1,2,4-Trichlorobenzene
Audubon Water Company
1,2,4-Trichlorobenzene is an industrial solvent that can harm the adrenal glands and may increase the risk of cancer.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | ND | 22 | 0 | ND |
| 2015 | ND | 24 | 0 | ND |
| 2016 | ND | 24 | 0 | ND |
| 2017 | ND | 23 | 0 | ND |
| 2018 | ND | 23 | 0 | ND |
| 2019 | ND | 22 | 0 | ND |
ppb = parts per billion
State and national drinking water standards and health guidelines
EWG Health Guideline 5 ppb
The EWG Health Guideline of 5 ppb for 1,2,4-trichlorobenzene 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 hormone disruption.
EPA Maximum Contaminant
Level (MCL) 70 ppb
The legal limit for 1,2,4-trichlorobenzene, established in 1992, was based on a toxicity study in laboratory animals conducted in 1981. This limit may not fully protect against hormone disruption.
ppb = parts per billion
All test results
| Date | Lab ID | Result |
|---|---|---|
| 2014-01-13 | 1066988001 | ND |
| 2014-01-13 | 1066988002 | ND |
| 2014-01-13 | 1066988003 | ND |
| 2014-02-27 | 1073775001 | ND |
| 2014-04-02 | 1079479001 | ND |
| 2014-04-02 | 1079479002 | ND |
| 2014-04-02 | 1079479004 | ND |
| 2014-04-02 | 1079479003 | ND |
| 2014-04-23 | 2003262001 | ND |
| 2014-04-23 | 2003262002 | ND |
| 2014-08-28 | 2026276001 | ND |
| 2014-08-28 | 2026276002 | ND |
| 2014-08-28 | 2026276003 | ND |
| 2014-09-09 | 2028135001 | ND |
| 2014-09-09 | 2028135002 | ND |
| 2014-09-09 | 2028135003 | ND |
| 2014-10-06 | 2032858001 | ND |
| 2014-10-06 | 2032858002 | ND |
| 2014-10-06 | 2032858003 | ND |
| 2014-10-06 | 2032858004 | ND |
| 2014-11-06 | 2038813001 | ND |
| 2014-11-06 | 2038814001 | ND |
| 2015-03-10 | 12517678 | ND |
| 2015-03-10 | 12517741 | ND |
| 2015-03-10 | 12517720 | ND |
| 2015-03-10 | 12517699 | ND |
| 2015-03-18 | 12517762 | ND |
| 2015-03-18 | 12517783 | ND |
| 2015-03-18 | 12517804 | ND |
| 2015-03-26 | 12635374 | ND |
| 2015-06-01 | 12751837 | ND |
| 2015-06-01 | 12751858 | ND |
| 2015-06-01 | 12751879 | ND |
| 2015-06-01 | 12751900 | ND |
| 2015-06-05 | 12884482 | ND |
| 2015-09-17 | 13266505 | ND |
| 2015-09-17 | 13266526 | ND |
| 2015-09-17 | 13266547 | ND |
| 2015-09-17 | 13266568 | ND |
| 2015-09-24 | 13266589 | ND |
| 2015-10-19 | 13391323 | ND |
| 2015-11-19 | 13515903 | ND |
| 2015-11-19 | 13515924 | ND |
| 2015-11-19 | 13515945 | ND |
| 2015-11-19 | 13515966 | ND |
| 2015-11-19 | 13515987 | ND |
| 2016-02-05 | 13872274 | ND |
| 2016-02-05 | 13872295 | ND |
| 2016-02-05 | 13872316 | ND |
| 2016-02-05 | 13872337 | ND |
| 2016-03-17 | 13988319 | ND |
| 2016-04-04 | 13988350 | ND |
| 2016-04-04 | 13988371 | ND |
| 2016-04-04 | 13988392 | ND |
