Know Your Environment. Protect Your Health.

Nitrate

Triple R Mutual Water Company

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.

 

309

Samples

158

Samples exceeding legal limit (MCL)

301

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
201813.1 ppm28281.70 ppm - 16.9 ppm
201911.5 ppm42420.900 ppm - 18.0 ppm
202012.8 ppm2827ND - 18.7 ppm
202112.9 ppm28281.000 ppm - 17.8 ppm
202213.0 ppm35350.600 ppm - 18.5 ppm
20235.08 ppm148141ND - 20.2 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
2018-03-26CA5400670_001_001-20180326125012.9 ppm
2018-03-26CA5400670_008_008-20180326122015.0 ppm
2018-03-26CA5400670_004_004-20180326130013.9 ppm
2018-03-26CA5400670_006_006-20180326124010.7 ppm
2018-03-26CA5400670_009_009-20180326123010.9 ppm
2018-06-22CA5400670_002_002-2018062211453.40 ppm
2018-06-22CA5400670_001_001-20180622104013.2 ppm
2018-06-22CA5400670_005_005-2018062211306.10 ppm
2018-06-22CA5400670_007_007-20180622112014.3 ppm
2018-06-22CA5400670_004_004-20180622102515.7 ppm
2018-06-22CA5400670_006_006-20180622105513.4 ppm
2018-06-22CA5400670_008_008-20180622113015.4 ppm
2018-06-22CA5400670_009_009-20180622110515.8 ppm
2018-06-22CA5400670_011_011-2018062211501.70 ppm
2018-06-22CA5400670_010_010-20180622115513.1 ppm
2018-07-30CA5400670_010_010-20180730180014.7 ppm
2018-09-16CA5400670_006_006-20180916134616.8 ppm
2018-09-16CA5400670_009_009-20180916135216.9 ppm
2018-09-16CA5400670_007_007-20180916140814.1 ppm
2018-09-16CA5400670_001_001-20180916133214.0 ppm
2018-09-16CA5400670_004_004-20180916131415.9 ppm
2018-09-16CA5400670_008_008-20180916141115.4 ppm
2018-12-18CA5400670_004_004-20181218162512.9 ppm
2018-12-18CA5400670_008_008-20181218160515.5 ppm
2018-12-18CA5400670_007_007-20181218160014.2 ppm
2018-12-18CA5400670_001_001-20181218155014.3 ppm
2018-12-18CA5400670_006_006-20181218161811.5 ppm
2018-12-18CA5400670_009_009-20181218161215.2 ppm
2019-03-17CA5400670_010_010-2019031714152.40 ppm
2019-03-17CA5400670_002_002-2019031713542.90 ppm
2019-03-17CA5400670_006_006-20190317132514.8 ppm
2019-03-17CA5400670_001_001-20190317131014.0 ppm
2019-03-17CA5400670_008_008-20190317134015.1 ppm
2019-03-17CA5400670_011_011-2019031714000.900 ppm
2019-03-17CA5400670_004_004-20190317130011.5 ppm
2019-03-17CA5400670_005_005-2019031713453.00 ppm
2019-03-17CA5400670_007_007-20190317133514.1 ppm
2019-03-17CA5400670_009_009-20190317133015.8 ppm
2019-06-02CA5400670_001_001-20190602132813.3 ppm
2019-06-02CA5400670_002_002-2019060214153.80 ppm
2019-06-02CA5400670_004_004-20190602131010.1 ppm
2019-06-02CA5400670_007_007-20190602135513.9 ppm
2019-06-02CA5400670_008_008-20190602140414.7 ppm
2019-06-02CA5400670_006_006-20190602133613.9 ppm
2019-06-02CA5400670_009_009-20190602134617.2 ppm
2019-06-02CA5400670_010_010-20190602143013.8 ppm
2019-06-02CA5400670_011_011-2019060214241.30 ppm
2019-06-02CA5400670_005_005-2019060214123.70 ppm
2019-08-08CA5400670_001_001-20190808134613.0 ppm
2019-08-08CA5400670_009_009-20190808140917.8 ppm
2019-08-08CA5400670_004_004-20190808135315.7 ppm
2019-08-08CA5400670_006_006-20190808140314.6 ppm
2019-08-08CA5400670_008_008-20190808142414.4 ppm
