Nitrate
Big Bear City CSD
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | 1.01 ppm | 26 | 17 | ND - 4.07 ppm |
2015 | 1.09 ppm | 14 | 9 | ND - 4.29 ppm |
2016 | 0.900 ppm | 14 | 7 | ND - 4.20 ppm |
2017 | 0.851 ppm | 41 | 21 | ND - 4.30 ppm |
2018 | 0.856 ppm | 14 | 8 | ND - 4.20 ppm |
2019 | 0.674 ppm | 14 | 5 | ND - 3.90 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EWG Health Guideline 0.14 ppm
The EWG Health Guideline of 0.14 ppm for nitrate was defined by EWG . This health guideline protects against cancer and harm to fetal growth and development.
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 |
---|---|---|
2014-06-04 | 3761-001-0000 | ND |
2014-06-04 | 3761-002-0000 | ND |
2014-06-04 | 3761-003-0000 | ND |
2014-06-04 | 3761-004-0000 | 3.84 ppm |
2014-06-04 | 3761-005-0000 | 0.520 ppm |
2014-06-04 | 3761-006-0000 | 0.768 ppm |
2014-06-04 | 3761-008-0000 | ND |
2014-06-04 | 3761-009-0000 | 1.90 ppm |
2014-06-04 | 3761-010-0000 | 2.48 ppm |
2014-06-04 | 3761-012-0000 | 1.81 ppm |
2014-06-04 | 3761-014-0000 | 0.700 ppm |
2014-06-04 | 3761-015-0000 | 0.452 ppm |
2014-06-04 | 3761-016-0000 | ND |
2014-06-18 | 3761-001-0936 | ND |
2014-06-18 | 3761-002-0921 | ND |
2014-06-18 | 3761-003-0755 | ND |
2014-06-18 | 3761-004-1103 | 4.07 ppm |
2014-06-18 | 3761-005-1107 | 0.565 ppm |
2014-06-18 | 3761-006-1001 | 0.926 ppm |
2014-06-18 | 3761-008-1053 | 0.452 ppm |
2014-06-18 | 3761-009-1111 | 2.03 ppm |
2014-06-18 | 3761-010-1119 | 2.71 ppm |
2014-06-18 | 3761-012-1048 | 1.94 ppm |
2014-06-18 | 3761-014-1009 | 0.723 ppm |
2014-06-18 | 3761-015-1039 | 0.497 ppm |
2014-06-18 | 3761-016-1026 | ND |
2015-06-03 | 3761-003-0000 | ND |
2015-06-03 | 3761-004-0000 | 4.29 ppm |
2015-06-03 | 3761-005-0000 | 0.836 ppm |
2015-06-03 | 3761-008-0000 | ND |
2015-06-03 | 3761-009-0000 | 2.71 ppm |
2015-06-03 | 3761-010-0000 | 2.48 ppm |
2015-06-03 | 3761-012-0000 | 1.83 ppm |
2015-06-03 | 3761-014-0000 | 0.474 ppm |
2015-06-03 | 3761-015-0000 | 0.500 ppm |
2015-06-03 | 3761-016-0000 | ND |
2015-06-03 | 3761-017-0000 | 0.497 ppm |
2015-06-03 | 3761-018-0000 | 1.69 ppm |
2015-06-10 | 3761-001-0000 | ND |
2015-06-10 | 3761-002-0000 | ND |
2016-02-24 | 3761-006-0000 | 0.910 ppm |
2016-06-01 | 3761-003-0000 | ND |
2016-06-01 | 3761-004-0000 | 4.20 ppm |
2016-06-01 | 3761-005-0000 | ND |
2016-06-01 | 3761-008-0000 | ND |
2016-06-01 | 3761-009-0000 | 2.90 ppm |
2016-06-01 | 3761-010-0000 | 1.50 ppm |
2016-06-01 | 3761-012-0000 | 1.70 ppm |
2016-06-01 | 3761-014-0000 | ND |
2016-06-01 | 3761-015-0000 | 0.500 ppm |
2016-06-01 | 3761-016-0000 | ND |
2016-06-08 | 3761-001-0000 | ND |
