Know Your Environment. Protect Your Health.

Nitrate

Harleton Water Supply Corporation

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

6

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.336 ppm220.258 ppm - 0.413 ppm
20190.107 ppm220.0740 ppm - 0.139 ppm
20200.198 ppm220.1000 ppm - 0.296 ppm
20210.221 ppm220.109 ppm - 0.332 ppm
20220.0775 ppm21ND - 0.155 ppm
20230.508 ppm110.508 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
2018-08-15Q18329030010.258 ppm
2018-08-15Q18329030060.413 ppm
2019-03-25Q19120200010.0740 ppm
2019-03-25Q19120200060.139 ppm
2020-03-16Q20105450090.1000 ppm
2020-08-10Q20313670030.296 ppm
2021-03-03Q21056080020.332 ppm
2021-03-03Q21056080050.109 ppm
2022-06-08Q2216070004ND
2022-09-07Q22266960010.155 ppm
2023-02-16Q23065310090.508 ppm