Nitrate
Truckee Meadows Water Authority
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.
294
Samples
0
Samples exceeding legal limit (MCL)
199
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 | 1.16 ppm | 30 | 23 | ND - 5.90 ppm |
| 2015 | 0.954 ppm | 34 | 20 | ND - 5.48 ppm |
| 2016 | 0.693 ppm | 59 | 27 | ND - 4.14 ppm |
| 2017 | 0.154 ppm | 60 | 35 | ND - 6.61 ppm |
| 2018 | 1.03 ppm | 56 | 47 | ND - 7.75 ppm |
| 2019 | 1.03 ppm | 55 | 49 | ND - 3.73 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 |
|---|---|---|
| 2014-04-22 | 0414-14I | 1.40 ppm |
| 2014-04-22 | 0414-13-I | 0.250 ppm |
| 2014-04-22 | 0414-12-I | 1.10 ppm |
| 2014-04-23 | 0414-17-I | 0.200 ppm |
| 2014-04-23 | 0414-16-I | ND |
| 2014-04-29 | 0414-27 | 0.670 ppm |
| 2014-04-29 | 0414-28 | 0.1000 ppm |
| 2014-05-17 | 0614-13-I | ND |
| 2014-06-09 | 0614-06-I | ND |
| 2014-06-09 | 0614-07-I | ND |
| 2014-06-17 | 0614-11-I | 0.300 ppm |
| 2014-06-17 | 0614-10-I | 0.600 ppm |
| 2014-06-17 | 0614-09-I | 0.500 ppm |
| 2014-06-17 | 0614-12-I | 2.50 ppm |
| 2014-06-17 | 0614-13-N | ND |
| 2014-06-17 | 0514-14-I | 0.500 ppm |
| 2014-06-24 | 0614-28-I | 1.50 ppm |
| 2014-06-24 | 0614-26-I | 3.50 ppm |
| 2014-07-29 | 0714-43 | 0.950 ppm |
| 2014-07-29 | 0714-42 | ND |
| 2014-07-29 | 0714-35-N | 1.56 ppm |
| 2014-07-29 | 0714-41 | 3.67 ppm |
| 2014-07-29 | 0714-40 | 1.65 ppm |
| 2014-09-02 | 0914-09 | 2.97 ppm |
| 2014-09-02 | 0914-10 | 2.28 ppm |
| 2014-09-02 | 0914-11 | 1.78 ppm |
| 2014-09-10 | 0914-71 | 0.660 ppm |
| 2014-09-23 | 0914-200 | ND |
| 2014-09-23 | 0914-201 | 0.310 ppm |
| 2014-10-16 | 1014-27-N | 5.90 ppm |
| 2015-06-08 | 1506017-01 | ND |
| 2015-06-08 | 1506018-01 | ND |
| 2015-06-11 | 1506027-01 | 0.868 ppm |
| 2015-06-17 | 1506035-01 | 1.01 ppm |
| 2015-06-17 | 1506036-01 | ND |
| 2015-06-17 | 1506037-01 | ND |
| 2015-06-17 | 1506038-01 | ND |
| 2015-06-18 | 1506049-01 | 1.01 ppm |
| 2015-06-18 | 1506047-01 | 2.22 ppm |
| 2015-06-18 | 1506045-01 | 1.59 ppm |
| 2015-06-18 | 1506044-01 | ND |
| 2015-06-18 | 1506043-01 | ND |
| 2015-06-18 | 1506054-01 | 0.543 ppm |
| 2015-06-23 | 1506055-01 | 1.70 ppm |
| 2015-06-23 | 1506056-01 | ND |
| 2015-06-23 | 1506046-01 | ND |
| 2015-06-23 | 1506060-01 | ND |
| 2015-06-23 | 1506061-01 | 0.406 ppm |
| 2015-06-23 | 1507003-01 | ND |
