Nitrate
Carson City Public Works
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.
343
Samples
0
Samples exceeding legal limit (MCL)
298
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2014 | 2.07 ppm | 56 | 50 | ND - 7.46 ppm |
| 2015 | 2.37 ppm | 57 | 48 | ND - 8.50 ppm |
| 2016 | 1.82 ppm | 47 | 41 | ND - 6.50 ppm |
| 2017 | 1.86 ppm | 58 | 52 | ND - 5.50 ppm |
| 2018 | 3.30 ppm | 69 | 63 | ND - 7.30 ppm |
| 2019 | 2.84 ppm | 56 | 46 | ND - 7.20 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 |
|---|---|---|
| 2014-01-13 | 140005 | 1.52 ppm |
| 2014-01-14 | 140012 | 1.38 ppm |
| 2014-01-28 | 140027 | 0.680 ppm |
| 2014-02-24 | 140048 | 0.680 ppm |
| 2014-02-28 | 140042 | 1.12 ppm |
| 2014-03-26 | 140096 | 1.59 ppm |
| 2014-03-26 | 201403270180 | 1.000 ppm |
| 2014-04-28 | 140132 | 2.35 ppm |
| 2014-04-29 | 140138 | 4.83 ppm |
| 2014-04-29 | 140137 | 0.600 ppm |
| 2014-05-21 | 140166 | 0.660 ppm |
| 2014-05-27 | 201405280593-N | ND |
| 2014-05-28 | 140173 | 1.58 ppm |
| 2014-06-18 | 140207 | 1.61 ppm |
| 2014-06-19 | 140211 | 0.710 ppm |
| 2014-06-23 | 140212 | 7.46 ppm |
| 2014-06-24 | 201406250107 | 0.530 ppm |
| 2014-06-24 | 201406250106 | 2.80 ppm |
| 2014-06-24 | 201406250103 | 2.40 ppm |
| 2014-06-24 | 201406250104 | 6.70 ppm |
| 2014-06-24 | 201406250105 | 0.940 ppm |
| 2014-06-24 | 201406250108 | 0.330 ppm |
| 2014-06-24 | 201406250102 | 0.250 ppm |
| 2014-06-25 | 201406270015 | ND |
| 2014-06-25 | 201406270017 | 2.00 ppm |
| 2014-06-25 | 201406270018 | ND |
| 2014-06-25 | 201406270016 | 0.220 ppm |
| 2014-06-25 | 140218 | 6.19 ppm |
| 2014-06-25 | 201406270012 | 1.60 ppm |
| 2014-06-25 | 201406270013 | 0.380 ppm |
| 2014-06-25 | 201406270011 | 0.510 ppm |
| 2014-06-25 | 201406270014 | 0.140 ppm |
| 2014-07-01 | 201407020381 | 1.10 ppm |
| 2014-07-01 | 201407020382 | 2.20 ppm |
| 2014-07-01 | 201407020380 | ND |
| 2014-07-02 | 1407076-001 | 4.20 ppm |
| 2014-07-08 | 201407090717 | 3.20 ppm |
| 2014-07-09 | 1407249-001 | 4.00 ppm |
| 2014-07-16 | 1407431-001 | 3.90 ppm |
| 2014-07-23 | 1407627-001 | 3.90 ppm |
| 2014-07-30 | 1407798-001 | 3.90 ppm |
| 2014-07-30 | 201407310264 | 1.70 ppm |
| 2014-07-30 | 1407796-001 | 1.20 ppm |
| 2014-07-30 | 1407797-001 | 0.420 ppm |
| 2014-08-06 | 1408149-001 | 3.70 ppm |
| 2014-08-13 | 1408356-001 | 3.70 ppm |
| 2014-08-20 | 1408543-001 | 3.80 ppm |
