Know Your Environment. Protect Your Health.

Nitrate

Coast Springs - Cal. Water Service (puc)

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.

 

172

Samples

0

Samples exceeding legal limit (MCL)

108

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.84 ppm2817ND - 4.80 ppm
20191.42 ppm2821ND - 3.39 ppm
20202.28 ppm2921ND - 6.11 ppm
20211.21 ppm2816ND - 4.80 ppm
20220.629 ppm3020ND - 2.80 ppm
20230.362 ppm2913ND - 2.80 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
2018-01-24CA2110007_010_010-2018012411054.27 ppm
2018-01-24CA2110007_001_001-2018012411553.31 ppm
2018-01-24CA2110007_005_005-201801241135ND
2018-02-06CA2110007_001_001-2018020612353.38 ppm
2018-03-14CA2110007_001_001-2018031411203.99 ppm
2018-04-17CA2110007_001_001-2018041711453.13 ppm
2018-04-17CA2110007_005_005-201804171035ND
2018-04-17CA2110007_010_010-2018041710553.17 ppm
2018-05-16CA2110007_001_001-2018051612302.64 ppm
2018-06-26CA2110007_001_001-2018062612302.40 ppm
2018-07-16CA2110007_006_006-201807161125ND
2018-07-16CA2110007_008_008-201807161220ND
2018-07-16CA2110007_007_007-201807161155ND
2018-07-17CA2110007_001_001-2018071711153.63 ppm
2018-07-17CA2110007_005_005-2018071710402.59 ppm
2018-07-23CA2110007_003_003-201807231150ND
2018-07-23CA2110007_004_004-201807231210ND
2018-07-26CA2110007_005_005-2018072611404.80 ppm
2018-07-26CA2110007_016_016-201807261155ND
2018-08-06CA2110007_002_002-201808061045ND
2018-08-06CA2110007_010_010-201808061105ND
2018-08-20CA2110007_001_001-2018082011003.10 ppm
2018-09-12CA2110007_001_001-2018091213402.25 ppm
2018-10-15CA2110007_001_001-2018101512501.95 ppm
2018-10-15CA2110007_005_005-2018101512302.44 ppm
2018-10-15CA2110007_010_010-201810151135ND
2018-11-26CA2110007_001_001-2018112611151.98 ppm
2018-12-17CA2110007_001_001-2018121712052.37 ppm
2019-01-28CA2110007_001_001-2019012812452.07 ppm
2019-01-28CA2110007_010_010-201901281140ND
2019-01-28CA2110007_005_005-201901281200ND
2019-02-19CA2110007_001_001-2019021912151.69 ppm
2019-03-25CA2110007_001_001-2019032512251.65 ppm
2019-04-22CA2110007_010_010-2019042212051.90 ppm
2019-04-22CA2110007_001_001-2019042211302.10 ppm
2019-04-22CA2110007_005_005-2019042213051.000 ppm
2019-05-29CA2110007_001_001-2019052911002.07 ppm
2019-06-12CA2110007_001_001-2019061212451.50 ppm
2019-06-17CA2110007_002_002-2019061710450.450 ppm
2019-06-17CA2110007_003_003-201906171100ND
2019-07-08CA2110007_005_005-2019070813352.83 ppm
2019-07-08CA2110007_005_005-2019070813402.70 ppm
2019-07-08CA2110007_001_001-2019070813002.09 ppm
2019-08-01CA2110007_010_010-201908011040ND
2019-08-12CA2110007_016_016-2019081210250.760 ppm
2019-08-28CA2110007_001_001-2019082812103.39 ppm
2019-09-23CA2110007_001_001-2019092311203.02 ppm
2019-10-07CA2110007_007_007-201910071000ND
2019-10-07CA2110007_004_004-201910071105ND
2019-10-07CA2110007_008_008-201910071020ND