| 2015-08-26 | 1512015-01 | 0.926 ppm |
| 2015-08-26 | 1508071-01 | 4.11 ppm |
| 2015-08-26 | 1508070-01 | 1.87 ppm |
| 2015-08-26 | 0.926 ppm | |
| 2015-09-15 | 1510006-01 | 1.24 ppm |
| 2015-09-15 | 1510007-01 | 1.09 ppm |
| 2015-09-15 | 1512014-01 | 0.760 ppm |
| 2015-09-15 | 1512016-01 | 0.897 ppm |
| 2015-09-15 | 1512017-01 | 2.37 ppm |
| 2015-09-15 | 1510005-01 | ND |
| 2015-09-15 | 2.37 ppm | |
| 2015-09-15 | ND | |
| 2015-09-15 | ND | |
| 2015-10-08 | 1510018-01 | 1.04 ppm |
| 2015-10-08 | 1510017-01 | 5.48 ppm |
| 2016-02-24 | 1602019-01 | ND |
| 2016-04-12 | 1604011-01 | ND |
| 2016-05-31 | 1605028-01 | ND |
| 2016-05-31 | 1605025-01 | ND |
| 2016-05-31 | 1605026-01 | ND |
| 2016-05-31 | 1605027-01 | ND |
| 2016-06-01 | 1606001-01 | ND |
| 2016-06-06 | 1606010-01 | 1.30 ppm |
| 2016-06-07 | 1606018-01 | 1.32 ppm |
| 2016-06-07 | 1606019-01 | ND |
| 2016-06-09 | 1606023-01 | ND |
| 2016-06-09 | 1606024-01 | 0.990 ppm |
| 2016-06-09 | 1606025-01 | ND |
| 2016-06-09 | 1606026-01 | ND |
| 2016-06-09 | 1606027-01 | ND |
| 2016-06-09 | 1606022-01 | ND |
| 2016-06-28 | 1606055-01 | 0.790 ppm |
| 2016-06-28 | 1606056-01 | 0.770 ppm |
| 2016-06-28 | 1606058-01 | ND |
| 2016-06-28 | 1606059-01 | ND |
| 2016-06-28 | 1606057-01 | ND |
| 2016-06-28 | 1606054-01 | ND |
| 2016-06-28 | 1606053-01 | ND |
| 2016-06-28 | 1606052-01 | ND |
| 2016-07-19 | 1607023-01 | 0.990 ppm |
| 2016-07-19 | 1607024-01 | ND |
| 2016-07-19 | 1607025-01 | ND |
| 2016-07-20 | 1607039-01 | ND |
| 2016-07-20 | 1607033-01 | 2.20 ppm |
| 2016-07-20 | 1607035-01 | 2.58 ppm |
| 2016-07-20 | 1607038-01 | ND |
| 2016-08-04 | 1608010-01 | 0.980 ppm |
| 2016-08-04 | 1608011-01 | 1.43 ppm |
| 2016-08-04 | 1608012-01 | ND |
| 2016-08-04 | 1608013-01 | ND |
| 2016-08-15 | 1608022-01 | 0.860 ppm |
| 2016-08-15 | 1608023-01 | 2.24 ppm |
| 2016-08-15 | 1608024-01 | 1.30 ppm |
| 2016-08-15 | 1608025-01 | 1.92 ppm |
| 2016-08-18 | 1608030-01 | 1.05 ppm |
| 2016-08-18 | 1608030-02 | 1.03 ppm |
| 2016-08-18 | 1608030-03 | 0.980 ppm |
| 2016-08-18 | 1608030-04 | ND |
| 2016-08-24 | 1608035-01 | 1.56 ppm |
| 2016-08-24 | 1608034-01 | ND |
| 2016-08-24 | 1608033-01 | ND |
| 2016-08-24 | 1608037-01 | ND |
| 2016-08-25 | 1608036-01 | ND |
| 2016-08-25 | 1608039-01 | ND |
| 2016-08-30 | 1608047-01 | ND |
