2,4,5-TP (Silvex)
California American Water Company - Suburban
2(2,4,5-trichlorophenoxy) propionic acid (2,4,5-TP or Silvex) is a cancer-causing herbicide banned in the U.S. in 1985 because of its toxicity. It is still detected as a groundwater contaminant in areas where it was sprayed or stored.
105
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 |
|---|---|---|---|---|
| 2014 | ND | 3 | 0 | ND |
| 2015 | ND | 48 | 0 | ND |
| 2016 | ND | 1 | 0 | ND |
| 2017 | ND | 2 | 0 | ND |
| 2018 | ND | 48 | 0 | ND |
| 2019 | ND | 3 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 3 ppb
The EWG Health Guideline of 3 ppb for 2,4,5-TP 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) 50 ppb
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-02-27 | 1225-006-1005 | ND |
| 2014-06-17 | 1225-018-1150 | ND |
| 2014-09-29 | 1225-018-0930 | ND |
| 2015-04-06 | 1225-006-1105 | ND |
| 2015-04-06 | 1225-013-0955 | ND |
| 2015-04-06 | 1225-014-1000 | ND |
| 2015-04-06 | 1225-016-1000 | ND |
| 2015-04-06 | 1225-017-1035 | ND |
| 2015-04-06 | 1225-019-0910 | ND |
| 2015-04-06 | 1225-049-0905 | ND |
| 2015-04-07 | 1225-004-1015 | ND |
| 2015-04-07 | 1225-007-1115 | ND |
| 2015-04-07 | 1225-008-1135 | ND |
| 2015-04-07 | 1225-010-1020 | ND |
| 2015-04-07 | 1225-051-1005 | ND |
| 2015-04-07 | 1225-052-1130 | ND |
| 2015-04-08 | 1225-001-0930 | ND |
| 2015-04-08 | 1225-005-1045 | ND |
| 2015-04-08 | 1225-012-0925 | ND |
| 2015-04-08 | 1225-044-0920 | ND |
| 2015-04-09 | 1225-011-0900 | ND |
| 2015-04-15 | 1225-048-0937 | ND |
| 2015-04-23 | 1225-021-1245 | ND |
| 2015-05-12 | 1225-047-1205 | ND |
| 2015-06-18 | 1225-015-1220 | ND |
| 2015-06-18 | 1225-020-1120 | ND |
| 2015-07-08 | 1225-004-0850 | ND |
| 2015-07-08 | 1225-006-0950 | ND |
| 2015-07-08 | 1225-008-0910 | ND |
| 2015-07-08 | 1225-010-1110 | ND |
| 2015-07-08 | 1225-013-1100 | ND |
| 2015-07-08 | 1225-016-1030 | ND |
| 2015-07-08 | 1225-019-0940 | ND |
| 2015-07-08 | 1225-021-1030 | ND |
| 2015-07-09 | 1225-001-0945 | ND |
| 2015-07-09 | 1225-017-1045 | ND |
| 2015-07-14 | 1225-011-1030 | ND |
| 2015-07-15 | 1225-007-0920 | ND |
| 2015-07-15 | 1225-052-1025 | ND |
| 2015-07-20 | 1225-014-0920 | ND |
| 2015-07-20 | 1225-049-1210 | ND |
| 2015-07-22 | 1225-044-0845 | ND |
| 2015-07-22 | 1225-051-1110 | ND |
| 2015-07-27 | 1225-018-1005 | ND |
| 2015-07-27 | 1225-053-1220 | ND |
| 2015-07-28 | 1225-048-0900 | ND |
| 2015-08-26 | 1225-005-0930 | ND |
| 2015-08-27 | 1225-047-0750 | ND |
| 2015-09-21 | 1225-015-1045 | ND |
| 2015-10-26 | 1225-018-1030 | ND |
| 2015-10-26 | 1225-020-0915 | ND |
| 2016-10-24 | 1225-012-0930 | ND |
| 2017-01-31 | 1225-012-0840 | ND |
| 2017-02-27 | 1225-012-1145 | ND |
| 2018-05-01 | 1225-008-1005 | ND |
| 2018-05-01 | 1225-010-1130 | ND |
| 2018-05-01 | 1225-011-0900 | ND |
| 2018-05-01 | 1225-018-0815 | ND |
| 2018-05-01 | 1225-021-1100 | ND |
| 2018-05-01 | 1225-047-0940 | ND |
| 2018-05-01 | 1225-049-1237 | ND |
| 2018-05-01 | 1225-051-1145 | ND |
| 2018-05-02 | 1225-001-0840 | ND |
| 2018-05-02 | 1225-004-1045 | ND |
| 2018-05-02 | 1225-005-0916 | ND |
| 2018-05-02 | 1225-007-1130 | ND |
| 2018-05-02 | 1225-013-1000 | ND |
| 2018-05-02 | 1225-016-0903 | ND |
| 2018-05-02 | 1225-019-1011 | ND |
| 2018-05-02 | 1225-020-1232 | ND |
| 2018-05-02 | 1225-044-1028 | ND |
| 2018-05-02 | 1225-052-1210 | ND |
| 2018-05-03 | 1225-006-1053 | ND |
| 2018-05-03 | 1225-017-1215 | ND |
| 2018-05-08 | 1225-012-1015 | ND |
| 2018-05-08 | 1225-014-1310 | ND |
| 2018-05-08 | 1225-053-0845 | ND |
| 2018-08-06 | 9590-005-0810 | ND |
| 2018-08-06 | 9590-014-1053 | ND |
| 2018-08-06 | 9590-018-0915 | ND |
| 2018-08-06 | 9590-020-1240 | ND |
| 2018-08-06 | 9590-051-1230 | ND |
| 2018-08-08 | 9590-007-0945 | ND |
| 2018-08-08 | 9590-011-1305 | ND |
| 2018-08-08 | 9590-044-1110 | ND |
| 2018-08-08 | 9590-047-1230 | ND |
| 2018-08-09 | 9590-004-0905 | ND |
| 2018-08-09 | 9590-006-1300 | ND |
| 2018-08-09 | 9590-016-0815 | ND |
| 2018-08-09 | 9590-049-1100 | ND |
| 2018-08-09 | 9590-052-1252 | ND |
| 2018-08-13 | 9590-001-0850 | ND |
| 2018-08-13 | 9590-010-1140 | ND |
| 2018-08-13 | 9590-013-1015 | ND |
| 2018-08-13 | 9590-017-0900 | ND |
| 2018-08-13 | 9590-019-1015 | ND |
| 2018-08-13 | 9590-021-1020 | ND |
| 2018-08-14 | 9590-012-1130 | ND |
| 2018-08-14 | 9590-053-0905 | ND |
| 2018-09-11 | 9590-009-0845 | ND |
| 2018-10-17 | 9590-008-1030 | ND |
| 2018-12-12 | 1225-009-0915 | ND |
| 2019-08-12 | 1225-015-1215 | ND |
| 2019-08-12 | 1225-050-1435 | ND |
| 2019-11-12 | 1225-050-1532 | ND |