2019-10-07CA2110007_006_006-2019100710350.660 ppm
2019-10-23CA2110007_001_001-2019102311503.10 ppm
2019-10-23CA2110007_010_010-2019102310350.800 ppm
2019-10-23CA2110007_005_005-2019102311150.200 ppm
2019-11-13CA2110007_001_001-2019111310503.37 ppm
2019-12-19CA2110007_001_001-2019121911302.41 ppm
2020-01-29CA2110007_005_005-2020012909552.10 ppm
2020-01-29CA2110007_001_001-2020012911202.05 ppm
2020-02-10CA2110007_001_001-2020021011071.80 ppm
2020-03-24CA2110007_001_001-2020032411252.20 ppm
2020-04-14CA2110007_001_001-2020041411452.02 ppm
2020-04-14CA2110007_005_005-2020041410400.757 ppm
2020-04-14CA2110007_010_010-202004141000ND
2020-05-13CA2110007_001_001-2020051310153.37 ppm
2020-06-15CA2110007_005_005-2020061510403.50 ppm
2020-06-15CA2110007_007_007-202006151000ND
2020-06-15CA2110007_008_008-202006150945ND
2020-06-15CA2110007_001_001-2020061511203.90 ppm
2020-06-15CA2110007_001_001-2020061511354.37 ppm
2020-06-18CA2110007_016_016-2020061810004.10 ppm
2020-06-24CA2110007_003_003-2020062411400.480 ppm
2020-06-24CA2110007_002_002-202006241245ND
2020-06-24CA2110007_004_004-202006241200ND
2020-07-14CA2110007_010_010-202007141050ND
2020-07-21CA2110007_001_001-2020072112053.19 ppm
2020-07-21CA2110007_005_005-2020072111056.11 ppm
2020-08-11CA2110007_001_001-2020081112103.10 ppm
2020-09-23CA2110007_001_001-2020092311173.60 ppm
2020-10-05CA2110007_006_006-202010050730ND
2020-10-21CA2110007_001_001-2020102110303.50 ppm
2020-10-21CA2110007_005_005-2020102112155.20 ppm
2020-10-21CA2110007_010_010-202010211135ND
2020-11-17CA2110007_015_015-2020111708103.40 ppm
2020-11-30CA2110007_001_001-2020113009203.60 ppm
2020-12-15CA2110007_001_001-2020121511403.70 ppm
2021-01-20CA2110007_001_001-2021012010002.10 ppm
2021-01-27CA2110007_010_010-2021012709300.570 ppm
2021-01-27CA2110007_005_005-2021012710004.80 ppm
2021-02-10CA2110007_001_001-2021021011252.00 ppm
2021-03-09CA2110007_001_001-2021030910001.60 ppm
2021-04-07CA2110007_001_001-2021040710401.20 ppm
2021-04-12CA2110007_005_005-202104121035ND
2021-04-12CA2110007_010_010-202104121055ND
2021-05-18CA2110007_001_001-2021051810001.20 ppm
2021-06-14CA2110007_006_006-202106141225ND
2021-06-14CA2110007_001_001-2021061411101.20 ppm
2021-06-14CA2110007_002_002-202106141155ND
2021-06-14CA2110007_004_004-202106141210ND
2021-06-22CA2110007_016_016-2021062211002.00 ppm
2021-06-22CA2110007_008_008-202106221010ND
2021-06-22CA2110007_005_005-202106221035ND
2021-07-01CA2110007_007_007-202107011155ND
2021-07-06CA2110007_003_003-202107060950ND
2021-07-06CA2110007_010_010-202107060900ND
2021-07-12CA2110007_001_001-2021071209301.50 ppm
2021-07-12CA2110007_005_005-202107120950ND
2021-08-10CA2110007_001_001-2021081009452.30 ppm
2021-09-20CA2110007_001_001-2021092010303.70 ppm
2021-10-19CA2110007_005_005-2021101911001.80 ppm
2021-10-19CA2110007_010_010-202110191130ND
2021-10-19CA2110007_001_001-2021101910304.30 ppm
