Know Your Environment. Protect Your Health.

Nitrate and nitrite

Quinebaug Mobile Home Park

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.

 

9

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.273 ppm32ND - 0.510 ppm
20190.0200 ppm110.0200 ppm
2020ND10ND
20210.720 ppm110.720 ppm
20220.750 ppm220.630 ppm - 0.870 ppm
20230.740 ppm110.740 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
2018-03-19CA05413NOX0.510 ppm
2018-06-05CA64325NOX0.310 ppm
2018-09-19CB35334ND
2019-02-26CC585500.0200 ppm
2020-03-13CF50551ND
2021-03-11CH776310.720 ppm
2022-09-21CM383140.630 ppm
2022-11-10CM827850.870 ppm
2023-06-07CO227130.740 ppm