Know Your Environment. Protect Your Health.

Nitrate and nitrite

Rockwood People's Utilities Department

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.

 

3

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.238 ppm220.0260 ppm - 0.450 ppm
20190.0250 ppm220.0200 ppm - 0.0300 ppm
20200.0435 ppm21ND - 0.0870 ppm
20210.157 ppm220.0140 ppm - 0.300 ppm
20220.01000 ppm110.01000 ppm
20230.0490 ppm220.0210 ppm - 0.0770 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
2019-06-251945485-I0.0300 ppm
2019-06-2519454930.0200 ppm
2022-02-0922093090.01000 ppm