Know Your Environment. Protect Your Health.

Nitrate and nitrite

Lakehaven Utility District

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

 

32

Samples

0

Samples exceeding legal limit (MCL)

18

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.427 ppm229ND - 2.20 ppm
20191.40 ppm65ND - 2.47 ppm
2020N/A00N/A
2021N/A00N/A
2022N/A00N/A
20231.38 ppm440.770 ppm - 2.69 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

ppm = parts per million

All test results

Date Lab ID Result
2018-01-110.520 ppm
2018-01-170.850 ppm
2018-02-270.630 ppm
2018-05-08ND
2018-05-081.40 ppm
2018-05-08ND
2018-05-082.20 ppm
2018-05-150.550 ppm
2018-06-12ND
2018-06-12ND
2018-06-19ND
2018-06-19ND
2018-07-100.580 ppm
2018-07-100.580 ppm
2018-07-17ND
2018-07-17ND
2018-07-17ND
2018-08-08ND
2018-08-29ND
2018-08-31ND
2018-08-31ND
2018-10-022.09 ppm
2019-02-072.47 ppm
2019-02-072.20 ppm
2019-02-070.930 ppm
2019-02-071.59 ppm
2019-07-311.20 ppm
2019-09-04ND
2023-07-1144913431.02 ppm
2023-07-1144913431.02 ppm
2023-07-2544973330.770 ppm
2023-08-3145139782.69 ppm