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EWG's Tap Water Database — 2021 UPDATE

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Nitrite

Marquette

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.

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35

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013N/A00N/A
2014ND10ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND10ND
2019ND330ND

ppm = parts per million

State and national drinking water standards and health guidelines

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
2014-09-29LLF41046ND
2018-10-09LLI10669ND
2019-07-10LLI49122ND
2019-07-23LLI51541ND
2019-08-06LLI54573ND
2019-08-12LLI55758ND
2019-08-12LLI55755ND
2019-08-12LLI55759ND
2019-08-12LLI55757ND
2019-08-12LLI55754ND
2019-08-12LLI55761ND
2019-08-12LLI55763ND
2019-08-12LLI55756ND
2019-08-12LLI55762ND
2019-08-12LLI55760ND
2019-08-20LLI57968ND
2019-09-04LLI61527ND
2019-09-17LLI64831ND
2019-09-17LLI64835ND
2019-09-30LLI68449ND
2019-10-14LLI70729ND
2019-10-29LLI73383ND
2019-11-12LLI76522ND
2019-11-13LLI77104ND
2019-11-13LLI77105ND
2019-11-13LLI77103ND
2019-11-13LLI77107ND
2019-11-13LLI77106ND
2019-11-13LLI77110ND
2019-11-13LLI77102ND
2019-11-13LLI77108ND
2019-11-13LLI77109ND
2019-11-25LLI79779ND
2019-12-02LLI80648ND
2019-12-10LLI82591ND