Know Your Environment. Protect Your Health.

Nitrate

Osseo Waterworks

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.886 ppm220.0120 ppm - 1.76 ppm
20190.672 ppm220.0140 ppm - 1.33 ppm
2020N/A00N/A
2021ND40ND
20220.804 ppm220.0170 ppm - 1.59 ppm
20230.611 ppm220.0210 ppm - 1.20 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 Lab ID Result
2018-08-0818H0345-040.0120 ppm
2018-08-0818H0345-031.76 ppm
2019-06-1019F0299-020.0140 ppm
2019-06-1019F0299-011.33 ppm
2021-03-03549919001ND
2021-03-03549920001ND
2021-03-03549919001ND
2021-03-03549920001ND
2022-07-0522G0122-020.0170 ppm
2022-07-0522G0122-011.59 ppm
2023-03-2223C0748-020.0210 ppm
2023-03-2223C0748-011.20 ppm