Know Your Environment. Protect Your Health.

Nitrate and nitrite

Waterford WPCA

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.

 

0

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0765 ppm220.0650 ppm - 0.0880 ppm
20190.0235 ppm220.0230 ppm - 0.0240 ppm
20200.0285 ppm220.0230 ppm - 0.0340 ppm
20210.0265 ppm220.0220 ppm - 0.0310 ppm
20220.0300 ppm21ND - 0.0600 ppm
20230.0240 ppm21ND - 0.0480 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