Know Your Environment. Protect Your Health.

Nitrate

Sand Flat 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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0196 ppm330.0172 ppm - 0.0213 ppm
20190.0202 ppm330.0140 ppm - 0.0326 ppm
20200.00937 ppm32ND - 0.0147 ppm
20210.00717 ppm32ND - 0.0112 ppm
20220.0204 ppm330.0137 ppm - 0.0263 ppm
20230.00853 ppm32ND - 0.0133 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
2018-03-05Q18088900030.0172 ppm
2018-03-05Q18088900110.0202 ppm
2018-03-05Q18088900010.0213 ppm
2019-08-22Q19586810100.0140 ppm
2019-08-22Q19586810120.0326 ppm
2019-08-22Q19586810130.0141 ppm
2020-06-11Q20235830110.0134 ppm
2020-06-11Q2023583012ND
2020-10-08Q20396110060.0147 ppm
2021-08-05Q2120790003ND
2021-08-05Q21207900050.0112 ppm
2021-08-05Q21207900040.0103 ppm
2022-05-19Q22148180110.0211 ppm
2022-05-19Q22148180120.0263 ppm
2022-05-19Q22148180130.0137 ppm
2023-06-01Q23205450130.0133 ppm
2023-06-01Q2320545014ND
2023-06-01Q23205450240.0123 ppm