trans-1,2-Dichloroethylene
California American Water Company - Parkway
1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 67 | 0 | ND |
2015 | ND | 43 | 0 | ND |
2016 | ND | 41 | 0 | ND |
2017 | ND | 32 | 0 | ND |
2018 | ND | 60 | 0 | ND |
2019 | ND | 6 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 60 ppb
The EWG Health Guideline of 60 ppb for trans-1,2-dichloroethylene 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 harm to internal organs.
EPA Maximum Contaminant
Level (MCL) 100 ppb
The legal limit for trans-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.
ppb = parts per billion
All test results
Date | Lab ID | Result |
---|---|---|
2014-01-15 | 1225-003-1010 | ND |
2014-01-22 | 1225-012-1210 | ND |
2014-01-22 | 1225-029-1216 | ND |
2014-01-22 | 1225-030-1218 | ND |
2014-02-19 | 1225-013-1212 | ND |
2014-02-19 | 1225-018-0930 | ND |
2014-02-19 | 1225-024-1000 | ND |
2014-02-19 | 1225-026-1048 | ND |
2014-02-19 | 1225-034-1125 | ND |
2014-02-20 | 1225-003-1158 | ND |
2014-02-26 | 1225-012-1122 | ND |
2014-02-26 | 1225-029-1132 | ND |
2014-02-26 | 1225-030-1142 | ND |
2014-03-11 | 1225-003-1025 | ND |
2014-03-11 | 1225-012-1050 | ND |
2014-03-11 | 1225-029-1057 | ND |
2014-03-11 | 1225-030-1105 | ND |
2014-04-02 | 1225-003-1130 | ND |
2014-04-08 | 1225-012-1056 | ND |
2014-04-08 | 1225-029-1102 | ND |
2014-04-08 | 1225-030-1111 | ND |
2014-05-07 | 1225-018-1135 | ND |
2014-05-07 | 1225-024-1100 | ND |
2014-05-07 | 1225-026-1120 | ND |
2014-05-07 | 1225-034-1200 | ND |
2014-05-08 | 1225-003-1110 | ND |
2014-05-08 | 1225-012-0850 | ND |
2014-05-08 | 1225-029-0855 | ND |
2014-05-08 | 1225-030-0900 | ND |
2014-05-13 | 1225-013-1330 | ND |
2014-06-23 | 1225-003-1145 | ND |
2014-06-25 | 1225-012-1010 | ND |
2014-06-25 | 1225-029-1015 | ND |
2014-06-25 | 1225-030-1020 | ND |
2014-07-08 | 1225-003-1105 | ND |
2014-08-04 | 1225-032-1120 | ND |
2014-08-04 | 1225-033-1020 | ND |
2014-08-04 | 1225-034-1315 | ND |
2014-08-05 | 1225-021-1145 | ND |
2014-08-05 | 1225-022-1155 | ND |
2014-08-05 | 1225-023-1210 | ND |
2014-08-05 | 1225-025-1225 | ND |
2014-08-11 | 1225-006-1140 | ND |
2014-08-11 | 1225-016-0930 | ND |
2014-08-11 | 1225-018-1205 | ND |
2014-08-11 | 1225-024-1225 | ND |
2014-08-11 | 1225-026-1110 | ND |
2014-08-12 | 1225-002-0950 | ND |
2014-08-12 | 1225-008-0920 | ND |
2014-08-12 | 1225-011-1110 | ND |
2014-08-12 | 1225-014-1030 | ND |
2014-08-12 | 1225-015-1150 | ND |
2014-08-12 | 1225-017-1115 | ND |
2014-08-14 | 1225-003-1130 | ND |
2014-08-14 | 1225-013-0840 | ND |
2014-09-10 | 1225-003-1305 | ND |
2014-10-28 | 1225-003-1100 | ND |
2014-11-24 | 1225-003-1020 | ND |
2014-12-02 | 1225-018-1300 | ND |
2014-12-02 | 1225-024-1240 | ND |
2014-12-02 | 1225-026-1250 | ND |
2014-12-02 | 1225-034-1230 | ND |
2014-12-16 | 1225-013-1050 | ND |
2014-12-18 | 1225-003-1020 | ND |
2014-12-18 | 1225-012-1100 | ND |
2014-12-18 | 1225-029-1105 | ND |
2014-12-18 | 1225-030-1110 | ND |
2015-01-27 | 1225-003-0935 | ND |
2015-02-10 | 1225-013-1120 | ND |
2015-02-10 | 1225-018-1020 | ND |
