Know Your Environment. Protect Your Health.

Nitrate

Foothill Apartments

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.

 

191

Samples

47

Samples exceeding legal limit (MCL)

179

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20189.70 ppm11114.30 ppm - 24.2 ppm
20197.94 ppm17174.00 ppm - 15.8 ppm
20209.30 ppm18182.50 ppm - 18.8 ppm
20218.99 ppm16162.70 ppm - 18.9 ppm
20225.27 ppm6564ND - 16.0 ppm
20235.25 ppm6453ND - 16.1 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
2018-01-02CA5400769_001_001-20180102100024.2 ppm
2018-01-02CA5400769_002_002-2018010210005.40 ppm
2018-04-03CA5400769_001_001-20180403083515.5 ppm
2018-04-03CA5400769_002_002-2018040308354.30 ppm
2018-07-02CA5400769_001_001-20180702071515.1 ppm
2018-07-02CA5400769_002_002-2018070207156.10 ppm
2018-08-20CA5400769_001_001-2018082007455.80 ppm
2018-10-01CA5400769_001_001-20181001074515.6 ppm
2018-10-01CA5400769_002_002-2018100107455.10 ppm
2018-11-26CA5400769_002_002-2018112609314.90 ppm
2018-12-03CA5400769_002_002-2018120308504.70 ppm
2019-01-07CA5400769_001_001-20190107080015.8 ppm
2019-01-07CA5400769_002_002-2019010708005.50 ppm
2019-02-04CA5400769_002_002-2019020408304.80 ppm
2019-03-07CA5400769_002_002-2019030707005.00 ppm
2019-04-01CA5400769_001_001-20190401082015.5 ppm
2019-04-01CA5400769_002_002-2019040108205.00 ppm
2019-05-02CA5400769_002_002-2019050207254.00 ppm
2019-06-03CA5400769_002_002-2019060308506.20 ppm
2019-07-08CA5400769_001_001-20190708070015.4 ppm
2019-07-08CA5400769_002_002-2019070807005.50 ppm
2019-08-05CA5400769_002_002-2019080507204.90 ppm
2019-09-03CA5400769_002_002-2019090308455.20 ppm
2019-10-03CA5400769_001_001-20191003073515.5 ppm
2019-10-03CA5400769_002_002-2019100307354.30 ppm
2019-11-04CA5400769_002_002-20191104063011.3 ppm
2019-11-13CA5400769_002_002-2019111307155.50 ppm
2019-12-04CA5400769_002_002-2019120408005.60 ppm
2020-01-06CA5400769_001_001-20200106075015.2 ppm
2020-01-06CA5400769_002_002-2020010607506.80 ppm
2020-02-03CA5400769_002_002-2020020307108.50 ppm
2020-03-05CA5400769_002_002-2020030507305.70 ppm
2020-04-01CA5400769_001_001-20200401072015.3 ppm
2020-04-07CA5400769_002_002-2020040707402.50 ppm
2020-05-04CA5400769_002_002-2020050408205.70 ppm
2020-06-01CA5400769_002_002-2020060106405.60 ppm
2020-07-01CA5400769_001_001-20200701070018.8 ppm
2020-07-01CA5400769_002_002-2020070107006.10 ppm
2020-08-03CA5400769_002_002-2020080307305.50 ppm
2020-09-01CA5400769_002_002-2020090107305.70 ppm
2020-10-05CA5400769_001_001-20201005071516.6 ppm
2020-10-05CA5400769_002_002-2020100507155.90 ppm
2020-11-12CA5400769_001_001-20201112070018.0 ppm
2020-11-12CA5400769_002_002-2020111207005.30 ppm
2020-12-14CA5400769_002_002-20201214071515.2 ppm
2020-12-21CA5400769_002_002-2020122109305.00 ppm
2021-01-12CA5400769_002_002-2021011208005.10 ppm
2021-01-12CA5400769_001_001-20210112080017.2 ppm
2021-02-01CA5400769_002_002-2021020107405.50 ppm
2021-03-01CA5400769_002_002-20210301070017.3 ppm
2021-03-04CA5400769_002_002-2021030407105.10 ppm
2021-04-05CA5400769_002_002-2021040507356.60 ppm
2021-04-05CA5400769_001_001-20210405073517.3 ppm
2021-05-10CA5400769_002_002-2021051008005.60 ppm
2021-06-01CA5400769_002_002-2021060106303.40 ppm
2021-07-01CA5400769_001_001-20210701072018.9 ppm
