Water Quality Analytical Reports - Fairfax Water Service Area

These reports contain water quality test results for a number of Inorganic and Metals parameters for Fairfax Water's source and treated waters, distributed by Fairfax Water. Many of the parameters listed in these reports are commonly requested data from our customers. Examples of these common parameters are pH, Chlorine, Alkalinity, Hardness, and Lead.

Additional information: Water Quality FAQs | Lead | Chromium | PFAS | Fluoride

If your residence is located more to the north end of the county, it will generally receive water from the Corbalis Treatment Plant and more southern locations from the Griffith Treatment Plant.

Northern Fairfax County - Inorganic and Metal Parameters
Sample Site	Data by Year
Distribution Site Representing Northern Treatment Facilities	2003 \| 2004 \| 2005 \| 2006 \| 2007 \| 2008 \| 2009 \| 2010 \| 2011 \| 2012 \| 2013 \| 2014 \| 2015 \| 2016 \| 2017 \| 2018 \| 2019 \| 2020 \| 2021 \| 2022
Potomac River - Corbalis Water Treatment Plant Source	2003 \| 2004 \| 2005 \| 2006 \| 2007 \| 2008 \| 2009 \| 2010 \| 2011 \| 2012 \| 2013 \| 2014 \| 2015 \| 2016 \| 2017 \| 2018 \| 2019 \| 2020 \| 2021 \| 2022
Corbalis Treatment Plant Finished Water	2003 \| 2004 \| 2005 \| 2006 \| 2007 \| 2008 \| 2009 \| 2010 \| 2011 \| 2012 \| 2013 \| 2014 \| 2015 \| 2016 \| 2017 \| 2018 \| 2019 \| 2020 \| 2021 \| 2022

Southern Fairfax County - Inorganic and Metal Parameters
Sample Site	Data by Year
Occoquan Reservoir - Griffith/Lorton/Occoquan Water Treatment Plant Source	2003 \| 2004 \| 2005 \| 2006 \| 2007 \| 2008 \| 2009 \| 2010 \| 2011 \| 2012 \| 2013 \| 2014 \| 2015 \| 2016 \| 2017 \| 2018 \| 2019 \| 2020 \| 2021 \| 2022
Distribution Site Representing Southern Treatment Facilities	2003 \| 2004 \| 2005 \| 2006 \| 2007 \| 2008 \| 2009 \| 2010 \| 2011 \| 2012 \| 2013 \| 2014 \| 2015 \| 2016 \| 2017 \| 2018 \| 2019 \| 2020 \| 2021 \| 2022
Griffith Treatment Plant Finished Water	2006 \| 2007 \| 2008 \| 2009 \| 2010 \| 2011 \| 2012 \| 2013 \| 2014 \| 2015 \| 2016 \| 2017 \| 2018 \| 2019 \| 2020 \| 2021 \| 2022
Lorton Treatment Plant Finished Water	2003 \| 2004 \| 2005 \| 2006
Occoquan Treatment Plant Finished Water*	2003 \| 2004 \| 2005 \| 2006 \| 2007

* The Lorton Water Treatment Plant ceased operations in 2006, the Occoquan Water Treatment Plant ceased operations in 2007. They were replaced by the Griffith Water Treatment Plant.