Nitrate and nitrite
City of Anaheim
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | N/A | 0 | 0 | N/A |
2014 | 2.78 ppm | 29 | 29 | 1.27 ppm - 4.28 ppm |
2015 | 2.74 ppm | 24 | 24 | 1.32 ppm - 4.34 ppm |
2016 | 2.63 ppm | 34 | 34 | 1.15 ppm - 4.96 ppm |
2017 | 2.31 ppm | 26 | 26 | 1.08 ppm - 3.98 ppm |
2018 | 2.51 ppm | 41 | 41 | 1.15 ppm - 5.38 ppm |
2019 | 2.55 ppm | 28 | 28 | 1.22 ppm - 4.78 ppm |
ppm = parts per million
State and national drinking water standards and health guidelines
EWG Health Guideline 0.14 ppm
The 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 |
---|---|---|
2014-01-21 | 4417-034-0810 | 4.02 ppm |
2014-01-21 | 4417-049-0850 | 1.93 ppm |
2014-01-21 | 4417-051-0950 | 3.74 ppm |
2014-01-22 | 4417-063-0835 | 1.27 ppm |
2014-01-22 | 4417-086-0815 | 1.40 ppm |
2014-01-22 | 4417-087-0920 | 3.30 ppm |
2014-02-20 | 4417-086-0935 | 1.30 ppm |
2014-02-20 | 4417-086-0950 | 1.31 ppm |
2014-04-01 | 4417-035-1205 | 3.11 ppm |
2014-04-01 | 4417-036-1150 | 2.36 ppm |
2014-04-01 | 4417-037-1125 | 1.97 ppm |
2014-04-01 | 4417-050-1025 | 2.66 ppm |
2014-04-01 | 4417-051-1000 | 3.74 ppm |
2014-04-01 | 4417-062-0945 | 3.55 ppm |
2014-04-03 | 4417-053-1100 | 4.28 ppm |
2014-04-03 | 4417-058-0905 | 3.06 ppm |
2014-04-03 | 4417-087-1035 | 2.99 ppm |
2014-04-03 | 4417-090-1010 | 2.47 ppm |
2014-06-18 | 4417-033-1100 | 3.60 ppm |
2014-06-19 | 4417-088-0905 | 2.86 ppm |
2014-07-01 | 4417-034-1015 | 3.91 ppm |
2014-07-01 | 4417-049-0940 | 1.91 ppm |
2014-07-01 | 4417-051-1055 | 3.58 ppm |
2014-07-02 | 4417-033-0925 | 2.87 ppm |
2014-07-02 | 4417-087-1040 | 2.74 ppm |
2014-07-02 | 4417-088-1110 | 1.83 ppm |
2014-07-22 | 4417-088-0830 | 2.89 ppm |
2014-07-22 | 4417-088-0840 | 2.93 ppm |
2014-10-02 | 4417-088-1105 | 3.05 ppm |
2015-01-07 | 4417-063-0910 | 1.32 ppm |
2015-01-07 | 4417-087-1235 | 2.82 ppm |
2015-03-03 | 4417-086-0850 | 1.54 ppm |
2015-04-09 | 4417-035-1015 | 2.79 ppm |
2015-04-09 | 4417-036-1030 | 2.01 ppm |
2015-04-09 | 4417-088-1000 | 2.89 ppm |
2015-04-13 | 4417-033-1010 | 3.53 ppm |
2015-04-13 | 4417-049-0905 | 2.02 ppm |
2015-04-13 | 4417-050-1215 | 2.50 ppm |
2015-04-13 | 4417-051-1110 | 3.66 ppm |
2015-04-13 | 4417-058-0745 | 3.00 ppm |
2015-04-13 | 4417-062-1145 | 4.34 ppm |
2015-04-13 | 4417-063-0920 | 1.39 ppm |
2015-04-13 | 4417-087-1055 | 3.07 ppm |
2015-04-27 | 4417-053-0835 | 4.15 ppm |
2015-04-27 | 4417-090-0905 | 2.50 ppm |
2015-07-07 | 4417-034-1140 | 4.02 ppm |
2015-07-14 | 4417-096-1120 | 2.91 ppm |
2015-08-13 | 4417-037-1105 | 1.71 ppm |
2015-08-17 | 4417-036-0920 | 1.87 ppm |
2015-08-17 | 4417-036-0930 | 1.87 ppm |
2015-08-17 | 4417-062-1040 | 3.60 ppm |