| 2014-08-20 | 1408542-001 | 0.510 ppm |
| 2014-08-27 | 1408737-001 | 3.80 ppm |
| 2014-09-03 | 1409065-001 | 3.80 ppm |
| 2014-09-04 | 201409050275 | ND |
| 2014-09-10 | 1409292-001 | 3.80 ppm |
| 2014-09-17 | 1409500-001 | 3.80 ppm |
| 2014-09-23 | 1409696-001 | ND |
| 2014-10-29 | 1410796-001 | 5.30 ppm |
| 2014-12-17 | 1412550-001 | 1.40 ppm |
| 2015-03-26 | 201503270323-N | 6.90 ppm |
| 2015-04-21 | 1504596-001-N | 0.350 ppm |
| 2015-05-18 | 1505412-001 | 8.50 ppm |
| 2015-05-19 | 1505437-001 | 8.00 ppm |
| 2015-05-20 | 1505465-001 | 7.50 ppm |
| 2015-05-27 | 150527-005 | 4.70 ppm |
| 2015-05-27 | 150527-001 | 0.310 ppm |
| 2015-06-03 | 1506119-001 | 4.50 ppm |
| 2015-06-10 | 1506297-001 | 4.00 ppm |
| 2015-06-17 | 1506480-001 | 4.10 ppm |
| 2015-06-24 | 1506697-001 | 0.450 ppm |
| 2015-06-24 | 1506696-001 | 4.20 ppm |
| 2015-06-29 | 201506300124-IOC | 0.000450 ppm |
| 2015-06-29 | 201506300177-IOC | ND |
| 2015-06-30 | 1507049-001 | 1.70 ppm |
| 2015-07-01 | 1507048-002 | 4.20 ppm |
| 2015-07-08 | 1507238-001 | 4.10 ppm |
| 2015-07-14 | 201507150299 | ND |
| 2015-07-15 | 1507413-001 | 4.20 ppm |
| 2015-07-15 | 201507160441 | 2.30 ppm |
| 2015-07-15 | 201507160327 | 0.400 ppm |
| 2015-07-15 | 201507160255 | ND |
| 2015-07-21 | 201507220179 | ND |
| 2015-07-22 | 1507595-001 | 4.20 ppm |
| 2015-07-27 | 201507280085 | ND |
| 2015-07-27 | 201507280084 | 1.90 ppm |
| 2015-07-27 | 201507280083 | ND |
| 2015-07-27 | 201507280086 | 0.360 ppm |
| 2015-07-29 | 201507300215 | 0.400 ppm |
| 2015-07-29 | 201507300214 | 0.530 ppm |
| 2015-07-29 | 201507300213 | 2.40 ppm |
| 2015-07-29 | 1507777-001 | 4.10 ppm |
| 2015-07-29 | 201507300212 | 0.830 ppm |
| 2015-07-29 | 201507300216 | 2.00 ppm |
| 2015-07-29 | 201507300209 | 0.280 ppm |
| 2015-08-03 | 201508040410-N | 3.00 ppm |
| 2015-08-05 | 1508124-002 | 4.30 ppm |
| 2015-08-10 | 201508110263 | ND |
| 2015-08-12 | 1508330-007 | 4.00 ppm |
| 2015-08-12 | 1508331-001 | 0.250 ppm |
| 2015-08-13 | 201508140259 | 0.780 ppm |
| 2015-08-13 | 201508140254 | 0.430 ppm |
| 2015-08-19 | 1508498-001 | 4.30 ppm |
| 2015-08-26 | 1508679-001 | 4.40 ppm |
| 2015-09-15 | 201509160733 | ND |
| 2015-09-15 | 201509160729 | 5.20 ppm |
| 2015-09-15 | 201509160734 | 1.20 ppm |
| 2015-09-15 | 201509020134 | 0.870 ppm |
| 2015-09-23 | 1509655-001 | ND |
| 2015-09-23 | 201509240291 | 1.000 ppm |
