Know Your Environment. Protect Your Health.

Nitrate

JBLM Lewis

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.

 

50

Samples

0

Samples exceeding legal limit (MCL)

31

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.446 ppm1211ND - 1.81 ppm
20190.569 ppm97ND - 2.31 ppm
2020N/A00N/A
20210.274 ppm147ND - 0.970 ppm
20220.208 ppm63ND - 0.690 ppm
20230.333 ppm94ND - 1.06 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
2018-05-290.800 ppm
2018-08-080.366 ppm
2018-08-080.366 ppm
2018-08-080.366 ppm
2018-08-080.272 ppm
2018-08-080.234 ppm
2018-08-080.234 ppm
2018-08-080.173 ppm
2018-08-210.529 ppm
2018-08-211.81 ppm
2018-08-21ND
2018-08-210.200 ppm
2019-07-31ND
2019-07-310.490 ppm
2019-07-310.195 ppm
2019-07-310.667 ppm
2019-07-312.31 ppm
2019-07-310.364 ppm
2019-07-310.661 ppm
2019-07-310.434 ppm
2019-12-16ND
2021-06-164213499ND
2021-06-1642135000.821 ppm
2021-06-164213498ND
2021-06-1642134970.136 ppm
2021-06-284145042ND
2021-07-224213506ND
2021-07-2242135050.202 ppm
2021-07-2242135070.431 ppm
2021-07-224213508ND
2021-11-1942072480.300 ppm
2021-11-1942072470.970 ppm
2021-11-1942072470.970 ppm
2021-11-194207254ND
2021-11-194207249ND
2022-05-0442869200.690 ppm
2022-07-124336645ND
2022-07-274332294ND
2022-09-074336806ND
2022-09-0843368080.280 ppm
2022-09-0843368080.280 ppm
2023-04-0544400701.000 ppm
2023-04-0544400801.06 ppm
2023-04-124443047ND
2023-04-124443047ND
2023-04-1344430440.470 ppm
2023-04-1344430440.470 ppm
2023-06-154470069ND
2023-09-064521509ND
2023-10-034538158ND