2015-08-17 | 4417-062-1050 | 3.60 ppm |
2015-10-05 | 4417-096-1230 | 2.72 ppm |
2016-01-05 | 4417-086-0955 | 1.44 ppm |
2016-01-11 | 4417-096-1010 | 2.58 ppm |
2016-04-05 | 4417-096-1120 | 2.59 ppm |
2016-04-11 | 4417-033-0855 | 3.54 ppm |
2016-04-11 | 4417-035-1135 | 3.40 ppm |
2016-04-11 | 4417-036-1120 | 1.56 ppm |
2016-04-11 | 4417-049-1230 | 4.96 ppm |
2016-04-11 | 4417-050-1200 | 2.44 ppm |
2016-04-11 | 4417-062-0945 | 3.80 ppm |
2016-04-18 | 4417-051-0935 | 3.39 ppm |
2016-04-18 | 4417-053-1000 | 4.02 ppm |
2016-04-18 | 4417-058-0825 | 2.11 ppm |
2016-04-18 | 4417-063-1120 | 1.45 ppm |
2016-04-18 | 4417-087-1035 | 3.10 ppm |
2016-04-18 | 4417-088-1230 | 2.42 ppm |
2016-04-18 | 4417-090-1055 | 2.55 ppm |
2016-05-23 | 4417-049-0940 | 2.12 ppm |
2016-05-23 | 4417-049-0955 | 2.11 ppm |
2016-05-23 | 4417-058-1045 | 3.37 ppm |
2016-05-23 | 4417-058-1100 | 3.34 ppm |
2016-05-23 | 4417-063-0835 | 1.46 ppm |
2016-05-23 | 4417-063-0850 | 1.45 ppm |
2016-05-23 | 4417-087-1010 | 3.06 ppm |
2016-05-23 | 4417-087-1025 | 3.05 ppm |
2016-07-07 | 4417-049-0950 | 2.88 ppm |
2016-07-07 | 4417-063-0800 | 1.45 ppm |
2016-07-07 | 4417-086-0910 | 1.47 ppm |
2016-07-11 | 4417-034-1120 | 3.58 ppm |
2016-07-11 | 4417-037-0955 | 1.15 ppm |
2016-07-11 | 4417-096-0905 | 2.35 ppm |
2016-10-10 | 4417-063-0920 | 1.38 ppm |
2016-10-11 | 4417-037-1030 | 1.17 ppm |
2016-10-19 | 4417-049-0840 | 4.35 ppm |
2016-10-19 | 4417-049-0855 | 4.31 ppm |
2017-01-03 | 4417-088-1220 | 2.28 ppm |
2017-01-30 | 4417-037-0940 | 1.10 ppm |
2017-01-30 | 4417-049-0845 | 3.58 ppm |
2017-03-29 | 4417-086-1315 | 1.57 ppm |
2017-04-04 | 4417-033-1000 | 3.42 ppm |
2017-04-04 | 4417-063-1150 | 1.68 ppm |
2017-04-04 | 4417-086-0930 | 1.49 ppm |
2017-04-05 | 4417-062-1240 | 3.69 ppm |
2017-04-05 | 4417-096-1135 | 2.11 ppm |
2017-04-10 | 4417-034-1020 | 3.41 ppm |
2017-04-10 | 4417-058-0930 | 2.77 ppm |
2017-04-10 | 4417-090-1050 | 2.63 ppm |
2017-04-11 | 4417-035-1050 | 3.05 ppm |
2017-04-11 | 4417-036-1015 | 1.36 ppm |
2017-04-11 | 4417-051-0840 | 3.48 ppm |
2017-04-11 | 4417-087-0920 | 3.10 ppm |
2017-04-13 | 4417-063-1150 | 1.42 ppm |
2017-04-13 | 4417-063-1205 | 1.41 ppm |
2017-05-09 | 4417-086-1125 | 1.49 ppm |
2017-05-09 | 4417-086-1140 | 1.49 ppm |
2017-06-26 | 4417-053-1020 | 3.87 ppm |
2017-07-05 | 4417-086-1140 | 1.53 ppm |
2017-07-10 | 4417-053-1120 | 3.98 ppm |
2017-07-10 | 4417-096-1015 | 1.92 ppm |
2017-10-17 | 4417-063-1005 | 1.08 ppm |
2017-10-17 | 4417-063-1015 | 1.09 ppm |
2018-01-02 | 4417-035-1015 | 2.40 ppm |
2018-01-02 | 4417-036-1035 | 1.34 ppm |
2018-01-02 | 4417-037-1050 | 1.15 ppm |
