Know Your Environment. Protect Your Health.

Nitrate and nitrite

City of Denham Springs 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.

 

51

Samples

0

Samples exceeding legal limit (MCL)

3

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND140ND
2019ND120ND
2020ND70ND
20210.0857 ppm73ND - 0.200 ppm
2022ND50ND
2023ND60ND

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
2018-01-31AE20520ND
2018-01-31AE20520ND
2018-05-03B1801883-003ND
2018-05-03B1801883-002ND
2018-05-03B1801883-001ND
2018-05-03B1801883-003ND
2018-05-03B1801883-001ND
2018-05-03B1801883-002ND
2018-09-11B1804164-003ND
2018-09-11B1804164-001ND
2018-09-11B1804164-002ND
2018-09-11B1804164-002ND
2018-09-11B1804164-001ND
2018-09-11B1804164-003ND
2019-05-28B1902220-002ND
2019-05-28B1902220-006ND
2019-05-28B1902220-005ND
2019-05-28B1902220-003ND
2019-05-28B1902220-002ND
2019-05-28B1902220-001ND
2019-05-28B1902220-006ND
2019-05-28B1902220-005ND
2019-05-28B1902220-004ND
2019-05-28B1902220-003ND
2019-05-28B1902220-001ND
2019-05-28B1902220-004ND
2020-07-06B2003405-012ND
2020-07-06B2003405-011ND
2020-07-06B2003405-010ND
2020-07-07B2003405-007ND
2020-07-07B2003405-009ND
2020-07-07B2003405-008ND
2020-11-30B2006403-002ND
2021-05-26B2102470-001ND
2021-05-26B2102470-0060.200 ppm
2021-05-26B2102470-0050.200 ppm
2021-05-26B2102470-004ND
2021-05-26B2102470-0030.200 ppm
2021-05-26B2102470-002ND
2021-11-29B2106406-001ND
2022-08-23B2203977-001ND
2022-08-23B2203977-002ND
2022-08-23B2203977-004ND
2022-08-24B2204024-002ND
2022-11-29B2205601-001ND
2023-07-31B2303121-006ND
2023-07-31B2303121-007ND
2023-07-31B2303121-008ND
2023-07-31B2303121-009ND
2023-07-31B2303121-010ND
2023-12-27B2305393-001ND