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EWG's Tap Water Database — 2019 UPDATE

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Nitrate and nitrite

City of Comanche

NOTE: City of Comanche purchases water from Upper Leon River Municipal Water District which is required to test for nitrate and nitrite. Sample information shown below was taken by Upper Leon River Municipal Water District.

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.

 

0

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20120.0860 ppm110.0860 ppm
2013N/A00N/A
20140.0800 ppm110.0800 ppm
20150.0900 ppm110.0900 ppm
2016N/A00N/A
2017N/A00N/A

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

NOTE: City of Comanche purchases water from Upper Leon River Municipal Water District which is required to test for nitrate and nitrite. Sample information shown below was taken by Upper Leon River Municipal Water District.

Date Lab ID Result