| 2015-09-23 | 1509654-001 | 0.360 ppm |
| 2015-10-07 | 1510213-001 | 5.80 ppm |
| 2015-10-21 | 1510593-001 | 1.40 ppm |
| 2015-10-21 | 1510592-001 | 0.670 ppm |
| 2015-11-18 | 1511475-001 | 0.720 ppm |
| 2015-12-09 | 1512296-001 | 0.620 ppm |
| 2015-12-16 | 201512170135 | 8.30 ppm |
| 2016-01-20 | 1601433-001 | 0.300 ppm |
| 2016-04-20 | 1604522-001 | ND |
| 2016-06-15 | 160615-002 | 4.60 ppm |
| 2016-06-15 | 160615-001 | 0.630 ppm |
| 2016-06-16 | 160616-001 | 4.20 ppm |
| 2016-06-22 | 201606230265 | ND |
| 2016-06-22 | 201606230271 | 0.810 ppm |
| 2016-06-23 | 160623-003 | 5.00 ppm |
| 2016-06-23 | 160623-007 | 1.20 ppm |
| 2016-06-28 | 201606290224 | ND |
| 2016-06-28 | 201606290218 | ND |
| 2016-06-28 | 201606290223 | ND |
| 2016-06-28 | 201606290222 | 1.80 ppm |
| 2016-06-28 | 201606290220 | 0.370 ppm |
| 2016-06-28 | 201606290219 | 0.400 ppm |
| 2016-06-28 | 201606290221 | 1.20 ppm |
| 2016-06-30 | 1607130-001 | 4.60 ppm |
| 2016-07-13 | 160713-009 | 2.20 ppm |
| 2016-07-13 | 160713-010 | 4.40 ppm |
| 2016-07-13 | 160713-012 | 1.30 ppm |
| 2016-07-13 | 160713-007 | 0.570 ppm |
| 2016-07-21 | 160721-001 | 4.20 ppm |
| 2016-07-28 | 160728-003 | 4.30 ppm |
| 2016-08-10 | 201608110350 | 1.90 ppm |
| 2016-08-10 | 201608120041 | 0.200 ppm |
| 2016-08-10 | 201608120037 | 0.510 ppm |
| 2016-08-10 | 201608120040 | 3.00 ppm |
| 2016-08-10 | 201608120039 | 1.40 ppm |
| 2016-08-10 | 201608110453 | 0.270 ppm |
| 2016-08-10 | 201608120038 | ND |
| 2016-08-11 | 1060811_002 | 2.00 ppm |
| 2016-08-11 | 160811_001 | 3.80 ppm |
| 2016-08-11 | 160811_006 | 1.10 ppm |
| 2016-08-15 | 160815_001 | 4.10 ppm |
| 2016-08-16 | 201608170231 | 0.520 ppm |
| 2016-08-16 | 201608170233 | 4.70 ppm |
| 2016-08-16 | 201608170232 | 3.60 ppm |
| 2016-09-07 | 160907_005 | 0.600 ppm |
| 2016-09-21 | 160921-_009 | 2.50 ppm |
| 2016-09-21 | 160921-007 | 1.30 ppm |
| 2016-09-21 | 160921_008 | 1.20 ppm |
| 2016-09-21 | 1609658-002 | 0.950 ppm |
| 2016-10-19 | 1610613-001 | 0.790 ppm |
| 2016-11-09 | 161109_005 | 1.40 ppm |
| 2016-11-09 | 161109_006 | 0.500 ppm |
| 2016-12-22 | 1612713-001 | 6.50 ppm |
| 2016-12-28 | 1612810-001 | 0.680 ppm |
| 2017-01-31 | 1701686-001 | 0.380 ppm |
| 2017-02-15 | 170215-004 | 0.400 ppm |
| 2017-03-21 | 170321-020 | 0.450 ppm |
| 2017-04-26 | 170426_001 | 0.800 ppm |
| 2017-05-15 | 201705160867 | 0.160 ppm |
