Nitrate

Epcor Water - Agua Fria

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

180

Samples

Samples exceeding legal limit (MCL)

113

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	1.21 ppm	29	19	ND - 5.23 ppm
2015	0.408 ppm	27	16	ND - 3.12 ppm
2016	0.391 ppm	27	19	ND - 3.23 ppm
2017	0.466 ppm	26	14	ND - 4.00 ppm
2018	0.741 ppm	35	29	ND - 3.45 ppm
2019	0.734 ppm	36	25	ND - 4.01 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
2014-02-20	4021662-01I	1.50 ppm
2014-02-20	4021662-02I	2.77 ppm
2014-02-21	4021720-01I	3.48 ppm
2014-02-21	4021720-02	3.43 ppm
2014-03-17	4031321-01I	2.80 ppm
2014-03-18	4031423-01I	5.23 ppm
2014-03-18	4031423-02I	1.04 ppm
2014-03-18	4031423-03I	1.46 ppm
2014-03-19	4031531-01	0.310 ppm
2014-05-07	4050637-01	4.42 ppm
2014-05-07	4050637-02	1.09 ppm
2014-05-07	4050637-03	1.30 ppm
2014-05-07	4050637-04	0.220 ppm
2014-05-08	4050765-01	0.330 ppm
2014-05-08	4050765-02	0.270 ppm
2014-05-08	4050765-03	0.250 ppm
2014-06-16	4061297-01	ND
2014-06-24	4061967-01I	0.330 ppm
2014-08-01	4080053-01	4.66 ppm
2014-08-05	4080428-04	ND
2014-08-06	4080551-01I	ND
2014-08-06	4080551-02	ND
2014-09-29	4092331-01	ND
2014-09-29	4092331-02	ND
2014-11-17	4111350-04	ND
2014-11-17	4111350-05	ND
2014-11-18	4111490-01	ND
2014-11-18	4111490-02	ND
2014-11-18	4111490-03	0.220 ppm
2015-02-26	5022333-03	0.230 ppm
2015-02-26	5022333-04	1.72 ppm
2015-02-26	5022333-05	1.02 ppm
2015-03-05	5030509-01	0.350 ppm
2015-03-05	5030509-02	0.260 ppm
2015-03-05	5030509-03	0.250 ppm
2015-04-27	5042326-01	3.12 ppm
2015-04-27	5042326-02	0.980 ppm
2015-05-12	5051006-01	1.45 ppm
2015-05-12	5051006-02	ND
2015-05-12	5051006-03	ND
2015-05-12	5051006-04	ND
2015-05-12	5051006-05	ND
2015-05-12	5051006-06	0.210 ppm
2015-05-12	5051006-07	ND
2015-08-03	5080125-02I	ND
2015-08-03	5080125-03I	ND
2015-08-03	5080125-04	ND
2015-08-03	5080125-05	ND
2015-08-04	5080273-03I	ND
2015-08-04	5080273-04	ND
2015-11-30	5112306-04	0.220 ppm
2015-11-30	5112306-05	0.220 ppm
2015-11-30	5112306-06	0.220 ppm
2015-12-03	5120407-01	0.230 ppm
2015-12-03	5120407-02I	0.300 ppm
2015-12-03	5120407-03	0.230 ppm
2016-03-22	6031906-01	0.570 ppm
2016-03-22	6031906-02	0.340 ppm
2016-03-23	6032047-01I	0.360 ppm
2016-03-23	6032047-02	0.360 ppm
2016-03-23	6032047-03	0.360 ppm
2016-03-23	6032047-04	0.360 ppm
2016-06-01	6060112-01	3.23 ppm
2016-06-01	6060112-02	1.44 ppm
2016-06-01	6060112-03	1.25 ppm
2016-06-01	6060112-04	0.230 ppm
2016-06-06	6060444-01	0.210 ppm
2016-06-06	6060444-02I	ND
2016-06-06	6060444-03	0.220 ppm
2016-06-06	6060444-04	0.210 ppm
2016-06-06	6060444-05	ND
2016-09-16	6091438-01	ND
2016-09-16	6091438-02	ND
2016-09-16	6091438-03	ND
2016-09-16	6091438-04	ND
2016-09-16	6091438-05	ND
2016-09-20	6091673-01	ND
2016-12-01	6120081-01	0.320 ppm
2016-12-01	6120081-02I	0.220 ppm
2016-12-01	6120081-03	0.200 ppm
2016-12-01	6120081-04	0.220 ppm
2016-12-02	6120164-04	0.230 ppm
2016-12-02	6120164-05	0.230 ppm
2017-03-16	7031480-02	0.250 ppm
