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Water Supply & Source Water Protection

Water Supply & Source Water Protection

In this section

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  • Occoquan Reservoir
  • Potomac River
  • Source Water Assessment Program (SWAP)
  • Water Conservation and Drought
  • Water Supply Stakeholder Grant Program
  • Uranium Mining
  • FAQs
2
primary water sources
14,670
square miles of land in the Potomac Watershed
586
square miles of land in the Occoquan Watershed
167M
gallons processed daily on average
2
primary water sources
14,670
square miles of land in the Potomac Watershed
586
square miles of land in the Occoquan Watershed
167M
gallons processed daily on average

Protect your source water because our community depends on a reliable supply of safe, high-quality drinking water!

Did You Know? A consistent supply of high-quality source water is safer and is easier & much more cost-effective to treat.

What is source water?

Source water is a raw, untreated supply of water – typically surface water or groundwater – used for current or potential future drinking water. For Fairfax Water customers, your source water is the Potomac River or Occoquan Reservoir.

What is source water protection?

Source water protection is a proactive approach to safeguarding, maintaining, or improving the quality and/or quantity of drinking water sources and their contributing areas.

Why is source water protection important?

Water utilities rely on sustainable sources of water that can be treated to provide reliable, high-quality drinking water. Source water protection is the first of several barriers to ensure safe drinking water, followed by other components of a multi-barrier approach that includes effective water treatment, secure distribution systems, and monitoring and evaluation.

Source water protection provides many benefits, including public health protection and watershed improvements. It involves identifying potential threats to drinking water, assessing the risk associated with those threats, and establishing proactive measures that can help address them.

What can I do to help protect our source water?

There are many steps you can take to reduce pollution and protect source water.  Click the links below to learn more.

  • Around the House
  • In Your Lawn
  • During the Winter - Winter salt and its impact on Source Water
  • You can also learn more by visiting these local resources

Source Water Protection can be fun!  Check out the resources below to learn more. 

Be a source water protection hero--join the Water Ninjas and the STEAM team!  Read our Water Ninja Comicbook Series to learn more about drinking water and source water protection.

Protecting soil can also help protect source water quality.  Join Sammy Soil on a coloring book adventure. 

How does source water become tap water?  Click here to view a video of our water treatment process.  

Tips

Tip - Protect the Watershed

Limit the use of fertilizer. If you must fertilize your lawn, choose a product without phosphorous, which along with nitrogen, upsets the balance of nutrients in local waterways.

Tips

Tip - In the Bathroom

Test for toilet leaks by adding food coloring to the water tank. Don’t flush for 15 minutes. If there is color in the bowl after 15 minutes, you may have a leak.

Tips

Tip - Outdoor Tips

Shut off and drain the water lines to outside spigots in the winter. This prevents freezing temperatures from causing expensive leaks.

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Fairfax Water is exempt from Federal, State and local sales and use taxes (ID # 54-6025290)