2019-08-08CA5400670_007_007-20190808141713.8 ppm
2019-11-17CA5400670_001_001-20191117133013.3 ppm
2019-11-17CA5400670_006_006-20191117134113.5 ppm
2019-11-17CA5400670_007_007-20191117135413.9 ppm
2019-11-17CA5400670_008_008-20191117140414.6 ppm
2019-11-17CA5400670_004_004-20191117132016.0 ppm
2019-11-17CA5400670_009_009-20191117134818.0 ppm
2019-12-11CA5400670_001_001-20191211103513.0 ppm
2019-12-11CA5400670_008_008-20191211125513.6 ppm
2019-12-11CA5400670_010_010-20191211122514.6 ppm
2019-12-11CA5400670_011_011-2019121112102.00 ppm
2019-12-11CA5400670_002_002-2019121111553.10 ppm
2019-12-11CA5400670_004_004-20191211095514.1 ppm
2019-12-11CA5400670_007_007-20191211121013.3 ppm
2019-12-11CA5400670_005_005-2019121111402.30 ppm
2019-12-11CA5400670_009_009-20191211111516.4 ppm
2019-12-11CA5400670_006_006-20191211110012.9 ppm
2020-03-22CA5400670_009_009-20200322113017.0 ppm
2020-03-22CA5400670_011_011-202003221250ND
2020-03-22CA5400670_002_002-2020032212153.00 ppm
2020-03-22CA5400670_004_004-20200322104014.0 ppm
2020-03-22CA5400670_006_006-20200322111512.1 ppm
2020-03-22CA5400670_001_001-20200322110512.5 ppm
2020-03-22CA5400670_008_008-20200322115012.9 ppm
2020-03-22CA5400670_005_005-2020032212051.90 ppm
2020-03-22CA5400670_007_007-20200322114013.7 ppm
2020-03-22CA5400670_010_010-2020032213206.60 ppm
2020-06-01CA5400670_007_007-20200601092514.0 ppm
2020-06-01CA5400670_006_006-20200601090512.7 ppm
2020-06-01CA5400670_008_008-20200601092012.8 ppm
2020-06-01CA5400670_009_009-20200601091018.7 ppm
2020-06-01CA5400670_001_001-20200601084513.1 ppm
2020-06-01CA5400670_004_004-20200601094016.7 ppm
2020-09-02CA5400670_008_008-20200902112514.6 ppm
2020-09-02CA5400670_006_006-20200902111014.8 ppm
2020-09-02CA5400670_007_007-20200902112014.0 ppm
2020-09-02CA5400670_001_001-20200902105513.1 ppm
2020-09-02CA5400670_004_004-20200902104116.1 ppm
2020-09-27CA5400670_009_009-20200927153214.6 ppm
2020-11-30CA5400670_001_001-20201130102013.5 ppm
2020-11-30CA5400670_008_008-20201130104014.6 ppm
2020-11-30CA5400670_004_004-20201130101513.5 ppm
2020-11-30CA5400670_006_006-20201130110016.4 ppm
2020-11-30CA5400670_009_009-20201130104616.1 ppm
2020-11-30CA5400670_007_007-20201130103514.1 ppm
2021-03-15CA5400670_008_008-20210315132811.9 ppm
2021-03-15CA5400670_001_001-20210315130011.7 ppm
2021-03-15CA5400670_006_006-20210315130715.8 ppm
2021-03-15CA5400670_007_007-20210315132313.8 ppm
2021-03-15CA5400670_009_009-20210315131515.7 ppm
2021-03-15CA5400670_004_004-20210315134011.7 ppm
2021-03-31CA5400670_002_002-2021033111452.90 ppm
2021-03-31CA5400670_010_010-2021033112303.10 ppm
2021-03-31CA5400670_011_011-2021033112001.000 ppm
2021-03-31CA5400670_005_005-2021033111301.90 ppm
2021-06-21CA5400670_001_001-20210621095514.5 ppm
2021-06-21CA5400670_004_004-20210621094516.2 ppm
2021-06-21CA5400670_007_007-20210621101513.8 ppm
2021-06-21CA5400670_006_006-20210621100516.4 ppm
2021-06-21CA5400670_008_008-20210621101914.5 ppm
2021-06-21CA5400670_009_009-20210621101016.0 ppm
2021-09-09CA5400670_006_006-20210909103017.8 ppm
2021-09-09CA5400670_004_004-20210909101517.2 ppm
2021-09-09CA5400670_001_001-20210909102216.2 ppm
