Nitrate

Apple Valley Ranchos Water Company

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.

MORE ABOUT THIS CONTAMINANT

128

Samples

Samples exceeding legal limit (MCL)

126

Samples exceeding
health guidelines

Testing results - average by year

Year	Average result	Samples taken	Detections	Range of results
2013	N/A	0	0	N/A
2014	2.52 ppm	8	8	0.858 ppm - 4.29 ppm
2015	1.86 ppm	34	34	0.565 ppm - 4.29 ppm
2016	1.74 ppm	18	18	0.450 ppm - 5.80 ppm
2017	2.02 ppm	24	24	0.630 ppm - 4.70 ppm
2018	1.65 ppm	23	23	0.420 ppm - 4.90 ppm
2019	1.61 ppm	21	19	ND - 4.20 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
2014-05-29	4790-002-0930	4.29 ppm
2014-05-29	4790-009-0842	1.58 ppm
2014-05-29	4790-011-0830	3.16 ppm
2014-05-29	4790-014-1055	3.61 ppm
2014-05-29	4790-032-0850	1.17 ppm
2014-05-29	4790-033-0900	1.20 ppm
2014-08-27	4790-016-0705	0.858 ppm
2014-11-13	4790-004-0925	4.29 ppm
2015-06-25	4790-008-0845	3.61 ppm
2015-06-25	4790-013-0718	0.723 ppm
2015-06-25	4790-017-0825	0.858 ppm
2015-06-25	4790-021-0710	0.700 ppm
2015-06-25	4790-035-0648	0.565 ppm
2015-06-25	4790-036-0702	0.768 ppm
2015-07-15	4790-002-0000	4.29 ppm
2015-07-15	4790-002-1100	4.29 ppm
2015-07-15	4790-004-0000	3.39 ppm
2015-07-15	4790-004-0620	3.39 ppm
2015-07-15	4790-009-0000	1.36 ppm
2015-07-15	4790-009-0712	1.36 ppm
2015-07-15	4790-011-0000	2.71 ppm
2015-07-15	4790-011-0720	2.71 ppm
2015-07-15	4790-014-0000	3.84 ppm
2015-07-15	4790-014-1040	3.84 ppm
2015-07-15	4790-016-0628	0.858 ppm
2015-07-15	4790-017-0000	0.858 ppm
2015-07-15	4790-020-0000	1.17 ppm
2015-07-15	4790-020-0700	1.17 ppm
2015-07-15	4790-024-0000	1.42 ppm
2015-07-15	4790-024-0840	1.42 ppm
2015-07-15	4790-025-0000	2.71 ppm
2015-07-15	4790-025-0920	2.71 ppm
2015-07-15	4790-029-0000	1.51 ppm
2015-07-15	4790-029-0900	1.51 ppm
2015-07-15	4790-030-0000	0.700 ppm
2015-07-15	4790-030-0655	0.700 ppm
2015-07-15	4790-032-0000	1.15 ppm
2015-07-15	4790-032-0820	1.15 ppm
2015-07-15	4790-033-0000	1.08 ppm
2015-07-15	4790-033-0850	1.08 ppm
2015-08-06	4790-013-0800	1.20 ppm
2015-08-06	4790-025-0840	2.48 ppm
2016-05-11	4790-004-0750	5.80 ppm
2016-05-11	4790-024-0828	1.40 ppm
2016-05-11	4790-025-0645	2.80 ppm
2016-05-11	4790-029-0632	1.50 ppm
2016-05-11	4790-030-0925	1.80 ppm
2016-06-02	3761-037-1045	0.450 ppm
2016-07-21	4790-008-0815	4.50 ppm
2016-07-21	4790-009-0640	1.80 ppm
2016-07-21	4790-011-0645	2.90 ppm
2016-07-21	4790-013-0920	0.720 ppm
2016-07-21	4790-016-0715	0.920 ppm
2016-07-21	4790-017-0722	1.20 ppm
2016-07-21	4790-020-0930	1.30 ppm
