Know Your Environment. Protect Your Health.

Nitrate

Veiola Water Idaho

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.

 

463

Samples

0

Samples exceeding legal limit (MCL)

298

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20181.09 ppm7648ND - 6.70 ppm
20191.08 ppm7951ND - 7.10 ppm
20201.34 ppm7548ND - 7.70 ppm
20211.31 ppm7950ND - 7.20 ppm
20221.07 ppm7550ND - 6.90 ppm
20231.04 ppm7951ND - 5.60 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

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
2018-02-01I18045952.00 ppm
2018-02-01I18045930.300 ppm
2018-02-05I18049860.700 ppm
2018-02-06I1805274ND
2018-02-06I1805276ND
2018-02-06I18052800.200 ppm
2018-02-06I1805278ND
2018-02-12I1806151ND
2018-02-12I18061535.90 ppm
2018-02-12I18061524.10 ppm
2018-03-12I18105410.200 ppm
2018-05-15I18218600.500 ppm
2018-05-15I18218542.20 ppm
2018-05-15I18218632.30 ppm
2018-05-15I1821851ND
2018-05-23I1823162ND
2018-05-23I18231632.50 ppm
2018-05-23I1823164ND
2018-05-23I18231653.40 ppm
2018-06-05I1825330ND
2018-06-05I18253311.10 ppm
2018-06-05I1825332ND
2018-06-05I18253290.800 ppm
2018-06-05I18235330ND
2018-06-06I18255870.600 ppm
2018-06-06I18255821.30 ppm
2018-06-06I18255842.10 ppm
2018-06-06I18255830.800 ppm
2018-06-06I1825581ND
2018-06-06I18255881.20 ppm
2018-06-12I18264980.300 ppm
2018-06-12I18264971.80 ppm
2018-06-12I1826496ND
2018-06-15I18273451.10 ppm
2018-06-15I1827347ND
2018-06-15I18273491.60 ppm
2018-06-15I18273465.10 ppm
2018-06-15I1827348ND
2018-06-21I1828643ND
2018-06-21I18286410.200 ppm
2018-06-21I1828602ND
2018-06-21I1828605ND
2018-06-21I18286446.30 ppm
2018-06-21I1828604ND
2018-06-21I18286030.300 ppm
2018-06-21I1828606ND
2018-06-21I18286082.40 ppm
2018-06-26I18293431.30 ppm
2018-06-26I1829344ND
2018-06-26I1829342ND
2018-06-26I18293450.400 ppm
2018-06-26I18293410.300 ppm
2018-07-02I1830576ND
2018-07-02I1830574ND
2018-07-02I1830573ND
2018-07-02I18305720.300 ppm
2018-07-02I18305770.700 ppm
2018-07-02I18305781.000 ppm
2018-07-02I18305751.30 ppm
2018-07-02I1830571ND
2018-07-05I18311630.800 ppm
2018-07-10I18320310.400 ppm
2018-07-10I18320362.30 ppm
2018-07-10I18320290.500 ppm
2018-07-10I18320421.10 ppm
2018-07-10I18320440.700 ppm
2018-07-10I18320330.400 ppm
2018-07-10I18320341.20 ppm
2018-07-10I18320380.300 ppm
2018-07-18I1833957ND
2018-08-15I18398276.70 ppm
2018-08-23I1841238ND
2018-08-23I18412401.20 ppm
2018-08-23I18412374.50 ppm
2018-08-23I1841239ND
2018-11-08I18555716.40 ppm
2019-01-31I1904611ND
2019-01-31I19046152.50 ppm
2019-02-07I19057232.20 ppm
2019-02-07I19057270.900 ppm
2019-02-07I1905724ND
2019-02-19I1907388ND
2019-02-19I19073860.300 ppm
2019-03-06I19098650.400 ppm
2019-03-06I1909868ND
2019-03-26I19133573.00 ppm
2019-03-26I19133566.30 ppm
2019-03-27I19135284.40 ppm
2019-04-17I19173190.500 ppm
2019-04-17I19173216.40 ppm
2019-04-22I19182410.600 ppm
2019-04-22I1918243ND
2019-04-22I1918245ND
2019-04-30I19196631.90 ppm
2019-04-30I1919664ND
2019-04-30I19196672.30 ppm
2019-04-30I19196661.90 ppm
2019-04-30I1919670ND
2019-05-08I19212640.400 ppm
2019-05-08I19212652.30 ppm
2019-05-08I19212621.10 ppm
2019-05-08I1921263ND
2019-05-08I1921261ND