2021-09-09CA5400670_007_007-20210909104014.5 ppm
2021-09-09CA5400670_008_008-20210909104315.6 ppm
2021-09-09CA5400670_009_009-20210909103517.4 ppm
2021-11-15CA5400670_006_006-20211115101315.7 ppm
2021-11-15CA5400670_008_008-20211115103313.7 ppm
2021-11-15CA5400670_001_001-20211115100513.9 ppm
2021-11-15CA5400670_004_004-2021111509509.70 ppm
2021-11-15CA5400670_007_007-20211115102813.3 ppm
2021-11-15CA5400670_009_009-20211115102015.0 ppm
2022-02-28CA5400670_004_004-20220228093014.3 ppm
2022-02-28CA5400670_006_006-20220228095516.2 ppm
2022-02-28CA5400670_009_009-20220228100016.3 ppm
2022-02-28CA5400670_001_001-20220228094014.4 ppm
2022-02-28CA5400670_007_007-20220228101513.3 ppm
2022-02-28CA5400670_008_008-20220228102012.0 ppm
2022-03-27CA5400670_005_005-2022032716451.90 ppm
2022-03-27CA5400670_011_011-2022032714556.60 ppm
2022-03-27CA5400670_002_002-2022032716301.40 ppm
2022-03-27CA5400670_010_010-2022032717401.80 ppm
2022-05-24CA5400670_008_008-20220524115515.4 ppm
2022-05-24CA5400670_004_004-20220524112015.3 ppm
2022-05-24CA5400670_006_006-20220524113518.5 ppm
2022-05-24CA5400670_001_001-20220524112815.9 ppm
2022-05-24CA5400670_007_007-20220524115014.9 ppm
2022-05-24CA5400670_009_009-20220524114217.1 ppm
2022-09-08CA5400670_006_006-20220908111017.5 ppm
2022-09-08CA5400670_008_008-20220908112515.0 ppm
2022-09-08CA5400670_009_009-20220908111516.6 ppm
2022-09-08CA5400670_001_001-20220908110517.3 ppm
2022-09-08CA5400670_010_010-2022090811352.10 ppm
2022-09-08CA5400670_004_004-20220908110015.9 ppm
2022-09-27CA5400670_007_007-20220927110514.8 ppm
2022-12-07CA5400670_007_007-20221207125013.3 ppm
2022-12-07CA5400670_004_004-20221207122015.1 ppm
2022-12-07CA5400670_009_009-20221207124011.4 ppm
2022-12-07CA5400670_001_001-20221207122516.4 ppm
2022-12-07CA5400670_006_006-20221207123517.9 ppm
2022-12-07CA5400670_008_008-20221207125515.3 ppm
2022-12-28CA5400670_009_009-20221228121011.1 ppm
2022-12-28CA5400670_011_011-2022122811500.600 ppm
2022-12-28CA5400670_001_001-20221228100015.7 ppm
2022-12-28CA5400670_008_008-20221228110011.5 ppm
2022-12-28CA5400670_006_006-20221228103018.1 ppm
2022-12-28CA5400670_007_007-20221228111512.9 ppm
2023-01-03CA5400670_101_101-2023010311334.10 ppm
2023-02-01CA5400670_051_051-202302011107ND
2023-02-09CA5400670_111_111-2023020911101.50 ppm
2023-02-09CA5400670_144_144-2023020912151.30 ppm
2023-02-09CA5400670_073_073-2023020909403.10 ppm
2023-02-09CA5400670_083_083-2023020908551.70 ppm
2023-02-09CA5400670_097_097-2023020910152.40 ppm
2023-02-22CA5400670_071_071-2023022210301.10 ppm
2023-02-27CA5400670_001_001-20230227103515.9 ppm
2023-02-27CA5400670_008_008-20230227111014.7 ppm
2023-02-27CA5400670_004_004-20230227103014.2 ppm
2023-02-27CA5400670_007_007-20230227110013.8 ppm
2023-02-27CA5400670_009_009-2023022710559.10 ppm
2023-02-27CA5400670_006_006-20230227104516.2 ppm
2023-03-02CA5400670_032_032-2023030209301.50 ppm
2023-03-07CA5400670_146_146-2023030709302.80 ppm
2023-03-08CA5400670_153_153-2023030809000.600 ppm
2023-03-08CA5400670_102_102-2023030811501.60 ppm
2023-03-09CA5400670_116_116-2023030910301.80 ppm
2023-03-09CA5400670_047_047-2023030912302.80 ppm
