The Power of Information

National Drinking Water Database


City of Riverside Public Utilities Utilities - Riverside, CA


Serves 280,832 people

Alpha particle activity

Alpha particles are a form of radiation released from mining waste pollutants and natural sources.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
257 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)
1 days
Test DaysNumber of days in which this chemical has reported results in the data we received from the State
273 days
Tests ConductedNumber of individual tests done for this contaminant
275 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Alpha particle activityAlpha particles are a form of radiation released from mining waste pollutants and natural sources.6.59 pCi/L
17 pCi/L
Yes
MCLGA non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.: 0 pCi/L
Yes
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

Health Based Limits for Alpha particle activity

StandardDescriptionLevel
Maximum Contaminant Limit Goal (MCLG)A non-enforceable health goal that is set at a level at which no known or anticipated adverse effect on the health of persons occurs and which allows an adequate margin of safety. Source: U.S. Environmental Protection Agency.0 pCi/L
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
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2009-07-2810.2 pCi/L1010.2 pCi/L
2009-07-227.3 pCi/L107.3 pCi/L
2009-07-147.7 pCi/L107.7 pCi/L
2009-07-076.2 pCi/L106.2 pCi/L
2009-06-308.9 pCi/L108.9 pCi/L
2009-06-1611 pCi/L1011 pCi/L
2009-06-0910 pCi/L1010 pCi/L
2009-06-028.4 pCi/L108.4 pCi/L
2009-05-198.4 pCi/L108.4 pCi/L
2009-04-146.9 pCi/L106.9 pCi/L
2009-04-025.3 pCi/L105.3 pCi/L
2009-03-039 pCi/L109 pCi/L
2009-02-2417 pCi/L1017 pCi/L
2009-02-1715 pCi/L1015 pCi/L
2009-02-1015 pCi/L1015 pCi/L
2009-02-039.8 pCi/L109.8 pCi/L
2008-12-308.5 pCi/L108.5 pCi/L
2008-12-167.2 pCi/L107.2 pCi/L
2008-12-0911 pCi/L1011 pCi/L
2008-11-2610 pCi/L1010 pCi/L
2008-11-188.7 pCi/L108.7 pCi/L
2008-11-128.9 pCi/L108.9 pCi/L
2008-11-0411 pCi/L1011 pCi/L
2008-10-288.4 pCi/L108.4 pCi/L
2008-10-228.5 pCi/L108.5 pCi/L
2008-10-146.5 pCi/L106.5 pCi/L
2008-10-078.7 pCi/L108.7 pCi/L
2008-09-309 pCi/L109 pCi/L
2008-09-235.8 pCi/L105.8 pCi/L
2008-09-167.3 pCi/L107.3 pCi/L
2008-09-096.1 pCi/L106.1 pCi/L
2008-09-028 pCi/L108 pCi/L
2008-08-264.3 pCi/L104.3 pCi/L
2008-08-198.4 pCi/L108.4 pCi/L
2008-08-125.3 pCi/L105.3 pCi/L
