Know Your Environment. Protect Your Health.

Nitrate

City of Hearne

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
20180.0500 ppm43ND - 0.110 ppm
20190.0275 ppm42ND - 0.0600 ppm
20200.0150 ppm41ND - 0.0600 ppm
20210.0575 ppm43ND - 0.110 ppm
20220.0400 ppm43ND - 0.0600 ppm
20230.0125 ppm41ND - 0.0500 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
2018-06-21AE308930.110 ppm
2018-06-21AE30894ND
2018-06-21AE308950.0300 ppm
2018-06-21AE308920.0600 ppm
2019-05-16AE66708ND
2019-05-16AE66709ND
2019-05-16AE667100.0600 ppm
2019-05-16AE667190.0500 ppm
2020-04-23AF078200.0600 ppm
2020-06-30AF17353ND
2020-06-30AF17356ND
2020-06-30AF17357ND
2021-06-08AF568010.110 ppm
2021-06-08AF568040.0600 ppm
2021-06-08AF56803ND
2021-06-08AF568020.0600 ppm
2022-06-22AG018250.0600 ppm
2022-06-22AG01826ND
2022-06-22AG018270.0500 ppm
2022-06-22AG018450.0500 ppm
2023-06-13AG44069ND
2023-06-13AG44096ND
2023-06-13AG44097ND
2023-06-13AG440980.0500 ppm