Know Your Environment. Protect Your Health.

Nitrate and nitrite

Cooper County Consolidated Public Water Supply 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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0160 ppm110.0160 ppm
2019ND10ND
20200.01000 ppm110.01000 ppm
20210.0110 ppm21ND - 0.0220 ppm
2022ND10ND
20230.00500 ppm21ND - 0.01000 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
2018-03-02AD145270.0160 ppm
2019-02-13AD39702ND
2020-02-1220015230.01000 ppm
2021-02-112100761ND
2021-04-2221104950.0220 ppm
2022-02-142202055ND
2023-02-092300676ND
2023-10-2523160820.01000 ppm