Know Your Environment. Protect Your Health.

Nitrate

West Gregg 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.

 

24

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0373 ppm440.0305 ppm - 0.0469 ppm
20190.0403 ppm440.0352 ppm - 0.0501 ppm
20200.0380 ppm440.0335 ppm - 0.0448 ppm
20210.0395 ppm440.0336 ppm - 0.0474 ppm
20220.0407 ppm440.0331 ppm - 0.0525 ppm
20230.0370 ppm440.0283 ppm - 0.0494 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
2018-09-13Q18364860080.0343 ppm
2018-09-13Q18364860090.0373 ppm
2018-09-13Q18364860070.0305 ppm
2018-12-05Q18497340050.0469 ppm
2019-02-14Q19069420040.0501 ppm
2019-02-14Q19069420140.0387 ppm
2019-03-28Q19126500090.0352 ppm
2019-03-28Q19126500100.0373 ppm
2020-01-09Q20009560110.0448 ppm
2020-01-09Q20009560120.0335 ppm
2020-01-09Q20009560130.0373 ppm
2020-01-09Q20009560230.0363 ppm
2021-06-15Q21155660100.0474 ppm
2021-06-15Q21155660130.0401 ppm
2021-06-15Q21155660120.0368 ppm
2021-06-15Q21155660110.0336 ppm
2022-03-14Q22085160070.0331 ppm
2022-08-17Q22243320010.0402 ppm
2022-08-17Q22243320190.0368 ppm
2022-08-17Q22243320200.0525 ppm
2023-03-07Q23089190020.0494 ppm
2023-03-07Q23089190030.0312 ppm
2023-03-07Q23089190220.0392 ppm
2023-07-19Q23284530090.0283 ppm