Nitrate and nitrite

Oswego

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
2013	N/A	0	0	N/A
2014	0.0182 ppm	8	2	ND - 0.0737 ppm
2015	0.00688 ppm	8	1	ND - 0.0550 ppm
2016	0.0153 ppm	7	1	ND - 0.107 ppm
2017	N/A	0	0	N/A
2018	N/A	0	0	N/A
2019	N/A	0	0	N/A

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
2014-07-10	1407683-002B	0.0719 ppm
2014-07-10	1407683-003B	ND
2014-07-10	1407683-004B	ND
2014-07-10	1407683-005B	ND
2014-07-10	1407683-006B	ND
2014-07-10	1407683-007B	ND
2014-07-10	1407683-001B	0.0737 ppm
2014-11-04	1411159-001B	ND
2015-08-05	1508371-006B	ND
2015-08-05	1508371-002B	ND
2015-08-05	1508371-001B	ND
2015-08-05	1508371-007B	ND
2015-08-05	1508371-005B	ND
2015-08-05	1508371-004B	ND
2015-08-05	1508371-003B	0.0550 ppm
2015-10-07	1510507-001B	ND
2016-07-12	1607838-001B	ND
2016-07-12	1607838-002B	0.107 ppm
2016-07-12	1607838-003B	ND
2016-07-12	1607838-004B	ND
2016-07-12	1607838-005B	ND
2016-07-12	1607834-001B	ND
2016-07-12	1607834-002B	ND