| 2017-05-15 | 201705160571 | ND |
| 2017-05-15 | 201705160632 | 0.500 ppm |
| 2017-05-15 | 201705160541 | 1.000 ppm |
| 2017-05-16 | 201705170491 | ND |
| 2017-05-16 | 201705170304 | 0.340 ppm |
| 2017-05-16 | 201705170782 | 0.270 ppm |
| 2017-05-17 | 1705493-001 | 0.320 ppm |
| 2017-05-23 | 201705240962 | 0.940 ppm |
| 2017-05-23 | 201705240769 | ND |
| 2017-05-25 | 201705260591 | 4.70 ppm |
| 2017-05-25 | 201705260596 | 2.80 ppm |
| 2017-06-13 | 201706140424 | 0.920 ppm |
| 2017-06-14 | 1706412-001 | 2.30 ppm |
| 2017-06-14 | 1706413-001 | 5.20 ppm |
| 2017-06-14 | 1706415-001 | 5.50 ppm |
| 2017-06-14 | 1706414-001 | 0.750 ppm |
| 2017-07-05 | 1707051-001 | 4.50 ppm |
| 2017-07-05 | 201707060865 | 3.50 ppm |
| 2017-07-12 | 170712-008 | 2.40 ppm |
| 2017-07-12 | 170712-007 | 1.40 ppm |
| 2017-07-19 | 170719-15 | 0.730 ppm |
| 2017-07-20 | 201707210331 | 2.90 ppm |
| 2017-07-20 | 201707210328 | 4.50 ppm |
| 2017-07-25 | 201707260765 | 1.90 ppm |
| 2017-07-25 | 201707260764 | 3.50 ppm |
| 2017-07-26 | 201707260490 | 2.10 ppm |
| 2017-07-27 | 201707280313 | ND |
| 2017-08-01 | 201708020897 | 0.410 ppm |
| 2017-08-01 | 201708020922 | 0.520 ppm |
| 2017-08-01 | 201708021373 | ND |
| 2017-08-01 | 201708021436 | ND |
| 2017-08-23 | 170823_002 | 0.420 ppm |
| 2017-08-24 | 170824_001 | 4.70 ppm |
| 2017-08-28 | 201708290217 | 1.90 ppm |
| 2017-08-29 | 170829_002 | 4.60 ppm |
| 2017-09-06 | 170906_009-1 | 4.70 ppm |
| 2017-09-06 | 170906_009 | 0.500 ppm |
| 2017-09-13 | 170913_002 | 2.70 ppm |
| 2017-09-13 | 170913_001 | 4.80 ppm |
| 2017-09-13 | 170913_003 | 4.30 ppm |
| 2017-09-27 | 170927-003 | 2.40 ppm |
| 2017-10-11 | 171011-009 | 2.90 ppm |
| 2017-10-11 | 171011-00 | 1.40 ppm |
| 2017-10-16 | 201710170390 | 1.10 ppm |
| 2017-10-25 | 1710819-001 | 0.830 ppm |
| 2017-11-08 | 1711317-002 | 2.70 ppm |
| 2017-11-08 | 1711317-001 | 3.10 ppm |
| 2017-11-20 | 1711685-001 | 0.930 ppm |
| 2017-12-13 | 1712431-002 | 3.30 ppm |
| 2017-12-13 | 1712434-001 | 0.600 ppm |
| 2017-12-13 | 1712431-001 | 1.50 ppm |
| 2017-12-13 | 1712436-001 | 1.000 ppm |
| 2017-12-21 | 1712678-001 | 1.20 ppm |
| 2018-01-10 | 1801353-001 | 2.00 ppm |
| 2018-03-14 | 1803481-001 | 6.00 ppm |
| 2018-03-21 | 1803667-001 | 0.420 ppm |
| 2018-03-28 | 1803879-001 | 0.810 ppm |
| 2018-04-11 | 1804438-001 | 2.60 ppm |
| 2018-04-25 | 18041332-01 | 0.300 ppm |
