Know Your Environment. Protect Your Health.

Nitrate

Mccoy Water Supply Corporation

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.

 

19

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0167 ppm32ND - 0.0300 ppm
2019ND30ND
20200.0167 ppm31ND - 0.0500 ppm
2021ND30ND
20220.0167 ppm31ND - 0.0500 ppm
2023ND40ND

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
2018-02-05AE120590.0200 ppm
2018-02-05AE120600.0300 ppm
2018-02-05AE12057ND
2019-06-05AE69152ND
2019-06-05AE69153ND
2019-11-18AE89367ND
2020-03-26AF046620.0500 ppm
2020-03-26AF04663ND
2020-03-26AF04664ND
2021-06-28AF59559ND
2021-09-20AF70282ND
2021-09-20AF70283ND
2022-07-05AG03193ND
2022-07-05AG031940.0500 ppm
2022-07-05AG03197ND
2023-05-03AG39053ND
2023-05-03AG39054ND
2023-05-03AG39055ND
2023-05-03AG39056ND