Fire Hydrant Flow Test Request

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Loudoun Water hydrant flow tests are conducted to measure water flows and pressure in the water system. Hydrant flow tests are required primarily for fire sprinkler design and insurance purposes. 

Loudoun Water recommends modeling new developments using a supply reservoir with an elevation set to the low HGL of the pressure zone. Hydrant flow tests will be used as confirmation of local system characteristics as needed.

Loudoun Water has an online map with existing flow test reports.  You are encouraged to verify that no existing flow test meets your needs prior to completing this form.  Loudoun Water no longer provides existing flow tests and assumes the completion form is authorization to invoice you for a new flow test.

Interactive Map of Existing Flow Test Reports

With the completion of this form, you are requesting Loudoun Water to perform a flow test.   Fire flow tests cost $350 and take approximately 4 weeks to complete upon receipt of invoice payment.  Loudoun Water payment options can be found via link below.  Please include your invoice number with payment to avoid delay in processing.

Development Invoice Payment Options |


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