2015-02-10 | 1225-024-1040 | ND |
2015-02-10 | 1225-026-0950 | ND |
2015-02-10 | 1225-034-1415 | ND |
2015-02-11 | 1225-003-1003 | ND |
2015-03-17 | 1225-003-1215 | ND |
2015-04-13 | 1225-013-1140 | ND |
2015-04-23 | 1225-018-0925 | ND |
2015-04-23 | 1225-024-1020 | ND |
2015-04-23 | 1225-026-0950 | ND |
2015-04-23 | 1225-034-1040 | ND |
2015-04-28 | 1225-003-1005 | ND |
2015-05-28 | 1225-003-1235 | ND |
2015-06-24 | 1225-003-0945 | ND |
2015-07-15 | 1225-002-0940 | ND |
2015-07-20 | 1225-003-1030 | ND |
2015-07-20 | 1225-008-0930 | ND |
2015-07-20 | 1225-013-0845 | ND |
2015-07-20 | 1225-024-1150 | ND |
2015-07-20 | 1225-034-1130 | ND |
2015-07-22 | 1225-018-0925 | ND |
2015-07-22 | 1225-026-1000 | ND |
2015-08-11 | 1225-006-1500 | ND |
2015-08-11 | 1225-015-0900 | ND |
2015-08-11 | 1225-016-0915 | ND |
2015-08-11 | 1225-017-0900 | ND |
2015-08-11 | 1225-033-0925 | ND |
2015-08-17 | 1225-003-1030 | ND |
2015-08-17 | 1225-011-0950 | ND |
2015-08-17 | 1225-014-1335 | ND |
2015-08-19 | 1225-021-1030 | ND |
2015-08-19 | 1225-022-1040 | ND |
2015-08-19 | 1225-023-1055 | ND |
2015-08-19 | 1225-032-1020 | ND |
2015-09-15 | 1225-003-1000 | ND |
2015-09-22 | 1225-025-1245 | ND |
2015-10-26 | 1225-003-1320 | ND |
2015-10-27 | 1225-018-1510 | ND |
2015-10-27 | 1225-024-1420 | ND |
2015-11-18 | 1225-003-1114 | ND |
2015-12-02 | 1225-003-1203 | ND |
2016-01-27 | 1225-003-1035 | ND |
2016-02-10 | 1225-003-0958 | ND |
2016-02-16 | 1225-018-0900 | ND |
2016-02-16 | 1225-024-0850 | ND |
2016-02-16 | 1225-034-0915 | ND |
2016-03-22 | 1225-003-1043 | ND |
2016-03-22 | 1225-026-1130 | ND |
2016-04-11 | 1225-003-1052 | ND |
2016-04-11 | 1225-018-1350 | ND |
2016-04-11 | 1225-026-1320 | ND |
2016-04-28 | 1225-034-1130 | ND |
2016-05-10 | 1225-003-1132 | ND |
2016-06-08 | 1225-003-1020 | ND |
2016-06-14 | 1225-024-0815 | ND |
2016-07-06 | 1225-002-0815 | ND |
2016-07-06 | 1225-008-0737 | ND |
2016-07-06 | 1225-011-0900 | ND |
2016-07-06 | 1225-015-1040 | ND |
2016-07-07 | 1225-003-0810 | ND |
2016-07-12 | 1225-016-0915 | ND |
2016-07-12 | 1225-017-0925 | ND |
2016-07-12 | 1225-021-1015 | ND |
2016-07-12 | 1225-022-1030 | ND |
2016-07-12 | 1225-023-1000 | ND |
2016-07-12 | 1225-025-1055 | ND |
2016-07-12 | 1225-032-1120 | ND |
2016-07-12 | 1225-033-0940 | ND |
2016-07-25 | 1225-006-1150 | ND |
2016-07-25 | 1225-018-1115 | ND |
2016-07-25 | 1225-026-1130 | ND |
2016-07-25 | 1225-034-1220 | ND |
2016-07-27 | 1225-024-1130 | ND |
2016-08-17 | 1225-003-1058 | ND |
2016-09-15 | 1225-003-1103 | ND |
2016-10-10 | 1225-018-0842 | ND |
2016-10-10 | 1225-024-0900 | ND |
2016-10-10 | 1225-026-0825 | ND |
2016-10-10 | 1225-034-0910 | ND |
2016-10-19 | 1225-003-1051 | ND |
2016-11-08 | 1225-003-1230 | ND |
2016-12-19 | 1225-003-1146 | ND |
2017-02-13 | 1225-003-0911 | ND |
2017-02-15 | 1225-018-0903 | ND |
2017-02-15 | 1225-024-1233 | ND |
2017-02-15 | 1225-034-0853 | ND |
2017-04-11 | 1225-034-0908 | ND |
2017-05-08 | 1225-024-1355 | ND |
2017-05-09 | 1225-003-1145 | ND |
2017-05-09 | 1225-018-0955 | ND |
