Download sampling data files in comma-separated values (CSV) format (.csv).

These data may be circulated to interested agencies and organizations that may wish to perform their own analysis and evaluations. It is requested that credit be given to FOSR for producing and supplying the raw data. FOSR does not include any interpretation of data or conclusions with these data.

Lab results are intended to be advisory in nature. No regulatory actions should be taken based solely on these data. Further official testing by a government agency must be accomplished to effect regulatory action.

New data are collected and distributed every two weeks. Please visit this page periodically to check for updated data.

October 2017
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Last updated Monday, May 21, 2018 1:26:30 PM

September 2017
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Last updated Monday, May 21, 2018 1:24:55 PM

August 2017
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Last updated Monday, May 21, 2018 1:26:28 PM

July 2017
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Last updated Monday, May 21, 2018 1:26:23 PM

June 2017
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Last updated Monday, May 21, 2018 1:27:27 PM

May 2017
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Last updated Monday, May 21, 2018 1:25:59 PM

April 2017
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Last updated Monday, May 21, 2018 1:24:42 PM

March 2017
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Last updated Monday, May 21, 2018 1:28:05 PM

February 2017
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Last updated Monday, May 21, 2018 1:28:17 PM

January 2017
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Last updated Monday, May 21, 2018 1:28:35 PM

December 2016
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Last updated Monday, May 21, 2018 1:27:00 PM

November 2016
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Last updated Monday, May 21, 2018 1:28:44 PM

October 2016
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Last updated Monday, May 21, 2018 1:23:44 PM

September 2016
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Last updated Monday, May 21, 2018 1:28:20 PM

August 2016
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Last updated Monday, May 21, 2018 1:23:35 PM

July 2016
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Last updated Monday, May 21, 2018 1:23:37 PM

June 2016
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Last updated Monday, May 21, 2018 1:23:52 PM

May 2016
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Last updated Monday, May 21, 2018 1:29:12 PM

April 2016
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Last updated Monday, May 21, 2018 1:28:14 PM

March 2016
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Last updated Monday, May 21, 2018 1:24:31 PM

February 2016
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Last updated Monday, May 21, 2018 1:24:59 PM

January 2016
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Last updated Monday, May 21, 2018 1:26:00 PM

December 2015
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Last updated Monday, May 21, 2018 1:23:13 PM

November 2015
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Last updated Monday, May 21, 2018 1:25:41 PM

October 2015
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Last updated Monday, May 21, 2018 1:26:34 PM

September 2015
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Last updated Monday, May 21, 2018 1:24:58 PM

August 2015
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Last updated Monday, May 21, 2018 1:26:22 PM

July 2015
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Last updated Monday, May 21, 2018 1:26:30 PM

June 2015
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Last updated Monday, May 21, 2018 1:27:24 PM

May 2015
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Last updated Monday, May 21, 2018 1:25:52 PM

April 2015
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Last updated Monday, May 21, 2018 1:24:45 PM

March 2015
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Last updated Monday, May 21, 2018 1:28:00 PM

February 2015
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Last updated Monday, May 21, 2018 1:28:18 PM

January 2015
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Last updated Monday, May 21, 2018 1:28:34 PM

December 2014
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Last updated Monday, May 21, 2018 1:26:18 PM

November 2014
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Last updated Monday, May 21, 2018 1:23:23 PM

October 2014
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Last updated Monday, May 21, 2018 1:29:17 PM

September 2014
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Last updated Monday, May 21, 2018 1:24:25 PM

August 2014
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Last updated Monday, May 21, 2018 1:28:58 PM

July 2014
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Last updated Monday, May 21, 2018 1:29:11 PM

June 2014
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Last updated Monday, May 21, 2018 1:27:36 PM

April 2014
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Last updated Monday, May 21, 2018 1:24:15 PM

March 2014
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Last updated Monday, May 21, 2018 1:27:08 PM

February 2014
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Last updated Monday, May 21, 2018 1:27:20 PM

January 2014
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Last updated Monday, May 21, 2018 1:26:38 PM

December 2013
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Last updated Monday, May 21, 2018 1:28:23 PM

November 2013
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Last updated Monday, May 21, 2018 1:27:25 PM

October 2013
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Last updated Monday, May 21, 2018 1:25:29 PM

September 2013
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Last updated Monday, May 21, 2018 1:26:50 PM

August 2013
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Last updated Monday, May 21, 2018 1:25:25 PM

July 2013
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Last updated Monday, May 21, 2018 1:25:24 PM

June 2013
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Last updated Monday, May 21, 2018 1:25:38 PM

May 2013
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Last updated Monday, May 21, 2018 1:27:34 PM

April 2013
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Last updated Monday, May 21, 2018 1:26:43 PM

March 2013
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Last updated Monday, May 21, 2018 1:22:54 PM

