Know Your Environment. Protect Your Health.

Nitrate and nitrite

Town of Indian Head

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.

 

14

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
2019N/A00N/A
2020ND20ND
2021ND30ND
2022ND60ND
2023ND30ND

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
2020-02-27E20002933002ND
2020-02-27E20002933003ND
2021-05-170080020_051721_TP02ND
2021-05-170080020_051721_TP03ND
2021-05-170080020_051721_TP07ND
2022-03-07DW-0681ND
2022-03-07DW-0682ND
2022-03-07DW-0683ND
2022-05-24000001ND
2022-05-24000001_AND
2022-05-24000001_BND
2023-04-13000001-AND
2023-04-13000001-BND
2023-04-14000001ND