2021-07-01CA5400769_002_002-2021070107208.60 ppm
2021-08-02CA5400769_002_002-2021080206555.70 ppm
2021-09-01CA5400769_002_002-2021090106304.70 ppm
2021-10-04CA5400769_001_001-20211004074515.2 ppm
2021-10-04CA5400769_002_002-2021100407452.70 ppm
2021-12-01CA5400769_002_002-2021120108155.00 ppm
2022-01-05CA5400769_001_001-20220105104014.9 ppm
2022-01-05CA5400769_002_002-2022010510402.30 ppm
2022-01-11CA5400769_002_002-2022011107202.70 ppm
2022-01-18CA5400769_002_002-2022011808005.00 ppm
2022-01-26CA5400769_002_002-2022012607102.40 ppm
2022-02-01CA5400769_001_001-20220201100514.9 ppm
2022-02-01CA5400769_002_002-2022020110052.20 ppm
2022-02-09CA5400769_002_002-2022020911402.50 ppm
2022-02-15CA5400769_002_002-2022021511402.10 ppm
2022-02-22CA5400769_002_002-2022022216003.10 ppm
2022-03-02CA5400769_002_002-2022030220205.20 ppm
2022-03-02CA5400769_001_001-20220302201514.5 ppm
2022-03-07CA5400769_002_002-2022030720003.50 ppm
2022-03-16CA5400769_002_002-2022031620002.10 ppm
2022-03-22CA5400769_002_002-2022032219303.30 ppm
2022-03-29CA5400769_002_002-2022032918301.90 ppm
2022-04-04CA5400769_001_001-20220404193515.6 ppm
2022-04-04CA5400769_002_002-2022040419453.50 ppm
2022-04-11CA5400769_002_002-2022041120003.40 ppm
2022-04-19CA5400769_002_002-2022041911455.20 ppm
2022-04-27CA5400769_002_002-202204271730ND
2022-05-03CA5400769_002_002-2022050312002.50 ppm
2022-05-09CA5400769_002_002-2022050920002.30 ppm
2022-05-18CA5400769_002_002-2022051820002.00 ppm
2022-05-24CA5400769_001_001-20220524072015.4 ppm
2022-05-24CA5400769_002_002-2022052407152.60 ppm
2022-05-31CA5400769_002_002-2022053120152.00 ppm
2022-06-06CA5400769_002_002-2022060606453.00 ppm
2022-06-14CA5400769_002_002-2022061420152.00 ppm
2022-06-22CA5400769_002_002-2022062220001.80 ppm
2022-06-28CA5400769_002_002-2022062820002.60 ppm
2022-07-07CA5400769_002_002-2022070707452.50 ppm
2022-07-14CA5400769_002_002-2022071407303.80 ppm
2022-07-18CA5400769_001_001-20220718202015.6 ppm
2022-07-18CA5400769_002_002-2022071820303.00 ppm
2022-07-28CA5400769_002_002-2022072820001.10 ppm
2022-08-04CA5400769_002_002-2022080408003.40 ppm
2022-08-10CA5400769_002_002-2022081019001.70 ppm
2022-08-17CA5400769_002_002-2022081719403.00 ppm
2022-08-17CA5400769_001_001-20220817193016.0 ppm
2022-08-22CA5400769_002_002-2022082218003.00 ppm
2022-08-28CA5400769_001_001-20220828091515.1 ppm
2022-08-30CA5400769_002_002-2022083020302.00 ppm
2022-09-05CA5400769_002_002-2022090519002.20 ppm
2022-09-14CA5400769_002_002-2022091420002.90 ppm
2022-09-23CA5400769_002_002-2022092307304.80 ppm
2022-09-26CA5400769_002_002-2022092619002.30 ppm
2022-09-26CA5400769_001_001-2022092619107.70 ppm
2022-10-06CA5400769_002_002-2022100620005.40 ppm
2022-10-10CA5400769_002_002-2022101007155.00 ppm
2022-10-11CA5400769_001_001-20221011203014.7 ppm
2022-10-20CA5400769_002_002-2022102020002.00 ppm
2022-10-20CA5400769_001_001-20221020201015.6 ppm
2022-10-26CA5400769_002_002-2022102612003.60 ppm
2022-11-03CA5400769_001_001-20221103194015.9 ppm
2022-11-03CA5400769_002_002-2022110319303.10 ppm
2022-11-07CA5400769_002_002-2022110720001.90 ppm
2022-11-17CA5400769_002_002-2022111720004.80 ppm
2022-11-21CA5400769_002_002-2022112120004.30 ppm
2022-11-27CA5400769_002_002-2022112714302.80 ppm
2022-12-05CA5400769_002_002-2022120520302.50 ppm