2021-11-08CA2110007_001_001-2021110810152.30 ppm
2021-12-14CA2110007_001_001-2021121412301.20 ppm
2022-01-18CA2110007_005_005-2022011810151.20 ppm
2022-01-18CA2110007_010_010-2022011812000.870 ppm
2022-01-18CA2110007_001_001-2022011811151.000 ppm
2022-02-09CA2110007_001_001-2022020910501.000 ppm
2022-03-08CA2110007_001_001-2022030810250.800 ppm
2022-04-05CA2110007_001_001-2022040510200.600 ppm
2022-04-18CA2110007_005_005-202204181155ND
2022-04-18CA2110007_010_010-2022041812202.80 ppm
2022-05-02CA2110007_001_001-2022050210200.600 ppm
2022-06-08CA2110007_001_001-2022060810300.700 ppm
2022-06-13CA2110007_001_001-2022061311500.590 ppm
2022-06-14CA2110007_002_002-202206141145ND
2022-06-14CA2110007_007_007-202206141050ND
2022-06-14CA2110007_006_006-202206141010ND
2022-06-14CA2110007_016_016-2022061412250.660 ppm
2022-06-14CA2110007_005_005-2022061412150.360 ppm
2022-06-28CA2110007_008_008-202206281130ND
2022-07-11CA2110007_001_001-2022071110050.900 ppm
2022-08-08CA2110007_010_010-202208081245ND
2022-08-08CA2110007_001_001-2022080811200.880 ppm
2022-08-08CA2110007_005_005-2022080813001.10 ppm
2022-08-16CA2110007_003_003-202208161230ND
2022-08-16CA2110007_010_010-202208161215ND
2022-08-16CA2110007_004_004-202208161235ND
2022-09-12CA2110007_001_001-2022091210300.990 ppm
2022-10-12CA2110007_010_010-202210121045ND
2022-10-12CA2110007_001_001-2022101209400.940 ppm
2022-10-12CA2110007_005_005-2022101211301.20 ppm
2022-11-16CA2110007_001_001-2022111610450.900 ppm
2022-12-14CA2110007_001_001-2022121410150.780 ppm
2023-01-24CA2110007_005_005-2023012411150.290 ppm
2023-01-24CA2110007_001_001-2023012410301.40 ppm
2023-01-24CA2110007_010_010-202301241230ND
2023-02-14CA2110007_001_001-2023021411300.440 ppm
2023-03-28CA2110007_001_001-202303281030ND
2023-04-25CA2110007_005_005-202304251140ND
2023-04-25CA2110007_010_010-202304251125ND
2023-04-25CA2110007_001_001-202304251020ND
2023-05-16CA2110007_001_001-202305161005ND
2023-06-06CA2110007_001_001-202306061140ND
2023-06-12CA2110007_001_001-2023061211300.250 ppm
2023-06-19CA2110007_005_005-202306190930ND
2023-06-19CA2110007_016_016-2023061910000.660 ppm
2023-06-21CA2110007_007_007-202306210930ND
2023-06-21CA2110007_006_006-202306210900ND
2023-06-22CA2110007_008_008-202306221130ND
2023-06-27CA2110007_004_004-202306270930ND
2023-06-28CA2110007_002_002-202306280945ND
2023-07-18CA2110007_010_010-202307181140ND
2023-07-26CA2110007_001_001-2023072611350.400 ppm
2023-07-26CA2110007_010_010-2023072613002.80 ppm
2023-07-26CA2110007_005_005-202307261325ND
2023-08-24CA2110007_001_001-2023082411000.530 ppm
2023-09-25CA2110007_001_001-2023092510050.650 ppm
2023-10-30CA2110007_001_001-2023103012350.800 ppm
2023-10-30CA2110007_005_005-2023103013050.600 ppm
2023-10-30CA2110007_010_010-202310301330ND
2023-11-13CA2110007_001_001-2023111310200.710 ppm
2023-12-26CA2110007_001_001-2023122609550.980 ppm