Know Your Environment. Protect Your Health.

Nitrate

Big Eddy

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0437 ppm220.0338 ppm - 0.0536 ppm
20190.0503 ppm220.0398 ppm - 0.0608 ppm
20200.0408 ppm220.0337 ppm - 0.0479 ppm
20210.0380 ppm220.0327 ppm - 0.0432 ppm
20220.0396 ppm220.0329 ppm - 0.0462 ppm
20230.0305 ppm220.0303 ppm - 0.0307 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
2018-08-01Q18304970070.0536 ppm
2018-08-01Q18304970080.0338 ppm
2019-07-16Q19453590010.0608 ppm
2019-11-06Q19756700040.0398 ppm
2020-03-18Q20120140150.0479 ppm
2020-03-18Q20120140160.0337 ppm
2021-08-16Q21218190020.0432 ppm
2021-08-16Q21218190080.0327 ppm
2022-07-26Q22211580040.0329 ppm
2022-10-21Q22320150040.0462 ppm
2023-05-11Q23180270150.0307 ppm
2023-05-11Q23180270160.0303 ppm