1,1-Dichloroethylene
City of Porterville
1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.
122
Samples
0
Samples exceeding legal limit (MCL)
0
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | N/A | 0 | 0 | N/A |
| 2014 | 0.110 ppb | 41 | 5 | ND - 1.30 ppb |
| 2015 | 0.267 ppb | 9 | 3 | ND - 1.10 ppb |
| 2016 | 0.489 ppb | 9 | 6 | ND - 1.50 ppb |
| 2017 | 0.129 ppb | 42 | 8 | ND - 1.20 ppb |
| 2018 | 0.408 ppb | 12 | 7 | ND - 0.800 ppb |
| 2019 | 0.189 ppb | 9 | 3 | ND - 0.700 ppb |
ppb = parts per billion
State and national drinking water standards and health guidelines
EPA Maximum Contaminant
Level (MCL) 7 ppb
The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-05 | 1653-079-0917 | 0.800 ppb |
| 2014-02-05 | 1653-086-0829 | 0.700 ppb |
| 2014-03-24 | 1653-005-1415 | ND |
| 2014-03-24 | 1653-008-1335 | ND |
| 2014-03-24 | 1653-013-1305 | ND |
| 2014-03-24 | 1653-018-1400 | ND |
| 2014-03-24 | 1653-019-1235 | ND |
| 2014-03-24 | 1653-020-1010 | ND |
| 2014-03-24 | 1653-021-1130 | ND |
| 2014-03-24 | 1653-033-0945 | ND |
| 2014-03-24 | 1653-039-1030 | ND |
| 2014-03-24 | 1653-056-1105 | ND |
| 2014-03-27 | 1653-003-1350 | ND |
| 2014-03-27 | 1653-022-1125 | ND |
| 2014-03-27 | 1653-049-1005 | ND |
| 2014-03-27 | 1653-079-1225 | 0.700 ppb |
| 2014-03-27 | 1653-082-1325 | ND |
| 2014-03-27 | 1653-086-1255 | ND |
| 2014-03-27 | 1653-088-1055 | ND |
| 2014-03-27 | 1653-096-0940 | ND |
| 2014-05-13 | 1653-014-1210 | ND |
| 2014-05-13 | 1653-026-1255 | ND |
| 2014-05-13 | 1653-037-1330 | ND |
| 2014-05-13 | 1653-090-1000 | ND |
| 2014-05-13 | 1653-092-1055 | ND |
| 2014-05-13 | 1653-096-1028 | ND |
| 2014-05-14 | 1653-010-1033 | ND |
| 2014-05-14 | 1653-024-1237 | ND |
| 2014-05-14 | 1653-025-0958 | ND |
| 2014-05-14 | 1653-032-1339 | ND |
| 2014-05-14 | 1653-054-0926 | ND |
| 2014-05-15 | 1653-006-1100 | ND |
| 2014-05-15 | 1653-009-1205 | ND |
| 2014-05-15 | 1653-023-0935 | ND |
| 2014-05-15 | 1653-040-1315 | ND |
| 2014-05-28 | 1653-079-0841 | 1.30 ppb |
| 2014-05-28 | 1653-086-0823 | 1.000 ppb |
| 2014-08-12 | 1653-079-1228 | ND |
| 2014-08-12 | 1653-086-1256 | ND |
| 2014-11-05 | 1653-079-0841 | ND |
| 2014-11-05 | 1653-086-0817 | ND |
| 2015-02-10 | 1653-079-0957 | 0.600 ppb |
| 2015-02-10 | 1653-086-0839 | ND |
| 2015-05-12 | 1653-079-0924 | ND |
| 2015-05-12 | 1653-086-0859 | 0.700 ppb |
| 2015-08-11 | 1653-079-0926 | ND |
| 2015-08-11 | 1653-086-0903 | ND |
| 2015-11-17 | 1653-079-0953 | 1.10 ppb |
| 2015-11-17 | 1653-086-0906 | ND |
| 2015-12-09 | 1653-100-0915 | ND |
| 2016-02-09 | 1653-079-1348 | 1.50 ppb |
| 2016-02-09 | 1653-086-1414 | 0.600 ppb |
| 2016-03-11 | 1653-098-0916 | ND |