February 2013
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Last updated Monday, May 21, 2018 1:23:00 PM

January 2013
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Last updated Monday, May 21, 2018 1:24:11 PM

December 2012
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Last updated Monday, May 21, 2018 1:28:15 PM

November 2012
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Last updated Monday, May 21, 2018 1:27:31 PM

October 2012
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Last updated Monday, May 21, 2018 1:25:18 PM

September 2012
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Last updated Monday, May 21, 2018 1:26:41 PM

August 2012
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Last updated Monday, May 21, 2018 1:25:05 PM

July 2012
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Last updated Monday, May 21, 2018 1:25:11 PM

June 2012
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Last updated Monday, May 21, 2018 1:25:49 PM

April 2012
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Last updated Monday, May 21, 2018 1:27:01 PM

March 2012
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Last updated Monday, May 21, 2018 1:22:59 PM

February 2012
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Last updated Monday, May 21, 2018 1:22:53 PM

January 2012
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Last updated Monday, May 21, 2018 1:24:21 PM

December 2011
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Last updated Monday, May 21, 2018 1:27:32 PM

November 2011
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Last updated Monday, May 21, 2018 1:27:59 PM

October 2011
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Last updated Monday, May 21, 2018 1:24:27 PM

September 2011
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Last updated Monday, May 21, 2018 1:29:02 PM

August 2011
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Last updated Monday, May 21, 2018 1:24:26 PM

July 2011
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Last updated Monday, May 21, 2018 1:24:23 PM

June 2011
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Last updated Monday, May 21, 2018 1:22:55 PM

May 2011
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Last updated Monday, May 21, 2018 1:28:29 PM

April 2011
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Last updated Monday, May 21, 2018 1:28:54 PM

March 2011
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Last updated Monday, May 21, 2018 1:25:40 PM

February 2011
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Last updated Monday, May 21, 2018 1:25:51 PM

January 2011
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Last updated Monday, May 21, 2018 1:25:12 PM

December 2010
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Last updated Monday, May 21, 2018 1:27:02 PM

November 2010
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Last updated Monday, May 21, 2018 1:28:45 PM

October 2010
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Last updated Monday, May 21, 2018 1:23:43 PM

September 2010
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Last updated Monday, May 21, 2018 1:28:22 PM

August 2010
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Last updated Monday, May 21, 2018 1:23:29 PM

July 2010
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Last updated Monday, May 21, 2018 1:23:38 PM

June 2010
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Last updated Monday, May 21, 2018 1:23:47 PM

May 2010
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Last updated Monday, May 21, 2018 1:29:14 PM

April 2010
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Last updated Monday, May 21, 2018 1:28:12 PM

March 2010
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Last updated Monday, May 21, 2018 1:24:30 PM

December 2009
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Last updated Monday, May 21, 2018 1:27:15 PM

November 2009
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Last updated Monday, May 21, 2018 1:27:54 PM

October 2009
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Last updated Monday, May 21, 2018 1:23:56 PM

September 2009
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Last updated Monday, May 21, 2018 1:28:38 PM

August 2009
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Last updated Monday, May 21, 2018 1:23:50 PM

July 2009
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Last updated Monday, May 21, 2018 1:23:54 PM

June 2009
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Last updated Monday, May 21, 2018 1:23:31 PM

May 2009
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Last updated Monday, May 21, 2018 1:27:47 PM

April 2009
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Last updated Monday, May 21, 2018 1:28:43 PM

March 2009
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Last updated Monday, May 21, 2018 1:26:11 PM

February 2009
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Last updated Monday, May 21, 2018 1:26:03 PM

January 2009
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Last updated Monday, May 21, 2018 1:24:50 PM

December 2008
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Last updated Monday, May 21, 2018 1:27:26 PM

November 2008
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Last updated Monday, May 21, 2018 1:28:27 PM

October 2008
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Last updated Monday, May 21, 2018 1:24:10 PM

September 2008
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Last updated Monday, May 21, 2018 1:28:53 PM

August 2008
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Last updated Monday, May 21, 2018 1:24:17 PM

July 2008
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Last updated Monday, May 21, 2018 1:24:13 PM

June 2008
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Last updated Monday, May 21, 2018 1:23:10 PM

May 2008
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Last updated Monday, May 21, 2018 1:28:10 PM

April 42008
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Last updated Monday, May 21, 2018 1:29:00 PM

March 2008
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Last updated Monday, May 21, 2018 1:25:57 PM

February 2008
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Last updated Monday, May 21, 2018 1:25:43 PM

January 2008
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Last updated Monday, May 21, 2018 1:25:34 PM

December 2007
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Last updated Monday, May 21, 2018 1:26:53 PM

November 2007
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Last updated Monday, May 21, 2018 1:28:48 PM

October 2007
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Last updated Monday, May 21, 2018 1:23:33 PM

