Nitrate

Trico Water Company

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

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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	5	ND
2015	ND	5	ND
2016	ND	5	ND
2017	ND	5	ND
2018	ND	5	ND
2019	ND	5	ND

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.

EPA Maximum Contaminant
Level (MCL) 10 ppm

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date	Lab ID	Result
2014-04-28	AD38954	ND
2014-04-28	AD38959	ND
2014-04-28	AD38961	ND
2014-04-28	AD38963	ND
2014-04-28	AD38952	ND
2015-05-27	AD55957	ND
2015-05-27	AD55956	ND
2015-05-27	AD55955	ND
2015-05-27	AD55954	ND
2015-05-27	AD55953	ND
2016-04-04	AD73580	ND
2016-04-04	AD73578	ND
2016-04-04	AD73577	ND
2016-04-04	AD73579	ND
2016-04-04	AD73581	ND
2017-04-06	AD92266	ND
2017-04-06	AD92285	ND
2017-04-06	AD92236	ND
2017-04-06	AD92264	ND
2017-04-06	AD92263	ND
2018-05-08	AE11890	ND
2018-05-08	AE11891	ND
2018-05-08	AE11892	ND
2018-05-08	AE11893	ND
2018-05-08	AE11889	ND
2019-06-11	AE31784	ND
2019-06-11	AE31785	ND
2019-06-11	AE31786	ND
2019-06-11	AE31787	ND
2019-06-11	AE31788	ND