2008-07-296.2 pCi/L106.2 pCi/L
2008-07-226.4 pCi/L106.4 pCi/L
2008-07-156.4 pCi/L106.4 pCi/L
2008-07-089.9 pCi/L109.9 pCi/L
2008-07-019.6 pCi/L109.6 pCi/L
2008-06-2414 pCi/L1014 pCi/L
2008-06-1712 pCi/L1012 pCi/L
2008-06-104.7 pCi/L104.7 pCi/L
2008-06-038.9 pCi/L108.9 pCi/L
2008-05-276.2 pCi/L106.2 pCi/L
2008-05-203.7 pCi/L103.7 pCi/L
2008-05-135.7 pCi/L105.7 pCi/L
2008-05-064.3 pCi/L104.3 pCi/L
2008-04-298.8 pCi/L108.8 pCi/L
2008-04-220 pCi/L110 pCi/L
2008-04-150 pCi/L110 pCi/L
2008-04-104 pCi/L104 pCi/L
2008-04-087.2 pCi/L107.2 pCi/L
2008-04-017.4 pCi/L107.4 pCi/L
2008-03-257.4 pCi/L107.4 pCi/L
2008-03-184.7 pCi/L104.7 pCi/L
2008-03-117.7 pCi/L107.7 pCi/L
2008-03-046.2 pCi/L106.2 pCi/L
2008-02-260 pCi/L110 pCi/L
2008-02-194.3 pCi/L104.3 pCi/L
2008-02-125.6 pCi/L105.6 pCi/L
2008-02-057 pCi/L107 pCi/L
2008-01-297.5 pCi/L107.5 pCi/L
2008-01-227 pCi/L107 pCi/L
2008-01-156.9 pCi/L106.9 pCi/L
2008-01-088.7 pCi/L108.7 pCi/L
2008-01-025.7 pCi/L105.7 pCi/L
2007-12-267.5 pCi/L107.5 pCi/L
2007-12-184.7 pCi/L104.7 pCi/L
2007-11-065 pCi/L105 pCi/L
2007-10-303.9 pCi/L103.9 pCi/L
2007-10-235.9 pCi/L205.9 pCi/L
2007-10-160 pCi/L110 pCi/L
2007-10-097.3 pCi/L107.3 pCi/L
2007-10-024 pCi/L104 pCi/L
2007-09-250 pCi/L110 pCi/L
2007-09-184.6 pCi/L104.6 pCi/L
2007-09-115.8 pCi/L105.8 pCi/L
2007-09-046.1 pCi/L106.1 pCi/L
2007-08-284.2 pCi/L104.2 pCi/L
2007-08-217 pCi/L107 pCi/L
2007-08-147.5 pCi/L107.5 pCi/L
2007-08-077.7 pCi/L107.7 pCi/L
2007-07-316.1 pCi/L106.1 pCi/L
2007-07-240 pCi/L110 pCi/L
2007-07-179.2 pCi/L109.2 pCi/L
2007-07-107.3 pCi/L107.3 pCi/L
2007-07-036.9 pCi/L106.9 pCi/L
2007-06-268 pCi/L108 pCi/L
2007-06-1912 pCi/L1012 pCi/L
2007-06-127.2 pCi/L107.2 pCi/L
2007-06-059 pCi/L109 pCi/L
2007-05-297.7 pCi/L107.7 pCi/L
2007-05-227.1 pCi/L107.1 pCi/L
2007-05-156.1 pCi/L106.1 pCi/L
2007-05-0810 pCi/L1010 pCi/L
2007-05-014.6 pCi/L104.6 pCi/L
2007-04-245.8 pCi/L105.8 pCi/L
2007-04-170 pCi/L110 pCi/L
2007-04-103.4 pCi/L103.4 pCi/L
2007-04-030 pCi/L110 pCi/L
2007-03-276.4 pCi/L106.4 pCi/L
2007-03-204.1 pCi/L104.1 pCi/L
2007-03-134.2 pCi/L104.2 pCi/L
2007-03-064.1 pCi/L104.1 pCi/L
2007-02-274.2 pCi/L104.2 pCi/L
2007-02-205.4 pCi/L105.4 pCi/L
2007-02-130 pCi/L110 pCi/L
2007-02-066 pCi/L106 pCi/L
2007-01-303.3 pCi/L103.3 pCi/L
2007-01-233.5 pCi/L103.5 pCi/L
2007-01-169.1 pCi/L109.1 pCi/L
2007-01-094.6 pCi/L104.6 pCi/L
2007-01-023.6 pCi/L103.6 pCi/L
2006-12-267.3 pCi/L107.3 pCi/L
2006-12-197 pCi/L107 pCi/L
