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EWG's Tap Water Database — 2021 UPDATE

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Bromoform

California Water Service - Stockton

Bromoform, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Bromoform and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

 

524

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND1150ND
20150.0320 ppb1022ND - 2.45 ppb
20160.0107 ppb721ND - 0.770 ppb
2017ND830ND
2018ND770ND
2019ND750ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.5 ppb

The EWG Health Guideline of 0.5 ppb for bromoform was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-065701-069-0917ND
2014-01-065701-131-0905ND
2014-01-235701-007-1227ND
2014-01-235701-013-1145ND
2014-01-235701-028-1205ND
2014-01-235701-064-1045ND
2014-01-235701-065-1105ND
2014-01-235701-067-1125ND
2014-02-035701-069-0957ND
2014-02-035701-131-0945ND
2014-02-045701-063-1036ND
2014-02-045701-125-1040ND
2014-02-125701-063-0930ND
2014-02-125701-125-0937ND
2014-02-135701-131-1156ND
2014-02-135701-900-1130ND
2014-02-135701-901-0905ND
2014-02-135701-902-1000ND
2014-02-135701-903-0930ND
2014-02-135701-904-1104ND
2014-02-135701-905-1141ND
2014-02-135701-906-1024ND
2014-02-205701-062-1115ND
2014-03-045701-069-0715ND
2014-03-045701-131-0726ND
2014-03-115701-063-1238ND
2014-03-115701-125-1210ND
2014-03-185701-130-1146ND
2014-03-185701-132-1310ND
2014-04-025701-069-0920ND
2014-04-025701-131-0940ND
2014-04-095701-063-1212ND
2014-04-095701-125-1307ND
2014-04-155701-007-1013ND
2014-04-155701-013-1210ND
2014-04-155701-018-1232ND
2014-04-155701-028-1150ND
2014-04-155701-065-1624ND
2014-04-155701-067-1130ND
2014-04-299590-018-1015ND
2014-04-305701-050-1319ND
2014-04-305701-052-1020ND
2014-05-065701-069-0930ND
2014-05-065701-131-0947ND
2014-05-125701-131-1141ND
2014-05-125701-901-1237ND
2014-05-125701-905-1130ND
2014-05-125701-906-1010ND
2014-05-135701-063-1000ND
2014-05-135701-125-0925ND
2014-05-135701-900-1311ND
2014-05-135701-902-1233ND
2014-05-135701-903-1215ND
2014-05-135701-904-1248ND
2014-05-215701-053-1015ND
2014-05-215701-062-1125ND
2014-06-035701-069-1117ND
2014-06-035701-131-2112ND
2014-06-045701-063-1144ND
2014-06-045701-125-1059ND
2014-06-235701-130-0954ND
2014-06-235701-132-1020ND
2014-07-035701-069-1035ND
2014-07-035701-131-1052ND
2014-07-075701-063-0918ND
2014-07-075701-125-0921ND
2014-07-225701-007-1532ND
2014-07-225701-013-1512ND
2014-07-225701-028-1026ND
2014-07-225701-065-0914ND
2014-07-225701-067-1001ND
2014-07-305701-029-1140ND
2014-08-125810-069-1325ND
2014-08-125810-131-1340ND
2014-08-135810-063-1029ND
2014-08-135810-125-0955ND
2014-08-145701-131-0950ND
2014-08-145701-900-1152ND
2014-08-145701-901-1012ND
2014-08-145701-902-1047ND
2014-08-145701-903-1120ND
2014-08-145701-904-1013ND
2014-08-145701-905-0935ND
2014-08-145701-906-1032ND
2014-08-275701-062-1228ND
