Know Your Environment. Protect Your Health.

Nitrate

City of Sansom Park

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.

 

38

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0724 ppm660.0320 ppm - 0.225 ppm
20190.0454 ppm660.0294 ppm - 0.0630 ppm
20200.0459 ppm660.0295 ppm - 0.0803 ppm
20210.0615 ppm770.0439 ppm - 0.0731 ppm
20220.0812 ppm770.0398 ppm - 0.141 ppm
20230.119 ppm660.0360 ppm - 0.388 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
2018-03-28Q18128460170.0336 ppm
2018-03-28Q18128460180.0320 ppm
2018-03-28Q18128460190.0353 ppm
2018-03-28Q18128460200.0514 ppm
2018-03-28Q18128460160.225 ppm
2018-10-25Q18427220040.0569 ppm
2019-05-02Q19181460140.0396 ppm
2019-05-02Q19181460150.0387 ppm
2019-05-02Q19181460130.0569 ppm
2019-05-02Q19181460120.0449 ppm
2019-05-02Q19181460110.0294 ppm
2019-05-02Q19181460100.0630 ppm
2020-01-21Q20022790180.0481 ppm
2020-01-21Q20022790190.0328 ppm
2020-01-21Q20022790200.0295 ppm
2020-01-21Q20022790210.0803 ppm
2020-09-01Q20348330090.0425 ppm
2020-09-01Q20348330100.0420 ppm
2021-03-09Q21061210220.0679 ppm
2021-03-09Q21061210260.0702 ppm
2021-03-09Q21061210250.0635 ppm
2021-03-09Q21061210230.0514 ppm
2021-03-09Q21061210210.0607 ppm
2021-03-09Q21061210240.0439 ppm
2021-09-14Q21249990090.0731 ppm
2022-03-14Q22085290080.0606 ppm
2022-10-13Q22310740200.0837 ppm
2022-10-13Q22310740220.0398 ppm
2022-10-13Q22310740210.0711 ppm
2022-10-13Q22310740190.0830 ppm
2022-10-13Q22310740180.0894 ppm
2022-10-13Q22310740170.141 ppm
2023-04-13Q23137130030.388 ppm
2023-08-15Q23340870070.111 ppm
2023-08-15Q23340870210.0604 ppm
2023-08-15Q23340870220.0620 ppm
2023-08-15Q23340870230.0566 ppm
2023-08-15Q23340870240.0360 ppm