2019-05-29I19251211.10 ppm
2019-05-29I1925123ND
2019-06-11I19276151.30 ppm
2019-06-11I19276180.700 ppm
2019-06-11I1927614ND
2019-06-11I19276191.40 ppm
2019-06-11I19276110.300 ppm
2019-06-11I19276135.40 ppm
2019-06-12I19279731.30 ppm
2019-06-12I19279740.300 ppm
2019-06-12I19279760.200 ppm
2019-06-12I19279781.70 ppm
2019-06-12I1927979ND
2019-06-12I19279720.300 ppm
2019-06-13I19282432.50 ppm
2019-06-20I1929654ND
2019-07-03I19321183.50 ppm
2019-07-03I19321206.70 ppm
2019-07-09I1933025ND
2019-07-09I1933024ND
2019-07-09I1933029ND
2019-07-09I19330260.700 ppm
2019-07-09I19330341.000 ppm
2019-07-09I19330320.700 ppm
2019-07-10I1933348ND
2019-07-10I19333461.10 ppm
2019-07-10I1933345ND
2019-07-10I19333410.700 ppm
2019-07-18I19351500.700 ppm
2019-07-18I19351410.400 ppm
2019-07-18I19351420.500 ppm
2019-07-18I19351430.400 ppm
2019-07-18I19351480.500 ppm
2019-07-18I19351491.10 ppm
2019-07-19I1935265ND
2019-07-19I19352641.40 ppm
2019-07-19I1935267ND
2019-07-19I1935266ND
2019-07-31I19374960.700 ppm
2019-07-31I19374971.000 ppm
2019-08-02I1937930ND
2019-08-05I1938320ND
2019-08-05I19381460.400 ppm
2019-08-05I1938144ND
2019-08-06I1938602ND
2019-08-06I19386030.300 ppm
2019-08-07I19389881.30 ppm
2019-08-07I1938747ND
2019-08-28I19429300.400 ppm
2019-08-28I1942932ND
2019-09-05I19445230.500 ppm
2019-10-09I19510127.10 ppm
2020-01-24I20035080.900 ppm
2020-01-29I20042883.70 ppm
2020-01-29I2004286ND
2020-03-05I20100834.70 ppm
2020-03-09I20104747.40 ppm
2020-03-17I2012067ND
2020-03-17I2012065ND
2020-05-11I20211660.500 ppm
2020-05-11I20211642.30 ppm
2020-05-12I2021375ND
2020-05-12I20213740.300 ppm
2020-05-12I2021372ND
2020-05-12I20213772.00 ppm
2020-05-14I20220401.90 ppm
2020-05-27I20241817.60 ppm
2020-05-27I20241804.40 ppm
2020-05-27I20241754.80 ppm
2020-05-27I20241783.70 ppm
2020-05-27I2024179ND
2020-06-22I2029096ND
2020-06-22I20290951.20 ppm
2020-06-22I20290930.500 ppm
2020-06-24I20296882.40 ppm
2020-06-24I20296860.300 ppm
2020-06-24I2029684ND
2020-06-24I2029690ND
2020-06-24I20296821.30 ppm
2020-06-24I3029683ND
2020-06-24I20296851.90 ppm
2020-06-24I2029689ND
2020-06-25I2029968ND
2020-06-25I20299771.80 ppm
2020-06-25I2029964ND
2020-06-25I2029963ND
2020-06-25I20299490.400 ppm
2020-06-25I2029967ND
2020-06-25I20299610.400 ppm
2020-06-25I20299700.200 ppm
2020-06-25I2029965ND
2020-06-25I20299622.30 ppm
2020-06-25I20299500.300 ppm
2020-07-06I20313741.30 ppm
2020-07-06I2031372ND
2020-07-06I20313710.500 ppm
2020-07-06I20313700.400 ppm
2020-07-06I20313680.700 ppm
2020-07-07I2031607ND
2020-07-07I20316051.90 ppm
2020-07-07I2031604ND
2020-07-07I20316087.70 ppm
2020-07-07I2031609ND
2020-07-09I20323161.10 ppm
2020-07-09I2032320ND
2020-07-09I20323180.300 ppm
2020-07-15I2033263ND
2020-07-15I2033262ND
2020-07-15I20332500.500 ppm
2020-07-15I20332475.40 ppm
2020-07-21I20344461.30 ppm
2020-07-21I20344481.10 ppm
2020-07-21I20344501.50 ppm
2020-07-21I203447ND
2020-07-22I20347981.10 ppm
2020-07-22I20347970.600 ppm
2020-07-22I20347950.800 ppm
2020-07-28I2035874ND
2020-07-28I2035872ND
2020-07-28I2035876ND
2020-07-29I20361801.30 ppm
2020-07-29I20361781.30 ppm
2020-07-30I20363460.500 ppm
