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EWG's Tap Water Database — 2021 UPDATE

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Selenium

City of Bakersfield

Selenium is an essential element in diets. But too much selenium can decrease thyroid hormone production and cause hair loss, skin lesions and brittle fingernails.

 

413

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20140.177 ppb13191ND - 0.665 ppb
20150.316 ppb5321ND - 6.00 ppb
20160.0494 ppb762ND - 3.20 ppb
20170.0561 ppb822ND - 2.30 ppb
20180.124 ppb501ND - 6.20 ppb
2019ND210ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 30 ppb

The EWG Health Guideline of 30 ppb for selenium 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 hair loss and nail damage.

EPA Maximum Contaminant
Level (MCL) 50 ppb

The legal limit for selenium, established in 1991, was based on human epidemiological studies of populations exposed to naturally occurring selenium in drinking water. This limit does not include any additional consideration of children’s health.

ppb = parts per billion

All test results

Date Lab ID Result
2014-03-035810-117-1006ND
2014-04-085810-100-1205ND
2014-04-145810-103-1029ND
2014-04-235810-103-1510ND
2014-05-055701-037-13150.381 ppb
2014-05-055701-044-13000.362 ppb
2014-05-055701-074-1415ND
2014-05-055701-102-13450.499 ppb
2014-05-055701-103-14000.610 ppb
2014-05-065810-011-0930ND
2014-05-275701-037-13550.180 ppb
2014-05-275701-044-13400.125 ppb
2014-05-275701-074-1445ND
2014-05-275701-102-14100.250 ppb
2014-05-275701-103-14300.390 ppb
2014-06-025701-033-10000.118 ppb
2014-06-025701-044-13450.170 ppb
2014-06-025701-074-1440ND
2014-06-025701-102-14100.263 ppb
2014-06-025701-103-14200.301 ppb
2014-06-035810-009-0905ND
2014-06-055701-115-10200.183 ppb
2014-06-095701-044-14200.158 ppb
2014-06-095701-074-1300ND
2014-06-095701-102-14300.288 ppb
2014-06-095701-103-14500.351 ppb
2014-06-165701-044-14000.166 ppb
2014-06-165701-074-1230ND
2014-06-165701-102-14200.316 ppb
2014-06-165701-103-14450.380 ppb
2014-06-235810-119-1030ND
2014-06-305701-044-12500.0720 ppb
2014-06-305701-074-1340ND
2014-06-305701-102-13150.145 ppb
2014-06-305701-103-13300.312 ppb
2014-07-025806-109-1420ND
2014-07-075701-038-0852ND
2014-07-075701-044-12450.0200 ppb
2014-07-075701-074-1330ND
2014-07-075701-102-15000.188 ppb
2014-07-075701-103-13150.225 ppb
2014-07-085701-034-0936ND
2014-07-105806-034-1326ND
2014-07-105806-108-1045ND
2014-07-145701-044-13300.0500 ppb
2014-07-145701-074-1515ND
2014-07-145701-102-13500.166 ppb
2014-07-145701-103-14150.194 ppb
2014-07-235701-044-14250.626 ppb
2014-07-235701-074-1442ND
2014-07-235701-102-14100.531 ppb
2014-07-235701-103-13500.498 ppb
2014-07-285701-037-14400.589 ppb
2014-07-285701-044-12200.338 ppb
2014-07-285701-074-1340ND
2014-07-285701-102-13000.281 ppb
2014-07-285701-103-13200.339 ppb
2014-08-115701-037-14450.445 ppb
2014-08-115701-044-14200.420 ppb
2014-08-115701-074-1030ND
2014-08-115701-102-13100.553 ppb
2014-08-115701-103-13250.665 ppb
2014-08-185701-037-13150.348 ppb
2014-08-185701-044-13000.289 ppb
2014-08-185701-074-1420ND
2014-08-185701-102-13250.409 ppb
2014-08-185701-103-13500.559 ppb
