Know Your Environment. Protect Your Health.

Nitrate

Mystic Harbour

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

 

48

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND80ND
2020ND80ND
2021ND80ND
2022ND80ND
2023ND80ND

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

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date Lab ID Result
2018-12-06APN2ND
2018-12-06LN1ND
2018-12-06LN2ND
2018-12-06MHN1ND
2018-12-06MHN2ND
2018-12-06MHN3ND
2018-12-06SVNND
2018-12-06APN1ND
2019-12-11MHN3ND
2019-12-11SVNND
2019-12-11MHN2ND
2019-12-11MHN1ND
2019-12-11LN2ND
2019-12-11LN1ND
2019-12-11APN2ND
2019-12-11APN1ND
2020-11-160230011_111620_LN1ND
2020-11-160230011_111620_LN2ND
2020-11-160230011_111620_MHN1ND
2020-11-160230011_111620_MHN2ND
2020-11-160230011_111620_MHN3ND
2020-11-170230011_111720_APN1ND
2020-11-170230011_111720_APN2ND
2020-11-170230011_111720_SVNND
2021-11-160230011_111621_TP01ND
2021-11-160230011_222621TP01ABND
2021-11-160230011_111621_TP06AND
2021-11-160230011_111621_TP06ND
2021-11-160230011_111621_TP05ND
2021-11-160230011_111621_TP04ND
2021-11-160230011_111621_TP01AND
2021-11-160230011_111621_TP05AND
2022-11-30MHN3ND
2022-11-30SVN_0230011ND
2022-11-30MHN2ND
2022-11-30MHN1ND
2022-11-30LN2_0230011ND
2022-11-30LN1_0230011ND
2022-11-30APN2_0230011ND
2022-11-30APN1_0230011ND
2023-12-040230011-120423-TP01ND
2023-12-040230011-120423-TP01AND
2023-12-040230011-120423-TP01BND
2023-12-040230011-120423-TP04ND
2023-12-040230011-120423-TP06ND
2023-12-040230011-120423-TP06AND
2023-12-050230011-120523-TP05ND
2023-12-050230011-120523-TP05AND