Know Your Environment. Protect Your Health.

Nitrate

Midvale Water System

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.182 ppm31ND - 0.545 ppm
20190.173 ppm31ND - 0.520 ppm
2020ND30ND
20210.144 ppm32ND - 0.390 ppm
2022ND30ND
20230.211 ppm32ND - 0.577 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
2018-04-03IE180400043-001ND
2018-08-21IE180800187-002ND
2018-08-21IE180800187-0010.545 ppm
2019-11-19IE191100142-003ND
2019-11-19IE191100142-0020.520 ppm
2019-11-19IE191100142-001ND
2020-11-10I2057109ND
2020-11-10I2057107ND
2020-12-29IE201200232-001ND
2021-01-19IE210100140-001ND
2021-08-24IE210800225-0010.390 ppm
2021-08-24IE210800225-0020.0431 ppm
2022-12-12IE221200102-001ND
2022-12-12IE221200121-001ND
2022-12-12IE221200121-002ND
2023-10-03IE231000120-001ND
2023-10-03IE231000120-0020.577 ppm
2023-10-03IE231000120-0030.0571 ppm