Know Your Environment. Protect Your Health.

Nitrate

Bainbridge Island City Of

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.

 

55

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND110ND
2019ND110ND
2020N/A00N/A
2021ND110ND
2022ND110ND
2023ND110ND

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
2018-05-29ND
2018-05-29ND
2018-05-29ND
2018-05-30ND
2018-05-30ND
2018-05-30ND
2018-07-02ND
2018-07-02ND
2018-07-02ND
2018-07-02ND
2018-07-02ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-19ND
2019-09-23ND
2021-09-234183101ND
2021-09-234183100ND
2021-09-234183100ND
2021-09-234183102ND
2021-09-234183102ND
2021-09-234183102ND
2021-09-294183089ND
2021-09-294183089ND
2021-09-294183089ND
2021-09-294183089ND
2021-09-294183090ND
2022-10-124371595ND
2022-10-124371597ND
2022-10-124371598ND
2022-10-124371598ND
2022-10-124371127ND
2022-10-124371127ND
2022-10-124371127ND
2022-10-124371127ND
2022-10-124371126ND
2022-10-124371126ND
2022-10-124371126ND
2023-06-274485126ND
2023-06-274485129ND
2023-06-274485123ND
2023-06-274485126ND
2023-06-274485126ND
2023-06-274485113ND
2023-06-274485116ND
2023-06-274485116ND
2023-06-274485123ND
2023-06-274485123ND
2023-06-274485123ND