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EWG's Tap Water Database — 2021 UPDATE

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1,2,3-Trichloropropane

California Water Service (CWS) - Los Altos Suburban

1,2,3-Trichloropropane is a potent carcinogen that contaminates drinking water in agricultural regions where it was historically used as soil fumigant. Click here to read more about carcinogenic VOCs.

MORE ABOUT THIS CONTAMINANT

 

228

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND250ND
2014ND480ND
2015ND90ND
2016ND180ND
2017ND370ND
2018ND720ND
2019ND190ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.0007 ppb

The EWG Health Guideline of 0.0007 ppb for 1,2,3-trichloropropane 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.

ppb = parts per billion

All test results

Date Lab ID Result
2013-06-05201306060248AMND
2013-06-05201306060221AMND
2013-06-05201306060176AMND
2013-06-10201306110150AMND
2013-06-10201306110404AMND
2013-06-10201306110397AMND
2013-06-10201306110146AMND
2013-06-12201306130099AMND
2013-06-18201306190310AMND
2013-06-18201306190267AMND
2013-06-18201306190289AMND
2013-09-11201309120295AMND
2013-12-03201312040566AMND
2013-12-04201312050169AMND
2013-12-05201312060280AMND
2013-12-09201312100207AMND
2013-12-09201312100197AMND
2013-12-10201312110719AMND
2013-12-10201312110684AMND
2013-12-11201312120626AMND
2013-12-16201312170387AMND
2013-12-16201312170377AMND
2013-12-17201312180649AMND
2013-12-17201312180734AMND
2013-12-18201312200056AMND
2014-01-085810-008-1104ND
2014-01-085810-024-1330ND
2014-02-055701-024-1427ND
2014-02-125810-002-1201ND
2014-02-125810-010-1021ND
2014-02-135810-018-1041ND
2014-02-265701-002-1423ND
2014-02-265701-010-1456ND
2014-02-265701-018-1055ND
2014-03-05201403060200AMND
2014-03-255701-011-1305ND
2014-03-255701-011-1310ND
2014-03-255701-015-1210ND
2014-03-255701-028-1525ND
2014-03-255701-028-1530ND
2014-03-255701-030-1550ND
2014-03-255701-030-1555ND
2014-04-225701-020-1340ND
2014-04-225701-021-1140ND
2014-04-225701-022-1238ND
2014-05-215701-020-1309ND
2014-05-215701-021-1326ND
2014-05-215701-022-1124ND
2014-05-215701-023-1220ND
2014-05-215701-037-1550ND
2014-06-04201406050004AMND
2014-06-185701-024-1235ND
2014-06-185701-028-1015ND
2014-06-185701-029-1155ND
2014-06-185701-032-1300ND
2014-06-185701-035-1500ND
2014-06-245701-028-0945ND
2014-07-225701-024-0923ND
2014-07-225701-024-1030ND
2014-07-295701-002-1406ND
2014-07-295701-008-1146ND
2014-07-295701-016-1430ND
2014-08-045701-010-1218ND
2014-08-045701-018-1245ND
2014-10-079590-020-1440ND
2014-10-079590-021-1200ND
2014-10-079590-022-1535ND
2014-11-189590-037-1130ND
2014-12-105701-024-1240ND
2014-12-105701-028-1220ND
2014-12-105701-029-1142ND
2014-12-105701-032-1310ND
2014-12-105701-035-1207ND
2015-02-105701-013-1240ND
2015-03-185701-030-1115ND
2015-03-185701-057-1136ND
2015-07-225701-013-1040ND
2015-07-225701-030-1230ND
2015-07-225701-057-1102ND
2015-08-115701-013-1017ND
2015-09-095701-030-1350ND
2015-09-095701-057-1137ND
2016-12-065701-008-1200ND
2016-12-065701-010-1238ND
2016-12-065701-011-1213ND
2016-12-065701-013-1104ND
2016-12-065701-020-1530ND
2016-12-065701-024-1122ND
2016-12-065701-028-1255ND
2016-12-065701-030-1140ND
2016-12-065701-032-1156ND
2016-12-065701-035-1210ND
2016-12-065701-037-1520ND
2016-12-075810-002-1100ND
2016-12-075810-016-1250ND
2016-12-075810-018-0850ND
2016-12-075810-021-1320ND