| 2016-08-30 | 1608046-01 | 2.23 ppm |
| 2016-09-14 | 1609015-01 | 3.02 ppm |
| 2016-09-14 | 1609016-01 | 2.18 ppm |
| 2016-09-22 | 1609024-01 | 1.11 ppm |
| 2016-10-11 | 1610010-01 | 4.14 ppm |
| 2016-10-25 | 1610041-01 | 1.52 ppm |
| 2016-10-26 | 1610045-01 | 0.780 ppm |
| 2016-11-01 | 1610050-01 | 1.52 ppm |
| 2016-12-20 | 1701003-01WET | 0.120 ppm |
| 2017-01-11 | 1701009-01 | ND |
| 2017-01-11 | 1701007-01 | 1.05 ppm |
| 2017-01-11 | 1701008-01 | 1.22 ppm |
| 2017-02-07 | 1702004-01 | 0.780 ppm |
| 2017-02-17 | 1702012-01 | 2.59 ppm |
| 2017-03-08 | 1703010-01 | 1.28 ppm |
| 2017-03-08 | 1703009-01 | 0.880 ppm |
| 2017-03-08 | 1703008-01 | 1.000 ppm |
| 2017-03-08 | 1703011-01 | ND |
| 2017-04-20 | 1704011-01 | ND |
| 2017-05-02 | 1705003-01 | ND |
| 2017-05-02 | 1705004-01 | ND |
| 2017-05-02 | 1705001-01 | ND |
| 2017-05-02 | 1705002-01 | ND |
| 2017-05-02 | 1705005-01 | ND |
| 2017-05-03 | 1705010-01 | 0.770 ppm |
| 2017-05-03 | 1705009-01 | 0.970 ppm |
| 2017-05-03 | 1705013-01 | 0.840 ppm |
| 2017-05-03 | 1705012-01 | ND |
| 2017-05-15 | 1705023-01 | ND |
| 2017-05-15 | 1705025-01 | ND |
| 2017-05-15 | 1705024-01 | ND |
| 2017-05-16 | 1705027-01 | 2.59 ppm |
| 2017-05-16 | 1705028-01 | 1.71 ppm |
| 2017-05-19 | 1705035-01 | ND |
| 2017-05-19 | 1705036-01 | 0.910 ppm |
| 2017-05-25 | 1705041-01 | ND |
| 2017-05-31 | 1705046-01 | ND |
| 2017-05-31 | 1705045-01 | ND |
| 2017-05-31 | 1705044-01 | ND |
| 2017-06-01 | 0.154 ppm* | |
| 2017-06-02 | 1706005-01 | 3.34 ppm |
| 2017-06-02 | 1706004-01 | ND |
| 2017-06-14 | 1706017-01 | 0.970 ppm |
| 2017-06-27 | 1706033-01 | ND |
| 2017-06-27 | 1706034-01 | ND |
| 2017-07-11 | 1707007-01 | ND |
| 2017-07-11 | 1707003-01 | 1.79 ppm |
| 2017-07-11 | 1707002-01 | 2.78 ppm |
| 2017-07-11 | 1707005-01 | 0.910 ppm |
| 2017-07-11 | 1707004-01 | 2.12 ppm |
| 2017-07-18 | 1707020-01 | 1.49 ppm |
| 2017-07-18 | 1707021-01 | 0.810 ppm |
| 2017-07-18 | 1707022-01 | ND |
| 2017-07-18 | 1707024-01 | 1.75 ppm |
| 2017-08-16 | 1708013-01 | 1.50 ppm |
| 2017-08-16 | 1708014-01 | 0.880 ppm |
| 2017-08-29 | 1708026-01 | 1.35 ppm |
| 2017-08-29 | 1708028-01 | 5.04 ppm |
| 2017-08-29 | 1708027-01 | 0.750 ppm |
| 2017-08-29 | 1708029-01 | 2.46 ppm |
| 2017-08-29 | 1708030-01 | ND |
| 2017-08-29 | 1708025-01 | 0.980 ppm |
| 2017-10-12 | 1710022-01 | ND |
