Know Your Environment. Protect Your Health.

Nitrate and nitrite

Wallace, Town of

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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND70ND
2020ND60ND
2021ND60ND
2022ND60ND
2023ND50ND

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
2019-08-1437729_19-34795ND
2019-08-1437729_19-34804ND
2019-08-1437729_19-34816ND
2019-08-1437729_19-34826ND
2019-08-1437729_19-34838ND
2019-08-1437729_19-34852ND
2019-08-1937729_19-35356ND
2020-09-3037729_20-42723ND
2020-09-3037729_20-42724ND
2020-09-3037729_20-42725ND
2020-09-3037729_20-42726ND
2020-09-3037729_20-42728ND
2020-09-3037729_20-42729ND
2021-09-2337729_21-42056ND
2021-09-2337729_21-42059ND
2021-09-2337729_21-42058ND
2021-09-2337729_21-42057ND
2021-09-2337729_21-42055ND
2021-09-2337729_21-42052ND
2022-10-0337729_22-47902ND
2022-10-0337729_22-47909ND
2022-10-0337729_22-47937ND
2022-10-0337729_22-47938ND
2022-10-0337729_22-47939ND
2022-10-0337729_22-47940ND
2023-09-2937729_23-55323ND
2023-09-2937729_23-55324ND
2023-09-2937729_23-55325ND
2023-09-2937729_23-55326ND
2023-09-2937729_23-55327ND