2022-12-08CA5400769_001_001-20221208141515.7 ppm
2022-12-13CA5400769_002_002-2022121318001.90 ppm
2022-12-19CA5400769_002_002-2022121920002.10 ppm
2022-12-28CA5400769_002_002-2022122816304.50 ppm
2023-01-04CA5400769_001_001-20230104201016.1 ppm
2023-01-04CA5400769_002_002-2023010420005.70 ppm
2023-01-11CA5400769_002_002-2023011115504.90 ppm
2023-01-19CA5400769_002_002-2023011916302.60 ppm
2023-01-25CA5400769_002_002-2023012521001.50 ppm
2023-01-30CA5400769_002_002-2023013014452.40 ppm
2023-02-08CA5400769_002_002-2023020814404.30 ppm
2023-02-08CA5400769_001_001-20230208144515.8 ppm
2023-02-16CA5400769_002_002-202302161100ND
2023-02-22CA5400769_002_002-202302221030ND
2023-03-01CA5400769_002_002-2023030112105.60 ppm
2023-03-08CA5400769_002_002-20230308102010.8 ppm
2023-03-12CA5400769_002_002-2023031220003.90 ppm
2023-03-16CA5400769_002_002-2023031609302.00 ppm
2023-03-23CA5400769_002_002-20230323093014.7 ppm
2023-03-24CA5400769_002_002-20230324113015.2 ppm
2023-03-27CA5400769_002_002-2023032717452.50 ppm
2023-03-27CA5400769_001_001-20230327180015.7 ppm
2023-04-02CA5400769_002_002-2023040219303.00 ppm
2023-04-13CA5400769_002_002-2023041319003.20 ppm
2023-04-13CA5400769_001_001-20230413191015.8 ppm
2023-04-19CA5400769_002_002-202304191630ND
2023-04-27CA5400769_002_002-2023042718452.90 ppm
2023-05-03CA5400769_001_001-20230503193015.7 ppm
2023-05-03CA5400769_002_002-2023050319352.00 ppm
2023-05-10CA5400769_002_002-2023051017002.90 ppm
2023-05-24CA5400769_002_002-2023052419302.80 ppm
2023-05-31CA5400769_002_002-2023053119303.10 ppm
2023-06-09CA5400769_002_002-2023060909402.40 ppm
2023-06-09CA5400769_001_001-20230609093013.9 ppm
2023-06-14CA5400769_002_002-2023061416002.10 ppm
2023-06-22CA5400769_002_002-2023062217002.90 ppm
2023-06-26CA5400769_002_002-2023062619302.70 ppm
2023-07-05CA5400769_002_002-202307051700ND
2023-07-10CA5400769_001_001-20230710170015.2 ppm
2023-07-10CA5400769_002_002-202307101710ND
2023-07-19CA5400769_002_002-2023071917003.50 ppm
2023-07-24CA5400769_002_002-202307241815ND
2023-08-01CA5400769_002_002-202308010730ND
2023-08-07CA5400769_002_002-2023080712352.10 ppm
2023-08-07CA5400769_001_001-20230807124015.4 ppm
2023-08-15CA5400769_002_002-2023081516002.60 ppm
2023-08-22CA5400769_002_002-202308221715ND
2023-08-29CA5400769_002_002-2023082918003.70 ppm
2023-09-05CA5400769_002_002-2023090519304.40 ppm
2023-09-10CA5400769_001_001-20230910180014.6 ppm
2023-09-10CA5400769_002_002-202309101750ND
2023-09-17CA5400769_002_002-2023091719302.10 ppm
2023-09-26CA5400769_002_002-202309261915ND
2023-10-01CA5400769_002_002-2023100106153.00 ppm
2023-10-10CA5400769_001_001-20231010064015.3 ppm
2023-10-10CA5400769_002_002-2023101006353.10 ppm
2023-10-15CA5400769_002_002-2023101516302.10 ppm
2023-10-22CA5400769_002_002-2023102217153.60 ppm
2023-10-31CA5400769_002_002-2023103115004.00 ppm
2023-11-05CA5400769_001_001-20231105080015.1 ppm
2023-11-05CA5400769_002_002-2023110507553.20 ppm
2023-11-14CA5400769_002_002-2023111412003.00 ppm
2023-11-21CA5400769_002_002-2023112110001.90 ppm
2023-11-28CA5400769_002_002-2023112809001.60 ppm
2023-12-04CA5400769_001_001-20231204063014.1 ppm
2023-12-14CA5400769_002_002-2023121409301.60 ppm
2023-12-18CA5400769_002_002-202312180915ND
2023-12-28CA5400769_002_002-2023122807302.00 ppm