2018-01-02 | 4417-088-0935 | 2.11 ppm |
2018-01-02 | 4417-096-0955 | 1.72 ppm |
2018-01-10 | 4417-049-0805 | 4.35 ppm |
2018-01-11 | 4417-086-0820 | 1.56 ppm |
2018-02-06 | 4417-086-0930 | 1.64 ppm |
2018-02-06 | 4417-086-0945 | 1.63 ppm |
2018-02-26 | 4417-086-1205 | 1.69 ppm |
2018-04-02 | 4417-033-1305 | 3.46 ppm |
2018-04-02 | 4417-035-1050 | 2.29 ppm |
2018-04-02 | 4417-037-1105 | 1.15 ppm |
2018-04-02 | 4417-062-1215 | 3.86 ppm |
2018-04-02 | 4417-088-1020 | 2.09 ppm |
2018-04-02 | 4417-096-1035 | 1.78 ppm |
2018-04-03 | 4417-051-1045 | 3.36 ppm |
2018-04-03 | 4417-053-1115 | 3.89 ppm |
2018-04-03 | 4417-058-0910 | 3.60 ppm |
2018-04-03 | 4417-063-1310 | 1.51 ppm |
2018-04-03 | 4417-086-1200 | 1.86 ppm |
2018-04-03 | 4417-087-1020 | 3.05 ppm |
2018-04-03 | 4417-090-0945 | 2.69 ppm |
2018-07-10 | 4417-050-1030 | 2.08 ppm |
2018-07-23 | 4417-033-0900 | 3.39 ppm |
2018-07-23 | 4417-049-1005 | 2.34 ppm |
2018-07-23 | 4417-063-1055 | 1.56 ppm |
2018-07-23 | 4417-086-0930 | 1.66 ppm |
2018-07-25 | 4417-062-0910 | 3.85 ppm |
2018-08-22 | 4417-063-0830 | 1.52 ppm |
2018-08-22 | 4417-086-0850 | 1.59 ppm |
2018-09-06 | 4417-050-0900 | 2.10 ppm |
2018-10-01 | 4417-049-1030 | 5.38 ppm |
2018-10-01 | 4417-063-1140 | 1.53 ppm |
2018-10-01 | 4417-086-1110 | 1.70 ppm |
2018-10-25 | 4417-049-0925 | 5.28 ppm |
2018-10-25 | 4417-049-0935 | 5.29 ppm |
2018-10-25 | 4417-058-1000 | 3.11 ppm |
2018-10-25 | 4417-058-1010 | 3.15 ppm |
2018-10-25 | 4417-063-0850 | 1.55 ppm |
2018-10-25 | 4417-063-0900 | 1.57 ppm |
2019-01-03 | 4417-049-1025 | 4.66 ppm |
2019-01-03 | 4417-058-1105 | 3.36 ppm |
2019-01-03 | 4417-063-0950 | 1.61 ppm |
2019-01-03 | 4417-086-0905 | 1.90 ppm |
2019-01-03 | 4417-090-0810 | 2.67 ppm |
2019-01-08 | 4417-033-0950 | 3.19 ppm |
2019-01-08 | 4417-051-1025 | 3.09 ppm |
2019-01-10 | 4417-035-0910 | 1.98 ppm |
2019-01-10 | 4417-037-0930 | 1.22 ppm |
2019-01-10 | 4417-088-0840 | 1.98 ppm |
2019-01-10 | 4417-096-0855 | 1.66 ppm |
2019-03-19 | 4417-110-0910 | 2.50 ppm |
2019-03-28 | 4417-050-1445 | 1.86 ppm |
2019-04-09 | 4417-063-0955 | 1.53 ppm |
2019-04-09 | 4417-087-1230 | 3.06 ppm |
2019-04-10 | 4417-050-0900 | 1.98 ppm |
2019-04-10 | 4417-062-1150 | 3.60 ppm |
2019-04-10 | 4417-096-0955 | 1.64 ppm |
2019-04-10 | 4417-110-1310 | 2.45 ppm |
2019-05-13 | 4417-049-0930 | 2.28 ppm |
2019-05-13 | 4417-053-1130 | 3.53 ppm |
2019-05-13 | 4417-110-1155 | 2.49 ppm |
2019-05-13 | 4417-110-1205 | 2.54 ppm |
2019-05-21 | 4417-110-1115 | 2.57 ppm |
2019-08-06 | 4417-049-1030 | 2.32 ppm |
2019-08-06 | 4417-110-1215 | 2.42 ppm |
2019-10-08 | 4417-049-1155 | 4.78 ppm |
2019-10-08 | 4417-110-1320 | 2.40 ppm |