Know Your Environment. Protect Your Health.

Nitrate

Fcwwd #41/shaver Lake

Nitrate, a fertilizer chemical, frequently contaminates drinking water due to agricultural and urban runoff, and discharges from municipal wastewater treatment plants and septic tanks. Excessive nitrate in water can cause oxygen deprivation in infants and increase the risk of cancer. Click here to read more about nitrate.

 

234

Samples

0

Samples exceeding legal limit (MCL)

9

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.00959 ppm491ND - 0.470 ppm
2019ND420ND
2020ND350ND
20210.0313 ppm312ND - 0.520 ppm
20220.0616 ppm444ND - 0.800 ppm
20230.0388 ppm332ND - 0.830 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

The legal limit for nitrate, established in 1962, was developed to protect infants from acute methemoglobinemia, a life-threatening disorder of oxygen transport in the body. This limit does not fully protect against the risk of cancer and harm to the developing fetus.

ppm = parts per million

All test results

Date Lab ID Result
2018-03-12CA1010017_005_005-201803121119ND
2018-03-12CA1010017_008_008-201803121200ND
2018-03-12CA1010017_014_014-201803121310ND
2018-03-12CA1010017_001_001-201803121055ND
2018-03-12CA1010017_015_015-201803121341ND
2018-03-12CA1010017_033_033-201803121239ND
2018-03-14CA1010017_062_062-201803141234ND
2018-03-14CA1010017_065_065-201803141353ND
2018-03-14CA1010017_004_004-201803141053ND
2018-03-14CA1010017_034_034-201803140320ND
2018-03-16CA1010017_006_006-201803161041ND
2018-03-16CA1010017_035_035-201803161334ND
2018-03-16CA1010017_036_036-201803161304ND
2018-03-16CA1010017_012_012-201803161225ND
2018-03-16CA1010017_011_011-201803161212ND
2018-03-19CA1010017_009_009-201803191332ND
2018-03-19CA1010017_042_042-201803191207ND
2018-03-19CA1010017_002_002-201803190815ND
2018-03-21CA1010017_059_059-201803210958ND
2018-04-09CA1010017_004_004-201804091113ND
2018-04-09CA1010017_005_005-2018040911170.470 ppm
2018-04-09CA1010017_002_002-201804091055ND
2018-04-09CA1010017_033_033-201804091159ND
2018-04-09CA1010017_001_001-201804091058ND
2018-04-11CA1010017_056_056-201804111057ND
2018-04-11CA1010017_006_006-201804111318ND
2018-04-11CA1010017_057_057-201804111044ND
2018-04-11CA1010017_065_065-201804111229ND
2018-04-11CA1010017_008_008-201804111212ND
2018-04-11CA1010017_058_058-201804111030ND
2018-04-11CA1010017_059_059-201804111240ND
2018-04-13CA1010017_034_034-201804131345ND
2018-04-13CA1010017_014_014-201804131404ND
2018-04-13CA1010017_062_062-201804131313ND
2018-04-13CA1010017_015_015-201804131040ND
2018-04-13CA1010017_066_066-201804131325ND
2018-04-18CA1010017_012_012-201804181148ND
2018-04-18CA1010017_036_036-201804181054ND
2018-04-18CA1010017_011_011-201804181135ND
2018-04-18CA1010017_035_035-201804181037ND
2018-04-20CA1010017_040_040-201804201203ND
2018-04-20CA1010017_041_041-201804201149ND
2018-04-20CA1010017_043_043-201804201210ND
2018-04-20CA1010017_044_044-201804201225ND
2018-04-20CA1010017_037_037-201804201100ND
2018-04-20CA1010017_046_046-201804201040ND
2018-04-20CA1010017_009_009-201804201329ND
2018-04-20CA1010017_038_038-201804201123ND
2018-04-20CA1010017_042_042-201804201155ND
2019-03-27CA1010017_044_044-201903271020ND
2019-06-19CA1010017_057_057-201906190910ND
2019-06-19CA1010017_066_066-201906190957ND
2019-06-19CA1010017_044_044-201906191320ND
2019-06-19CA1010017_059_059-201906190955ND
2019-06-19CA1010017_041_041-201906191120ND
2019-06-19CA1010017_043_043-201906191310ND
2019-06-19CA1010017_056_056-201906190926ND
2019-06-19CA1010017_058_058-201906190855ND
2019-06-19CA1010017_037_037-201906191030ND
2019-06-19CA1010017_040_040-201906191115ND
2019-06-19CA1010017_046_046-201906191000ND
2019-06-19CA1010017_065_065-201906190940ND
