2,4,5-TP (Silvex)
Iredell Water Corporation
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | ND | 17 | 0 | ND |
2015 | ND | 22 | 0 | ND |
2016 | ND | 29 | 0 | ND |
2017 | ND | 34 | 0 | ND |
2018 | ND | 33 | 0 | ND |
2019 | N/A | 0 | 0 | N/A |
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 |
---|---|---|
2014-03-03 | C401851-01 | ND |
2014-03-03 | C401852-01 | ND |
2014-03-03 | C401853-01 | ND |
2014-03-03 | C401854-01 | ND |
2014-03-03 | C401855-01 | ND |
2014-03-03 | C401856-01 | ND |
2014-03-03 | C401857-01 | ND |
2014-03-03 | C401858-01 | ND |
2014-04-15 | C404959-01RE1 | ND |
2014-08-11 | C410345-01 | ND |
2014-08-11 | C410345-02 | ND |
2014-08-11 | C410345-03 | ND |
2014-08-11 | C410345-04 | ND |
2014-08-11 | C410345-05 | ND |
2014-08-11 | C410345-06 | ND |
2014-08-11 | C410345-07 | ND |
2014-08-11 | C410345-08 | ND |
2015-01-06 | ND | |
2015-02-02 | ND | |
2015-02-02 | ND | |
2015-02-02 | ND | |
2015-02-02 | ND | |
2015-04-14 | ND | |
2015-04-14 | ND | |
2015-05-20 | ND | |
2015-05-20 | ND | |
2015-05-20 | ND | |
2015-07-15 | ND | |
2015-08-12 | ND | |
2015-08-12 | ND | |
2015-08-12 | ND | |
2015-08-12 | ND | |
2015-09-15 | ND | |
2015-09-15 | ND | |
2015-09-15 | ND | |
2015-09-15 | ND | |
2015-10-14 | ND | |
2015-10-14 | ND | |
2015-10-14 | ND | |
2016-01-13 | C511265-01 | ND |
2016-01-13 | C511269-01 | ND |
2016-01-13 | C511270-01 | ND |
2016-02-23 | C516385-01 | ND |
2016-02-23 | C516383-01 | ND |
2016-02-29 | C516380-01 | ND |
2016-03-16 | C511253-01 | ND |
2016-03-16 | C516379-01 | ND |
2016-03-16 | C516386-01 | ND |
2016-03-16 | C516387-01 | ND |
2016-04-26 | C516384-02 | ND |
2016-04-26 | C516384-03 | ND |
2016-04-27 | C516384-01 | ND |
2016-05-11 | C511252-01 | ND |
2016-05-11 | C511254-01 | ND |
2016-05-13 | C516388-01 | ND |
2016-06-21 | CZ06841-01 | ND |
2016-06-21 | CZ06841-02 | ND |
2016-06-21 | CZ06841-03 | ND |
2016-06-21 | CZ06841-04 | ND |
2016-06-21 | CZ06841-05 | ND |
2016-07-06 | CZ02281-01 | ND |
2016-07-06 | CZ02276-01 | ND |
2016-08-25 | CZ08982-01 | ND |
2016-10-04 | CZ08980-01 | ND |
2016-10-04 | CZ08980-02 | ND |
2016-10-04 | CZ08980-03 | ND |
2016-10-04 | CZ08980-04 | ND |
2016-10-04 | CZ08980-05 | ND |
2017-01-18 | CZ15332-01 | ND |
2017-01-18 | CZ15332-02 | ND |
2017-01-18 | CZ15332-03 | ND |
2017-02-22 | CA02157-01 | ND |
2017-02-22 | CA02157-02 | ND |
2017-03-22 | CA02164-01 | ND |
2017-03-22 | CA04812-01 | ND |
2017-03-22 | CA02156-01 | ND |
2017-04-05 | CA05445-01 | ND |
2017-04-05 | CA05445-02 | ND |
2017-04-05 | CA05445-03 | ND |
2017-04-05 | CA05445-04 | ND |
2017-05-24 | CA02159-01 | ND |
2017-05-24 | CZ15328-01 | ND |
2017-05-24 | CA08454-01 | ND |
2017-06-27 | CZ15335-01 | ND |
2017-06-28 | CA10086-01 | ND |
2017-06-28 | CZ15329-01 | ND |
2017-06-28 | CA02162-01 | ND |
2017-07-19 | CA08536-01RE1 | ND |
2017-08-22 | CA08533-01 | ND |
2017-08-22 | CA08535-01 | ND |
2017-09-12 | CA14471-01 | ND |
2017-09-12 | CA14471-02 | ND |
2017-09-12 | CA14471-03 | ND |
2017-10-23 | CA12526-01 | ND |
2017-10-23 | CA12527-01 | ND |
2017-10-23 | CA12528-01 | ND |
2017-10-23 | CA08529-01 | ND |
2017-11-29 | 8709-112917-E06S | ND |
2017-11-29 | 8709-112917-E19S | ND |
2017-11-29 | 8709-112917-E37S | ND |
2017-11-29 | 8709-112917-E38S | ND |
2017-12-05 | CA12529-01 | ND |
2018-01-10 | CA19261-01 | ND |
2018-01-10 | CA19263-01 | ND |
2018-01-10 | CA19264-01 | ND |
2018-01-10 | CA19265-01 | ND |
2018-02-21 | CB02683-01 | ND |
2018-02-21 | CB02684-01 | ND |
2018-02-21 | CB02685-01 | ND |
2018-03-21 | CB00259-01 | ND |
2018-03-21 | CB01716-01 | ND |
2018-03-21 | CB01717-01 | ND |
2018-03-21 | CB01718-01 | ND |
2018-03-21 | CB01719-01 | ND |
2018-04-23 | CB06109-01 | ND |
2018-04-23 | CB06109-02 | ND |
2018-04-23 | CB06109-03 | ND |
2018-05-09 | CB01720-01 | ND |
2018-05-09 | CB01720-02 | ND |
2018-06-27 | CB04873-01 | ND |
2018-06-27 | CB04875-01 | ND |
2018-06-27 | CB10024-01 | ND |
2018-07-12 | CB01715-01 | ND |
2018-07-16 | CB04876-01 | ND |
2018-07-16 | CB04876-02 | ND |
2018-08-29 | CB13291-01 | ND |
2018-08-29 | CB13291-02 | ND |
2018-08-29 | CB13291-03 | ND |
2018-09-26 | CB10736-01 | ND |
2018-09-26 | CB10736-02 | ND |
2018-09-26 | CB10736-03 | ND |
2018-10-09 | CB15905-01 | ND |
2018-11-28 | CB18714-01 | ND |
2018-11-28 | CB18714-02 | ND |
2018-11-28 | CB18714-03 | ND |