Know Your Environment. Protect Your Health.

Nitrate and nitrite

Hot Springs Municipal Water

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.

 

14

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND30ND
20200.00500 ppm21ND - 0.01000 ppm
20210.1000 ppm21ND - 0.200 ppm
20220.0150 ppm21ND - 0.0300 ppm
20230.1000 ppm31ND - 0.300 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
2018-12-241813133-01ND
2018-12-241813133-02ND
2019-01-071900228-01ND
2019-02-201901606-01ND
2019-02-201901606-02ND
2020-11-052012006-010.01000 ppm
2020-11-052012006-02ND
2021-01-112100416-010.200 ppm
2021-01-112100416-02ND
2022-10-042210917-010.0300 ppm
2022-10-042210917-02ND
2023-02-232301606-010.300 ppm
2023-02-232301606-02ND
2023-02-232301606-03ND