Know Your Environment. Protect Your Health.

Nitrate

Woodlake, City Of

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.

 

74

Samples

4

Samples exceeding legal limit (MCL)

58

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20182.75 ppm1713ND - 8.50 ppm
20193.24 ppm108ND - 7.20 ppm
20201.94 ppm106ND - 7.20 ppm
20213.14 ppm129ND - 8.20 ppm
20225.77 ppm1210ND - 12.0 ppm
20233.78 ppm1312ND - 11.0 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
2018-02-27CA5410020_008_008-2018022714487.60 ppm
2018-02-27CA5410020_010_010-2018022714180.610 ppm
2018-02-27CA5410020_006_006-2018022714552.50 ppm
2018-02-27CA5410020_009_009-2018022714300.520 ppm
2018-06-12CA5410020_008_008-2018061212087.50 ppm
2018-06-12CA5410020_009_009-2018061211550.730 ppm
2018-06-12CA5410020_006_006-2018061211301.90 ppm
2018-06-12CA5410020_010_010-201806121140ND
2018-09-20CA5410020_005_005-201809201240ND
2018-09-20CA5410020_004_004-201809201250ND
2018-09-20CA5410020_007_007-2018092012302.00 ppm
2018-09-20CA5410020_010_010-201809201140ND
2018-09-20CA5410020_009_009-2018092011540.820 ppm
2018-09-20CA5410020_008_008-2018092012108.50 ppm
2018-09-20CA5410020_006_006-2018092012203.40 ppm
2018-12-28CA5410020_008_008-2018122812107.60 ppm
2018-12-28CA5410020_006_006-2018122813303.10 ppm
2019-02-28CA5410020_008_008-2019022813456.70 ppm
2019-02-28CA5410020_006_006-2019022814022.50 ppm
2019-05-07CA5410020_008_008-2019050713007.20 ppm
2019-08-22CA5410020_009_009-2019082213310.980 ppm
2019-08-22CA5410020_008_008-2019082214106.30 ppm
2019-08-22CA5410020_010_010-201908221315ND
2019-08-22CA5410020_007_007-2019082213540.800 ppm
2019-08-22CA5410020_004_004-201908221403ND
2019-08-22CA5410020_006_006-2019082213462.10 ppm
2019-11-27CA5410020_008_008-2019112710255.80 ppm
2020-08-24CA5410020_005_005-202008241310ND
2020-09-15CA5410020_009_009-2020091511381.40 ppm
2020-09-15CA5410020_006_006-2020091512022.00 ppm
2020-09-15CA5410020_005_005-202009151220ND
2020-09-15CA5410020_010_010-2020091511440.440 ppm
2020-09-15CA5410020_008_008-2020091511257.20 ppm
2020-11-19CA5410020_008_008-2020111912586.80 ppm
2020-11-19CA5410020_010_010-202011191140ND
2020-12-08CA5410020_004_004-202012081250ND
2020-12-08CA5410020_007_007-2020120813051.60 ppm
2021-02-22CA5410020_008_008-2021022211405.60 ppm
2021-02-22CA5410020_007_007-2021022211182.20 ppm
2021-02-22CA5410020_004_004-202102221134ND
2021-05-21CA5410020_008_008-2021052113086.70 ppm
2021-08-31CA5410020_005_005-202108311010ND
2021-08-31CA5410020_009_009-2021083111191.20 ppm
2021-08-31CA5410020_008_008-2021083111098.20 ppm
2021-08-31CA5410020_006_006-2021083110452.70 ppm
2021-08-31CA5410020_004_004-202108311030ND
2021-08-31CA5410020_007_007-2021083110552.10 ppm
2021-08-31CA5410020_010_010-2021083111281.30 ppm
2021-10-26CA5410020_008_008-2021102612207.70 ppm
2022-03-01CA5410020_008_008-2022030111557.50 ppm
2022-05-02CA5410020_008_008-20220502111012.0 ppm
2022-05-17CA5410020_008_008-20220517122212.0 ppm
2022-06-30CA5410020_008_008-20220630104512.0 ppm
2022-09-22CA5410020_004_004-202209221415ND
2022-09-22CA5410020_009_009-2022092213281.30 ppm
2022-09-22CA5410020_005_005-202209221400ND
2022-09-22CA5410020_007_007-2022092212351.30 ppm
2022-09-22CA5410020_006_006-2022092213452.50 ppm
2022-09-22CA5410020_010_010-2022092213240.670 ppm
2022-09-27CA5410020_008_008-20220927122510.00 ppm
2022-10-17CA5410020_008_008-20221017114510.00 ppm
2023-03-27CA5410020_008_008-2023032712108.70 ppm
2023-04-25CA5410020_008_008-2023042513389.10 ppm
2023-08-15CA5410020_009_009-2023081511101.80 ppm
2023-08-15CA5410020_007_007-2023081512201.50 ppm
2023-08-15CA5410020_004_004-202308151240ND
2023-08-15CA5410020_005_005-2023081512301.20 ppm
2023-08-15CA5410020_010_010-2023081511000.690 ppm
2023-08-15CA5410020_008_008-2023081511189.00 ppm
2023-08-15CA5410020_006_006-2023081512002.00 ppm
2023-10-30CA5410020_008_008-20231030130011.0 ppm
2023-11-02CA5410020_010_010-2023110211100.910 ppm
2023-11-02CA5410020_006_006-2023110211302.40 ppm
2023-11-02CA5410020_009_009-2023110211200.820 ppm