2014-09-165701-069-0950ND
2014-09-165701-131-0937ND
2014-09-175701-063-1156ND
2014-09-175701-125-1200ND
2014-09-305701-132-1144ND
2014-10-139590-063-1550ND
2014-10-139590-125-1318ND
2014-10-275701-028-1330ND
2014-10-275701-065-1150ND
2014-10-275701-067-1208ND
2014-10-295701-007-1240ND
2014-10-295701-013-1145ND
2014-11-045701-069-0932ND
2014-11-045701-131-0944ND
2014-11-055701-063-1027ND
2014-11-055701-125-1033ND
2014-11-125701-131-1504ND
2014-11-125701-900-1435ND
2014-11-125701-901-1522ND
2014-11-125701-902-1352ND
2014-11-125701-903-1338ND
2014-11-125701-904-1423ND
2014-11-125701-905-1453ND
2014-11-125701-906-1407ND
2014-11-185701-062-1332ND
2014-12-095701-063-1050ND
2014-12-095701-125-1026ND
2014-12-159590-069-1032ND
2014-12-175701-130-1120ND
2014-12-175701-132-1159ND
2015-01-125701-069-1027ND
2015-01-125701-131-1039ND
2015-01-155701-063-0955ND
2015-01-155701-125-0959ND
2015-01-205701-069-1014ND
2015-01-205701-131-1029ND
2015-01-225701-054-1244ND
2015-01-265701-069-1105ND
2015-01-265701-131-1120ND
2015-01-285701-013-1154ND
2015-01-285701-065-1205ND
2015-01-285701-067-11402.45 ppb
2015-02-025701-069-1241ND
2015-02-025701-131-1232ND
2015-02-125701-063-0938ND
2015-02-125701-125-0942ND
2015-02-245701-013-1126ND
2015-02-245701-045-1100ND
2015-02-245701-062-1142ND
2015-02-255701-069-1000ND
2015-02-255701-131-1049ND
2015-02-255701-900-1126ND
2015-02-255701-901-11090.810 ppb
2015-02-255701-902-1210ND
2015-02-255701-903-1230ND
2015-02-255701-904-1146ND
2015-02-255701-905-1028ND
2015-02-255701-906-1244ND
2015-03-035701-069-0804ND
2015-03-035701-131-0805ND
2015-03-105701-063-1345ND
2015-03-105701-069-0926ND
2015-03-105701-125-1325ND
2015-03-105701-131-0926ND
2015-03-165701-069-0847ND
2015-03-165701-131-0848ND
2015-03-235701-069-0830ND
2015-03-235701-131-0831ND
2015-03-305701-069-0957ND
2015-03-305701-131-1017ND
2015-04-085701-051-1223ND
2015-04-145701-063-1150ND
2015-04-145701-125-1130ND
2015-04-155701-065-1035ND
2015-05-129590-063-1035ND
2015-05-129590-125-1020ND
2015-05-135701-131-0854ND
2015-05-135701-900-0854ND
2015-05-135701-901-0854ND
2015-05-135701-902-0854ND
2015-05-135701-903-0854ND
2015-05-135701-904-0854ND
2015-05-135701-905-0854ND
2015-05-135701-906-0854ND
2015-05-215701-007-1650ND
2015-05-215701-028-1240ND
2015-05-215701-062-1325ND
2015-06-095701-063-0954ND
2015-06-095701-125-1025ND
2015-06-165701-055-1406ND
2015-06-165701-058-1535ND
2015-06-165701-069-1030ND
2015-06-165701-131-1040ND
2015-06-165701-132-1348ND
2015-07-145701-063-1030ND
2015-07-145701-125-1015ND
2015-07-225701-056-1112ND
2015-07-225701-065-1145ND
2015-08-115701-131-0655ND
2015-08-115701-900-0655ND
2015-08-115701-901-0655ND
2015-08-115701-902-0655ND
2015-08-115701-903-0655ND
2015-08-115701-904-0655ND
2015-08-115701-905-0655ND
2015-08-115701-906-0655ND
2015-08-161610-133-1900ND
2015-08-265701-063-1300ND
2015-08-265701-125-1303ND
