Know Your Environment. Protect Your Health.

Nitrate and nitrite

Beauregard Water Works District #3

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.

 

70

Samples

0

Samples exceeding legal limit (MCL)

11

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.0412 ppm344ND - 0.500 ppm
20190.0500 ppm124ND - 0.200 ppm
20200.0833 ppm62ND - 0.300 ppm
20210.0833 ppm62ND - 0.300 ppm
2022ND60ND
20230.0667 ppm61ND - 0.400 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
2018-01-30AE20533ND
2018-01-30AE20528ND
2018-01-30AE20533ND
2018-01-30AE20532ND
2018-01-30AE20531ND
2018-01-30AE20530ND
2018-01-30AE20529ND
2018-01-30AE20528ND
2018-01-30AE20532ND
2018-01-30AE20531ND
2018-01-30AE20530ND
2018-01-30AE20529ND
2018-02-27AE207750.500 ppm
2018-02-27AE207750.500 ppm
2018-03-19AE21152ND
2018-03-19AE211550.200 ppm
2018-03-19AE21158ND
2018-03-19AE21161ND
2018-03-19AE21164ND
2018-03-19AE21164ND
2018-03-19AE21161ND
2018-03-19AE21158ND
2018-03-19AE211550.200 ppm
2018-03-19AE21152ND
2018-04-16AE21398ND
2018-04-16AE21401ND
2018-04-16AE21410ND
2018-04-16AE21407ND
2018-04-16AE21398ND
2018-04-16AE21401ND
2018-04-16AE21404ND
2018-04-16AE21407ND
2018-04-16AE21410ND
2018-04-16AE21404ND
2019-01-15B1900286-001ND
2019-01-15B1900286-004ND
2019-01-15B1900286-0030.1000 ppm
2019-01-15B1900286-0020.200 ppm
2019-01-15B1900286-001ND
2019-01-15B1900286-005ND
2019-01-15B1900286-004ND
2019-01-15B1900286-0030.1000 ppm
2019-01-15B1900286-0020.200 ppm
2019-01-15B1900286-005ND
2019-02-08B1900608-001ND
2019-02-08B1900608-001ND
2020-01-22B2000265-001ND
2020-01-22B2000265-006ND
2020-01-22B2000265-0050.200 ppm
2020-01-22B2000265-004ND
2020-01-22B2000265-003ND
2020-01-22B2000265-0020.300 ppm
2021-02-02B2100535-0050.300 ppm
2021-02-02B2100535-0060.200 ppm
2021-03-16B2101237-006ND
2021-03-16B2101237-007ND
2021-03-16B2101237-008ND
2021-04-27B2101879-003ND
2022-03-17B2201265-001ND
2022-03-17B2201265-002ND
2022-03-17B2201265-003ND
2022-03-17B2201265-004ND
2022-03-17B2201265-005ND
2022-03-17B2201265-006ND
2023-07-24B2302949-006ND
2023-07-24B2302949-007ND
2023-07-24B2302949-008ND
2023-07-24B2302949-009ND
2023-08-07B2303189-007ND
2023-08-07B2303189-0080.400 ppm