2014-08-195701-003-13580.310 ppb
2014-08-195806-003-1400ND
2014-08-195701-023-10300.234 ppb
2014-08-195806-023-1037ND
2014-08-255701-034-13380.317 ppb
2014-08-255701-037-12300.345 ppb
2014-08-255701-044-12200.363 ppb
2014-08-255701-074-1330ND
2014-08-255701-102-12500.440 ppb
2014-08-255701-103-13000.607 ppb
2014-09-025701-037-13200.197 ppb
2014-09-025701-044-13000.116 ppb
2014-09-025701-074-1055ND
2014-09-025701-102-14000.341 ppb
2014-09-025701-103-14150.308 ppb
2014-09-045701-034-13260.0160 ppb
2014-09-085701-037-13200.0890 ppb
2014-09-085701-044-13000.0900 ppb
2014-09-085701-074-1115ND
2014-09-085701-102-14000.225 ppb
2014-09-085701-103-14100.346 ppb
2014-09-095701-033-14150.0180 ppb
2014-09-105701-033-10430.0200 ppb
2014-09-105806-033-1058ND
2014-09-295701-037-10000.153 ppb
2014-09-295701-044-09450.137 ppb
2014-09-295701-046-09250.197 ppb
2014-09-295701-074-1030ND
2014-09-295701-102-10150.173 ppb
2014-10-065701-037-11450.0610 ppb
2014-10-065701-038-1230ND
2014-10-065701-044-11300.106 ppb
2014-10-065701-046-10550.122 ppb
2014-10-065701-074-1330ND
2014-10-065701-102-12000.141 ppb
2014-10-065701-109-11300.262 ppb
2014-10-135701-037-13150.154 ppb
2014-10-135701-044-13000.211 ppb
2014-10-135701-074-1400ND
2014-10-135701-102-13300.334 ppb
2014-10-205701-037-14150.167 ppb
2014-10-205701-044-14300.149 ppb
2014-10-205701-074-1345ND
2014-10-205701-102-15000.233 ppb
2014-10-275701-003-15000.0210 ppb
2014-10-275701-037-10000.184 ppb
2014-10-275701-044-10150.157 ppb
2014-10-275701-074-1045ND
2014-10-275701-102-10100.237 ppb
2014-10-285810-104-1408ND
2014-11-035701-037-13280.120 ppb
2014-11-035701-044-14300.153 ppb
2014-11-035701-074-1135ND
2014-11-035701-102-13350.287 ppb
2014-12-085701-033-09570.0240 ppb
2014-12-085701-037-10100.1000 ppb
2014-12-085701-044-10000.156 ppb
2014-12-085701-074-1130ND
2014-12-085701-102-10200.251 ppb
2014-12-155701-037-11400.206 ppb
2014-12-155701-044-11300.173 ppb
2014-12-155701-074-1300ND
2014-12-155701-102-11500.377 ppb
2014-12-295701-044-11500.0340 ppb
2015-01-145810-037-0825ND
2015-01-205701-037-12150.314 ppb
2015-01-205701-044-12050.397 ppb
2015-01-205701-074-1400ND
2015-01-205701-102-12300.443 ppb
2015-01-265701-037-10500.192 ppb
2015-01-265701-044-11350.117 ppb
2015-01-265701-074-1155ND
2015-01-265701-102-11150.267 ppb
2015-01-305701-038-09450.0980 ppb
2015-02-055806-017-1125ND
2015-02-175701-074-0900ND
2015-02-175701-102-08300.109 ppb
2015-03-025701-037-11400.355 ppb
2015-03-025701-038-14250.421 ppb
2015-03-025701-044-11300.295 ppb
2015-03-025701-074-1500ND
2015-03-025701-102-11500.506 ppb
2015-03-175806-010-1106ND
2015-03-175806-019-1425ND
2015-03-175806-043-1300ND
2015-04-065701-037-14400.525 ppb
2015-04-065701-044-14150.691 ppb
2015-04-065806-044-1420ND
2015-04-065701-074-1300ND
2015-04-065701-103-14500.835 ppb
2015-04-065806-105-10262.60 ppb
2015-04-075701-038-11081.22 ppb
2015-04-225806-102-1335ND
2015-05-295701-126-14510.457 ppb
2015-06-095701-115-12000.404 ppb
2015-06-155701-109-11200.508 ppb
2015-06-255806-013-0900ND
2015-07-015806-126-1441ND
2015-07-015806-127-1113ND
2015-07-165806-050-0832ND
2015-07-225806-118-0925ND
2015-08-265806-016-1510ND
2015-09-065701-037-0830ND
2015-09-065701-044-0950ND
