Know Your Environment. Protect Your Health.

Nitrate

Cross Roads Special Utility District

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.

 

15

Samples

0

Samples exceeding legal limit (MCL)

12

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.393 ppm220.261 ppm - 0.524 ppm
20190.350 ppm220.239 ppm - 0.461 ppm
20200.415 ppm110.415 ppm
20210.229 ppm440.0423 ppm - 0.432 ppm
20220.269 ppm330.0213 ppm - 0.519 ppm
20230.244 ppm330.0344 ppm - 0.489 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
2018-06-11Q18230670030.524 ppm
2018-06-11Q18230670100.261 ppm
2019-10-29Q19746040070.461 ppm
2019-10-31Q19746600010.239 ppm
2020-12-17Q20500790130.415 ppm
2021-03-02Q21053080050.0423 ppm
2021-11-30Q21330080150.222 ppm
2021-11-30Q21330080180.432 ppm
2021-11-30Q21331070010.220 ppm
2022-03-22Q22091570040.519 ppm
2022-03-22Q22091570050.266 ppm
2022-03-22Q22091570060.0213 ppm
2023-02-27Q23078120010.489 ppm
2023-07-20Q23287420040.0344 ppm
2023-10-16Q23438860090.209 ppm