Know Your Environment. Protect Your Health.

Nitrate

Saint Francis Village

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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0572 ppm440.0295 ppm - 0.0963 ppm
20190.0499 ppm440.0250 ppm - 0.0654 ppm
20200.0288 ppm440.0111 ppm - 0.0420 ppm
20210.0342 ppm440.0272 ppm - 0.0536 ppm
20220.0512 ppm440.0385 ppm - 0.0695 ppm
20230.0431 ppm43ND - 0.0911 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
2018-07-19Q18287730100.0568 ppm
2018-07-19Q18287730110.0963 ppm
2018-07-19Q18287730120.0295 ppm
2018-07-19Q18287730090.0460 ppm
2019-03-20Q19116270010.0521 ppm
2019-03-20Q19116270020.0569 ppm
2019-03-20Q19116270030.0654 ppm
2019-03-20Q19116270040.0250 ppm
2020-07-20Q20281810100.0404 ppm
2020-07-20Q20281810110.0111 ppm
2020-07-20Q20281810120.0420 ppm
2020-07-20Q20281810130.0215 ppm
2021-03-23Q21074150100.0272 ppm
2021-03-23Q21074150130.0536 ppm
2021-03-23Q21074150120.0277 ppm
2021-03-23Q21074150110.0283 ppm
2022-05-26Q22152640020.0462 ppm
2022-05-26Q22152640190.0695 ppm
2022-05-26Q22152640200.0385 ppm
2022-05-26Q22152640220.0504 ppm
2023-03-20Q23104380100.0911 ppm
2023-03-20Q2310438011ND
2023-03-20Q23104380120.0681 ppm
2023-03-20Q23104380130.0131 ppm