Know Your Environment. Protect Your Health.

Nitrate and nitrite

Coast Springs - Cal. Water Service (puc)

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.

 

56

Samples

0

Samples exceeding legal limit (MCL)

17

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20180.720 ppm102ND - 4.80 ppm
20190.607 ppm105ND - 2.70 ppm
20201.20 ppm104ND - 4.10 ppm
20210.320 ppm102ND - 2.00 ppm
20220.230 ppm73ND - 0.660 ppm
20230.0733 ppm91ND - 0.660 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
2018-06-26CA2110007_001_001-2018062612302.40 ppm
2018-07-16CA2110007_006_006-201807161125ND
2018-07-16CA2110007_007_007-201807161155ND
2018-07-16CA2110007_008_008-201807161220ND
2018-07-23CA2110007_003_003-201807231150ND
2018-07-23CA2110007_004_004-201807231210ND
2018-07-26CA2110007_016_016-201807261155ND
2018-07-26CA2110007_005_005-2018072611404.80 ppm
2018-08-06CA2110007_002_002-201808061045ND
2018-08-06CA2110007_010_010-201808061105ND
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_005-2019070813402.70 ppm
2019-08-01CA2110007_010_010-201908011040ND
2019-08-12CA2110007_016_016-2019081210250.760 ppm
2019-10-07CA2110007_007_007-201910071000ND
2019-10-07CA2110007_008_008-201910071020ND
2019-10-07CA2110007_004_004-201910071105ND
2019-10-07CA2110007_006_006-2019100710350.660 ppm
2020-06-15CA2110007_007_007-202006151000ND
2020-06-15CA2110007_001_001-2020061511203.90 ppm
2020-06-15CA2110007_005_005-2020061510403.50 ppm
2020-06-15CA2110007_008_008-202006150945ND
2020-06-18CA2110007_016_016-2020061810004.10 ppm
2020-06-24CA2110007_002_002-202006241245ND
2020-06-24CA2110007_003_003-2020062411400.480 ppm
2020-06-24CA2110007_004_004-202006241200ND
2020-07-14CA2110007_010_010-202007141050ND
2020-10-05CA2110007_006_006-202010050730ND
2021-06-14CA2110007_001_001-2021061411101.20 ppm
2021-06-14CA2110007_002_002-202106141155ND
2021-06-14CA2110007_004_004-202106141210ND
2021-06-14CA2110007_006_006-202106141225ND
2021-06-22CA2110007_008_008-202106221010ND
2021-06-22CA2110007_016_016-2021062211002.00 ppm
2021-06-22CA2110007_005_005-202106221035ND
2021-07-01CA2110007_007_007-202107011155ND
2021-07-06CA2110007_003_003-202107060950ND
2021-07-06CA2110007_010_010-202107060900ND
2022-06-13CA2110007_001_001-2022061311500.590 ppm
2022-06-14CA2110007_007_007-202206141050ND
2022-06-14CA2110007_002_002-202206141145ND
2022-06-14CA2110007_016_016-2022061412250.660 ppm
2022-06-14CA2110007_006_006-202206141010ND
2022-06-14CA2110007_005_005-2022061412150.360 ppm
2022-06-28CA2110007_008_008-202206281130ND
2023-06-06CA2110007_001_001-202306061140ND
2023-06-19CA2110007_016_016-2023061910000.660 ppm
2023-06-19CA2110007_005_005-202306190930ND
2023-06-21CA2110007_006_006-202306210900ND
2023-06-21CA2110007_007_007-202306210930ND
2023-06-22CA2110007_008_008-202306221130ND
2023-06-27CA2110007_004_004-202306270930ND
2023-06-28CA2110007_002_002-202306280945ND
2023-07-18CA2110007_010_010-202307181140ND