2019-06-26CA1010017_066_066-201906261230ND
2019-08-28CA1010017_001_001-201908280940ND
2019-08-28CA1010017_005_005-201908281007ND
2019-08-28CA1010017_008_008-201908281243ND
2019-08-28CA1010017_011_011-201908281541ND
2019-08-28CA1010017_034_034-201908281152ND
2019-08-28CA1010017_041_041-201908281431ND
2019-08-28CA1010017_042_042-201908281426ND
2019-08-28CA1010017_058_058-201908281045ND
2019-08-28CA1010017_059_059-201908281213ND
2019-08-28CA1010017_038_038-201908281415ND
2019-08-28CA1010017_040_040-201908281435ND
2019-08-28CA1010017_004_004-201908281022ND
2019-08-28CA1010017_062_062-201908281128ND
2019-08-28CA1010017_066_066-201908281139ND
2019-08-28CA1010017_002_002-201908280945ND
2019-08-28CA1010017_006_006-201908281342ND
2019-08-28CA1010017_009_009-201908281610ND
2019-08-28CA1010017_043_043-201908281443ND
2019-08-28CA1010017_065_065-201908281237ND
2019-08-29CA1010017_056_056-201908291108ND
2019-08-29CA1010017_057_057-201908291120ND
2019-12-11CA1010017_012_012-201912110720ND
2019-12-11CA1010017_033_033-201912110830ND
2019-12-11CA1010017_035_035-201912110730ND
2019-12-11CA1010017_014_014-201912110815ND
2019-12-11CA1010017_015_015-201912110820ND
2019-12-11CA1010017_036_036-201912110735ND
2019-12-18CA1010017_038_038-201912180933ND
2020-03-11CA1010017_004_004-202003111144ND
2020-03-11CA1010017_006_006-202003110915ND
2020-03-11CA1010017_033_033-202003111052ND
2020-03-11CA1010017_056_056-202003111213ND
2020-03-11CA1010017_057_057-202003111220ND
2020-03-11CA1010017_058_058-202003111207ND
2020-03-11CA1010017_065_065-202003111009ND
2020-03-11CA1010017_014_014-202003110949ND
2020-03-11CA1010017_059_059-202003111012ND
2020-03-11CA1010017_066_066-202003111030ND
2020-03-11CA1010017_008_008-202003110955ND
2020-03-11CA1010017_009_009-202003111149ND
2020-03-11CA1010017_034_034-202003111023ND
2020-03-11CA1010017_062_062-202003111045ND
2020-03-11CA1010017_001_001-202003111120ND
2020-03-11CA1010017_002_002-202003111125ND
2020-03-11CA1010017_005_005-202003111137ND
2020-03-11CA1010017_015_015-202003110943ND
2020-03-11CA1010017_046_046-202003110920ND
2020-04-21CA1010017_002_002-202004210850ND
2020-05-06CA1010017_047_047-202005061050ND
2020-05-06CA1010017_048_048-202005060920ND
2020-05-06CA1010017_049_049-202005061025ND
2020-12-09CA1010017_002_002-202012091347ND
2020-12-09CA1010017_011_011-202012091230ND
2020-12-09CA1010017_035_035-202012091200ND
2020-12-09CA1010017_040_040-202012091138ND
2020-12-09CA1010017_042_042-202012091130ND
2020-12-09CA1010017_044_044-202012091147ND
2020-12-09CA1010017_041_041-202012091127ND
2020-12-09CA1010017_012_012-202012091245ND
2020-12-09CA1010017_036_036-202012091205ND
2020-12-21CA1010017_037_037-202012211230ND
2020-12-21CA1010017_038_038-202012211250ND
2020-12-21CA1010017_043_043-202012211240ND
2021-03-08CA1010017_009_009-202103081140ND
2021-03-08CA1010017_001_001-202103081300ND
2021-04-05CA1010017_004_004-2021040511200.520 ppm
2021-04-05CA1010017_006_006-202104050900ND
2021-04-05CA1010017_008_008-202104051100ND
2021-04-06CA1010017_042_042-202104061230ND
2021-04-06CA1010017_011_011-202104061245ND
2021-04-06CA1010017_012_012-202104061300ND
2021-04-12CA1010017_014_014-202104121400ND
2021-04-12CA1010017_015_015-202104121345ND
2021-04-13CA1010017_034_034-202104131155ND
2021-04-13CA1010017_062_062-202104131300ND
2021-04-13CA1010017_065_065-202104131235ND
2021-04-14CA1010017_033_033-202104141300ND
2021-04-14CA1010017_005_005-202104141326ND
2021-04-19CA1010017_035_035-202104191045ND
2021-04-19CA1010017_036_036-202104191055ND
2021-04-27CA1010017_041_041-202104271010ND
2021-04-27CA1010017_059_059-202104271130ND
2021-04-27CA1010017_066_066-202104271120ND
2021-04-27CA1010017_002_002-202104271300ND
2021-04-27CA1010017_037_037-202104270930ND
2021-04-27CA1010017_040_040-202104270950ND
