Know Your Environment. Protect Your Health.

Nitrate and nitrite

Satsuma Water Works

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.130 ppm21ND - 0.260 ppm
20190.135 ppm21ND - 0.270 ppm
20200.131 ppm220.0610 ppm - 0.200 ppm
20210.220 ppm220.220 ppm
20220.0950 ppm21ND - 0.190 ppm
2023ND10ND

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
2018-07-172080447001_IIOCND
2018-07-172080447002_IIOC0.260 ppm
2019-12-1620134750001_IIOC0.270 ppm
2019-12-1620134762001_IIOCND
2020-11-0420178327001_IIOC0.0610 ppm
2020-11-0420178327002_IIOC0.200 ppm
2021-11-0320224729001_IIOC0.220 ppm
2021-11-0320224729002_IIOC0.220 ppm
2022-10-1820258913001_IIOCND
2022-10-1820258913002_IIOC0.190 ppm
2023-12-0620299416001_IIOCND