Know Your Environment. Protect Your Health.

Nitrate and nitrite

Desert Sky Dwid

Nitrate and nitrite enter water from fertilizer runoff, septic tanks and urban runoff. These contaminants can cause oxygen deprivation for infants and increase the risk of cancer. Nitrite is significantly more toxic than nitrate. Click here to read more about nitrate.

 

139

Samples

0

Samples exceeding legal limit (MCL)

133

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20184.10 ppm223.80 ppm - 4.40 ppm
2019N/A00N/A
20201.45 ppm3634ND - 4.77 ppm
20210.461 ppm36360.120 ppm - 1.40 ppm
20220.402 ppm32320.220 ppm - 0.750 ppm
20230.676 ppm33330.200 ppm - 4.30 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

ppm = parts per million

All test results

Date Lab ID Result
2018-07-18201807190397I3.80 ppm
2018-07-18201807190398I4.40 ppm
2020-12-2220L2595-01ND
2020-12-2220L2595-023.70 ppm
2020-12-2220L2595-03ND
2020-12-2220L2595-040.140 ppm
2020-12-2220L2595-050.250 ppm
2020-12-2220L2595-060.250 ppm
2020-12-2220L2595-073.23 ppm
2020-12-2220L2595-080.270 ppm
2020-12-2220L2595-090.150 ppm
2020-12-2220L2595-100.620 ppm
2020-12-2220L2595-110.990 ppm
2020-12-2220L2595-123.68 ppm
2020-12-2220L2595-133.10 ppm
2020-12-2220L2595-143.34 ppm
2020-12-2220L2595-150.460 ppm
2020-12-2220L2595-160.460 ppm
2020-12-2220L2595-172.62 ppm
2020-12-2220L2595-183.74 ppm
2020-12-2220L2595-190.250 ppm
2020-12-2220L2595-203.72 ppm
2020-12-2220L2595-213.28 ppm
2020-12-2220L2595-222.03 ppm
2020-12-2220L2595-230.250 ppm
2020-12-2220L2595-244.77 ppm
2020-12-2220L2595-250.440 ppm
2020-12-2220L2595-261.96 ppm
2020-12-2220L2595-272.37 ppm
2020-12-2220L2595-280.330 ppm
2020-12-2220L2595-290.330 ppm
2020-12-2220L2595-300.450 ppm
2020-12-2220L2595-310.480 ppm
2020-12-2220L2595-320.430 ppm
2020-12-2220L2595-330.540 ppm
2020-12-2220L2595-342.68 ppm
2020-12-2220L2595-350.700 ppm
2020-12-2220L2595-360.140 ppm
2021-12-0921L1322-010.290 ppm
2021-12-0921L1322-020.400 ppm
2021-12-0921L1322-030.290 ppm
2021-12-0921L1322-041.40 ppm
2021-12-0921L1322-050.310 ppm
2021-12-0921L1322-060.280 ppm
2021-12-0921L1322-070.380 ppm
2021-12-0921L1322-080.290 ppm
2021-12-0921L1322-090.420 ppm
2021-12-0921L1322-100.440 ppm
2021-12-0921L1322-110.470 ppm
2021-12-0921L1322-120.440 ppm
2021-12-0921L1322-130.290 ppm
2021-12-0921L1322-140.640 ppm
2021-12-0921L1322-150.660 ppm
2021-12-0921L1322-160.560 ppm
2021-12-0921L1322-170.720 ppm
2021-12-0921L1322-180.510 ppm
2021-12-0921L1322-190.710 ppm
2021-12-0921L1322-200.750 ppm
2021-12-0921L1322-210.750 ppm
2021-12-0921L1322-230.500 ppm
2021-12-0921L1322-240.490 ppm