2017-03-20	7031693-01	0.240 ppm
2017-03-20	7031693-02	0.240 ppm
2017-03-21	7031806-01	0.230 ppm
2017-03-21	7031806-02	0.240 ppm
2017-03-22	7031982-01	0.220 ppm
2017-05-18	7051941-01	3.19 ppm
2017-05-18	7051941-02	0.220 ppm
2017-05-18	7051941-03	1.25 ppm
2017-05-30	7052780-01	0.200 ppm
2017-05-31	7052920-01	1.42 ppm
2017-05-31	7052920-02	ND
2017-06-06	7060554-03	ND
2017-06-06	7060554-04	ND
2017-08-09	7081006-01	ND
2017-08-09	7081006-02	ND
2017-08-09	7081006-03	ND
2017-08-10	7081172-01	ND
2017-08-10	7081172-02	ND
2017-08-21	7082146-01	ND
2017-12-05	7120469-01	ND
2017-12-05	7120469-02	0.200 ppm
2017-12-05	7120469-03IOC	ND
2017-12-05	7120469-04	ND
2017-12-06	7120629-01	0.218 ppm
2017-12-13	7121345-04	4.00 ppm
2018-03-05	18C0358-01 IOC	3.15 ppm
2018-03-05	18C0358-02 IOC	1.25 ppm
2018-03-05	18C0358-03 IOC	ND
2018-03-06	18C0528-01 IOC	ND
2018-03-06	18C0528-02 IOC	ND
2018-03-20	18C1975-01 IOC	ND
2018-03-20	18C1975-02 IOC	ND
2018-03-23	18C2301-01 IOC	1.35 ppm
2018-03-23	18C2301-02 IOC	ND
2018-05-29	18E2804-01	3.45 ppm
2018-05-29	18E2804-02	1.53 ppm
2018-05-29	18E2804-03	1.33 ppm
2018-05-30	18E2948-01 IOC	0.250 ppm
2018-05-30	18E2948-02 IOC	0.240 ppm
2018-05-30	18E2948-03 IOC	0.240 ppm
2018-06-07	18F0816-01	0.230 ppm
2018-06-07	18F0816-02	0.240 ppm
2018-06-11	18F1098-01	0.180 ppm
2018-08-16	18H1816-01	3.41 ppm
2018-08-16	18H1816-02 IOC	1.26 ppm
2018-08-16	18H1816-04 IOC	0.0900 ppm
2018-08-21	18H2278-01 IOC	0.150 ppm
2018-08-21	18H2278-02	0.150 ppm
2018-08-21	18H2278-03 IOC	0.150 ppm
2018-08-21	18H2278-04	0.220 ppm
2018-08-23	18H2522-01 IOC	0.140 ppm
2018-11-13	18K1266-01	2.96 ppm
2018-11-13	18K1266-02	1.34 ppm
2018-11-13	18K1266-03	1.34 ppm
2018-11-15	18K1636-01	0.240 ppm
2018-11-15	18K1636-02	0.220 ppm
2018-11-15	18K1636-03	0.220 ppm
2018-11-26	18K2331-01	0.200 ppm
2018-11-26	18K2331-02	0.200 ppm
2018-11-26	18K2331-03	0.200 ppm
2019-03-13	19C1415-01	2.91 ppm
2019-03-13	19C1415-02	1.25 ppm
2019-03-13	19C1415-03	1.40 ppm
2019-03-13	19C1415-04	0.230 ppm
2019-03-14	19C1551-01	0.290 ppm
2019-03-14	19C1551-02	0.310 ppm
2019-03-14	19C1551-03	0.400 ppm
2019-03-14	19C1551-04	0.300 ppm
2019-03-21	19C2341-01	0.310 ppm
2019-05-21	19E2359-01	0.110 ppm
2019-05-21	19E2359-02	0.110 ppm
2019-05-21	19E2359-03	0.110 ppm
2019-05-22	19E2454-01	0.130 ppm
2019-05-22	19E2454-02	0.120 ppm
2019-05-22	19E2454-03	0.120 ppm
2019-05-24	19E2721-01	3.04 ppm
2019-05-24	19E2721-02	1.11 ppm
2019-05-24	19E2721-03	1.23 ppm
2019-08-28	19H3278-01	ND
2019-08-28	19H3278-02	ND
2019-08-28	19H3278-03	ND
2019-08-28	19H3278-04	ND
2019-08-29	19H3407-01	ND
2019-08-29	19H3407-02	ND
2019-09-10	1911144-01	3.56 ppm
2019-09-10	1911144-02	1.38 ppm
2019-09-10	1911144-03	1.25 ppm
2019-10-09	19J1358-01	ND
2019-10-09	19J1358-02	ND
2019-10-10	19J1493-01	ND
2019-10-10	19J1493-02	ND
2019-10-14	19J1715-01	ND
2019-10-14	19J1715-02	0.1000 ppm
2019-10-31	19J3587-01	4.01 ppm
2019-10-31	19J3587-02	1.36 ppm
2019-10-31	19J3587-03	1.27 ppm