2015-09-065701-074-1015ND
2015-09-065701-102-0915ND
2015-09-065701-103-0930ND
2015-09-085701-115-1130ND
2015-09-165806-014-0955ND
2015-10-145701-109-0850ND
2015-12-075806-041-1330ND
2015-12-075806-045-1240ND
2015-12-075806-049-11466.00 ppb
2015-12-145806-012-1315ND
2015-12-215806-020-0918ND
2015-12-225806-038-1205ND
2015-12-295701-104-1430ND
2016-01-125701-109-1110ND
2016-01-315701-037-1037ND
2016-01-315701-044-0812ND
2016-01-315701-074-0845ND
2016-01-315701-102-1043ND
2016-01-315701-103-1049ND
2016-02-015701-104-1330ND
2016-02-245806-039-1110ND
2016-03-035701-115-1220ND
2016-03-065701-037-1012ND
2016-03-065701-044-0825ND
2016-03-065701-074-0845ND
2016-03-065701-102-0805ND
2016-03-075806-025-0950ND
2016-03-075806-027-1220ND
2016-03-175701-020-1131ND
2016-03-245806-018-0903ND
2016-04-015806-104-11253.20 ppb
2016-04-045806-139-1226ND
2016-04-215701-139-1441ND
2016-04-265701-139-1012ND
2016-05-085701-037-0719ND
2016-05-085701-044-0709ND
2016-05-085701-074-0812ND
2016-05-085701-102-0731ND
2016-05-085701-103-1005ND
2016-05-155701-037-0921ND
2016-05-155701-044-0912ND
2016-05-155701-074-0947ND
2016-05-155701-102-0927ND
2016-05-155701-103-0933ND
2016-05-165701-126-1410ND
2016-05-225701-037-0902ND
2016-05-225701-044-0855ND
2016-05-225701-074-1016ND
2016-05-225701-102-0906ND
2016-05-225701-103-0920ND
2016-05-245701-041-1017ND
2016-06-035701-139-1300ND
2016-06-055701-037-0945ND
2016-06-055701-044-0925ND
2016-06-055701-074-1045ND
2016-06-055701-102-1015ND
2016-06-055701-103-1030ND
2016-06-145806-021-1120ND
2016-06-275701-004-1224ND
2016-06-275806-004-1234ND
2016-07-035701-037-1030ND
2016-07-035701-044-1125ND
2016-07-035701-074-1145ND
2016-07-035701-102-1045ND
2016-07-035701-103-1105ND
2016-07-215701-139-0921ND
2016-08-145701-037-1045ND
2016-08-145701-044-1140ND
2016-08-145701-074-1200ND
2016-08-145701-102-1055ND
2016-08-145701-103-1130ND
2016-08-155806-008-1102ND
2016-08-165806-042-0900ND
2016-08-295806-022-1115ND
2016-09-135806-115-1400ND
2016-09-275806-030-1400ND
2016-09-285806-007-1010ND
2016-09-285806-031-0920ND
2016-09-295701-020-1345ND
2016-10-095701-037-0950ND
2016-10-095701-044-0930ND
2016-10-095701-074-1000ND
2016-10-095701-102-0940ND
2016-10-095701-103-0945ND
2016-10-275806-047-1232ND
2016-10-315806-046-1209ND
2016-11-015806-035-1147ND
2016-12-065701-020-1322ND
2016-12-085701-115-13300.555 ppb
2017-01-045701-037-0940ND
2017-01-045701-044-1030ND
2017-01-045701-074-1100ND
2017-01-045701-102-1000ND
2017-01-045701-103-1020ND
2017-01-095701-109-1315ND
2017-01-185701-037-1130ND
2017-01-185701-044-1120ND
2017-01-185701-074-1100ND
2017-01-185701-102-1140ND
2017-01-185701-103-1150ND
2017-01-255701-037-1031ND
2017-01-255701-044-1018ND
2017-01-255701-074-1139ND
2017-01-255701-102-1041ND
2017-01-255701-103-1055ND
2017-02-025701-139-1127ND
2017-02-085701-037-1030ND
2017-02-085701-044-1015ND
2017-02-085701-074-1440ND
2017-02-085701-102-1100ND
2017-02-085701-103-1110ND
2017-03-175806-117-0955ND
2017-04-105806-100-1005ND
2017-04-125806-103-1105ND
2017-04-135806-119-1435ND
2017-05-035701-037-1105ND
2017-05-035701-044-1115ND
2017-05-035701-074-1430ND
2017-05-035701-102-1130ND
2017-05-035701-103-1145ND
2017-05-095806-011-1120ND