2016-06-08 | 3761-002-0000 | ND |
2016-06-08 | 3761-006-0000 | 0.890 ppm |
2017-05-31 | 3761-001-0000 | ND |
2017-05-31 | 3761-001-0910 | ND |
2017-05-31 | 3761-002-0000 | ND |
2017-05-31 | 3761-002-0850 | ND |
2017-05-31 | 3761-003-0000 | ND |
2017-05-31 | 3761-004-0000 | 4.00 ppm |
2017-05-31 | 3761-004-1015 | 4.20 ppm |
2017-05-31 | 3761-005-0000 | 0.580 ppm |
2017-05-31 | 3761-005-1020 | 0.570 ppm |
2017-05-31 | 3761-006-0000 | 1.40 ppm |
2017-05-31 | 3761-006-1130 | 1.50 ppm |
2017-05-31 | 3761-008-0000 | ND |
2017-05-31 | 3761-008-0953 | ND |
2017-05-31 | 3761-009-0000 | 2.40 ppm |
2017-05-31 | 3761-009-1020 | 2.50 ppm |
2017-05-31 | 3761-010-0000 | 0.720 ppm |
2017-05-31 | 3761-010-1040 | 0.710 ppm |
2017-05-31 | 3761-012-0000 | 1.40 ppm |
2017-05-31 | 3761-012-1000 | 1.50 ppm |
2017-05-31 | 3761-014-0000 | ND |
2017-05-31 | 3761-014-0930 | ND |
2017-05-31 | 3761-015-0000 | 0.820 ppm |
2017-05-31 | 3761-015-0840 | 0.830 ppm |
2017-05-31 | 3761-016-0000 | ND |
2017-05-31 | 3761-016-0940 | ND |
2017-05-31 | 3761-020-0800 | ND |
2017-05-31 | 3761-021-0800 | ND |
2017-06-07 | 3761-001-1121 | ND |
2017-06-07 | 3761-002-1100 | ND |
2017-06-07 | 3761-004-0737 | 4.30 ppm |
2017-06-07 | 3761-005-0747 | 0.700 ppm |
2017-06-07 | 3761-006-1029 | 1.40 ppm |
2017-06-07 | 3761-008-0811 | ND |
2017-06-07 | 3761-009-0737 | 2.60 ppm |
2017-06-07 | 3761-010-0727 | 0.700 ppm |
2017-06-07 | 3761-012-0758 | 1.50 ppm |
2017-06-07 | 3761-014-0820 | ND |
2017-06-07 | 3761-015-0854 | 0.580 ppm |
2017-06-07 | 3761-016-0832 | ND |
2017-06-07 | 3761-020-0940 | ND |
2017-06-07 | 3761-021-0940 | ND |
2018-06-20 | 3761-001-0000 | ND |
2018-06-20 | 3761-002-0000 | ND |
2018-06-20 | 3761-004-0000 | 4.20 ppm |
2018-06-20 | 3761-005-0000 | 0.990 ppm |
2018-06-20 | 3761-006-0000 | 1.40 ppm |
2018-06-20 | 3761-008-0000 | 0.400 ppm |
2018-06-20 | 3761-009-0000 | 2.40 ppm |
2018-06-20 | 3761-010-0000 | 0.710 ppm |
2018-06-20 | 3761-012-0000 | 1.30 ppm |
2018-06-20 | 3761-014-0000 | ND |
2018-06-20 | 3761-015-0000 | 0.580 ppm |
2018-06-20 | 3761-016-0000 | ND |
2018-06-20 | 3761-020-0000 | ND |
2018-06-20 | 3761-021-0000 | ND |
2019-06-05 | 3761-001-0000 | ND |
2019-06-05 | 3761-002-0000 | ND |
2019-06-05 | 3761-004-0000 | 3.90 ppm |
2019-06-05 | 3761-005-0000 | ND |
2019-06-05 | 3761-006-0000 | 1.30 ppm |
2019-06-05 | 3761-008-0000 | ND |
2019-06-05 | 3761-009-0000 | 2.30 ppm |
2019-06-05 | 3761-010-0000 | ND |
2019-06-05 | 3761-012-0000 | 1.30 ppm |
2019-06-05 | 3761-014-0000 | ND |
2019-06-05 | 3761-015-0000 | 0.630 ppm |
2019-06-05 | 3761-016-0000 | ND |
2019-06-05 | 3761-020-0000 | ND |
2019-06-05 | 3761-021-0000 | ND |