Second-High Pressure Zone Expansion Project

Fairfax Water Announces System Improvements for Customers Impacted by Second-High Pressure Zone Expansion Project 

We are pleased to announce that much-needed system improvements will be implemented in our Second-High Pressure Zone this summer. This impacted area was formerly served by the City of Falls Church water system.  The pressure zone changes will impact some customers along the Kirby Road and Haycock Road corridors in the McLean and Falls Church areas of our system.

UPDATE: The pressure changes occurred between August 9 and August 13, 2021.

If you are a residential customer and received a letter from Fairfax Water regarding the need for a PRV, click here. If you live within the zone but did not receive a letter, you do not need a PRV. 

Why are these system improvements necessary?  

The impacted area was formerly served by the City of Falls Church water system.  These areas currently experience delivery pressures that are lower than those typically experienced elsewhere in Fairfax Water’s system. Over the past five years, Fairfax Water has been planning, designing and constructing system improvements to allow for an expansion of our Second-High pressure zone.  

Will my home be impacted?  

Many customers within the impacted area will experience either a welcome increase in pressure or they may not notice a change in the pressure at all. To determine if your home is within the impacted area, type your address in the search bar in the upper right-hand corner of the map below. Please note: Not all customers in this area will need a PRV.  Customers who did not receive a PRV letter and live within blue and pink areas in the map below are not expected to see pressure over 80 PSI, therefore they do not need a PRV. 

I received a letter about my home possibly needing a PRV. What is a PRV and why would my home need one? 

In some cases, customers in the area may experience a higher than desired pressure or greater than 80 pounds per square inch (PSI).  This may result in the need for a Pressure Reducing Valve (PRV).    

We have identified those customers who may experience water pressure greater than 80 PSI and mailed letters to them containing further information.  If you have received one of these letters, please click here for more information.    

Customers who did not receive the letter and live within the highlighted areas in the map above are not expected to see pressure over 80 PSI.  

Questions?  

If you have any questions, please feel free to contact Fairfax Water’s Customer Service Department.