Nitrate and nitrite

Taylorsville-Bennion Improvement District

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	0.800 ppm	8	6	ND - 2.10 ppm
2015	0.756 ppm	9	8	ND - 2.30 ppm
2016	0.944 ppm	9	8	ND - 2.60 ppm
2017	0.919 ppm	9	9	0.150 ppm - 2.40 ppm
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	Result
2014-07-28	1.60 ppm
2014-07-28	2.10 ppm
2014-07-28	0.700 ppm
2014-07-28	ND
2014-07-28	0.200 ppm
2014-07-28	1.60 ppm
2014-07-28	0.200 ppm
2014-07-28	ND
2015-07-09	0.200 ppm
2015-07-09	1.70 ppm
2015-07-09	0.700 ppm
2015-07-09	0.200 ppm
2015-07-09	0.300 ppm
2015-07-09	2.30 ppm
2015-07-09	1.20 ppm
2015-07-09	ND
2015-07-09	0.200 ppm
2016-06-22	1.60 ppm
2016-06-22	0.900 ppm
2016-06-22	2.60 ppm
2016-06-22	0.400 ppm
2016-06-22	0.400 ppm
2016-06-22	2.20 ppm
2016-06-22	0.200 ppm
2016-06-22	0.200 ppm
2016-06-22	ND
2017-06-21	0.150 ppm
2017-06-21	0.359 ppm
2017-06-21	0.782 ppm
2017-06-21	2.29 ppm
2017-06-21	0.510 ppm
2017-06-21	0.248 ppm
2017-07-11	1.35 ppm
2017-07-11	0.183 ppm
2017-07-11	2.40 ppm