Know Your Environment. Protect Your Health.

Nitrate

Terra Bella Irrigation District - Tbt

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.

 

71

Samples

0

Samples exceeding legal limit (MCL)

33

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.90 ppm158ND - 6.20 ppm
20191.87 ppm158ND - 6.10 ppm
20200.811 ppm126ND - 5.60 ppm
20210.306 ppm103ND - 1.30 ppm
20220.209 ppm102ND - 1.40 ppm
20230.651 ppm96ND - 1.50 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
2018-02-27CA5410038_013_013-2018022712206.20 ppm
2018-06-13CA5410038_013_013-2018061311325.50 ppm
2018-09-17CA5410038_001_001-201809171140ND
2018-09-24CA5410038_032_032-201809241300ND
2018-09-24CA5410038_002_002-201809241345ND
2018-09-24CA5410038_025_025-2018092414251.40 ppm
2018-09-24CA5410038_016_016-201809241335ND
2018-09-24CA5410038_004_004-2018092412292.50 ppm
2018-09-24CA5410038_024_024-2018092414150.810 ppm
2018-09-24CA5410038_013_013-2018092412145.90 ppm
2018-09-24CA5410038_009_009-201809241354ND
2018-09-24CA5410038_014_014-201809241215ND
2018-09-24CA5410038_020_020-2018092413420.430 ppm
2018-09-24CA5410038_027_027-201809241445ND
2018-12-13CA5410038_013_013-2018121311585.80 ppm
2019-02-26CA5410038_013_013-2019022611006.10 ppm
2019-05-10CA5410038_013_013-2019051012356.10 ppm
2019-08-29CA5410038_032_032-2019082912080.490 ppm
2019-08-29CA5410038_002_002-201908291226ND
2019-08-29CA5410038_001_001-201908291400ND
2019-08-29CA5410038_013_013-2019082911085.70 ppm
2019-08-29CA5410038_009_009-201908291228ND
2019-08-29CA5410038_014_014-201908291125ND
2019-08-29CA5410038_027_027-201908291340ND
2019-08-29CA5410038_025_025-2019082913001.40 ppm
2019-08-29CA5410038_024_024-2019082912490.580 ppm
2019-08-29CA5410038_016_016-201908291216ND
2019-08-29CA5410038_004_004-2019082911142.10 ppm
2019-08-29CA5410038_020_020-201908291222ND
2019-11-21CA5410038_013_013-2019112112385.60 ppm
2020-04-28CA5410038_013_013-2020042813445.60 ppm
2020-08-27CA5410038_001_001-202008271300ND
2020-08-31CA5410038_002_002-202008311202ND
2020-08-31CA5410038_024_024-2020083113040.480 ppm
2020-08-31CA5410038_016_016-2020083111500.410 ppm
2020-08-31CA5410038_032_032-202008311230ND
2020-08-31CA5410038_020_020-2020083112151.30 ppm
2020-08-31CA5410038_027_027-202008311329ND
2020-08-31CA5410038_009_009-202008311210ND
2020-08-31CA5410038_025_025-2020083113151.30 ppm
2020-11-30CA5410038_024_024-2020113012250.640 ppm
2020-12-29CA5410038_028_028-202012291250ND
2021-08-23CA5410038_001_001-202108231210ND
2021-09-13CA5410038_024_024-2021091312440.970 ppm
2021-09-13CA5410038_016_016-202109131140ND
2021-09-13CA5410038_028_028-2021091313250.790 ppm
2021-09-13CA5410038_027_027-202109131310ND
2021-09-13CA5410038_002_002-202109131158ND
2021-09-13CA5410038_020_020-202109131152ND
2021-09-13CA5410038_032_032-202109131219ND
2021-09-13CA5410038_009_009-202109131205ND
2021-09-13CA5410038_025_025-2021091312551.30 ppm
2022-06-16CA5410038_009_009-202206161157ND
2022-08-15CA5410038_001_001-202208151150ND
2022-09-19CA5410038_024_024-2022091912200.690 ppm
2022-09-19CA5410038_028_028-202209191305ND
2022-09-19CA5410038_009_009-202209191158ND
2022-09-19CA5410038_020_020-202209191152ND
2022-09-19CA5410038_025_025-2022091912321.40 ppm
2022-09-19CA5410038_016_016-202209191148ND
2022-09-19CA5410038_032_032-202209191135ND
2022-09-19CA5410038_027_027-202209191255ND
2023-03-28CA5410038_002_002-202303281235ND
2023-07-24CA5410038_001_001-202307241220ND
2023-09-12CA5410038_009_009-2023091211581.20 ppm
2023-09-12CA5410038_016_016-2023091211380.600 ppm
2023-09-12CA5410038_020_020-2023091211470.260 ppm
2023-09-12CA5410038_024_024-2023091212201.10 ppm
2023-09-12CA5410038_025_025-2023091212301.20 ppm
2023-12-04CA5410038_027_027-2023120412441.50 ppm
2023-12-04CA5410038_028_028-202312041315ND