September 2007
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Last updated Monday, May 21, 2018 1:28:25 PM

August 2007
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Last updated Monday, May 21, 2018 1:23:46 PM

July 2007
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Last updated Monday, May 21, 2018 1:23:41 PM

June 2007
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Last updated Monday, May 21, 2018 1:23:58 PM

May 2007
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Last updated Monday, May 21, 2018 1:29:05 PM

April 2007
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Last updated Monday, May 21, 2018 1:28:02 PM

March 2007
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Last updated Monday, May 21, 2018 1:24:46 PM

February 2007
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Last updated Monday, May 21, 2018 1:25:03 PM

January 2007
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Last updated Monday, May 21, 2018 1:26:08 PM

December 2006
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Last updated Monday, May 21, 2018 1:27:49 PM

November 2006
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Last updated Monday, May 21, 2018 1:27:22 PM

October 2006
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Last updated Monday, May 21, 2018 1:24:48 PM

September 2006
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Last updated Monday, May 21, 2018 1:26:20 PM

August 2006
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Last updated Monday, May 21, 2018 1:24:33 PM

July 2006
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Last updated Monday, May 21, 2018 1:24:33 PM

June 2006
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Last updated Monday, May 21, 2018 1:26:12 PM

May 2006
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Last updated Monday, May 21, 2018 1:27:10 PM

April 2006
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Last updated Monday, May 21, 2018 1:26:35 PM

March 2006
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Last updated Monday, May 21, 2018 1:23:34 PM

January 2006
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Last updated Monday, May 21, 2018 1:24:04 PM

November 2005
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Last updated Monday, May 21, 2018 1:28:40 PM

October 2005
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Last updated Monday, May 21, 2018 1:23:02 PM

September 2005
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Last updated Monday, May 21, 2018 1:27:56 PM

August 2005
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Last updated Monday, May 21, 2018 1:23:14 PM

July 2005
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Last updated Monday, May 21, 2018 1:23:04 PM

June 2005
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Last updated Monday, May 21, 2018 1:24:20 PM

May 2005
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Last updated Monday, May 21, 2018 1:28:41 PM

April 2005
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Last updated Monday, May 21, 2018 1:27:38 PM

March 2005
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Last updated Monday, May 21, 2018 1:25:22 PM

February 2005
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Last updated Monday, May 21, 2018 1:25:28 PM

January 2005
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Last updated Monday, May 21, 2018 1:25:45 PM

December 2004
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Last updated Monday, May 21, 2018 1:24:43 PM

November 2004
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Last updated Monday, May 21, 2018 1:24:06 PM

October 2004
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Last updated Monday, May 21, 2018 1:27:45 PM

September 2004
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Last updated Monday, May 21, 2018 1:22:52 PM

August 2004
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Last updated Monday, May 21, 2018 1:27:43 PM

July 2004
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Last updated Monday, May 21, 2018 1:27:40 PM

June 2004
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Last updated Monday, May 21, 2018 1:29:07 PM

May 2004
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Last updated Monday, May 21, 2018 1:24:01 PM

April 2004
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Last updated Monday, May 21, 2018 1:23:06 PM

March 2004
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Last updated Monday, May 21, 2018 1:26:55 PM

February 2004
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Last updated Monday, May 21, 2018 1:26:38 PM

January 2004
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Last updated Monday, May 21, 2018 1:27:22 PM

November 2003
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Last updated Monday, May 21, 2018 1:26:04 PM

October 2003
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Last updated Monday, May 21, 2018 1:26:55 PM

September 2003
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Last updated Monday, May 21, 2018 1:25:27 PM

August 2003
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Last updated Monday, May 21, 2018 1:27:04 PM

July 2003
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Last updated Monday, May 21, 2018 1:26:57 PM

June 2003
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Last updated Monday, May 21, 2018 1:27:17 PM

May 2003
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Last updated Monday, May 21, 2018 1:26:15 PM

April 2003
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Last updated Monday, May 21, 2018 1:25:09 PM

March 2003
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Last updated Monday, May 21, 2018 1:27:51 PM

January 2003
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Last updated Monday, May 21, 2018 1:28:55 PM

November 2002
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Last updated Monday, May 21, 2018 1:29:09 PM

October 2002
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Last updated Monday, May 21, 2018 1:23:28 PM

September 2002
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Last updated Monday, May 21, 2018 1:28:07 PM

August 2002
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Last updated Monday, May 21, 2018 1:23:18 PM

July 2002
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Last updated Monday, May 21, 2018 1:23:21 PM

June 2002
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Last updated Monday, May 21, 2018 1:24:08 PM

May 2002
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Last updated Monday, May 21, 2018 1:28:49 PM

April 2002
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Last updated Monday, May 21, 2018 1:28:33 PM

March 2002
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Last updated Monday, May 21, 2018 1:24:57 PM