2006-12-129 pCi/L109 pCi/L
2006-12-058.1 pCi/L108.1 pCi/L
2006-11-286.5 pCi/L106.5 pCi/L
2006-11-216.7 pCi/L106.7 pCi/L
2006-11-147.1 pCi/L107.1 pCi/L
2006-11-079.5 pCi/L109.5 pCi/L
2006-10-318.4 pCi/L108.4 pCi/L
2006-10-248 pCi/L108 pCi/L
2006-10-176.1 pCi/L106.1 pCi/L
2006-10-104.5 pCi/L104.5 pCi/L
2006-10-038.3 pCi/L108.3 pCi/L
2006-09-269 pCi/L109 pCi/L
2006-09-194.5 pCi/L104.5 pCi/L
2006-09-128.7 pCi/L108.7 pCi/L
2006-09-056.7 pCi/L106.7 pCi/L
2006-08-296.6 pCi/L106.6 pCi/L
2006-08-226.9 pCi/L106.9 pCi/L
2006-08-156.7 pCi/L106.7 pCi/L
2006-08-084.7 pCi/L104.7 pCi/L
2006-08-018.7 pCi/L108.7 pCi/L
2006-07-255.8 pCi/L105.8 pCi/L
2006-07-1811 pCi/L1011 pCi/L
2006-07-136.2 pCi/L106.2 pCi/L
2006-07-118 pCi/L108 pCi/L
2006-07-049.5 pCi/L109.5 pCi/L
2006-06-276.8 pCi/L106.8 pCi/L
2006-06-209.8 pCi/L109.8 pCi/L
2006-06-137.9 pCi/L107.9 pCi/L
2006-06-0612 pCi/L1012 pCi/L
2006-05-305.3 pCi/L105.3 pCi/L
2006-05-236.9 pCi/L106.9 pCi/L
2006-05-165 pCi/L105 pCi/L
2006-05-098 pCi/L108 pCi/L
2006-05-026.3 pCi/L106.3 pCi/L
2006-04-256.3 pCi/L106.3 pCi/L
2006-04-189.1 pCi/L109.1 pCi/L
2006-04-118.3 pCi/L108.3 pCi/L
2006-04-0412 pCi/L1012 pCi/L
2006-03-2812 pCi/L1012 pCi/L
2006-03-213.4 pCi/L103.4 pCi/L
2006-03-146.8 pCi/L106.8 pCi/L
2006-03-079.8 pCi/L109.8 pCi/L
2006-02-288.7 pCi/L108.7 pCi/L
2006-02-218.6 pCi/L108.6 pCi/L
2006-02-148.1 pCi/L108.1 pCi/L
2006-02-079.3 pCi/L109.3 pCi/L
2006-01-3111 pCi/L1011 pCi/L
2006-01-244.6 pCi/L104.6 pCi/L
2006-01-174.8 pCi/L104.8 pCi/L
2006-01-107.9 pCi/L107.9 pCi/L
2006-01-037.6 pCi/L107.6 pCi/L
2005-12-276 pCi/L106 pCi/L
2005-12-205.9 pCi/L105.9 pCi/L
2005-12-139.6 pCi/L109.6 pCi/L
2005-12-067.5 pCi/L107.5 pCi/L
2005-11-299.7 pCi/L109.7 pCi/L
2005-11-224.7 pCi/L104.7 pCi/L
2005-11-155.1 pCi/L105.1 pCi/L
2005-11-084.8 pCi/L104.8 pCi/L
2005-11-016.8 pCi/L106.8 pCi/L
2005-10-254.1 pCi/L104.1 pCi/L
2005-10-185.9 pCi/L105.9 pCi/L
2005-10-115.3 pCi/L105.3 pCi/L
2005-10-045.6 pCi/L105.6 pCi/L
2005-09-279.7 pCi/L109.7 pCi/L
2005-09-205.5 pCi/L105.5 pCi/L
2005-09-138.2 pCi/L108.2 pCi/L
2005-09-068.2 pCi/L108.2 pCi/L
2005-08-306.2 pCi/L106.2 pCi/L
2005-08-235.9 pCi/L105.9 pCi/L
2005-08-166.4 pCi/L106.4 pCi/L
2005-08-096.8 pCi/L106.8 pCi/L
2005-08-028.1 pCi/L108.1 pCi/L
2005-07-269.4 pCi/L109.4 pCi/L
2005-07-196.9 pCi/L106.9 pCi/L
2005-07-120 pCi/L110 pCi/L
2005-07-054.4 pCi/L104.4 pCi/L
2005-06-285.6 pCi/L105.6 pCi/L
2005-06-214.8 pCi/L104.8 pCi/L