2017-05-105701-037-1040ND
2017-05-105701-044-1055ND
2017-05-105701-074-1400ND
2017-05-105701-102-1110ND
2017-05-105701-103-1125ND
2017-05-165701-126-1405ND
2017-05-175701-037-1036ND
2017-05-175701-044-1001ND
2017-05-175701-074-1341ND
2017-05-175701-102-1029ND
2017-05-175701-103-1053ND
2017-05-185701-038-1537ND
2017-05-185701-038-1630ND
2017-05-185701-144-1547ND
2017-05-185701-144-1634ND
2017-06-095806-009-0840ND
2017-06-195701-037-0944ND
2017-06-195701-044-0934ND
2017-06-195701-074-1104ND
2017-06-195701-102-1021ND
2017-06-195701-103-0959ND
2017-06-225701-139-0944ND
2017-06-265701-037-1015ND
2017-06-265701-044-1025ND
2017-06-265701-074-1440ND
2017-06-265701-102-1040ND
2017-06-265701-103-1050ND
2017-06-265701-139-0906ND
2017-07-065806-034-11452.30 ppb
2017-07-065806-038-11452.30 ppb
2017-07-065806-108-1055ND
2017-07-105806-109-1120ND
2017-07-175701-037-0940ND
2017-07-175701-044-0950ND
2017-07-175701-074-1410ND
2017-07-175701-102-1005ND
2017-07-175701-103-1015ND
2017-07-185701-139-0855ND
2017-08-105806-023-1330ND
2017-08-155701-126-0900ND
2017-08-305806-003-1030ND
2017-09-195701-033-0936ND
2017-10-115806-104-1433ND
2017-10-185701-037-1035ND
2017-10-185701-044-0950ND
2017-10-185701-074-1120ND
2017-10-185701-102-1046ND
2017-10-185701-103-1055ND
2017-12-055806-033-1250ND
2017-12-145701-143-0924ND
2018-01-235806-037-1217ND
2018-01-295806-145-1340ND
2018-02-055701-037-1020ND
2018-02-055701-044-1040ND
2018-02-055701-074-1125ND
2018-02-055701-102-1005ND
2018-02-055701-103-0950ND
2018-02-055701-145-0930ND
2018-02-065701-033-0915ND
2018-02-135701-033-1115ND
2018-02-145701-102-1110ND
2018-03-125806-104-1435ND
2018-03-135701-033-1025ND
2018-03-145806-043-1140ND
2018-03-145806-044-1050ND
2018-03-145806-102-0935ND
2018-04-095701-037-1043ND
2018-04-095701-044-0940ND
2018-04-095701-074-1102ND
2018-04-095701-102-1006ND
2018-04-095701-103-1022ND
2018-04-095701-145-1031ND
2018-04-105701-033-1115ND
2018-04-185806-105-12006.20 ppb
2018-05-085806-010-0820ND
2018-05-165806-019-0945ND
2018-05-295806-041-1000ND
2018-06-125806-118-1053ND
2018-06-255701-037-1348ND
2018-06-255701-038-1030ND
2018-06-255701-044-1342ND
2018-06-255701-074-1230ND
2018-06-255701-102-1355ND
2018-06-255701-103-1411ND
2018-06-255701-144-1034ND
2018-06-255701-145-1420ND
2018-06-275701-033-1335ND
2018-06-275806-127-1222ND
2018-06-285806-017-1000ND
2018-07-245806-018-0825ND
2018-07-245701-143-1017ND
2018-08-155701-038-0936ND
2018-08-155701-144-0938ND
2018-08-165806-012-0825ND
2018-08-215806-016-0930ND
2018-09-115806-013-1105ND
2018-09-135806-014-1040ND
2018-10-305806-014-1100ND
2018-12-195806-020-1047ND
2018-12-205806-050-1138ND
2019-02-125806-039-0930ND
2019-03-075701-115-1123ND
2019-03-195806-027-1119ND
2019-03-255806-025-0925ND
2019-04-025701-139-1030ND
2019-04-255701-038-1059ND
2019-04-255701-144-1105ND
2019-06-135806-008-1130ND
2019-06-135806-021-0822ND
2019-06-185806-020-0900ND
2019-07-185806-046-1121ND
2019-08-195806-042-1205ND
2019-09-105806-007-1131ND
2019-09-105806-030-1020ND
2019-09-115806-035-0820ND
2019-09-125806-031-0925ND
2019-09-255806-022-1230ND
2019-09-255806-115-1250ND
2019-11-195806-045-0909ND
2019-11-195806-126-1345ND
2019-12-195806-047-1507ND