Know Your Environment. Protect Your Health.

Nitrate

Sl County Service Area No. 3 - Snowbird

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

7

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0769 ppm32ND - 0.120 ppm
20190.0983 ppm32ND - 0.156 ppm
20200.111 ppm32ND - 0.171 ppm
20210.104 ppm32ND - 0.165 ppm
20220.0500 ppm41ND - 0.200 ppm
20230.128 ppm330.110 ppm - 0.141 ppm

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.14 ppm

The EWG 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

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 Result
2018-09-120.111 ppm
2018-09-120.120 ppm
2018-09-13ND
2019-08-21ND
2019-09-180.156 ppm
2019-09-180.139 ppm
2020-09-15ND
2020-09-150.164 ppm
2020-09-150.171 ppm
2021-09-210.165 ppm
2021-09-210.148 ppm
2021-09-21ND
2022-09-200.200 ppm
2022-09-20ND
2022-09-20ND
2022-11-11ND
2023-10-170.110 ppm
2023-10-170.133 ppm
2023-10-170.141 ppm