Know Your Environment. Protect Your Health.

Nitrate

City of Chandler

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.

 

29

Samples

0

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0723 ppm550.0121 ppm - 0.178 ppm
20190.0371 ppm550.0162 ppm - 0.106 ppm
20200.0282 ppm440.0175 ppm - 0.0405 ppm
20210.0372 ppm550.0200 ppm - 0.0612 ppm
20220.0334 ppm550.0195 ppm - 0.0596 ppm
20230.0585 ppm550.0193 ppm - 0.113 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
2018-05-31Q18217760080.0205 ppm
2018-05-31Q18217760050.0121 ppm
2018-10-15Q18409310100.178 ppm
2018-10-15Q18409310110.0177 ppm
2018-10-15Q18409310120.133 ppm
2019-03-19Q19113480010.0162 ppm
2019-03-19Q19113480030.0232 ppm
2019-03-19Q19113480040.106 ppm
2019-03-19Q19113480050.0174 ppm
2019-09-11Q19638710070.0228 ppm
2020-03-24Q20124360170.0286 ppm
2020-03-24Q20124360180.0175 ppm
2020-03-24Q20124360230.0260 ppm
2020-06-23Q20250850130.0405 ppm
2021-05-04Q21113160130.0415 ppm
2021-05-04Q21113160160.0216 ppm
2021-05-04Q21113160150.0612 ppm
2021-05-04Q21113160140.0416 ppm
2021-12-15Q21355080040.0200 ppm
2022-03-31Q22100900170.0203 ppm
2022-03-31Q22100900210.0315 ppm
2022-03-31Q22100900220.0359 ppm
2022-03-31Q22100900230.0195 ppm
2022-03-31Q22100900240.0596 ppm
2023-01-12Q23019510010.0193 ppm
2023-01-12Q23019510080.0290 ppm
2023-01-12Q23019510090.0253 ppm
2023-10-02Q23420880100.113 ppm
2023-10-02Q23420880130.106 ppm