Know Your Environment. Protect Your Health.

Nitrate and nitrite

Parkside

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.

 

17

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.95 ppm1614ND - 4.74 ppm
20193.30 ppm1714ND - 7.94 ppm
20203.19 ppm1714ND - 7.81 ppm
20213.41 ppm1714ND - 7.89 ppm
2022ND50ND
2023ND120ND

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
2022-09-13S1220494ND
2022-10-06S1220523ND
2022-11-08S1220569ND
2022-11-15S1220591ND
2022-12-06S1220604ND
2023-01-03S1235164ND
2023-02-07S1235194ND
2023-03-07S1235226ND
2023-04-04S1235264ND
2023-05-03S1235312ND
2023-06-06S1235337ND
2023-07-18S1235390ND
2023-08-01S1235411ND
2023-09-05S1235444ND
2023-09-22S1159259ND
2023-10-02S1235490ND
2023-11-07S1235530ND