Nitrate and nitrite

Brunswick

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

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	5	ND
2015	ND	5	ND
2016	ND	5	ND
2017	ND	7	ND
2018	ND	7	ND
2019	ND	7	ND

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The health guideline of 0.14 parts per million, or ppm, for nitrate and nitrite is based on the equivalent health guideline for nitrate, as defined in a peer-reviewed scientific study by EWG. This guideline represents a one-in-one-million annual cancer risk level.

EPA Maximum Contaminant
Level (MCL) 10 ppm

ppm = parts per million

All test results

Date	Lab ID	Result
2014-05-06	AI39922	ND
2014-05-06	AI39921	ND
2014-05-06	AI39920	ND
2014-05-06	AI39919	ND
2014-05-06	AI39918	ND
2015-05-04	AI76127	ND
2015-05-04	AI76126	ND
2015-05-04	AI76129	ND
2015-05-04	AI76130	ND
2015-05-04	AI76131	ND
2016-04-27	AJ11015	ND
2016-04-27	AJ11014	ND
2016-04-27	AJ11013	ND
2016-04-27	AJ11012	ND
2016-04-27	AJ11011	ND
2017-04-27	AJ54210	ND
2017-04-27	AJ54213	ND
2017-04-27	AJ54211	ND
2017-04-27	AJ54205	ND
2017-04-27	AJ54204	ND
2017-04-27	AJ54203	ND
2017-04-27	AJ54200	ND
2018-05-08	AJ89102	ND
2018-05-08	AJ89096	ND
2018-05-09	AJ89241	ND
2018-05-09	AJ89239	ND
2018-05-09	AJ89240	ND
2018-05-09	AJ89242	ND
2018-05-09	AJ89243	ND
2019-04-01	AK14302	ND
2019-04-01	AK14301	ND
2019-04-01	AK14300	ND
2019-04-01	AK14299	ND
2019-04-01	AK14298	ND
2019-04-01	AK14297	ND
2019-04-02	AK14403	ND