Know Your Environment. Protect Your Health.

Nitrate and nitrite

Smith Mobile Home Village Water System

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.

 

22

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND60ND
2019ND40ND
2020ND40ND
20210.200 ppm220.200 ppm
2022ND30ND
20230.167 ppm31ND - 0.500 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
2018-01-22AE20427ND
2018-01-22AE20479ND
2018-01-22AE20483ND
2018-01-22AE20427ND
2018-01-22AE20479ND
2018-01-22AE20483ND
2019-01-10B1900194-002ND
2019-01-10B1900194-001ND
2019-01-10B1900194-002ND
2019-01-10B1900194-001ND
2020-01-14B2000188-002ND
2020-01-14B2000189-002ND
2020-01-14B2000189-001ND
2020-01-14B2000188-001ND
2021-01-12B2100150-0010.200 ppm
2021-01-12B2100150-0020.200 ppm
2022-02-22B2200783-001ND
2022-02-22B2200783-002ND
2022-03-14B2201101-002ND
2023-01-10B2300103-002ND
2023-10-18B2304598-001ND
2023-12-04B2305140-0010.500 ppm