The Power of Information

National Drinking Water Database

Greenville Sanitary Dist Utilities - Appleton, WI

Serves 5,211 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
4 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)
4 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
10 days
Tests ConductedNumber of individual tests done for this contaminant
13 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.13.33 pCi/L
22 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
2007-10-2217 pCi/L1017 pCi/L
2007-07-2711.5 pCi/L208 to 15 pCi/L
2006-04-2515 pCi/L207 to 23 pCi/L
2006-04-0618.3 pCi/L1018.3 pCi/L
2006-02-1314 pCi/L1014 pCi/L
2006-02-0121 pCi/L1021 pCi/L
2005-09-2822 pCi/L2020 to 24 pCi/L
2005-06-209.9 pCi/L109.9 pCi/L
2005-03-223.6 pCi/L103.6 pCi/L
2005-01-111 pCi/L101 pCi/L