Nitrate

Harrison, City of

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.

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	0.0400 ppm	3	2	ND - 0.0600 ppm
2015	0.0400 ppm	3	1	ND - 0.120 ppm
2016	0.0267 ppm	3	1	ND - 0.0800 ppm
2017	0.0300 ppm	3	1	ND - 0.0900 ppm
2018	0.0600 ppm	3	1	ND - 0.180 ppm
2019	0.0447 ppm	3	1	ND - 0.134 ppm

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
2014-10-15	NW4J034304	ND
2014-10-15	NW4J034303	0.0600 ppm
2014-10-15	NW4J034302	0.0600 ppm
2015-11-19	NW5K032703	ND
2015-11-19	NW5K032702	0.120 ppm
2015-11-19	NW5K032701	ND
2016-06-08	IW6F022601	ND
2016-06-08	IW6F022603	ND
2016-06-08	IW6F022602	0.0800 ppm
2017-10-16	X7J031903	ND
2017-10-16	NX7J031902	0.0900 ppm
2017-10-16	NX7J031901	ND
2018-12-13	NX8L029003	ND
2018-12-13	NX8L029002	0.180 ppm
2018-12-13	NX8L029001	ND
2019-06-10	IX9F020201	ND
2019-11-19	IX9K035902	0.134 ppm
2019-11-19	IX9K035903	ND