2015-08-305701-062-1138ND
2015-09-095701-063-1018ND
2015-09-095701-125-1021ND
2015-10-155701-060-1235ND
2015-10-155701-063-1154ND
2015-10-155701-125-1150ND
2015-10-275701-050-1026ND
2015-10-275701-065-0930ND
2015-11-045701-063-1123ND
2015-11-045701-125-1103ND
2015-11-195810-059-1048ND
2015-11-205810-131-1200ND
2015-11-205810-900-1025ND
2015-11-205810-901-1135ND
2015-11-205810-902-1245ND
2015-11-205810-903-1117ND
2015-11-205810-904-1046ND
2015-11-205810-905-0948ND
2015-11-205810-906-1100ND
2015-12-075701-062-1103ND
2015-12-085701-063-1206ND
2015-12-085701-125-1215ND
2015-12-095701-018-0535ND
2016-01-135701-063-0956ND
2016-01-135701-125-0949ND
2016-01-205701-065-1305ND
2016-02-035701-063-1215ND
2016-02-035701-125-1200ND
2016-02-175701-131-0725ND
2016-02-175701-900-0725ND
2016-02-175701-901-0725ND
2016-02-175701-902-0725ND
2016-02-175701-903-0725ND
2016-02-175701-904-0725ND
2016-02-175701-905-0725ND
2016-02-175701-906-0725ND
2016-02-235701-013-1306ND
2016-02-235701-061-1135ND
2016-02-235701-062-1347ND
2016-03-095701-063-1024ND
2016-03-095701-125-1004ND
2016-04-125701-063-1324ND
2016-04-125701-125-1304ND
2016-04-135701-051-1140ND
2016-04-135701-065-1115ND
2016-05-105701-063-1037ND
2016-05-105701-125-1042ND
2016-05-105701-131-0724ND
2016-05-105701-900-0724ND
2016-05-105701-901-07240.770 ppb
2016-05-105701-902-0724ND
2016-05-105701-903-0724ND
2016-05-105701-904-0724ND
2016-05-105701-905-0724ND
2016-05-105701-906-0724ND
2016-05-175701-007-1123ND
2016-05-175701-028-1107ND
2016-05-175701-062-1144ND
2016-06-145701-063-1253ND
2016-06-145701-125-1235ND
2016-06-215701-069-1030ND
2016-06-215701-131-1050ND
2016-06-215701-132-1300ND
2016-07-055701-063-1450ND
2016-07-055701-125-1434ND
2016-07-265701-018-1225ND
2016-08-095810-063-1050ND
2016-08-095810-125-1030ND
2016-08-155701-131-1040ND
2016-08-155701-900-1040ND
2016-08-155701-901-1040ND
2016-08-155701-902-1040ND
2016-08-155701-903-1040ND
2016-08-155701-904-1040ND
2016-08-155701-905-1040ND
2016-08-155701-906-1040ND
2016-08-305701-062-1410ND
2016-09-135701-063-1244ND
2016-09-135701-125-1226ND
2016-10-135701-063-1332ND
2016-10-135701-125-1330ND
2016-11-085701-063-1126ND
2016-11-085701-125-1122ND
2016-11-165701-062-1150ND
2016-11-175701-131-0855ND
2016-11-175701-900-0855ND
2016-11-175701-901-0855ND
2016-11-175701-902-0855ND
2016-11-175701-903-0855ND
2016-11-175701-904-0855ND
2016-11-175701-905-0855ND
2016-11-175701-906-0855ND
2016-12-065810-015-1014ND
2016-12-145701-063-1349ND
2016-12-145701-125-1406ND
2017-01-125701-063-1110ND
2017-01-125701-125-1055ND
2017-01-185701-064-1008ND
2017-02-145701-063-1045ND
2017-02-145701-125-1030ND
2017-02-175810-131-0945ND
2017-02-175810-900-1320ND
2017-02-175810-901-1020ND
2017-02-175810-902-1145ND
2017-02-175810-903-1130ND
2017-02-175810-904-1305ND
2017-02-175810-905-0930ND
2017-02-175810-906-1035ND
2017-02-215701-062-1320ND
2017-03-085810-063-1115ND
