The Power of Information

National Drinking Water Database

City of North Las Vegas Utilities Department Utilities - Las Vegas, NV

Serves 282,600 people

Alpha particle activity (incl. radon & uranium)

Alpha particles are a form of radiation associated with mining waste pollutants and natural sources.
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
11 days
Tests ConductedNumber of individual tests done for this contaminant
14 tests

Testing Summary

Health Limit
Legal Limit

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Alpha particle activity (incl. radon & uranium)Alpha particles are a form of radiation associated with mining waste pollutants and natural sources.0.91 pCi/L
4.5 pCi/L
15 pCi/L
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 Alpha particle activity (incl. radon & uranium)

Health Based Limits for Alpha particle activity (incl. radon & uranium)

Maximum Contaminant Limit (MCL)The enforceable standard which defines the highest level of a contaminant that is allowed in drinking water. MCLs are set as close to health-based limits (Maximum Contaminant Level Goals, or MCLGs) as feasible using the best available analytical and treatment technologies and taking cost into consideration. Source: U.S. Environmental Protection Agency.15 pCi/L

Testing Results

Testing DateAverage
Samples taken that dayNumber of Non-DetectsRange of Results
2008-06-010 pCi/L100 pCi/L
2005-08-260 pCi/L110 pCi/L
2005-03-163.8 pCi/L103.8 pCi/L
2004-12-300 pCi/L110 pCi/L
2004-10-140 pCi/L110 pCi/L
2004-09-290 mg/L*110 pCi/L
2004-09-160 pCi/L220 pCi/L
2004-08-124.5 pCi/L104.5 pCi/L
2004-06-090 pCi/L220 pCi/L
2004-05-050 pCi/L110 pCi/L
2004-03-051.7 pCi/L210 to 3.4 pCi/L