Nitrite

City of West Point

Nitrite, closely related to the fertilizer chemical nitrate, comes from urban runoff and from fertilizer applied to agricultural lands to pollute drinking water. Nitrite is significantly more toxic than nitrate. Excessive nitrite in water can cause oxygen deprivation in infants and increase the risk of cancer.

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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
2013	N/A	0	N/A
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

EPA Maximum Contaminant
Level (MCL) 1 ppm

The legal limit for nitrite, established in 1991, was based on the rate of conversion of ingested nitrate into nitrite in adults. This limit may not fully protect against the risk of cancer due to nitrite exposure.

ppm = parts per million

All test results

Date	Lab ID	Result
2014-01-29	140130-030NI	ND
2014-01-29	140130-029NI	ND
2014-01-29	140130-020NI	ND
2014-01-29	140130-019NI	ND
2014-01-29	140130-014NI	ND
2015-01-28	150129-097NI	ND
2015-01-28	150129-050NI	ND
2015-01-28	150129-049NI	ND
2015-01-28	150129-048NI	ND
2015-01-28	150129-047NI	ND
2016-03-21	160322-030NI	ND
2016-03-21	160322-070NI	ND
2016-03-21	160322-061NI	ND
2016-03-21	160322-060NI	ND
2016-03-21	160322-040NI	ND
2017-01-23	170124-036NI	ND
2017-01-23	170124-032NI	ND
2017-01-23	170124-031NI	ND
2017-01-23	170124-029NI	ND
2017-10-30	171031-015NI	ND
2018-01-29	180130-070NI	ND
2018-01-29	180130-045NI	ND
2018-01-29	180130-044NI	ND
2018-01-29	180130-039NI	ND
2018-01-29	180130-020NI	ND
2019-02-05	190206-031NI	ND
2019-02-05	190206-040NI	ND
2019-02-05	190206-034NI	ND
2019-02-05	190206-033NI	ND
2019-02-05	190206-032NI	ND