2017-03-085810-125-1050ND
2017-04-065701-063-1323ND
2017-04-065701-125-1305ND
2017-04-175701-051-1110ND
2017-04-175701-052-1155ND
2017-04-185701-133-1122ND
2017-05-025701-052-1302ND
2017-05-035701-063-1028ND
2017-05-035701-125-1045ND
2017-05-125701-131-0903ND
2017-05-125701-900-0903ND
2017-05-125701-901-0903ND
2017-05-125701-902-0903ND
2017-05-125701-903-0903ND
2017-05-125701-904-0903ND
2017-05-125701-905-0903ND
2017-05-125701-906-0903ND
2017-05-155701-007-1100ND
2017-05-155701-062-1255ND
2017-05-165701-028-1410ND
2017-05-165701-053-1540ND
2017-05-245701-018-1035ND
2017-06-145701-052-1000ND
2017-06-145701-130-1222ND
2017-06-145701-132-1116ND
2017-06-155701-069-1240ND
2017-06-155701-131-1250ND
2017-06-205701-063-1025ND
2017-06-205701-125-1012ND
2017-07-115701-052-1230ND
2017-07-115701-063-1524ND
2017-07-115701-125-1511ND
2017-07-255701-029-1014ND
2017-07-255701-133-1420ND
2017-08-025701-052-1310ND
2017-08-085701-063-1140ND
2017-08-085701-125-1143ND
2017-08-165810-131-1446ND
2017-08-165810-900-1124ND
2017-08-165810-901-1302ND
2017-08-165810-902-1336ND
2017-08-165810-903-1358ND
2017-08-165810-904-1050ND
2017-08-165810-905-1426ND
2017-08-165810-906-1150ND
2017-08-175701-062-1135ND
2017-09-065701-052-1429ND
2017-09-075701-063-1348ND
2017-09-075701-125-1344ND
2017-10-115701-052-1020ND
2017-10-125701-063-1210ND
2017-10-125701-125-1200ND
2017-10-165701-133-1115ND
2017-11-065701-063-1523ND
2017-11-065701-125-1521ND
2017-11-085810-052-0930ND
2017-11-135810-131-1013ND
2017-11-135810-900-1058ND
2017-11-135810-901-1236ND
2017-11-135810-902-1137ND
2017-11-135810-903-1314ND
2017-11-135810-904-1118ND
2017-11-135810-905-1033ND
2017-11-135810-906-1257ND
2017-11-285701-062-0955ND
2017-11-285701-067-1033ND
2017-12-055701-063-1120ND
2017-12-055701-125-1100ND
2018-01-035701-063-1143ND
2018-01-035701-125-1132ND
2018-01-245701-133-1520ND
2018-02-065701-063-1004ND
2018-02-065701-125-1001ND
2018-02-145810-131-1530ND
2018-02-145810-900-0955ND
2018-02-145810-901-1410ND
2018-02-145810-902-1045ND
2018-02-145810-903-1109ND
2018-02-145810-904-1015ND
2018-02-145810-905-1516ND
2018-02-145810-906-1355ND
2018-02-205701-045-1000ND
2018-02-205701-062-1320ND
2018-04-119590-051-1340ND
2018-04-119590-133-1035ND
2018-05-085701-007-1040ND
2018-05-085701-054-1140ND
2018-05-085701-062-1115ND
2018-05-095701-063-1040ND
2018-05-095701-125-1054ND
2018-05-155810-131-0902ND
2018-05-155810-900-1111ND
2018-05-155810-901-1020ND
2018-05-155810-902-1327ND
2018-05-155810-903-1305ND
2018-05-155810-904-1145ND
2018-05-155810-905-0944ND
2018-05-155810-906-1225ND
2018-06-145810-059-1510ND
2018-06-145810-060-1515ND
2018-06-145810-069-1340ND
2018-06-145810-131-1355ND
2018-06-265701-055-1205ND
2018-06-265701-058-1040ND
2018-06-265701-063-1117ND
2018-06-265701-125-1121ND
2018-06-265701-132-1505ND
2018-07-105810-063-1250ND
2018-07-105810-125-1230ND
2018-07-175701-056-1210ND