2021-12-0921L1322-250.680 ppm
2021-12-0921L1322-260.490 ppm
2021-12-0921L1322-270.790 ppm
2021-12-0921L1322-280.120 ppm
2021-12-0921L1322-290.230 ppm
2021-12-0921L1322-300.220 ppm
2021-12-0921L1322-310.300 ppm
2021-12-0921L1322-320.380 ppm
2021-12-0921L1322-330.340 ppm
2021-12-0921L1322-340.370 ppm
2021-12-0921L1322-350.390 ppm
2021-12-0921L1322-360.140 ppm
2021-12-0921L1322-370.150 ppm
2022-01-0422A0425-010.490 ppm
2022-06-15550-185685-10IOC0.290 ppm
2022-06-15550-185685-11IOC0.280 ppm
2022-06-15550-185685-12IOC0.290 ppm
2022-06-15550-185685-13IOC0.680 ppm
2022-06-15550-185685-14IOC0.660 ppm
2022-06-15550-185685-15IOC0.310 ppm
2022-06-15550-185685-16IOC0.310 ppm
2022-06-15550-185685-17IOC0.250 ppm
2022-06-15550-185685-18IOC0.750 ppm
2022-06-15550-185685-19IOC0.400 ppm
2022-06-15550-185685-20IOC0.400 ppm
2022-06-15550-185685-21IOC0.440 ppm
2022-06-15550-185685-23IOC0.400 ppm
2022-06-15550-185685-24IOC0.670 ppm
2022-06-15550-185685-25IOC0.400 ppm
2022-06-15550-185685-26IOC0.400 ppm
2022-06-15550-185685-27IOC0.680 ppm
2022-06-15550-185685-28IOC0.220 ppm
2022-06-15550-185685-29IOC0.670 ppm
2022-06-15550-185685-2IOC0.290 ppm
2022-06-15550-185685-30IOC0.390 ppm
2022-06-15550-185685-31IOC0.410 ppm
2022-06-15550-185685-32IOC0.390 ppm
2022-06-15550-185685-33IOC0.390 ppm
2022-06-15550-185685-3IOC0.290 ppm
2022-06-15550-185685-4IOC0.290 ppm
2022-06-15550-185685-5IOC0.280 ppm
2022-06-15550-185685-6IOC0.290 ppm
2022-06-15550-185685-7IOC0.280 ppm
2022-06-15550-185685-8IOC0.290 ppm
2022-06-15550-185685-9IOC0.280 ppm
2023-06-23550-203846-10.280 ppm
2023-06-23550-203846-100.430 ppm
2023-06-23550-203846-110.320 ppm
2023-06-23550-203846-120.470 ppm
2023-06-23550-203846-130.260 ppm
2023-06-23550-203846-141.70 ppm
2023-06-23550-203846-150.270 ppm
2023-06-23550-203846-160.530 ppm
2023-06-23550-203846-170.310 ppm
2023-06-23550-203846-184.30 ppm
2023-06-23550-203846-190.530 ppm
2023-06-23550-203846-20.290 ppm
2023-06-23550-203846-200.310 ppm
2023-06-23550-203846-210.240 ppm
2023-06-23550-203846-220.530 ppm
2023-06-23550-203846-230.520 ppm
2023-06-23550-203846-240.530 ppm
2023-06-23550-203846-250.500 ppm
2023-06-23550-203846-260.540 ppm
2023-06-23550-203846-270.520 ppm
2023-06-23550-203846-280.460 ppm
2023-06-23550-203846-290.500 ppm
2023-06-23550-203846-30.520 ppm
2023-06-23550-203846-300.200 ppm
2023-06-23550-203846-310.490 ppm
2023-06-23550-203846-320.280 ppm
2023-06-23550-203846-330.500 ppm
2023-06-23550-203846-40.520 ppm
2023-06-23550-203846-53.60 ppm
2023-06-23550-203846-60.420 ppm
2023-06-23550-203846-70.480 ppm
2023-06-23550-203846-80.480 ppm
2023-06-23550-203846-90.490 ppm