| 2017-10-25 | 1710035-01 | 6.61 ppm |
| 2017-10-30 | 1710046-01 | ND |
| 2017-10-30 | 1710047-01 | 1.92 ppm |
| 2017-10-30 | 1710042-01 | 1.80 ppm |
| 2017-10-31 | 1710052-01 | 0.790 ppm |
| 2017-10-31 | 1710057-01 | 0.950 ppm |
| 2018-01-23 | 1801009-01 | 1.17 ppm |
| 2018-01-23 | 1801010-01 | 0.940 ppm |
| 2018-01-23 | 1801013-01 | ND |
| 2018-02-01 | 1802001-01 | 1.53 ppm |
| 2018-02-01 | 1802003-01 | 0.880 ppm |
| 2018-02-06 | 1802006-01 | 1.15 ppm |
| 2018-03-09 | 1803004-01 | 0.440 ppm |
| 2018-03-13 | 1803009-01 | ND |
| 2018-03-27 | 1803020-01 | 2.03 ppm |
| 2018-04-04 | 1804005-01 | ND |
| 2018-04-09 | 1804011-01 | 2.64 ppm |
| 2018-04-09 | 1804012-01 | 0.340 ppm |
| 2018-04-10 | 1804035-01 | ND |
| 2018-04-11 | 1804017-01 | 0.520 ppm |
| 2018-04-11 | 1804018-01 | 1.08 ppm |
| 2018-04-11 | 1804019-01 | 0.810 ppm |
| 2018-04-16 | 1804038-01 | 1.30 ppm |
| 2018-04-24 | 1804027-01 | ND |
| 2018-04-25 | 1804025-01 | ND |
| 2018-04-26 | 1804044-01 | 1.79 ppm |
| 2018-05-01 | 1805002-01 | 0.370 ppm |
| 2018-05-01 | 1805003-01 | 0.510 ppm |
| 2018-05-01 | 1805004-01 | 0.830 ppm |
| 2018-05-01 | 1805005-01 | 0.880 ppm |
| 2018-05-01 | 1805006-01 | 0.470 ppm |
| 2018-05-02 | 1805008-01WET | 0.480 ppm |
| 2018-05-02 | 1805009-01WET | 0.250 ppm |
| 2018-05-08 | 1805020-01 | 1.29 ppm |
| 2018-05-08 | 1805021-01 | 0.680 ppm |
| 2018-05-08 | 1805022-01 | 1.60 ppm |
| 2018-05-09 | 1805027-01 | 0.510 ppm |
| 2018-05-09 | 1805028-01 | 0.820 ppm |
| 2018-05-09 | 1805029-01 | 0.820 ppm |
| 2018-05-21 | 1805043-01 | 1.45 ppm |
| 2018-05-23 | 1805041-01 | 0.470 ppm |
| 2018-05-24 | 1805048-01 | ND |
| 2018-06-05 | 1806007-01 | ND |
| 2018-06-05 | 1806008-01 | 2.04 ppm |
| 2018-06-05 | 1806009-01 | 0.460 ppm |
| 2018-06-28 | 1806021-01 | 0.600 ppm |
| 2018-07-11 | 1807014-01 | 1.86 ppm |
| 2018-07-11 | 1807015-01 | 2.84 ppm |
| 2018-07-18 | 1807017-01 | 1.31 ppm |
| 2018-07-18 | 1807019-01 | 2.51 ppm |
| 2018-07-19 | 1807021-01 | 7.75 ppm |
| 2018-07-24 | 1807025-01 | 1.97 ppm |
| 2018-07-26 | 1807027-01 | 0.340 ppm |
| 2018-08-09 | 1808015-01 | 2.18 ppm |
| 2018-08-10 | 1808021-01 | ND |
| 2018-08-10 | 1808022-01 | 1.10 ppm |
| 2018-10-29 | 1810040-01WET | 0.670 ppm |
| 2018-11-14 | 1811008-02 | 0.937 ppm |
| 2018-11-14 | 1811009-02 | 1.02 ppm |
| 2018-11-14 | 1811010-02 | 0.966 ppm |
