Know Your Environment. Protect Your Health.

Nitrate

Hitchcock Rd Ws #01

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)

28

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.05 ppm440.600 ppm - 2.00 ppm
20190.767 ppm660.1000 ppm - 1.60 ppm
20200.375 ppm880.1000 ppm - 0.800 ppm
20210.217 ppm64ND - 0.600 ppm
20220.400 ppm550.200 ppm - 0.700 ppm
20230.500 ppm550.200 ppm - 0.700 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
2018-03-26CA2702320_001_001-2018032613100.600 ppm
2018-06-14CA2702320_001_001-2018061410001.000 ppm
2018-09-18CA2702320_001_001-2018091815200.600 ppm
2018-12-17CA2702320_001_001-2018121711202.00 ppm
2019-03-21CA2702320_001_001-2019032115551.60 ppm
2019-04-25CA2702320_002_002-2019042509000.200 ppm
2019-05-22CA2702320_001_001-2019052214300.800 ppm
2019-09-17CA2702320_001_001-2019091712100.500 ppm
2019-11-20CA2702320_002_002-2019112011500.1000 ppm
2019-12-10CA2702320_001_001-2019121010501.40 ppm
2020-03-16CA2702320_001_001-2020031615300.800 ppm
2020-03-18CA2702320_002_002-2020031811000.200 ppm
2020-06-09CA2702320_001_001-2020060913000.600 ppm
2020-07-02CA2702320_002_002-2020070211000.1000 ppm
2020-09-01CA2702320_002_002-2020090109000.1000 ppm
2020-09-15CA2702320_001_001-2020091512100.400 ppm
2020-12-09CA2702320_001_001-2020120914000.600 ppm
2020-12-15CA2702320_002_002-2020121508300.200 ppm
2021-05-19CA2702320_002_002-2021051909150.1000 ppm
2021-06-16CA2702320_001_001-2021061614300.300 ppm
2021-08-30CA2702320_002_002-202108300938ND
2021-09-15CA2702320_001_001-2021091513450.300 ppm
2021-12-21CA2702320_002_002-202112211300ND
2021-12-21CA2702320_001_001-2021122112200.600 ppm
2022-03-10CA2702320_002_002-2022031011250.200 ppm
2022-03-10CA2702320_001_001-2022031011110.700 ppm
2022-06-08CA2702320_001_001-2022060814080.200 ppm
2022-08-15CA2702320_001_001-2022081512300.300 ppm
2022-12-12CA2702320_001_001-2022121213050.600 ppm
2023-03-13CA2702320_001_001-2023031311500.700 ppm
2023-06-20CA2702320_001_001-2023062013250.200 ppm
2023-09-14CA2702320_001_001-2023091412300.300 ppm
2023-11-28CA2702320_001_001-2023112814060.600 ppm
2023-12-18CA2702320_001_001-2023121813370.700 ppm