2016-12-075810-023-0915ND
2016-12-075810-057-1020ND
2016-12-125701-029-1112ND
2017-01-245701-010-1135ND
2017-01-245701-011-1155ND
2017-02-165701-020-1427ND
2017-02-165701-021-1354ND
2017-02-165701-023-1143ND
2017-03-065701-022-1041ND
2017-03-155701-024-0937ND
2017-03-155701-028-1224ND
2017-04-115701-010-1130ND
2017-04-115701-011-1200ND
2017-04-115701-035-1230ND
2017-05-175701-013-1545ND
2017-05-175701-020-1425ND
2017-05-175701-021-1447ND
2017-05-175701-023-1235ND
2017-06-215701-024-1116ND
2017-06-215701-028-1306ND
2017-06-215701-030-1330ND
2017-07-195701-002-1135ND
2017-07-195701-008-1115ND
2017-07-195701-016-1150ND
2017-08-155701-022-1330ND
2017-08-155701-037-1545ND
2017-09-265701-029-1445ND
2017-09-265701-032-1330ND
2017-09-265701-035-1340ND
2017-10-185701-002-1135ND
2017-10-185701-008-1430ND
2017-10-185701-016-1155ND
2017-10-185701-018-1532ND
2017-11-285701-022-1545ND
2017-11-285701-037-1410ND
2017-11-295701-057-1345ND
2017-12-125701-029-1230ND
2017-12-125701-032-1200ND
2017-12-125701-035-1215ND
2017-12-125701-057-1400ND
2018-02-125701-013-1125ND
2018-02-225701-032-1318ND
2018-03-055701-008-1350ND
2018-03-055701-010-1225ND
2018-03-055701-011-1405ND
2018-03-055701-037-1440ND
2018-03-065701-002-1120ND
2018-03-065701-016-1135ND
2018-03-065701-023-1055ND
2018-03-065701-057-1230ND
2018-03-075701-018-1045ND
2018-03-075701-021-1300ND
2018-03-075701-022-1400ND
2018-03-155806-020-1250ND
2018-03-205701-030-1355ND
2018-03-225701-024-1525ND
2018-03-225701-028-1358ND
2018-03-225701-029-1418ND
2018-03-225701-030-1429ND
2018-03-225701-032-1442ND
2018-03-225701-035-1506ND
2018-04-105810-002-1145ND
2018-04-105810-016-1205ND
2018-04-105810-057-1400ND
2018-04-115701-008-1410ND
2018-04-115701-010-1440ND
2018-04-115701-011-1030ND
2018-04-115701-037-1220ND
2018-04-265810-018-1030ND
2018-04-265810-022-1135ND
2018-04-265810-029-1309ND
2018-04-265810-032-1245ND
2018-04-265810-035-1256ND
2018-05-165701-013-1205ND
2018-05-165701-020-1130ND
2018-05-165701-021-1340ND
2018-05-165701-023-1025ND
2018-06-275810-024-0911ND
2018-06-275810-028-1040ND
2018-06-275810-030-1030ND
2018-07-199590-018-0955ND
2018-07-199590-020-1220ND
2018-07-199590-021-1235ND
2018-07-199590-032-1300ND
2018-07-199590-035-1310ND
2018-07-239590-008-1130ND
2018-07-239590-010-0958ND
2018-07-239590-011-0920ND
2018-07-239590-016-1420ND
2018-07-239590-022-1305ND
2018-07-239590-023-1155ND
2018-07-239590-037-1140ND
2018-07-259590-024-1025ND
2018-07-259590-030-1010ND
2018-07-269590-002-1255ND
2018-07-269590-028-1410ND
2018-07-269590-029-1425ND
2018-08-089590-010-1020ND
2018-09-185701-057-1257ND
2018-09-289590-013-1430ND
2018-10-179590-013-1445ND
2018-10-174790-023-1315ND
2018-10-244790-016-1100ND
2018-11-149590-018-1248ND
2018-11-149590-022-1104ND
2018-11-149590-037-1415ND
2018-12-115701-029-1216ND
2018-12-115701-032-1253ND
2018-12-115701-035-1312ND
2018-12-115701-057-1138ND
2018-12-129590-002-1410ND
2018-12-285810-021-1145ND
2019-04-165810-011-1047ND
2019-04-175810-010-1420ND
2019-05-295701-013-1105ND
2019-05-295701-020-1430ND
2019-05-295701-021-1130ND
2019-05-295701-023-1215ND
2019-06-185810-024-1342ND
2019-07-105810-002-1309ND
2019-07-105810-008-1245ND
2019-07-105810-028-1455ND
2019-07-105810-030-1518ND
2019-10-095701-016-1345ND
2019-11-205810-018-1121ND
2019-11-205810-022-1240ND
2019-11-205810-037-1322ND
2019-12-175810-029-1652ND
2019-12-175810-032-1601ND
2019-12-175810-035-1540ND
2019-12-175810-057-1424ND