| 2016-04-04 | 13988413 | ND |
| 2016-04-13 | 14105401 | ND |
| 2016-04-13 | 14105422 | ND |
| 2016-04-22 | 14572544 | ND |
| 2016-04-25 | 14572565 | ND |
| 2016-09-16 | 14910423 | ND |
| 2016-09-16 | 14910444 | ND |
| 2016-09-16 | 14910465 | ND |
| 2016-09-16 | 14910486 | ND |
| 2016-09-29 | 14910805 | ND |
| 2016-10-05 | 15078218 | ND |
| 2016-10-05 | 15078239 | ND |
| 2016-10-05 | 15078260 | ND |
| 2016-10-05 | 15078281 | ND |
| 2016-10-05 | 15078302 | ND |
| 2016-12-08 | 15374261 | ND |
| 2017-01-17 | 15519937 | ND |
| 2017-02-10 | 15657981 | ND |
| 2017-02-10 | 15658002 | ND |
| 2017-02-10 | 15658023 | ND |
| 2017-02-10 | 15658044 | ND |
| 2017-02-10 | 15658065 | ND |
| 2017-02-23 | 15658086 | ND |
| 2017-05-05 | 15940554 | ND |
| 2017-05-05 | 15940575 | ND |
| 2017-05-05 | 15940596 | ND |
| 2017-05-05 | 15940617 | ND |
| 2017-09-19 | 16729578 | ND |
| 2017-09-19 | 16729599 | ND |
| 2017-09-19 | 16729620 | ND |
| 2017-09-19 | 16729641 | ND |
| 2017-09-20 | 16729662 | ND |
| 2017-09-25 | 16729683 | ND |
| 2017-10-02 | 16729803 | ND |
| 2017-10-02 | 16729824 | ND |
| 2017-10-02 | 16729845 | ND |
| 2017-10-02 | 16729866 | ND |
| 2017-10-05 | 16882758 | ND |
| 2017-10-17 | 16882921 | ND |
| 2018-03-02 | 2299268001 | ND |
| 2018-03-02 | 2299268002 | ND |
| 2018-03-02 | 2299268003 | ND |
| 2018-03-02 | 2299268004 | ND |
| 2018-03-28 | 2305330001 | ND |
| 2018-04-01 | 2306020001 | ND |
| 2018-04-02 | 2306020002 | ND |
| 2018-04-02 | 2306020003 | ND |
| 2018-04-02 | 2306020004 | ND |
| 2018-04-02 | 2306020005 | ND |
| 2018-09-17 | 2338753001 | ND |
| 2018-09-17 | 2338753002 | ND |
| 2018-09-17 | 2338753003 | ND |
| 2018-09-17 | 2338753004 | ND |
| 2018-09-17 | 2338753005 | ND |
| 2018-09-18 | 2339343001 | ND |
| 2018-09-20 | 2339702001 | ND |
| 2018-09-21 | 2340025001 | ND |
| 2018-10-01 | 2341512001 | ND |
| 2018-10-01 | 2341512002 | ND |
| 2018-10-01 | 2341512003 | ND |
| 2018-10-01 | 2341512004 | ND |
| 2018-10-24 | 2346425001 | ND |
| 2019-03-22 | 3023817002 | ND |
| 2019-03-22 | 3023817001 | ND |
| 2019-03-22 | 3023817005 | ND |
| 2019-03-22 | 3023817003 | ND |
| 2019-03-22 | 3023817006 | ND |
| 2019-03-22 | 3023817004 | ND |
| 2019-04-10 | 3027288001 | ND |
| 2019-04-10 | 3027288003 | ND |
| 2019-04-10 | 3027288005 | ND |
| 2019-04-10 | 3027288007 | ND |
| 2019-04-24 | 3029820001 | ND |
| 2019-07-25 | 3047779001 | ND |
| 2019-07-25 | 3047779003 | ND |
| 2019-07-25 | 3047779005 | ND |
| 2019-07-25 | 3047779007 | ND |
| 2019-08-05 | 3049543001 | ND |
| 2019-10-16 | 3064410005 | ND |
| 2019-10-16 | 3064409001 | ND |
| 2019-10-16 | 3064410001 | ND |
| 2019-10-16 | 3064410003 | ND |
| 2019-10-16 | 3064410007 | ND |
| 2019-10-22 | 3065363001 | ND |