| 2018-04-25 | 1804812-001 | 0.430 ppm |
| 2018-05-03 | 201805040323A | 0.560 ppm |
| 2018-05-03 | 201805040327 | 1.20 ppm |
| 2018-05-03 | 201805040433 | 0.530 ppm |
| 2018-05-09 | 1805362-001 | 2.80 ppm |
| 2018-05-15 | 201805160828 | ND |
| 2018-05-15 | 201805161039 | ND |
| 2018-05-24 | 201805250730 | 2.40 ppm |
| 2018-05-30 | 1805894-001 | ND |
| 2018-05-30 | 201805310461 | ND |
| 2018-05-30 | 201805310480 | 2.70 ppm |
| 2018-05-30 | 201805310569 | ND |
| 2018-05-31 | 1805910-001 | 0.420 ppm |
| 2018-05-31 | 201806010522 | 0.410 ppm |
| 2018-06-13 | 1806449-001 | 2.70 ppm |
| 2018-06-19 | 201806200515 | ND |
| 2018-06-19 | 201806200648 | 2.50 ppm |
| 2018-06-20 | 1806655-001 | 0.420 ppm |
| 2018-06-21 | 201806220260 | 2.80 ppm |
| 2018-06-21 | 201806220270 | 0.360 ppm |
| 2018-06-28 | 201806290274 | 5.20 ppm |
| 2018-07-11 | 1807372-001 | 1.10 ppm |
| 2018-07-11 | 1807372-002 | 2.80 ppm |
| 2018-07-18 | 1807631-001 | 0.710 ppm |
| 2018-07-18 | 1807632-001 | 5.50 ppm |
| 2018-07-19 | 1807645-001 | 5.40 ppm |
| 2018-07-23 | 1807713-001 | 5.30 ppm |
| 2018-07-23 | 201807240376 | 0.180 ppm |
| 2018-07-24 | 1807744-001 | 5.20 ppm |
| 2018-07-25 | 1807830-001 | 5.20 ppm |
| 2018-07-30 | 1807913-001 | 5.00 ppm |
| 2018-07-31 | 1807937-001 | 5.10 ppm |
| 2018-08-01 | 1808033-001 | 5.00 ppm |
| 2018-08-06 | 1808148-001 | 5.10 ppm |
| 2018-08-07 | 1808217-001 | 5.10 ppm |
| 2018-08-08 | 1808328-001 | 5.00 ppm |
| 2018-08-09 | 201808110163 | 2.20 ppm |
| 2018-08-13 | 1808406-001 | 4.80 ppm |
| 2018-08-14 | 1808426-001 | 5.20 ppm |
| 2018-08-15 | 1808526-001 | 4.30 ppm |
| 2018-08-22 | 1808748-001 | 0.440 ppm |
| 2018-08-22 | 1808749-001 | 5.00 ppm |
| 2018-08-29 | 1808978-001 | 5.30 ppm |
| 2018-09-05 | 18090139-001 | 5.50 ppm |
| 2018-09-10 | 18090309-001 | 5.50 ppm |
| 2018-09-12 | 18090436-001 | 0.480 ppm |
| 2018-09-12 | 18090437-001 | 5.20 ppm |
| 2018-09-12 | 18090437-002 | 3.00 ppm |
| 2018-09-14 | 18090504-001 | 5.40 ppm |
| 2018-09-17 | 18090546-001 | 5.30 ppm |
| 2018-09-18 | 18090654-002 | 7.30 ppm |
| 2018-09-19 | 18090657-001 | 5.40 ppm |
| 2018-09-21 | 18090717-001 | 5.50 ppm |
| 2018-09-24 | 18090743-001 | 5.40 ppm |
| 2018-09-26 | 18090864-001 | 5.40 ppm |
| 2018-09-28 | 18090939-001 | 5.50 ppm |
| 2018-10-01 | 18100005-001 | 5.30 ppm |
| 2018-10-03 | 18100182-001 | 5.50 ppm |
| 2018-10-05 | 18100258-001 | 5.60 ppm |
