The Power of Information

National Drinking Water Database


Pomona - City, Water Dept. Utilities - Los Angeles, CA

Serves 156,500 people

N-nitrosopiperidine (npip)

N-nitrosopiperidine is a nitrosamine used in research; classified by the National Toxicology Program as "reasonably anticipated to be a human carcinogen."
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
0 days
Test Days Exceeding Legal LimitsNumber of days in which the samples taken in that day exceed the Maximum Contaminant Level (Depending on the contaminant and its MCL, that may or may not trigger an MCL violation. Some MCLs are based on averages spanning several months to a year)
0 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
3 days
Tests ConductedNumber of individual tests done for this contaminant
7 tests

Testing Summary

ContaminantAverage/
Maximum
Result		Health Limit
Exceeded		Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
N-nitrosopiperidine (npip)N-nitrosopiperidine is a nitrosamine used in research; classified by the National Toxicology Program as "reasonably anticipated to be a human carcinogen."0 ppb
0 ppb		NoLegal at any levelThis is the Federal Limit. State Limits may be lower.
NOTE: Each dot in the above graph represents one month.
* Water utilities are noted as exceeding the legal limit if any test is above the maximum contaminant level (MCL). Most MCLs are based on annual averages so exceeding the MCL for one test does not necessarily indicate that the system is out of compliance.

Health Based and Legal Limits for N-nitrosopiperidine (npip)

Health Based Limits for N-nitrosopiperidine (npip)

There are no health based standards that EWG is using for this chemical

Testing Results

Testing DateAverage
Result		Samples taken that dayNumber of Non-DetectsRange of Results
2008-09-050 ppb220 ppb
2008-08-260 ppb110 ppb
2008-05-240 ppb440 ppb