2020-07-30I20363451.10 ppm
2020-07-30I20363430.300 ppm
2020-10-07I20502605.60 ppm
2020-10-13I20512497.10 ppm
2021-02-10I21064434.10 ppm
2021-02-10I2106445ND
2021-02-10I2106442ND
2021-02-11I21067462.10 ppm
2021-02-11I2106744ND
2021-02-11I2106745ND
2021-02-22I2108110ND
2021-02-22I2108113ND
2021-02-22I21081120.600 ppm
2021-02-22I2108114ND
2021-02-23I21083070.900 ppm
2021-02-25I2108884ND
2021-02-25I21088814.60 ppm
2021-02-25I21088825.50 ppm
2021-03-10I21112042.30 ppm
2021-03-10I21112010.400 ppm
2021-03-10I21112056.80 ppm
2021-03-10I2111203ND
2021-03-10I21112022.70 ppm
2021-03-10I21112060.800 ppm
2021-03-31I21144620.500 ppm
2021-03-31I21144612.30 ppm
2021-03-31I21144642.30 ppm
2021-03-31I21144630.500 ppm
2021-04-05I2115127ND
2021-04-05I2115126ND
2021-04-14I21168750.300 ppm
2021-04-14I21168801.50 ppm
2021-04-14I21168782.50 ppm
2021-04-14I2116876ND
2021-04-14I21168740.400 ppm
2021-04-14I21168771.30 ppm
2021-04-19I21178695.40 ppm
2021-04-19I21178670.800 ppm
2021-04-19I21178681.10 ppm
2021-04-28I2119733ND
2021-05-05I21212770.600 ppm
2021-05-05I21212797.00 ppm
2021-05-05I21212760.300 ppm
2021-05-12I21226920.400 ppm
2021-05-12I21226892.10 ppm
2021-05-12I21226880.600 ppm
2021-05-12I21226931.30 ppm
2021-06-02I2126624ND
2021-06-02I21266231.60 ppm
2021-06-02I21266261.90 ppm
2021-06-02I21266191.20 ppm
2021-06-02I2126625ND
2021-06-02I21266210.500 ppm
2021-06-07I2127527ND
2021-06-07I2127528ND
2021-06-07I2127529ND
2021-06-08I2127830ND
2021-06-09I21283590.500 ppm
2021-06-14I2129190ND
2021-06-14I2129194ND
2021-06-14I2129191ND
2021-06-14I21291890.700 ppm
2021-06-14I2129193ND
2021-06-16I2129750ND
2021-06-16I21297460.400 ppm
2021-06-16I21297410.400 ppm
2021-06-16I2129745ND
2021-06-24I21315971.000 ppm
2021-06-24I21315991.000 ppm
2021-07-06I21334207.20 ppm
2021-07-06I2133416ND
2021-07-06I21334180.300 ppm
2021-07-07I2133971ND
2021-07-07I21339721.10 ppm
2021-07-13I21350395.60 ppm
2021-08-03I21395832.00 ppm
2021-08-03I21395921.000 ppm
2021-08-03I21395930.900 ppm
2021-08-04I2139907ND
2021-08-16I2142272ND
2021-09-15I21485701.40 ppm
2021-10-04I21526806.90 ppm
2021-10-04I21526775.60 ppm
2022-02-08I22063510.200 ppm
2022-02-23I22088481.000 ppm
2022-02-23I2208846ND
2022-02-23I22088442.10 ppm
2022-02-23I22088452.10 ppm
2022-02-28I2209478ND
2022-02-28I22094755.50 ppm
2022-02-28I22094765.50 ppm
2022-02-28I22094770.400 ppm
2022-03-02I22099684.10 ppm
2022-03-02I2209967ND
2022-03-09I22113340.900 ppm
2022-03-09I22113350.600 ppm
2022-03-09I22113392.10 ppm
2022-04-20I2218604ND
2022-04-27I22198510.300 ppm
2022-04-27I22198530.600 ppm
2022-04-27I22198601.50 ppm
2022-05-04I2221318ND
2022-05-04I2221316ND
2022-05-11I22225710.500 ppm
2022-05-11I2222576ND
2022-05-11I22225722.20 ppm
2022-05-26I22253690.200 ppm
2022-05-26I22253681.90 ppm
2022-05-26I2225367ND
2022-05-26I22253631.000 ppm
2022-05-26I2225366ND
2022-05-26I22253653.00 ppm
2022-05-26I22253640.200 ppm
2022-05-26I2225362ND
2022-05-26I22253611.60 ppm
2022-06-08I22272916.90 ppm
2022-06-08I22272830.500 ppm
2022-06-08I2227282ND
2022-06-08I22272810.800 ppm
2022-06-08I22272860.700 ppm
2022-06-08I22272851.10 ppm
2022-06-08I22272840.800 ppm
2022-06-15I22285462.30 ppm
