Know Your Environment. Protect Your Health.

Nitrate and nitrite

Pilot Mountain, Town of

NOTE: Pilot Mountain, Town of purchases water from City of Mount Airy which is required to test for nitrate and nitrite. Sample information shown below was taken by City of Mount Airy.

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.

 

6

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
2020ND10ND
2021ND20ND
2022ND10ND
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

NOTE: Pilot Mountain, Town of purchases water from City of Mount Airy which is required to test for nitrate and nitrite. Sample information shown below was taken by City of Mount Airy.

Date Lab ID Result
2021-01-26188-21ND
2021-01-26191-21ND
2022-01-25254-22ND
2022-01-25257-22ND
2023-02-0737729_23-06133ND
2023-02-0737729_23-06134ND