February 2002
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Last updated Monday, May 21, 2018 1:24:37 PM

January 2002
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Last updated Monday, May 21, 2018 1:26:14 PM

December 2001
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Last updated Monday, May 21, 2018 1:28:02 PM

November 2001
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Last updated Monday, May 21, 2018 1:27:33 PM

October 2001
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Last updated Monday, May 21, 2018 1:25:07 PM

September 2001
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Last updated Monday, May 21, 2018 1:26:45 PM

August 2001
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Last updated Monday, May 21, 2018 1:25:20 PM

July 2001
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Last updated Monday, May 21, 2018 1:25:16 PM

June 2001
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Last updated Monday, May 21, 2018 1:25:54 PM

May 2001
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Last updated Monday, May 21, 2018 1:27:29 PM

April 2001
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Last updated Monday, May 21, 2018 1:26:52 PM

March 2001
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Last updated Monday, May 21, 2018 1:23:12 PM

February 2001
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Last updated Monday, May 21, 2018 1:22:58 PM

January 2001
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Last updated Monday, May 21, 2018 1:24:29 PM

December 2000
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Last updated Monday, May 21, 2018 1:26:46 PM

November 2000
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Last updated Monday, May 21, 2018 1:29:04 PM

October 2000
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Last updated Monday, May 21, 2018 1:23:24 PM

September 2000
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Last updated Monday, May 21, 2018 1:28:04 PM

August 2000
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Last updated Monday, May 21, 2018 1:23:16 PM

July 2000
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Last updated Monday, May 21, 2018 1:23:19 PM

June 2000
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Last updated Monday, May 21, 2018 1:24:03 PM

May 2000
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Last updated Monday, May 21, 2018 1:28:46 PM

April 2000
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Last updated Monday, May 21, 2018 1:28:31 PM

March 2000
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Last updated Monday, May 21, 2018 1:24:54 PM

February 2000
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Last updated Monday, May 21, 2018 1:24:35 PM

January 2000
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Last updated Monday, May 21, 2018 1:26:12 PM

December 1999
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Last updated Monday, May 21, 2018 1:23:51 PM

November 1999
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Last updated Monday, May 21, 2018 1:25:02 PM

October 1999
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Last updated Monday, May 21, 2018 1:27:06 PM

September 1999
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Last updated Monday, May 21, 2018 1:25:45 PM

August 1999
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Last updated Monday, May 21, 2018 1:27:14 PM

July 1999
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Last updated Monday, May 21, 2018 1:27:12 PM

June 1999
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Last updated Monday, May 21, 2018 1:26:59 PM

May 1999
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Last updated Monday, May 21, 2018 1:24:39 PM

April 1999
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Last updated Monday, May 21, 2018 1:25:47 PM

March 1999
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Last updated Monday, May 21, 2018 1:29:15 PM

February 1999
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Last updated Monday, May 21, 2018 1:28:51 PM

January 1999
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Last updated Monday, May 21, 2018 1:27:57 PM

December 1998
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Last updated Monday, May 21, 2018 1:23:07 PM

November 1998
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Last updated Monday, May 21, 2018 1:25:36 PM

October 1998
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Last updated Monday, May 21, 2018 1:26:32 PM

September 1998
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Last updated Monday, May 21, 2018 1:24:52 PM

August 1998
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Last updated Monday, May 21, 2018 1:26:27 PM

July 1998
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Last updated Monday, May 21, 2018 1:26:25 PM

June 1998
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Last updated Monday, May 21, 2018 1:27:27 PM

May 1998
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Last updated Monday, May 21, 2018 1:25:59 PM

April 1998
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Last updated Monday, May 21, 2018 1:24:40 PM

March 1998
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Last updated Monday, May 21, 2018 1:28:08 PM

February 1998
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Last updated Monday, May 21, 2018 1:28:16 PM

January 1998
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Last updated Monday, May 21, 2018 1:28:37 PM

December 1997
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Last updated Monday, May 21, 2018 1:23:26 PM

November 1997
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Last updated Monday, May 21, 2018 1:26:17 PM

October 1997
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Last updated Monday, May 21, 2018 1:26:48 PM

September 1997
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Last updated Monday, May 21, 2018 1:25:14 PM

August 1997
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Last updated Monday, May 21, 2018 1:26:37 PM

July 1997
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Last updated Monday, May 21, 2018 1:26:40 PM

June 1997
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Last updated Monday, May 21, 2018 1:27:18 PM

May 1997
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Last updated Monday, May 21, 2018 1:26:06 PM

April 1997
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Last updated Monday, May 21, 2018 1:25:31 PM

March 1997
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Last updated Monday, May 21, 2018 1:27:52 PM

February 1997
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Last updated Monday, May 21, 2018 1:27:41 PM

January 1997
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Last updated Monday, May 21, 2018 1:28:56 PM