Nitrite

Cottonwood Creek Mobile Home Park

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.

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	0.195 ppm	4	2	ND - 0.674 ppm
2015	0.266 ppm	4	3	ND - 0.516 ppm
2016	0.634 ppm	5	5	0.320 ppm - 1.05 ppm
2017	0.190 ppm	4	3	ND - 0.543 ppm
2018	0.636 ppm	4	3	ND - 0.925 ppm
2019	0.598 ppm	4	4	0.335 ppm - 0.896 ppm

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
2014-03-17	Q1408471001	ND
2014-06-03	Q1418845003	0.105 ppm
2014-09-02	Q1440534001	0.674 ppm
2014-12-04	Q1458656001	ND
2015-03-10	Q1508658005	ND
2015-05-26	Q1519038001	0.516 ppm
2015-08-12	Q1531733001	0.275 ppm
2015-10-21	Q1541367001	0.271 ppm
2016-01-20	Q1602339002	0.667 ppm
2016-01-20	Q1602339001	0.644 ppm
2016-04-12	Q1614275001	1.05 ppm
2016-07-05	Q1626766001	0.320 ppm
2016-10-10	Q1642690001	0.488 ppm
2017-01-11	Q1701424003	0.0196 ppm
2017-04-10	Q1714474001	0.196 ppm
2017-07-06	Q1727617001	ND
2017-10-12	Q1752293001	0.543 ppm
2018-01-31	Q1803685005	0.925 ppm
2018-04-25	Q1816866001	0.714 ppm
2018-07-18	Q1828462001	ND
2018-10-11	Q1840584001	0.906 ppm
2019-01-09	Q1901144003	0.618 ppm
2019-04-15	Q1915021001	0.335 ppm
2019-08-20	Q1956753001	0.543 ppm
2019-10-31	Q1974651001	0.896 ppm