2016-07-21	4790-021-0915	0.670 ppm
2016-07-21	4790-032-0650	0.830 ppm
2016-07-21	4790-033-0850	1.20 ppm
2016-07-21	4790-035-0828	0.550 ppm
2016-07-21	4790-036-0630	0.950 ppm
2017-04-05	4790-014-0915	4.00 ppm
2017-05-24	4790-009-0930	1.80 ppm
2017-05-24	4790-011-0940	2.40 ppm
2017-05-24	4790-014-1230	4.10 ppm
2017-05-24	4790-020-1015	1.30 ppm
2017-05-24	4790-032-0945	1.40 ppm
2017-05-24	4790-033-0825	1.40 ppm
2017-07-06	4790-004-0710	4.70 ppm
2017-07-06	4790-008-0825	4.20 ppm
2017-07-06	4790-011-0700	2.00 ppm
2017-07-06	4790-013-0925	0.880 ppm
2017-07-06	4790-014-1130	4.10 ppm
2017-07-06	4790-017-0725	0.980 ppm
2017-07-06	4790-020-0940	1.40 ppm
2017-07-06	4790-021-0638	0.810 ppm
2017-07-06	4790-024-0910	1.60 ppm
2017-07-06	4790-025-0945	3.10 ppm
2017-07-06	4790-029-0920	1.50 ppm
2017-07-06	4790-030-0932	0.750 ppm
2017-07-06	4790-032-0705	1.60 ppm
2017-07-06	4790-033-0835	1.40 ppm
2017-07-06	4790-035-0845	0.630 ppm
2017-07-06	4790-036-0630	0.870 ppm
2017-07-19	4790-009-0642	1.60 ppm
2018-05-09	4790-008-0720	2.00 ppm
2018-05-09	4790-013-0935	0.550 ppm
2018-05-09	4790-017-0700	1.20 ppm
2018-05-09	4790-021-0925	0.510 ppm
2018-05-09	4790-035-0625	0.420 ppm
2018-05-09	4790-036-0912	0.690 ppm
2018-07-11	4790-004-1020	4.90 ppm
2018-07-11	4790-008-0810	2.20 ppm
2018-07-11	4790-009-0732	2.00 ppm
2018-07-11	4790-011-0925	2.50 ppm
2018-07-11	4790-013-0950	0.760 ppm
2018-07-11	4790-014-0655	4.20 ppm
2018-07-11	4790-017-0650	1.10 ppm
2018-07-11	4790-020-0955	1.70 ppm
2018-07-11	4790-021-0940	0.710 ppm
2018-07-11	4790-024-0625	1.20 ppm
2018-07-11	4790-025-1000	3.00 ppm
2018-07-11	4790-029-0710	1.50 ppm
2018-07-11	4790-030-0920	1.60 ppm
2018-07-11	4790-032-0915	2.10 ppm
2018-07-11	4790-033-0745	1.50 ppm
2018-07-11	4790-035-0830	0.620 ppm
2018-07-11	4790-036-1135	0.910 ppm
2019-05-22	4790-004-0905	4.20 ppm
2019-05-22	4790-024-0952	1.10 ppm
2019-05-22	4790-025-1040	3.40 ppm
2019-05-22	4790-029-1020	1.40 ppm
2019-05-22	4790-030-1050	1.60 ppm
2019-07-10	4790-004-0842	2.20 ppm
2019-07-10	4790-008-0755	1.80 ppm
2019-07-10	4790-009-0735	1.10 ppm
2019-07-10	4790-011-0728	1.90 ppm
2019-07-10	4790-013-0710	0.420 ppm
2019-07-10	4790-014-1128	3.60 ppm
2019-07-10	4790-017-0635	0.950 ppm
2019-07-10	4790-020-0935	0.990 ppm
2019-07-10	4790-025-0658	2.70 ppm
2019-07-10	4790-029-0720	1.50 ppm
2019-07-10	4790-030-0930	0.930 ppm
2019-07-10	4790-032-0745	1.20 ppm
2019-07-10	4790-033-0912	1.20 ppm
2019-07-10	4790-035-0822	ND
2019-07-10	4790-036-0650	ND
2019-08-14	4790-024-0645	1.70 ppm