Know Your Environment. Protect Your Health.

Nitrate and nitrite

Somers Consolidated Water District #1

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)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021ND10ND
20220.114 ppm21ND - 0.228 ppm
20230.284 ppm43ND - 0.450 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

ppm = parts per million

All test results

Date Lab ID Result
2022-02-021.220273NITND
2022-03-08AY04091-NIT0.228 ppm
2023-02-22AZ03325-NIT0.339 ppm
2023-02-22AZ03327-NIT0.347 ppm
2023-09-06AZ16471-NIT0.450 ppm
2023-09-071.232201-NITND