Know Your Environment. Protect Your Health.

Nitrate

Two Way Special Utility District

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.

 

34

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0271 ppm660.0101 ppm - 0.0337 ppm
20190.0329 ppm660.0273 ppm - 0.0369 ppm
20200.0387 ppm550.0330 ppm - 0.0451 ppm
20210.0344 ppm660.0213 ppm - 0.0471 ppm
20220.0374 ppm660.0125 ppm - 0.0546 ppm
20230.0303 ppm550.0174 ppm - 0.0386 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
2018-06-25Q18252510040.0329 ppm
2018-06-25Q18252510050.0337 ppm
2018-06-25Q18252510200.0330 ppm
2018-06-25Q18252510210.0101 ppm
2018-06-25Q18252510220.0315 ppm
2018-06-25Q18252510030.0211 ppm
2019-10-14Q19724590160.0305 ppm
2019-10-14Q19724590170.0273 ppm
2019-10-14Q19724590180.0360 ppm
2019-12-11Q19797710020.0302 ppm
2019-12-11Q19797710030.0369 ppm
2019-12-11Q19797710010.0362 ppm
2020-08-25Q20341160060.0341 ppm
2020-10-12Q20397720180.0391 ppm
2020-10-12Q20397720190.0421 ppm
2020-10-12Q20397720200.0330 ppm
2020-10-12Q20397720360.0451 ppm
2021-11-09Q21313410060.0400 ppm
2021-11-09Q21313410110.0471 ppm
2021-11-09Q21313410100.0254 ppm
2021-11-09Q21313410090.0325 ppm
2021-11-09Q21313410080.0398 ppm
2021-11-09Q21313410070.0213 ppm
2022-10-11Q22306630030.0241 ppm
2022-10-11Q22306630190.0514 ppm
2022-10-11Q22306630200.0125 ppm
2022-10-11Q22306630210.0504 ppm
2022-10-11Q22306630230.0546 ppm
2022-12-06Q22363350030.0314 ppm
2023-07-24Q23292180060.0386 ppm
2023-10-31Q23465260150.0313 ppm
2023-10-31Q23465260200.0300 ppm
2023-10-31Q23465260210.0174 ppm
2023-10-31Q23465260220.0340 ppm