2022-06-15I22285451.30 ppm
2022-06-15I22285440.400 ppm
2022-06-15I2228542ND
2022-06-15I22285410.400 ppm
2022-06-15I2228543ND
2022-06-28I2230857ND
2022-06-28I2230850ND
2022-06-28I22308491.70 ppm
2022-06-28I2230847ND
2022-06-28I2230856ND
2022-06-28I22308460.700 ppm
2022-06-28I22308430.500 ppm
2022-06-28I22308420.200 ppm
2022-06-28I22308540.500 ppm
2022-06-28I2230845ND
2022-06-28I2230853ND
2022-06-28I22308521.40 ppm
2022-06-28I2230851ND
2022-06-28I2230848ND
2022-07-12I22331260.500 ppm
2022-07-12I22331250.300 ppm
2022-07-12I2233124ND
2022-07-12I22331231.90 ppm
2022-07-12I2233122ND
2022-07-12I22331211.20 ppm
2022-07-19I22345886.80 ppm
2022-07-19I2234592ND
2022-07-19I22345911.000 ppm
2022-07-26I22359040.700 ppm
2022-07-26I2235897ND
2022-07-26I22359051.000 ppm
2022-07-26I22358951.30 ppm
2022-07-26I22359030.800 ppm
2022-07-26I22359010.700 ppm
2022-10-12I22511696.20 ppm
2023-01-24I2301536-014.50 ppm
2023-03-08I2304392-025.40 ppm
2023-03-08I2304392-050.300 ppm
2023-03-08I2304392-073.60 ppm
2023-03-08I2304392-082.30 ppm
2023-03-09I2304517-010.600 ppm
2023-03-09I2304517-020.300 ppm
2023-03-09I2304517-032.00 ppm
2023-03-09I2304517-05ND
2023-03-09I2304517-071.000 ppm
2023-03-09I2304517-08ND
2023-03-09I2304517-09ND
2023-04-26I2307945-045.50 ppm
2023-04-26I2307945-07ND
2023-04-26I2307945-08ND
2023-04-26I2307945-091.20 ppm
2023-04-26I2307950-030.300 ppm
2023-04-26I2307950-052.10 ppm
2023-04-26I2307950-062.00 ppm
2023-04-26I2307950-07ND
2023-04-27I2308073-010.500 ppm
2023-04-27I2308073-020.500 ppm
2023-04-27I2308073-031.30 ppm
2023-04-27I2308073-051.30 ppm
2023-04-27I2308073-061.90 ppm
2023-04-27I2308073-092.70 ppm
2023-05-03I2308473-01ND
2023-05-03I2308473-020.200 ppm
2023-05-03I2308473-031.90 ppm
2023-06-07I2311313-01ND
2023-06-07I2311303-01ND
2023-06-07I2311289-010.400 ppm
2023-06-07I2311276-011.20 ppm
2023-06-07I2311269-01ND
2023-06-07I2311310-011.90 ppm
2023-06-07I2311268-010.500 ppm
2023-06-07I2311287-01ND
2023-06-07I2311299-013.00 ppm
2023-06-07I2311291-015.60 ppm
2023-06-07I2311322-01ND
2023-06-09I2311494-011.10 ppm
2023-06-09I2311493-010.800 ppm
2023-06-09I2311491-010.500 ppm
2023-06-09I2311483-01ND
2023-06-09I2311482-010.800 ppm
2023-06-09I2311481-011.20 ppm
2023-06-09I2311487-01ND
2023-06-09I2311479-010.700 ppm
2023-06-09I2311498-010.800 ppm
2023-06-09I2311484-010.500 ppm
2023-06-14I2311843-01ND
2023-06-14I2311835-01ND
2023-06-14I2311829-01ND
2023-06-27I2312920-010.800 ppm
2023-06-27I2312922-010.900 ppm
2023-07-06I2313595-010.600 ppm
2023-07-06I2313603-01ND
2023-07-13I2314344-01ND
2023-07-13I2314342-01ND
2023-07-13I2314408-015.50 ppm
2023-07-13I2314346-01ND
2023-07-13I2314341-01ND
2023-07-13I2314335-01ND
2023-07-19I2314930-010.400 ppm
2023-07-26I2315515-011.50 ppm
2023-07-26I2315513-011.30 ppm
2023-07-26I2315525-01ND
2023-07-26I2315532-011.000 ppm
2023-07-26I2315536-010.600 ppm
2023-07-26I2315537-010.400 ppm
2023-07-26I2315531-011.000 ppm
2023-07-31I2315916-011.10 ppm
2023-07-31I2315912-01ND
2023-07-31I2315909-01ND
2023-07-31I2315873-010.500 ppm
2023-07-31I2315880-01ND
2023-07-31I2315890-01ND
2023-07-31I2315875-011.70 ppm
2023-10-04I2321590-014.40 ppm