The Power of Information

National Drinking Water Database


City of Fresno Water Division Utilities - Fresno, CA


Serves 390,350 people

Radium-228

Radium-228 is a radioactive element usually found around uranium deposits.
 
This Drinking Water System
Test Days Exceeding Health GuidelinesDefinition of what this is
52 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
74 days
Tests ConductedNumber of individual tests done for this contaminant
900 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Radium-228Radium-228 is a radioactive element usually found around uranium deposits.0.22 pCi/L
1.56 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
No
5 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 Radium-228

Health Based Limits for Radium-228

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
California Public Health GoalsDefined by the State of California Office of Environmental Health Hazard Assessment (OEHHA) as the level of contaminant that is allowed in drinking water. For acutely toxic substances, levels are set at which scientific evidence indicates that no known or anticipated adverse effects on health will occur, plus an adequate margin-of safety. PHGs for carcinogens or other substances which can cause chronic disease shall be based solely on health effects without regard to cost impacts and shall be set at levels which OEHHA has determined do not pose any significant risk to health.0.02 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.5 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.5 pCi/L

Testing Results

Testing DateAverage
Result
Samples taken that dayNumber of Non-DetectsRange of Results
2008-11-210 pCi/L110 pCi/L
2008-07-170 pCi/L110 pCi/L
2008-01-150 pCi/L110 pCi/L
2008-01-140.18 pCi/L650 to 1.07 pCi/L
2008-01-040 pCi/L220 pCi/L
2007-10-311.16 pCi/L101.16 pCi/L
2007-08-300 pCi/L110 pCi/L
2007-08-280 pCi/L110 pCi/L
2007-06-260.27 pCi/L430 to 1.07 pCi/L
2007-06-130.35 pCi/L15110 to 1.45 pCi/L
2007-06-120 pCi/L11110 pCi/L
2007-06-060.15 pCi/L870 to 1.22 pCi/L
2007-06-051.56 pCi/L201.35 to 1.77 pCi/L
2007-06-040.21 pCi/L1190 to 1.17 pCi/L
2007-06-010.2 pCi/L18160 to 2.3 pCi/L
2007-05-310.24 pCi/L14110 to 1.15 pCi/L
2007-05-300.11 pCi/L980 to 1.03 pCi/L
2007-05-290.2 pCi/L1090 to 1.96 pCi/L
2007-05-250.21 pCi/L20160 to 1.15 pCi/L
2007-05-240.19 pCi/L17140 to 1.19 pCi/L
2007-05-230 pCi/L990 pCi/L
2007-05-220.07 pCi/L18170 to 1.25 pCi/L
2007-04-200 pCi/L110 pCi/L
2007-04-190 pCi/L110 pCi/L
2007-03-290.26 pCi/L720 to 0.67 pCi/L
2007-03-210 pCi/L770 pCi/L
2007-03-160.06 pCi/L20190 to 1.25 pCi/L
2007-03-150 pCi/L14140 pCi/L
2007-03-130 pCi/L110 pCi/L
2007-03-120.09 pCi/L18170 to 1.61 pCi/L
2007-03-080.14 pCi/L16140 to 1.1 pCi/L
2007-03-060.36 pCi/L20140 to 1.43 pCi/L
2006-12-200 pCi/L220 pCi/L
2006-12-190.61 pCi/L530 to 1.72 pCi/L
2006-12-180.06 pCi/L17160 to 1.08 pCi/L
2006-12-150.12 pCi/L19170 to 1.26 pCi/L
2006-12-140.08 pCi/L16150 to 1.24 pCi/L
2006-12-130 pCi/L16160 pCi/L
2006-12-120 pCi/L18180 pCi/L
2006-12-110 pCi/L17170 pCi/L
2006-12-080.04 pCi/L25240 to 1.06 pCi/L
2006-12-070 pCi/L880 pCi/L
2006-12-060.18 pCi/L13110 to 1.24 pCi/L
2006-12-050 pCi/L990 pCi/L
2006-12-040 pCi/L14140 pCi/L
2006-10-170 pCi/L19190 pCi/L
2006-09-280.13 pCi/L18160 to 1.26 pCi/L
2006-09-270 pCi/L29290 pCi/L
2006-09-260.22 pCi/L29240 to 1.3 pCi/L
2006-09-250.37 pCi/L19140 to 2.15 pCi/L
2006-09-220.15 pCi/L18160 to 1.59 pCi/L
2006-09-210.07 pCi/L20190 to 1.36 pCi/L
2006-09-200.06 pCi/L24230 to 1.37 pCi/L
2006-09-190.14 pCi/L1090 to 1.37 pCi/L
2006-09-180.49 pCi/L1060 to 1.37 pCi/L
2006-09-150.22 pCi/L1080 to 1.15 pCi/L
2006-09-140.25 pCi/L1080 to 1.48 pCi/L
2006-09-130.13 pCi/L1090 to 1.33 pCi/L
2006-09-120.53 pCi/L640 to 1.75 pCi/L
2006-07-250.44 pCi/L100.44 pCi/L
2006-06-290.68 pCi/L400.5 to 1 pCi/L
2006-06-280.81 pCi/L1800.35 to 1.6 pCi/L
2006-06-270.46 pCi/L3810 to 1.1 pCi/L
2006-06-260.51 pCi/L2000.12 to 0.95 pCi/L
2006-06-230.29 pCi/L1200.02 to 0.78 pCi/L
2006-06-220.36 pCi/L1700.05 to 0.71 pCi/L
2006-06-210.38 pCi/L1500.02 to 0.87 pCi/L
2006-06-200.31 pCi/L1600.05 to 0.64 pCi/L
2006-06-190.38 pCi/L500.18 to 0.57 pCi/L
2006-06-160.45 pCi/L500.12 to 0.73 pCi/L
2006-06-150.27 pCi/L1000.04 to 0.57 pCi/L
2006-06-140.5 pCi/L2500.02 to 1.2 pCi/L
2006-06-130.48 pCi/L1700.12 to 1.1 pCi/L
2006-05-260.31 pCi/L100.31 pCi/L