-068-1020ND
2014-12-031610-116-1250ND
2014-12-031610-138-0950ND
2015-01-071610-108-1140ND
2015-01-071610-175-1140ND
2015-01-131610-074-1108ND
2015-01-131610-085-0905ND
2015-03-031610-112-1105ND
2015-03-041610-024-1120ND
2015-03-051610-156-0922ND
2015-03-111610-125-0925ND
2015-03-121610-180-1006ND
2015-03-121610-183-1215ND
2015-04-081610-181-0915ND
2015-04-131610-016-0930ND
2015-05-141610-128-0846ND
2015-05-141610-130-0918ND
2015-06-031610-134-1022ND
2015-07-161610-116-0900ND
2015-08-051610-072-1100ND
2015-08-131610-029-1020ND
2015-08-261610-156-1120ND
2015-09-021610-111-0840ND
2015-09-241610-090-1145ND
2015-10-201610-126-0840ND
2016-01-071610-185-0955ND
2016-01-071610-186-0933ND
2016-01-121610-187-1410ND
2016-02-041610-107-1024ND
2016-02-041610-131-1130ND
2016-02-081610-142-0926ND
2016-02-081610-143-0935ND
2016-02-111610-004-0910ND
2016-02-181610-117-1202ND
2016-02-221610-031-0846ND
2016-02-221610-034-0910ND
2016-02-231610-025-0900ND
2016-02-231610-085-1100ND
2016-02-241610-135-1055ND
2016-02-241610-137-1132ND
2016-02-251610-005-1230ND
2016-03-011610-070-1015ND
2016-03-011610-101-0920ND
2016-03-021610-093-0955ND
2016-03-021610-118-1350ND
2016-03-031610-088-0855ND
2016-03-171610-168-0930ND
2016-03-171610-176-1105ND
2016-03-281610-022-1332ND
2016-03-281610-129-1210ND
2016-03-281610-177-0940ND
2016-04-141610-184-0830ND
2016-05-041233-198-1200ND
2016-05-241610-075-1130ND
2016-06-141610-092-1015ND
2016-06-151610-144-1030ND
2016-06-151233-199-1300ND
2016-06-201610-093-1020ND
2016-06-231610-067-1100ND
2016-07-261233-198-1230ND
2016-08-251233-194-1200ND
2016-10-031233-196-1100ND
2016-12-151233-195-1200ND
2017-01-111610-108-0947ND
2017-01-111610-109-1010ND
2017-01-121610-002-0830ND
2017-01-171610-023-0920ND
2017-01-171610-027-0950ND
2017-01-171610-085-1150ND
2017-01-181610-068-1055ND
2017-01-181610-172-1335ND
2017-01-261610-086-1415ND
2017-01-261610-170-1115ND
2017-01-311610-094-1215ND
2017-01-311610-169-0805ND
2017-01-311610-178-1250ND
2017-01-311610-179-1520ND
2017-02-011610-173-1355ND
2017-02-021610-138-0900ND
2017-02-081610-133-1150ND
2017-02-161610-030-1130ND
2017-02-271610-172-1335ND
2017-03-221610-102-0800ND
2017-03-231610-171-0630ND
2017-03-281610-110-1130ND
2017-03-281610-141-0830ND
2017-03-291610-033-0830ND
2017-05-101610-003-0840ND
2017-05-241610-140-1020ND
2017-06-291610-136-1000ND
2017-12-141610-074-1350ND
2018-01-091610-030-1110ND
2018-01-101610-029-0905ND
2018-01-111610-156-0940ND
2018-01-171610-074-1305ND
2018-01-181610-126-1249ND
2018-01-181610-134-1200ND
2018-01-181610-137-1154ND
2018-01-221610-085-1057ND
2018-01-241610-101-1450ND
2018-01-241610-180-1335ND
2018-01-251610-125-1130ND
2018-01-251610-128-1200ND
2018-01-251610-130-1055ND
2018-01-251610-175-1345ND
2018-01-301610-142-0940ND
2018-01-311610-090-1115ND
2018-01-311610-181-1210ND
2018-02-011610-111-1010ND
2018-02-011610-183-1220ND
2018-02-071610-112-0924ND
2018-03-061610-024-1345ND
2018-04-261610-113-1310ND
2018-08-161610-114-1107ND
2018-08-161610-116-0935ND
2019-01-141610-074-1340ND
2019-01-161610-199-0915ND
2019-01-231610-022-0910ND
2019-01-241610-025-1200ND
2019-01-241610-168-1325ND
2019-01-301610-004-0900ND
2019-01-301610-070-0950ND
2019-01-301610-185-1152ND
2019-01-311610-085-0846ND
2019-02-051610-107-0905ND
2019-02-051610-108-0923ND
2019-02-051610-178-1200ND
2019-02-071610-117-1040ND
2019-02-141610-186-0932ND
2019-02-211610-088-0935ND
2019-02-211610-131-1000ND
2019-02-211610-176-1130ND
2019-02-281610-129-0945ND
2019-02-281610-143-0945ND
2019-03-061610-135-1130ND
2019-03-061610-144-1420ND
2019-03-071610-173-1045ND
2019-03-141610-177-1135ND
2019-03-141610-187-1335ND
2019-03-211610-031-1121ND
2019-03-211610-067-1315ND
2019-03-211610-184-1017ND
2019-03-251610-034-1100ND
2019-03-261610-136-1329ND
2019-03-271610-093-1430ND