2023-03-20CA5400670_150_150-202303200900ND
2023-03-21CA5400670_056_056-2023032111230.600 ppm
2023-03-23CA5400670_149_149-202303231300ND
2023-03-23CA5400670_138_138-2023032307009.00 ppm
2023-03-23CA5400670_149_149-2023032313001.70 ppm
2023-03-28CA5400670_138_138-2023032807007.30 ppm
2023-03-29CA5400670_084_084-2023032910305.40 ppm
2023-03-29CA5400670_118_118-2023032908000.900 ppm
2023-03-30CA5400670_011_011-2023033010000.800 ppm
2023-04-06CA5400670_016_016-2023040611081.60 ppm
2023-04-13CA5400670_065_065-2023041310203.20 ppm
2023-04-20CA5400670_155_155-2023042011003.70 ppm
2023-05-01CA5400670_118_118-2023050110300.900 ppm
2023-05-02CA5400670_117_117-2023050210300.700 ppm
2023-05-03CA5400670_157_157-2023050309000.500 ppm
2023-05-09CA5400670_089_089-2023050909103.50 ppm
2023-05-11CA5400670_132_132-2023051110303.90 ppm
2023-05-15CA5400670_001_001-20230515094020.2 ppm
2023-05-15CA5400670_010_010-20230515103016.5 ppm
2023-05-15CA5400670_007_007-20230515095514.9 ppm
2023-05-15CA5400670_009_009-2023051509508.70 ppm
2023-05-15CA5400670_011_011-2023051510151.58 ppm
2023-05-15CA5400670_005_005-2023051510052.70 ppm
2023-05-15CA5400670_008_008-20230515095815.7 ppm
2023-05-15CA5400670_002_002-2023051510105.80 ppm
2023-05-15CA5400670_004_004-20230515093015.6 ppm
2023-05-15CA5400670_006_006-20230515094518.0 ppm
2023-05-24CA5400670_101_101-2023052409464.70 ppm
2023-05-24CA5400670_018_018-2023052408304.90 ppm
2023-05-24CA5400670_017_017-2023052410303.20 ppm
2023-05-24CA5400670_126_126-2023052402452.60 ppm
2023-05-24CA5400670_087_087-2023052410004.00 ppm
2023-05-24CA5400670_098_098-2023052410003.00 ppm
2023-06-01CA5400670_054_054-2023060111101.000 ppm
2023-06-01CA5400670_114_114-2023060114051.60 ppm
2023-06-06CA5400670_147_147-2023060611502.00 ppm
2023-06-06CA5400670_026_026-202306060935ND
2023-06-06CA5400670_143_143-2023060610201.50 ppm
2023-06-06CA5400670_140_140-2023060612201.000 ppm
2023-06-07CA5400670_029_029-2023060716002.80 ppm
2023-06-08CA5400670_033_033-2023060812007.80 ppm
2023-06-15CA5400670_021_021-2023061509403.60 ppm
2023-06-22CA5400670_028_028-202306221219ND
2023-06-27CA5400670_081_081-2023062709002.90 ppm
2023-06-27CA5400670_145_145-2023062709423.70 ppm
2023-06-30CA5400670_005_005-2023063011302.40 ppm
2023-07-03CA5400670_074_074-2023070313454.10 ppm
2023-07-03CA5400670_142_142-2023070312003.40 ppm
2023-07-10CA5400670_045_045-2023071012004.10 ppm
2023-07-10CA5400670_036_036-202307100830ND
2023-07-13CA5400670_015_015-2023071309165.20 ppm
2023-07-13CA5400670_119_119-2023071311202.00 ppm
2023-07-13CA5400670_039_039-2023071309452.50 ppm
2023-07-13CA5400670_096_096-2023071310501.80 ppm
2023-07-27CA5400670_030_030-2023072708501.80 ppm
2023-07-27CA5400670_035_035-2023072710403.00 ppm
2023-08-01CA5400670_057_057-2023080108001.50 ppm
2023-08-07CA5400670_127_127-2023080713301.70 ppm
2023-08-07CA5400670_152_152-2023080711003.40 ppm
2023-08-07CA5400670_063_063-2023080714001.000 ppm
2023-08-09CA5400670_061_061-2023080910051.80 ppm
2023-08-09CA5400670_022_022-2023080909302.90 ppm
2023-08-14CA5400670_069_069-2023081410063.60 ppm
2023-08-14CA5400670_014_014-2023081409063.60 ppm
