Know Your Environment. Protect Your Health.

Nitrate

Crestwood Water Company

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.

 

12

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0197 ppm21ND - 0.0393 ppm
20190.300 ppm220.0674 ppm - 0.533 ppm
20200.0317 ppm21ND - 0.0634 ppm
20210.00830 ppm21ND - 0.0166 ppm
20220.0297 ppm220.0193 ppm - 0.0400 ppm
20230.0656 ppm220.0578 ppm - 0.0733 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
2018-06-20Q18245990070.0393 ppm
2018-06-20Q1824599015ND
2019-02-26Q19082610030.533 ppm
2019-02-26Q19082610040.0674 ppm
2020-05-12Q2018385006ND
2020-05-12Q20183850070.0634 ppm
2021-12-16Q21357120160.0166 ppm
2021-12-16Q2135712017ND
2022-03-16Q22088810050.0400 ppm
2022-11-22Q22351290050.0193 ppm
2023-02-02Q23041560080.0733 ppm
2023-02-02Q23041560090.0578 ppm