Know Your Environment. Protect Your Health.

Nitrate and nitrite

Minden 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.

 

30

Samples

0

Samples exceeding legal limit (MCL)

19

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.610 ppm1814ND - 1.50 ppm
20190.270 ppm42ND - 0.540 ppm
20200.550 ppm21ND - 1.10 ppm
20210.800 ppm220.400 ppm - 1.20 ppm
20220.600 ppm21ND - 1.20 ppm
20230.550 ppm21ND - 1.10 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
2018-06-25354007420080.380 ppm
2018-06-2535400742006ND
2018-06-25354007420050.120 ppm
2018-06-2535400742004ND
2018-06-25354007420031.30 ppm
2018-06-25354007420020.930 ppm
2018-06-25354007420010.600 ppm
2018-06-25354007420070.660 ppm
2018-06-25354007420080.380 ppm
2018-06-25354007420091.50 ppm
2018-06-25354007420070.660 ppm
2018-06-2535400742006ND
2018-06-25354007420050.120 ppm
2018-06-2535400742004ND
2018-06-25354007420031.30 ppm
2018-06-25354007420020.930 ppm
2018-06-25354007420010.600 ppm
2018-06-25354007420091.50 ppm
2019-03-26354581900010.540 ppm
2019-03-26354581900010.540 ppm
2019-11-0135509626001ND
2019-11-0135509626001ND
2020-10-13B2005357-0011.10 ppm
2020-10-13B2005357-002ND
2021-04-13B2101674-0101.20 ppm
2021-04-15B2102097-0010.400 ppm
2022-06-14B2203056-0011.20 ppm
2022-06-14B2203056-002ND
2023-09-13B2303920-0011.10 ppm
2023-09-13B2303920-002ND