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EWG's Tap Water Database — 2021 UPDATE

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Nitrate

Fairfield Sapphire

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.

MORE ABOUT THIS CONTAMINANT

 

66

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND110ND
2015ND110ND
2016ND110ND
2017ND110ND
2018ND110ND
2019ND110ND

ppm = parts per million

State and national drinking water standards and health guidelines

EWG Health Guideline 0.14 ppm

The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.

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
2014-10-157172-101514-006NND
2014-10-157172-101514-007NND
2014-10-157172-101514-008NND
2014-10-157172-101514-009NND
2014-10-157172-101514-010NND
2014-10-157172-101514-012NND
2014-10-157172-101514-001NND
2014-10-157172-101514-002NND
2014-10-157172-101514-003NND
2014-10-157172-101514-004NND
2014-10-157172-101514-005NND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2015-10-27ND
2016-10-267172-102616-006NND
2016-10-267172-102616-012NND
2016-10-267172-102616-010NND
2016-10-267172-102616-009NND
2016-10-267172-102616-008NND
2016-10-267172-102616-007NND
2016-10-267172-102616-005NND
2016-10-267172-102616-004NND
2016-10-267172-102616-003NND
2016-10-267172-102616-002NND
2016-10-267172-102616-001NND
2017-10-187172-101817-001NND
2017-10-187172-101817-012NND
2017-10-187172-101817-010NND
2017-10-187172-101817-009NND
2017-10-187172-101817-008NND
2017-10-187172-101817-007NND
2017-10-187172-101817-005NND
2017-10-187172-101817-004NND
2017-10-187172-101817-003NND
2017-10-187172-101817-002NND
2017-10-187172-101817-006NND
2018-10-097172-100918-012NND
2018-10-097172-100918-010NND
2018-10-097172-100918-009NND
2018-10-097172-100918-008NND
2018-10-097172-100918-007NND
2018-10-097172-100918-006NND
2018-10-097172-100918-005NND
2018-10-097172-100918-004NND
2018-10-097172-100918-003NND
2018-10-097172-100918-002NND
2018-10-097172-100918-001NND
2019-10-077172-100719-012NND
2019-10-077172-100719-010NND
2019-10-077172-100719-009NND
2019-10-077172-100719-008NND
2019-10-077172-100719-007NND
2019-10-077172-100719-006NND
2019-10-077172-100719-005NND
2019-10-077172-100719-004NND
2019-10-077172-100719-003NND
2019-10-077172-100719-002NND
2019-10-077172-100719-001NND