Know Your Environment. Protect Your Health.

Nitrate

City Of Glen Rose

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0290 ppm440.0280 ppm - 0.0312 ppm
20190.0308 ppm440.0213 ppm - 0.0368 ppm
20200.0254 ppm43ND - 0.0411 ppm
20210.0319 ppm54ND - 0.0534 ppm
20220.0671 ppm550.0203 ppm - 0.130 ppm
20230.0525 ppm550.0203 ppm - 0.0965 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
2018-08-08Q18317170080.0280 ppm
2018-08-08Q18317170100.0281 ppm
2018-08-08Q18317170180.0312 ppm
2018-08-08Q18317170070.0285 ppm
2019-05-01Q19175150070.0368 ppm
2019-05-01Q19175150080.0213 ppm
2019-05-01Q19175150200.0296 ppm
2019-05-01Q19175150210.0354 ppm
2020-09-21Q2037371011ND
2020-11-24Q20468900210.0411 ppm
2020-11-24Q20468900250.0403 ppm
2020-11-24Q20468900260.0203 ppm
2021-03-17Q21069840050.0466 ppm
2021-03-17Q21069840060.0382 ppm
2021-03-17Q2106984004ND
2021-06-01Q21140220180.0534 ppm
2021-06-01Q21140220190.0213 ppm
2022-02-22Q22062420040.0427 ppm
2022-02-22Q22062420050.0203 ppm
2022-11-03Q22334760070.106 ppm
2022-11-03Q22334760080.130 ppm
2022-11-03Q22334760160.0363 ppm
2023-01-11Q23017700010.0393 ppm
2023-04-05Q23126450010.0203 ppm
2023-10-11Q23434530120.0309 ppm
2023-10-11Q23434530130.0756 ppm
2023-10-11Q23434530140.0965 ppm