2021-04-27CA1010017_041_041-202104271000ND
2021-04-27CA1010017_044_044-202104271015ND
2021-04-27CA1010017_046_046-202104271200ND
2021-04-27CA1010017_056_056-202104270855ND
2021-04-27CA1010017_057_057-202104270845ND
2021-04-27CA1010017_058_058-202104270835ND
2021-06-01CA1010017_043_043-2021060110350.450 ppm
2021-11-08CA1010017_038_038-202111081135ND
2022-02-11CA1010017_041_041-202202111400ND
2022-02-11CA1010017_066_066-202202111100ND
2022-03-02CA1010017_059_059-202203021255ND
2022-03-02CA1010017_001_001-202203021200ND
2022-03-02CA1010017_009_009-2022030214200.800 ppm
2022-03-02CA1010017_065_065-202203021240ND
2022-03-08CA1010017_001_001-202203081420ND
2022-03-08CA1010017_033_033-202203081225ND
2022-03-08CA1010017_036_036-202203081050ND
2022-03-08CA1010017_041_041-202203080915ND
2022-03-08CA1010017_062_062-202203081335ND
2022-03-08CA1010017_008_008-202203081215ND
2022-03-08CA1010017_037_037-202203080940ND
2022-03-08CA1010017_043_043-202203080910ND
2022-03-08CA1010017_044_044-202203080900ND
2022-03-08CA1010017_057_057-202203081350ND
2022-03-08CA1010017_066_066-202203081330ND
2022-03-08CA1010017_035_035-202203081045ND
2022-03-08CA1010017_046_046-202203081300ND
2022-03-08CA1010017_059_059-202203081320ND
2022-03-08CA1010017_065_065-202203081310ND
2022-03-08CA1010017_009_009-2022030812000.800 ppm
2022-03-08CA1010017_034_034-202203081325ND
2022-03-08CA1010017_040_040-202203080930ND
2022-03-08CA1010017_042_042-202203080925ND
2022-03-08CA1010017_056_056-202203081340ND
2022-03-08CA1010017_058_058-202203081400ND
2022-04-06CA1010017_037_037-202204061135ND
2022-04-06CA1010017_044_044-202204061030ND
2022-04-06CA1010017_040_040-202204061105ND
2022-04-06CA1010017_043_043-202204061045ND
2022-04-12CA1010017_058_058-202204121345ND
2022-04-12CA1010017_057_057-202204121325ND
2022-04-12CA1010017_056_056-202204121305ND
2022-04-19CA1010017_046_046-202204191300ND
2022-04-19CA1010017_038_038-202204191030ND
2022-05-13CA1010017_005_005-2022051312350.570 ppm
2022-05-13CA1010017_012_012-202205131325ND
2022-05-13CA1010017_015_015-202205131250ND
2022-05-13CA1010017_002_002-202205131205ND
2022-05-13CA1010017_004_004-2022051312250.540 ppm
2022-05-13CA1010017_006_006-202205131255ND
2022-05-13CA1010017_011_011-202205131315ND
2022-05-13CA1010017_014_014-202205131245ND
2023-04-24CA1010017_048_048-202304241140ND
2023-04-24CA1010017_049_049-202304241210ND
2023-04-24CA1010017_047_047-202304241125ND
2023-04-24CA1010017_002_002-202304241100ND
2023-05-16CA1010017_033_033-202305161300ND
2023-05-16CA1010017_035_035-202305161000ND
2023-05-16CA1010017_038_038-202305161015ND
2023-05-16CA1010017_065_065-202305161220ND
2023-05-16CA1010017_037_037-2023051610100.450 ppm
2023-05-16CA1010017_044_044-202305161050ND
2023-05-16CA1010017_008_008-202305161235ND
2023-05-16CA1010017_014_014-202305161240ND
2023-05-16CA1010017_034_034-202305161205ND
2023-05-16CA1010017_036_036-202305161005ND
2023-05-16CA1010017_040_040-202305161040ND
2023-05-16CA1010017_041_041-202305161030ND
2023-05-16CA1010017_056_056-202305161140ND
2023-05-16CA1010017_057_057-202305161135ND
2023-05-16CA1010017_058_058-202305161130ND
2023-05-16CA1010017_015_015-202305161245ND
2023-05-16CA1010017_043_043-202305161045ND
2023-05-16CA1010017_059_059-202305161210ND
2023-05-16CA1010017_062_062-202305161155ND
2023-05-18CA1010017_001_001-202305180815ND
2023-05-18CA1010017_004_004-202305180900ND
2023-05-18CA1010017_009_009-202305180945ND
2023-05-18CA1010017_006_006-202305181350ND
2023-05-18CA1010017_046_046-202305181410ND
2023-05-18CA1010017_005_005-2023051809100.830 ppm
2023-05-18CA1010017_011_011-202305181200ND
2023-05-18CA1010017_012_012-202305181215ND
2023-05-18CA1010017_066_066-202305180930ND
2023-09-01CA1010017_042_042-202309011300ND