2018-07-175701-133-1350ND
2018-08-065701-063-1407ND
2018-08-065701-125-1354ND
2018-08-065701-125-1357ND
2018-08-165701-062-1015ND
2018-08-165701-131-1011ND
2018-08-165701-900-1011ND
2018-08-165701-901-1011ND
2018-08-165701-902-1011ND
2018-08-165701-903-1011ND
2018-08-165701-904-1011ND
2018-08-165701-905-1011ND
2018-08-165701-906-1011ND
2018-09-065701-063-1315ND
2018-09-065701-125-1321ND
2018-09-065701-125-1338ND
2018-10-025701-063-1400ND
2018-10-025701-125-1406ND
2018-10-025701-125-1424ND
2018-10-165810-133-1155ND
2018-10-245810-050-1425ND
2018-11-075701-063-1032ND
2018-11-075701-125-1039ND
2018-11-075701-125-1055ND
2018-11-135701-131-0936ND
2018-11-135701-900-0936ND
2018-11-135701-901-0936ND
2018-11-135701-902-0936ND
2018-11-135701-903-0936ND
2018-11-135701-904-0936ND
2018-11-135701-905-0936ND
2018-11-135701-906-0936ND
2018-11-265810-062-1305ND
2018-12-045810-063-1305ND
2018-12-045810-125-1315ND
2019-01-085810-063-1018ND
2019-01-085810-125-1030ND
2019-01-225810-061-1012ND
2019-01-225810-133-1200ND
2019-02-125701-051-1335ND
2019-02-125701-063-1010ND
2019-02-125701-125-1020ND
2019-02-125701-125-1033ND
2019-02-195701-131-0837ND
2019-02-195701-900-0837ND
2019-02-195701-901-0837ND
2019-02-195701-902-0837ND
2019-02-195701-903-0837ND
2019-02-195701-904-0837ND
2019-02-195701-905-0837ND
2019-02-195701-906-0837ND
2019-02-265810-062-1150ND
2019-03-185701-063-1432ND
2019-03-185701-125-1439ND
2019-03-185701-125-1450ND
2019-04-015701-063-1348ND
2019-04-015701-125-1356ND
2019-04-155810-050-1335ND
2019-04-155810-133-1155ND
2019-04-175701-051-1305ND
2019-05-135701-063-0935ND
2019-05-135701-125-1007ND
2019-05-145701-131-0927ND
2019-05-145701-900-0927ND
2019-05-145701-901-0927ND
2019-05-145701-902-0927ND
2019-05-145701-903-0927ND
2019-05-145701-904-0927ND
2019-05-145701-905-0927ND
2019-05-145701-906-0927ND
2019-05-215701-007-1120ND
2019-05-215701-028-1000ND
2019-05-215701-062-1100ND
2019-06-055701-063-1246ND
2019-06-055701-125-1310ND
2019-06-175701-069-0945ND
2019-06-175701-131-1030ND
2019-06-195701-132-1020ND
2019-07-085701-063-1101ND
2019-07-085701-125-1040ND
2019-07-165701-133-1335ND
2019-08-135701-063-1403ND
2019-08-135701-125-1350ND
2019-08-145701-062-1238ND
2019-08-155701-131-1145ND
2019-08-155701-900-0950ND
2019-08-155701-901-1320ND
2019-08-155701-902-1110ND
2019-08-155701-903-1045ND
2019-08-155701-904-1015ND
2019-08-155701-905-1410ND
2019-08-155701-906-1345ND
2019-09-105701-063-1327ND
2019-09-105701-125-1308ND
2019-10-085701-063-1359ND
2019-10-085701-125-1418ND
2019-10-155701-133-1220ND
2019-11-065701-063-1346ND
2019-11-065701-125-1330ND
2019-11-145701-131-1405ND
2019-11-145701-900-1315ND
2019-11-145701-901-1425ND
2019-11-145701-902-1220ND
2019-11-145701-903-1455ND
2019-11-145701-904-1250ND
2019-11-145701-905-1340ND
2019-11-145701-906-1025ND
2019-11-205701-062-1332ND
2019-12-115701-063-1401ND
2019-12-115701-125-1355ND