Know Your Environment. Protect Your Health.

Nitrate

St. Nersess Armenian Seminary

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND40ND
2021ND30ND
2022ND40ND
20230.0419 ppm53ND - 0.0709 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

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
2018-12-061.803210-NITND
2019-12-051.903374-NITND
2020-03-17AW05461-NITND
2020-07-15AW13403-NITND
2020-07-15AW13401-NITND
2020-11-044201846175-NITND
2021-03-02AX04088-NITND
2021-07-21AX14494-NITND
2021-11-101.103379-NITND
2022-01-10AY00554-NITND
2022-09-20AY16884-NITND
2022-09-20AY16882-NITND
2022-11-021.223059-NITND
2023-01-23AZ01383-NITND
2023-09-14AZ16996-NIT0.0701 ppm
2023-09-14AZ16994-NIT0.0709 ppm
2023-09-28AZ17943-NIT0.0686 ppm
2023-10-041.232481-NITND