| 2016-05-11 | 1653-079-1417 | 0.500 ppb |
| 2016-05-11 | 1653-086-1339 | 0.600 ppb |
| 2016-08-16 | 1653-079-0938 | ND |
| 2016-08-16 | 1653-086-0959 | 0.500 ppb |
| 2016-11-08 | 1653-079-1334 | ND |
| 2016-11-08 | 1653-086-1021 | 0.700 ppb |
| 2017-02-14 | 1653-079-0958 | ND |
| 2017-02-14 | 1653-086-1043 | 0.600 ppb |
| 2017-03-15 | 1653-003-1426 | ND |
| 2017-03-15 | 1653-005-1404 | ND |
| 2017-03-15 | 1653-008-1449 | ND |
| 2017-03-15 | 1653-019-0920 | ND |
| 2017-03-15 | 1653-020-0827 | ND |
| 2017-03-15 | 1653-021-0943 | ND |
| 2017-03-15 | 1653-022-1344 | ND |
| 2017-03-15 | 1653-039-0851 | ND |
| 2017-03-15 | 1653-049-1034 | ND |
| 2017-03-15 | 1653-082-1327 | ND |
| 2017-03-15 | 1653-086-1158 | 0.600 ppb |
| 2017-03-15 | 1653-096-1009 | ND |
| 2017-03-16 | 1653-013-1225 | ND |
| 2017-03-16 | 1653-018-1154 | ND |
| 2017-03-16 | 1653-024-1020 | ND |
| 2017-03-16 | 1653-025-1059 | ND |
| 2017-03-16 | 1653-033-1413 | ND |
| 2017-03-16 | 1653-056-1341 | ND |
| 2017-03-16 | 1653-079-1303 | 1.20 ppb |
| 2017-03-16 | 1653-088-0938 | ND |
| 2017-03-16 | 1653-098-0917 | ND |
| 2017-03-16 | 1653-100-1454 | ND |
| 2017-03-20 | 5867-100-0815 | ND |
| 2017-05-10 | 1653-006-1345 | ND |
| 2017-05-10 | 1653-009-0926 | ND |
| 2017-05-10 | 1653-010-1204 | ND |
| 2017-05-10 | 1653-014-0958 | ND |
| 2017-05-10 | 1653-023-1027 | ND |
| 2017-05-10 | 1653-026-0841 | ND |
| 2017-05-10 | 1653-032-1136 | ND |
| 2017-05-10 | 1653-054-1446 | ND |
| 2017-05-10 | 1653-090-1103 | ND |
| 2017-05-10 | 1653-092-0859 | ND |
| 2017-05-11 | 1653-040-1257 | ND |
| 2017-05-16 | 1653-079-1136 | 0.500 ppb |
| 2017-05-16 | 1653-086-1031 | 0.700 ppb |
| 2017-08-22 | 1653-079-1012 | 0.500 ppb |
| 2017-08-22 | 1653-086-1037 | ND |
| 2017-11-15 | 1653-079-1058 | 0.600 ppb |
| 2017-11-15 | 1653-086-1033 | 0.700 ppb |
| 2018-02-13 | 1653-079-0956 | 0.500 ppb |
| 2018-02-13 | 1653-086-1018 | ND |
| 2018-02-14 | 1653-098-1408 | ND |
| 2018-02-14 | 1653-100-1431 | ND |
| 2018-03-07 | 1653-098-1112 | ND |
| 2018-03-07 | 1653-100-1036 | ND |
| 2018-05-16 | 1653-079-1113 | 0.800 ppb |
| 2018-05-16 | 1653-086-1356 | 0.800 ppb |
| 2018-08-14 | 1653-079-1458 | 0.700 ppb |
| 2018-08-14 | 1653-086-1031 | 0.600 ppb |
| 2018-11-02 | 1653-079-1443 | 0.700 ppb |
| 2018-11-02 | 1653-086-1427 | 0.800 ppb |
| 2019-02-25 | 1653-079-1406 | 0.700 ppb |
| 2019-02-25 | 1653-086-1433 | ND |
| 2019-02-28 | 1653-098-1044 | ND |
| 2019-02-28 | 1653-100-0821 | ND |
| 2019-05-21 | 1653-079-1117 | 0.500 ppb |
| 2019-05-21 | 1653-086-1416 | ND |
| 2019-08-20 | 1653-079-1058 | 0.500 ppb |
| 2019-11-19 | 1653-079-1321 | ND |
| 2019-11-19 | 1653-086-1410 | ND |