Know Your Environment. Protect Your Health.

Nitrate

City of Aubrey

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0487 ppm440.0402 ppm - 0.0633 ppm
20190.0633 ppm440.0396 ppm - 0.127 ppm
20200.0441 ppm440.0359 ppm - 0.0546 ppm
20210.0427 ppm440.0371 ppm - 0.0468 ppm
20220.0436 ppm440.0371 ppm - 0.0505 ppm
20230.0421 ppm550.0323 ppm - 0.0515 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
2018-03-15Q18108370170.0427 ppm
2018-03-15Q18108370180.0402 ppm
2018-03-15Q18108370190.0484 ppm
2018-03-15Q18108370160.0633 ppm
2019-05-15Q19262330100.127 ppm
2019-05-15Q19262330110.0447 ppm
2019-05-15Q19262330120.0420 ppm
2019-05-15Q19262330130.0396 ppm
2020-03-26Q20128500050.0359 ppm
2020-10-05Q20388280140.0491 ppm
2020-10-05Q20388280150.0366 ppm
2020-10-05Q20388280260.0546 ppm
2021-07-01Q21173700070.0459 ppm
2021-07-01Q21173700100.0468 ppm
2021-07-01Q21173700090.0409 ppm
2021-07-01Q21173700080.0371 ppm
2022-10-13Q22310650010.0482 ppm
2022-10-13Q22310650110.0505 ppm
2022-10-13Q22310650120.0385 ppm
2022-10-13Q22310650130.0371 ppm
2023-04-11Q23133000040.0373 ppm
2023-09-26Q23412710140.0507 ppm
2023-09-26Q23412710150.0385 ppm
2023-09-26Q23412710160.0323 ppm
2023-09-26Q23412710330.0515 ppm