2005-06-145.5 pCi/L105.5 pCi/L
2005-06-078.3 pCi/L108.3 pCi/L
2005-05-315.2 pCi/L105.2 pCi/L
2005-05-246.2 pCi/L106.2 pCi/L
2005-05-174.9 pCi/L104.9 pCi/L
2005-05-107.2 pCi/L107.2 pCi/L
2005-05-039.8 pCi/L109.8 pCi/L
2005-04-265.5 pCi/L105.5 pCi/L
2005-04-197.2 pCi/L107.2 pCi/L
2005-04-127.4 pCi/L107.4 pCi/L
2005-04-055.8 pCi/L105.8 pCi/L
2005-03-297.5 pCi/L107.5 pCi/L
2005-03-225.5 pCi/L105.5 pCi/L
2005-03-153.4 pCi/L103.4 pCi/L
2005-03-087.5 pCi/L107.5 pCi/L
2005-03-019.4 pCi/L109.4 pCi/L
2005-02-226.1 pCi/L106.1 pCi/L
2005-02-157.7 pCi/L107.7 pCi/L
2005-02-085.2 pCi/L105.2 pCi/L
2005-02-017.5 pCi/L107.5 pCi/L
2005-01-257.1 pCi/L107.1 pCi/L
2005-01-186.5 pCi/L106.5 pCi/L
2005-01-114.9 pCi/L104.9 pCi/L
2005-01-045.1 pCi/L105.1 pCi/L
2004-12-284.7 pCi/L104.7 pCi/L
2004-12-215.6 pCi/L105.6 pCi/L
2004-12-144.4 pCi/L104.4 pCi/L
2004-12-077.3 pCi/L107.3 pCi/L
2004-11-300 pCi/L110 pCi/L
2004-11-237.2 pCi/L107.2 pCi/L
2004-11-164.7 pCi/L104.7 pCi/L
2004-11-096.2 pCi/L106.2 pCi/L
2004-11-029.1 pCi/L109.1 pCi/L
2004-10-264.4 pCi/L104.4 pCi/L
2004-10-195.7 pCi/L105.7 pCi/L
2004-10-125.2 pCi/L105.2 pCi/L
2004-10-053.1 pCi/L103.1 pCi/L
2004-09-286.1 pCi/L106.1 pCi/L
2004-09-217.3 pCi/L107.3 pCi/L
2004-09-144.1 pCi/L104.1 pCi/L
2004-09-079.4 pCi/L109.4 pCi/L
2004-08-310 pCi/L110 pCi/L
2004-08-279.4 pCi/L109.4 pCi/L
2004-08-245.8 pCi/L105.8 pCi/L
2004-08-173.3 pCi/L103.3 pCi/L
2004-08-106.6 pCi/L106.6 pCi/L
2004-08-038.2 pCi/L108.2 pCi/L
2004-07-276.3 pCi/L106.3 pCi/L
2004-07-206.4 pCi/L106.4 pCi/L
2004-07-145.9 pCi/L105.9 pCi/L
2004-07-134.4 pCi/L104.4 pCi/L
2004-07-060 pCi/L110 pCi/L
2004-06-299.5 pCi/L109.5 pCi/L
2004-06-225.94 pCi/L105.94 pCi/L
2004-06-158.86 pCi/L108.86 pCi/L
2004-06-097.86 pCi/L107.86 pCi/L
2004-06-015.73 pCi/L105.73 pCi/L
2004-05-256.66 pCi/L106.66 pCi/L
2004-05-186.69 pCi/L106.69 pCi/L
2004-05-117.14 pCi/L107.14 pCi/L
2004-05-044.6 pCi/L104.6 pCi/L
2004-04-277.73 pCi/L107.73 pCi/L
2004-04-209.57 pCi/L109.57 pCi/L
2004-04-138.2 pCi/L108.2 pCi/L
2004-04-069.47 pCi/L109.47 pCi/L
2004-03-305.1 pCi/L105.1 pCi/L
2004-03-230 pCi/L110 pCi/L
2004-03-163.52 pCi/L103.52 pCi/L
2004-03-093.99 pCi/L103.99 pCi/L
2004-03-024.26 pCi/L104.26 pCi/L
2004-02-246.19 pCi/L106.19 pCi/L
2004-02-170 pCi/L110 pCi/L
2004-02-106.8 pCi/L106.8 pCi/L
2004-02-036.19 pCi/L106.19 pCi/L
2004-01-276.01 pCi/L106.01 pCi/L
2004-01-203.73 pCi/L103.73 pCi/L
2004-01-130 pCi/L220 pCi/L
2004-01-063.5 pCi/L103.5 pCi/L