2017-08-15 | 1225-002-1125 | ND |
2017-08-15 | 1225-003-1105 | ND |
2017-08-15 | 1225-008-1200 | ND |
2017-08-15 | 1225-011-1030 | ND |
2017-08-15 | 1225-015-0950 | ND |
2017-08-15 | 1225-016-0934 | ND |
2017-08-15 | 1225-017-1012 | ND |
2017-08-15 | 1225-033-0942 | ND |
2017-08-16 | 1225-018-1223 | ND |
2017-08-16 | 1225-021-0853 | ND |
2017-08-16 | 1225-023-0933 | ND |
2017-08-16 | 1225-024-1141 | ND |
2017-08-16 | 1225-025-0953 | ND |
2017-08-16 | 1225-026-1206 | ND |
2017-08-16 | 1225-032-0843 | ND |
2017-08-16 | 1225-034-1130 | ND |
2017-09-28 | 1225-013-1150 | ND |
2017-11-13 | 1225-003-1232 | ND |
2017-11-13 | 1225-018-1125 | ND |
2017-11-13 | 1225-024-1045 | ND |
2017-11-13 | 1225-034-1030 | ND |
2017-12-06 | 1225-006-0955 | ND |
2017-12-06 | 1225-013-1030 | ND |
2017-12-06 | 1225-014-1330 | ND |
2018-01-10 | 1225-030-1110 | ND |
2018-02-13 | 1225-022-0910 | ND |
2018-02-14 | 1225-003-1052 | ND |
2018-02-14 | 1225-012-1123 | ND |
2018-02-14 | 1225-029-1127 | ND |
2018-02-14 | 1225-030-1132 | ND |
2018-02-19 | 1225-018-0930 | ND |
2018-02-19 | 1225-024-0905 | ND |
2018-02-19 | 1225-034-0920 | ND |
2018-03-12 | 1225-012-1218 | ND |
2018-03-12 | 1225-029-1222 | ND |
2018-03-12 | 1225-030-1225 | ND |
2018-03-30 | 1225-013-1200 | ND |
2018-04-04 | 1225-012-1100 | ND |
2018-04-04 | 1233-012-1100 | ND |
2018-04-04 | 1233-029-1108 | ND |
2018-04-04 | 1225-029-1110 | ND |
2018-04-04 | 1225-030-1115 | ND |
2018-04-04 | 1233-030-1115 | ND |
2018-05-01 | 1225-003-1113 | ND |
2018-05-03 | 1225-012-1005 | ND |
2018-05-03 | 1233-012-1020 | ND |
2018-05-03 | 1225-018-1000 | ND |
2018-05-03 | 1225-024-1015 | ND |
2018-05-03 | 1225-029-1013 | ND |
2018-05-03 | 1233-029-1025 | ND |
2018-05-03 | 1233-030-1030 | ND |
2018-05-03 | 1225-034-0950 | ND |
2018-06-18 | 1225-012-1225 | ND |
2018-06-18 | 1225-029-1230 | ND |
2018-06-19 | 1225-013-1315 | ND |
2018-07-19 | 1233-012-1045 | ND |
2018-07-19 | 1233-029-1050 | ND |
2018-07-19 | 1233-030-1055 | ND |
2018-08-08 | 1225-002-1110 | ND |
2018-08-08 | 1233-012-1210 | ND |
2018-08-08 | 1233-029-1215 | ND |
2018-08-08 | 1233-030-1220 | ND |
2018-08-09 | 1225-006-1140 | ND |
2018-08-09 | 1225-016-0930 | ND |
2018-08-09 | 1225-017-0835 | ND |
2018-08-14 | 1225-008-1110 | ND |
2018-08-14 | 1225-011-0900 | ND |
2018-08-14 | 1225-013-1145 | ND |
2018-08-14 | 1225-015-1020 | ND |
2018-08-14 | 1225-021-1005 | ND |
2018-08-14 | 1225-022-0910 | ND |
2018-08-14 | 1225-023-0830 | ND |
2018-08-14 | 1225-025-0740 | ND |
2018-08-15 | 1225-018-1210 | ND |
2018-08-15 | 1225-024-1250 | ND |
2018-08-15 | 1225-026-1210 | ND |
2018-08-15 | 1225-032-0905 | ND |
2018-08-16 | 1225-033-0755 | ND |
2018-09-18 | 1233-012-0935 | ND |
2018-09-18 | 1233-029-0940 | ND |
2018-09-18 | 1233-030-0945 | ND |
2018-10-10 | 1233-012-1130 | ND |
2018-10-10 | 1233-029-1135 | ND |
2018-10-10 | 1233-030-1140 | ND |
2019-02-11 | 1225-034-1310 | ND |
2019-02-18 | 1233-012-1315 | ND |
2019-02-18 | 1233-029-1320 | ND |
2019-02-18 | 1233-030-1325 | ND |
2019-08-05 | 1225-033-1150 | ND |
2019-08-06 | 1225-032-1050 | ND |