Know Your Environment. Protect Your Health.

Nitrate and nitrite

Union Springs Water System

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)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0300 ppm220.0300 ppm
2019ND40ND
20200.0667 ppm31ND - 0.200 ppm
20210.1000 ppm21ND - 0.200 ppm
20220.1000 ppm110.1000 ppm
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

Date Lab ID Result
2018-11-29354346520010.0300 ppm
2018-11-29354346520010.0300 ppm
2019-03-2635458211001ND
2019-03-2635458211001ND
2019-12-0335519355001ND
2019-12-0335519355001ND
2020-01-21B2000258-001ND
2020-03-31B2001635-004ND
2020-03-31B2001635-0050.200 ppm
2021-04-29B2102094-001ND
2021-09-14B2104553-0020.200 ppm
2022-06-01B2202657-0020.1000 ppm
2023-05-02B2301876-004ND
2023-05-02B2301876-005ND