2023-08-14CA5400670_154_154-2023081410562.30 ppm
2023-08-15CA5400670_085_085-2023081509458.40 ppm
2023-08-15CA5400670_075_075-2023081509003.20 ppm
2023-08-15CA5400670_110_110-2023081510503.90 ppm
2023-08-15CA5400670_134_134-2023081510154.90 ppm
2023-08-15CA5400670_109_109-2023081511302.30 ppm
2023-08-16CA5400670_046_046-2023081611542.20 ppm
2023-08-16CA5400670_049_049-2023081608455.10 ppm
2023-08-16CA5400670_107_107-2023081609103.50 ppm
2023-08-16CA5400670_044_044-2023081611282.70 ppm
2023-08-16CA5400670_064_064-2023081611003.70 ppm
2023-08-16CA5400670_077_077-2023081610052.80 ppm
2023-08-21CA5400670_020_020-2023082110243.00 ppm
2023-08-21CA5400670_129_129-2023082111103.60 ppm
2023-08-22CA5400670_130_130-2023082209004.90 ppm
2023-08-22CA5400670_041_041-2023082211303.10 ppm
2023-08-22CA5400670_066_066-2023082211001.90 ppm
2023-08-22CA5400670_086_086-20230822084012.9 ppm
2023-09-05CA5400670_080_080-2023090510101.10 ppm
2023-09-05CA5400670_048_048-2023090510303.00 ppm
2023-09-06CA5400670_034_034-20230906073014.9 ppm
2023-09-06CA5400670_086_086-2023090608452.50 ppm
2023-09-13CA5400670_156_156-202309131201ND
2023-09-20CA5400670_128_128-2023092012102.50 ppm
2023-09-26CA5400670_042_042-2023092610003.00 ppm
2023-09-26CA5400670_105_105-2023092609203.00 ppm
2023-09-27CA5400670_009_009-20230927113515.8 ppm
2023-09-27CA5400670_001_001-20230927112518.4 ppm
2023-09-27CA5400670_004_004-20230927112016.8 ppm
2023-09-27CA5400670_007_007-20230927114015.4 ppm
2023-09-27CA5400670_006_006-20230927113017.9 ppm
2023-09-27CA5400670_008_008-20230927114515.5 ppm
2023-09-27CA5400670_053_053-2023092711250.700 ppm
2023-10-18CA5400670_092_092-2023101810454.70 ppm
2023-10-18CA5400670_078_078-2023101810101.80 ppm
2023-10-18CA5400670_050_050-2023101809203.00 ppm
2023-10-23CA5400670_148_148-2023102312201.40 ppm
2023-10-23CA5400670_019_019-2023102314302.40 ppm
2023-10-23CA5400670_070_070-2023102311303.20 ppm
2023-10-23CA5400670_037_037-2023102310457.70 ppm
2023-11-01CA5400670_121_121-2023110110002.40 ppm
2023-11-06CA5400670_079_079-2023110608004.80 ppm
2023-11-06CA5400670_115_115-2023110607501.70 ppm
2023-11-06CA5400670_093_093-2023110606122.80 ppm
2023-11-13CA5400670_009_009-20231113100015.6 ppm
2023-11-13CA5400670_006_006-20231113092516.9 ppm
2023-11-13CA5400670_007_007-20231113100514.1 ppm
2023-11-13CA5400670_001_001-20231113091017.1 ppm
2023-11-13CA5400670_004_004-20231113091516.7 ppm
2023-11-13CA5400670_008_008-20231113101015.2 ppm
2023-11-13CA5400670_058_058-2023111310452.50 ppm
2023-11-15CA5400670_055_055-2023111511154.10 ppm
2023-11-20CA5400670_118_118-2023112008301.40 ppm
2023-11-20CA5400670_123_123-2023112008003.90 ppm
2023-11-22CA5400670_038_038-2023112211231.70 ppm
2023-11-22CA5400670_082_082-2023112211002.60 ppm
2023-11-27CA5400670_108_108-2023112709008.20 ppm
2023-11-27CA5400670_025_025-2023112709452.40 ppm
2023-11-27CA5400670_091_091-2023112710053.00 ppm
2023-11-27CA5400670_013_013-2023112710283.20 ppm
2023-11-27CA5400670_027_027-2023112708102.30 ppm
2023-11-27CA5400670_135_135-2023112710301.80 ppm
2023-11-29CA5400670_131_131-2023112910002.50 ppm
2023-11-29CA5400670_124_124-2023112908302.40 ppm