Know Your Environment. Protect Your Health.

Nitrate and nitrite

Prairie Ronde Water System Inc.

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0143 ppm142ND - 0.1000 ppm
2019ND40ND
20200.0500 ppm21ND - 0.1000 ppm
20210.1000 ppm21ND - 0.200 ppm
2022ND20ND
2023ND20ND

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

ppm = parts per million

All test results

Date Lab ID Result
2018-05-07B1801854-002ND
2018-05-07AE21650ND
2018-05-07B1801854-001ND
2018-05-07B1801854-002ND
2018-05-07B1801854-001ND
2018-05-07AE21650ND
2018-09-24B1804539-001ND
2018-09-24B1804539-0020.1000 ppm
2018-09-24B1804539-003ND
2018-09-24B1804539-004ND
2018-09-24B1804539-001ND
2018-09-24B1804539-0020.1000 ppm
2018-09-24B1804539-003ND
2018-09-24B1804539-004ND
2019-06-1835476268002ND
2019-06-1835476268002ND
2019-06-1835476268001ND
2019-06-1835476268001ND
2020-12-18B2006756-0010.1000 ppm
2020-12-18B2006756-002ND
2021-05-17B2102271-0060.200 ppm
2021-05-17B2102271-007ND
2022-11-30B2205706-001ND
2022-11-30B2205706-002ND
2023-05-25B2302249-001ND
2023-05-25B2302249-002ND