| 2018-10-08 | 18100285-001 | 5.50 ppm |
| 2018-10-10 | 18100426-001 | 5.50 ppm |
| 2018-10-10 | 18100426-002 | 3.30 ppm |
| 2018-10-12 | 18100491-001 | 5.40 ppm |
| 2019-02-20 | 19020481-001 | 0.410 ppm |
| 2019-04-24 | 19040743-001 | 0.390 ppm |
| 2019-05-09 | 201905110146 | 0.470 ppm |
| 2019-05-22 | 19050682-001 | 0.400 ppm |
| 2019-06-19 | 19060645-001 | 0.370 ppm |
| 2019-06-20 | 190620-001 | 2.90 ppm |
| 2019-06-20 | 190620-002 | 2.68 ppm |
| 2019-06-20 | 190620-004 | 0.530 ppm |
| 2019-06-20 | 190620-005 | ND |
| 2019-06-20 | 190620-006 | 2.04 ppm |
| 2019-06-20 | 190620-007 | ND |
| 2019-06-20 | 19620-003 | 0.790 ppm |
| 2019-06-24 | 201906250202A | ND |
| 2019-06-26 | 190626-004 | ND |
| 2019-07-08 | 190709-001 | 7.20 ppm |
| 2019-07-10 | 190710-005 | 3.08 ppm |
| 2019-07-12 | 190712-001 | 6.46 ppm |
| 2019-07-15 | 190715-001 | 6.18 ppm |
| 2019-07-17 | 190717-014 | 6.23 ppm |
| 2019-07-22 | 190722-001 | 5.97 ppm |
| 2019-07-24 | 19070940-001 | 0.380 ppm |
| 2019-07-24 | 190724-001 | 6.04 ppm |
| 2019-07-26 | 190726-001 | 5.96 ppm |
| 2019-07-29 | 190729-001 | 5.83 ppm |
| 2019-07-31 | 190731-001 | 5.46 ppm |
| 2019-08-02 | 190802-001 | 5.49 ppm |
| 2019-08-02 | 190802-002 | 2.52 ppm |
| 2019-08-05 | 190805-003 | 5.82 ppm |
| 2019-08-07 | 190806-005 | 5.84 ppm |
| 2019-08-09 | 190809-001 | 5.77 ppm |
| 2019-08-12 | 190812-001 | 5.76 ppm |
| 2019-08-13 | 190813-001 | 1.45 ppm |
| 2019-08-14 | 190814-004 | 5.71 ppm |
| 2019-08-14 | 190814-005 | 2.96 ppm |
| 2019-08-16 | 190816-001 | 5.75 ppm |
| 2019-08-21 | 190821-004 | 5.68 ppm |
| 2019-08-21 | 190821-010 | 2.18 ppm |
| 2019-08-21 | 190821-011 | 1.05 ppm |
| 2019-08-21 | 190821-012 | ND |
| 2019-08-21 | 201908220455 | ND |
| 2019-08-22 | 190822-001 | ND |
| 2019-08-22 | 201908230324 | 1.90 ppm |
| 2019-08-23 | 190823-001 | 5.76 ppm |
| 2019-08-26 | 190826-001 | 5.65 ppm |
| 2019-08-27 | 190827-001 | ND |
| 2019-08-27 | 190827-002 | 0.709 ppm |
| 2019-09-11 | 19090393-001 | 3.10 ppm |
| 2019-09-24 | 201909250291 | 0.340 ppm |
| 2019-09-25 | 201909260166 | 1.000 ppm |
| 2019-09-26 | 190926-002 | ND |
| 2019-09-26 | 190926-003 | 6.43 ppm |
| 2019-10-30 | 191030-004 | 0.780 ppm |
| 2019-11-20 | 191120-001 | ND |
| 2019-12-23 | 201912260084 | 0.850 ppm |
| 2019-12-30 | 19120820-001 | 0.800 ppm |
| 2019-12-30 | 19120825-001 | 5.90 ppm |