o-Dichlorobenzene

Cass County Sanitary and Improvement District #7 - Swallow Hills

NOTE: Cass County Sanitary and Improvement District #7 - Swallow Hills purchases water from Plattsmouth, City of which is required to test for o-dichlorobenzene. Sample information shown below was taken by Plattsmouth, City of.

o-Dichlorobenzene is used as a chemical intermediate for making agricultural herbicides. It is toxic to the liver, kidneys and the nervous system, and causes cancer in animal studies.

MORE ABOUT THIS CONTAMINANT

Samples

Samples exceeding legal limit (MCL)

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Range of results
2014	ND	1	ND
2015	ND	2	ND
2016	ND	1	ND
2017	ND	2	ND
2018	ND	2	ND
2019	ND	1	ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 600 ppb

The EWG Health Guideline of 600 ppb for o-dichlorobenzene 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) 600 ppb

The legal limit for o-dichlorobenzene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1970s.

ppb = parts per billion

All test results

Date	Lab ID	Result
2014-01-21	279104	ND
2015-07-27	375455	ND
2015-07-27	375454	ND
2016-07-18		ND
2016-07-18		ND
2017-01-23		ND
2017-07-24		ND
2018-07-23	563131	ND
2018-07-23	563132	ND
2019-07-29	623641	ND
2019-07-29	623642	ND