The Power of Information

National Drinking Water Database


Oakdale Utilities - Saint Paul, MN


Serves 28,000 people

Perfluorooctane Sulfonate (PFOS)

 
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
56 days
Tests ConductedNumber of individual tests done for this contaminant
510 tests

Testing Summary

ContaminantAverage/
Maximum
Result
Health Limit
Exceeded
Legal Limit
Exceeded

Testing History

-Tested      -Detected      -Over Health Guidelines      -Over Legal Limit*
Perfluorooctane Sulfonate (PFOS)0.15 ppb
0.48 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 Perfluorooctane Sulfonate (PFOS)

Health Based Limits for Perfluorooctane Sulfonate (PFOS)

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
2008-12-090.09 ppb1080 to 0.8 ppb
2008-11-140.12 ppb650 to 0.7 ppb
2008-10-160.12 ppb650 to 0.7 ppb
2008-09-230.12 ppb650 to 0.7 ppb
2008-08-280.2 ppb920 to 0.7 ppb
2008-08-130.18 ppb1450 to 0.7 ppb
2008-07-290.19 ppb1030 to 0.8 ppb
2008-07-150.19 ppb920 to 0.8 ppb
2008-06-240.18 ppb920 to 0.8 ppb
2008-06-110.2 ppb1350 to 0.8 ppb
2008-05-280.19 ppb1020 to 0.9 ppb
2008-05-150.14 ppb830 to 0.9 ppb
2008-04-220.18 ppb950 to 0.9 ppb
2008-04-150.17 ppb970 to 0.9 ppb
2008-03-280 ppb770 ppb
2008-03-140.16 ppb1380 to 0.9 ppb
2008-02-290 ppb770 ppb
2008-02-140.11 ppb870 to 0.9 ppb
2008-01-230 ppb770 ppb
2008-01-09<0.01 ppb760 to 0.05 ppb
2007-12-270.22 ppb1390 to 0.9 ppb
2007-12-120 ppb770 ppb
2007-11-270.25 ppb1370 to 1 ppb
2007-11-140 ppb770 ppb
2007-11-050 ppb110 ppb
2007-10-310.24 ppb1390 to 1 ppb
2007-10-180 ppb770 ppb
2007-09-260.23 ppb1480 to 1.1 ppb
2007-09-120 ppb770 ppb
2007-08-170.26 ppb1590 to 1.4 ppb
2007-08-080 ppb770 ppb
2007-07-250.23 ppb1590 to 1.2 ppb
2007-07-110 ppb770 ppb
2007-06-270.23 ppb15110 to 1.2 ppb
2007-06-130 ppb770 ppb
2007-05-230.18 ppb15110 to 1 ppb
2007-05-090 ppb770 ppb
2007-04-250.2 ppb15110 to 1.1 ppb
2007-04-120 ppb770 ppb
2007-03-280.22 ppb1390 to 1.2 ppb
2007-03-140 ppb660 ppb
2007-02-280.15 ppb1290 to 0.9 ppb
2007-02-150 ppb660 ppb
2007-01-240.21 ppb14100 to 1.1 ppb
2007-01-100 ppb770 ppb
2005-12-200.29 ppb850 to 1 ppb
2005-11-220.48 ppb630 to 1.4 ppb
2005-10-180.3 ppb740 to 0.9 ppb
2005-09-150.3 ppb850 to 1 ppb
2005-08-120.31 ppb850 to 1.2 ppb
2005-07-130.3 ppb850 to 1.2 ppb
2005-06-160.28 ppb850 to 1.1 ppb
2005-05-180.2 ppb750 to 0.7 ppb
2005-03-290.34 ppb740 to 0.9 ppb
2005-02-280.33 ppb850 to 1 ppb
2005-01-250.33 ppb850 to 1.1 ppb