| 2018-11-14 | 1811011-02 | 0.375 ppm |
| 2018-11-14 | 1811012-02 | 0.484 ppm |
| 2019-01-09 | 1901012-02 | 0.395 ppm |
| 2019-01-09 | 1901013-02 | 0.868 ppm |
| 2019-01-16 | 1901011-02 | ND |
| 2019-01-16 | 1901017-02 | 0.625 ppm |
| 2019-01-22 | 1901010-02 | ND |
| 2019-02-05 | 1902001-01 | ND |
| 2019-02-26 | 1902019-01 | ND |
| 2019-02-27 | 1902020-01 | 0.716 ppm |
| 2019-02-27 | 1902021-01 | 0.716 ppm |
| 2019-04-10 | 1904008-01 | 0.376 ppm |
| 2019-04-10 | 1904009-01 | 0.737 ppm |
| 2019-04-10 | 1904010-01 | 0.378 ppm |
| 2019-04-16 | 1904015-01 | ND |
| 2019-04-25 | 1904018-01 | 0.344 ppm |
| 2019-04-25 | 1904019-01 | 1.30 ppm |
| 2019-04-25 | 1904020-01 | 0.863 ppm |
| 2019-04-25 | 1904021-01 | 1.60 ppm |
| 2019-04-25 | 1904022-01 | 0.938 ppm |
| 2019-04-25 | 1904023-01 | 1.82 ppm |
| 2019-04-25 | 1904024-01 | 0.664 ppm |
| 2019-05-02 | 1905001-01 | 0.805 ppm |
| 2019-05-02 | 1905002-01 | 1.76 ppm |
| 2019-05-07 | 1905007-01 | 0.539 ppm |
| 2019-05-07 | 1905008-01 | 0.451 ppm |
| 2019-05-20 | 1905019-02WET | 0.910 ppm |
| 2019-05-29 | 1905027-01WET | 0.650 ppm |
| 2019-05-30 | 1905029-01WET | 0.710 ppm |
| 2019-06-19 | 1906011-01 | 1.63 ppm |
| 2019-06-19 | 1906012-01 | 1.03 ppm |
| 2019-06-19 | 1906013-01 | 1.58 ppm |
| 2019-06-19 | 1906014-01 | 0.739 ppm |
| 2019-06-19 | 1906015-01 | 1.50 ppm |
| 2019-06-19 | 1906016-01 | 3.73 ppm |
| 2019-06-26 | 1906019-01 | 1.05 ppm |
| 2019-06-26 | 1906020-01 | 1.74 ppm |
| 2019-07-09 | 1907014-02WET | 0.380 ppm |
| 2019-07-09 | 1907018-01WET | 0.470 ppm |
| 2019-07-17 | 1907028-01 | 0.614 ppm |
| 2019-07-25 | 1907043-01 | ND |
| 2019-07-25 | 1907044-01 | 0.573 ppm |
| 2019-07-25 | 1907045-01 | 0.480 ppm |
| 2019-07-29 | 1907046-01 | 3.35 ppm |
| 2019-07-30 | 1907048-01 | 2.60 ppm |
| 2019-08-06 | 1908002-01 | 2.26 ppm |
| 2019-08-06 | 1908004-01 | 2.22 ppm |
| 2019-08-06 | 1908007-01 | 1.56 ppm |
| 2019-08-14 | 1907036-02 | 2.85 ppm |
| 2019-08-14 | 1907038-02 | 1.99 ppm |
| 2019-08-27 | 1908023-01 | 0.936 ppm |
| 2019-08-27 | 1908024-01 | 1.02 ppm |
| 2019-08-27 | 1908025-01 | 0.504 ppm |
| 2019-08-29 | 1908026-01 | 1.60 ppm |
| 2019-09-18 | 1909007-01 | 1.14 ppm |
| 2019-10-01 | 1910005-01 | 0.571 ppm |
| 2019-10-08 | 1910021-01 | 0.620 ppm |
* Sample result is taken from the system's CCR report.