Nitrate and nitrite

Hamilton Township MUA

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	Detections	Range of results
2014	0.205 ppm	5	2	ND - 0.721 ppm
2015	0.212 ppm	5	2	ND - 0.735 ppm
2016	0.228 ppm	5	2	ND - 0.772 ppm
2017	0.220 ppm	5	2	ND - 0.725 ppm
2018	0.224 ppm	5	2	ND - 0.714 ppm
2019	0.227 ppm	5	2	ND - 0.715 ppm

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
2014-07-07	3277	ND
2014-07-07	3278	ND
2014-07-07	3280	ND
2014-07-07	3281	0.306 ppm
2014-07-07	3279	0.721 ppm
2015-07-20	7738	ND
2015-07-20	7739	ND
2015-07-20	7742	ND
2015-07-20	7740	0.735 ppm
2015-07-20	7741	0.326 ppm
2016-07-26	12040	0.367 ppm
2016-07-26	12036	ND
2016-07-26	12039	ND
2016-07-26	12037	ND
2016-07-26	12038	0.772 ppm
2017-07-24	18479	0.376 ppm
2017-07-24	18475	ND
2017-07-24	18476	ND
2017-07-24	18477	0.725 ppm
2017-07-24	18478	ND
2018-09-24	26304	ND
2018-09-24	26302	0.714 ppm
2018-09-24	26305	ND
2018-09-24	26303	0.404 ppm
2018-09-24	26301	ND
2019-07-22	31378	ND
2019-07-22	31376	0.715 ppm
2019-07-22	31379	ND
2019-07-22	31377	0.421 ppm
2019-07-22	31375	ND