Know Your Environment. Protect Your Health.

Nitrate

Centerville 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.

 

6

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0840 ppm110.0840 ppm
20190.0297 ppm110.0297 ppm
20200.0434 ppm110.0434 ppm
20210.0473 ppm110.0473 ppm
20220.0392 ppm110.0392 ppm
20230.0512 ppm110.0512 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
2018-02-06Q18048220040.0840 ppm
2019-03-26Q19123490010.0297 ppm
2020-02-20Q20066100040.0434 ppm
2021-10-06Q21275840040.0473 ppm
2022-01-25Q22025390040.0392 ppm
2023-01-04Q23005580040.0512 ppm