Know Your Environment. Protect Your Health.

Nitrite

Cisco

Nitrite, closely related to the fertilizer chemical nitrate, comes from urban runoff and from fertilizer applied to agricultural lands to pollute drinking water. Nitrite is significantly more toxic than nitrate. Excessive nitrite in water can cause oxygen deprivation in infants and increase the risk of cancer.

 

110

Samples

22

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.04 ppm440.663 ppm - 1.42 ppm
20190.786 ppm880.260 ppm - 1.36 ppm
20200.672 ppm17170.330 ppm - 1.64 ppm
20210.566 ppm25250.140 ppm - 1.07 ppm
20220.747 ppm29290.150 ppm - 1.52 ppm
20230.649 ppm2726ND - 1.75 ppm

ppm = parts per million

State, National, and Health Guidelines for Drinking Water

EPA Maximum Contaminant
Level (MCL): 1 ppm

The legal limit for nitrite, established in 1991, was based on the rate of conversion of ingested nitrate into nitrite in adults. This limit may not fully protect against the risk of cancer due to nitrite exposure.

ppm = parts per million

All test results

Date Lab ID Result
2018-02-0518B0142-01_010.663 ppm
2018-05-2218E0962-011.42 ppm
2018-09-0518I0108-011.31 ppm
2018-11-1418K0442-01_010.771 ppm
2019-02-2019B0402-011.23 ppm
2019-05-2019E0649-011.10 ppm
2019-09-1819I0761-011.36 ppm
2019-10-2819J0974-010.780 ppm
2019-10-2819J0974-020.810 ppm
2019-11-2019K0604-010.260 ppm
2019-11-2019K0604-020.470 ppm
2019-12-1819L0453-010.280 ppm
2020-01-2020A0413-010.330 ppm
2020-01-2020A0413-020.560 ppm
2020-02-2420B0563-010.410 ppm
2020-02-2420B0563-020.540 ppm
2020-03-1820C0500-020.590 ppm
2020-04-1420D0220-010.590 ppm
2020-04-1420D0220-020.780 ppm
2020-05-2020E0337-010.630 ppm
2020-06-1720F0344-010.740 ppm
2020-06-1720F0344-020.380 ppm
2020-09-1520I0619-010.780 ppm
2020-10-2720J0881-021.64 ppm
2020-10-2920J0937-010.580 ppm
2020-11-1720K0423-010.690 ppm
2020-11-1720K0423-020.840 ppm
2020-12-0820L0258-010.580 ppm
2020-12-0820L0258-020.760 ppm
2021-01-1921A0339-010.460 ppm
2021-01-1921A0339-020.920 ppm
2021-02-0821B0225-010.580 ppm
2021-02-0821B0225-020.660 ppm
2021-03-1021C0410-010.630 ppm
2021-03-1021C0410-020.680 ppm
2021-03-1021C0411-010.640 ppm
2021-04-1921D0512-010.520 ppm
2021-04-1921D0512-021.000 ppm
2021-05-1921E0549-010.170 ppm
2021-05-1921E0549-020.570 ppm
2021-06-1421F0506-010.140 ppm
2021-06-1421F0506-020.660 ppm
2021-07-1221G0389-010.830 ppm
2021-07-1221G0389-020.210 ppm
2021-08-1621H0841-010.230 ppm
2021-08-1621H0841-021.07 ppm
2021-09-2021I0778-010.190 ppm
2021-09-2021I0778-020.750 ppm
2021-10-1121J0318-010.910 ppm
2021-10-1121J0318-020.210 ppm
2021-11-0821K0336-010.970 ppm
2021-11-0821K0336-020.240 ppm
2021-12-1321L0413-010.660 ppm
2021-12-1321L0413-020.240 ppm
2022-01-1122A0260-011.07 ppm
2022-01-1122A0260-020.150 ppm
2022-02-2122B0508-010.590 ppm
2022-02-2122B0508-020.180 ppm
2022-03-0922C0238-010.720 ppm
2022-03-0922C0238-020.180 ppm
2022-03-0922C0238-030.180 ppm
2022-04-2022D0524-010.850 ppm
2022-04-2022D0524-020.280 ppm
2022-05-1022E0263-010.850 ppm
2022-05-1022E0263-020.280 ppm
2022-06-2222F1206-010.800 ppm
2022-06-2222F1206-020.620 ppm
2022-07-2022G0783-011.52 ppm
2022-07-2022G0783-020.790 ppm
2022-07-2222G0875-011.03 ppm
2022-08-1722H0923-010.910 ppm
2022-08-1722H0923-021.06 ppm
2022-08-2322H1105-011.17 ppm
2022-08-2322H1105-021.19 ppm
2022-09-2122I0909-010.800 ppm
2022-09-2122I0909-021.40 ppm
2022-09-2622I1015-010.650 ppm
2022-10-1922J0941-010.940 ppm
2022-10-1922J0941-020.910 ppm
2022-11-2122K0607-011.01 ppm
2022-11-2122K0607-020.520 ppm
2022-12-0722L0191-010.470 ppm
2022-12-0722L0191-020.550 ppm
2023-01-1723A0275-011.23 ppm
2023-01-1723A0275-020.440 ppm
2023-02-1523B0512-010.560 ppm
2023-02-1523B0512-020.460 ppm
2023-02-1523B0512-030.530 ppm
2023-03-1523C0399-011.11 ppm
2023-03-1523C0399-020.270 ppm
2023-04-1923D0461-011.31 ppm
2023-04-1923D0461-020.700 ppm
2023-05-2223E0923-011.05 ppm
2023-05-2223E0923-020.650 ppm
2023-06-1923F0762-011.75 ppm
2023-06-1923F0762-021.32 ppm
2023-06-2223F0891-010.940 ppm
2023-06-2223F0891-021.02 ppm
2023-07-2023G0862-010.190 ppm
2023-07-2023G0862-020.150 ppm
2023-08-2223H1190-01ND
2023-08-2223H1190-020.360 ppm
2023-09-2523I0989-010.460 ppm
2023-09-2523I0989-020.430 ppm
2023-10-2423J0869-010.290 ppm
2023-10-2423J0869-020.580 ppm
2023-11-1523K0423-010.380 ppm
2023-11-1523K0423-020.400 ppm
2023-12-1323L0296-010.310 ppm
2023-12-1323L0296-020.620 ppm