About Hydrant Permits

Hydrant Permits allow inspected and approved customer water tank trucks/trailers to access predetermined hydrants throughout TVWD's service area. These hydrants are designated with green painted caps/tops. To learn more about obtaining a hydrant permit, see our FAQ section below.

Unauthorized hydrant use and/or use of a non-approved (un-inspected) tank is subject to the penalties listed in our Bulk Water Rates.

 

Green Cap Hydrant

Green cap identifies hydrants which permitted tanks may fill from.

Hydrant Wrench

Hydrant Wrench - TVWD requires only hydrant wrenches be used to operate hydrants.  A hydrant wrench must accompany the vehicle/tank at the time of inspection.

Chapman Gate Vavle

Chapman (gate) valve - TVWD requires chapman valves be used to regulate flow from its hydrants.  A chapman valve must accompany the vehicle/tank at the time of inspection.

Approve Air Gap 1

Photo of an approved air gap.

Approve Air Gap 2


Photo of an approved air gap.

Failed Air Gap 1

This tank did not pass inspection.  The fill pipe extends into the tank and there is no air gap separation.  Modification were required.

Failed Air Gap 2

This tank did not pass inspection.  Although an air gap exists, it does not meet the State and TVWD requirements to be twice the distance of the diameter of the fill pipe. Modifications were required.


 

Frequently Asked Questions

Vehicle/Tank inspections for Hydrant Permits are by appointment only on select days during normal business hours at TVWD Headquarters.

Payment for a truck/tank inspection must be made either prior to the appointment over the phone or provided to a TVWD Representative while on site.

Upon successful completion of the payment, the permit placard will be provided to the driver who can then exit TVWD Headquarters and begin access to bulk water at designated "green cap" hydrant locations only. A map will be provided.

TVWD strictly adheres to approving permits for tanks with proper air gaps.  An approved air gap will have a physical separation between the free flowing discharge end of a potable water supply pipeline and an open or non-pressure receiving vessel/tank. The approved air-gap separation shall be as least twice the diameter of the supply pipe measured vertically above the overflow rim of the tank.  A 2-1/2 inch fill pipe will require, at minimum, a 5 inch distance from the very end of the fill pipe to the highest portion of the fill tank opening.

Each water tank truck or trailer must possess its own hydrant wrench and a chapman (gate) valve.  Both these items must  present at the time of inspection.

When filling, install the chapman valve with the valve closed.  Using only a hydrant wrench, open the hydrant valve fully.  Use the chapman valve to regulate the flow. After filling has been completed, close the chapman valve, then close the hydrant valve.  Do NOT over tighten the hydrant valve.

Inspected and permitted tanks may only access water from TVWD's green cap hydrants.  A map will be provided during the inspection.

TVWD only offers 12-month hydrant permits.

Water usage does not need to be tracked or reported.

Permit placards must be visibly displayed when accessing bulk water.

It is the responsibility of the permit holder to renew the bulk water permit prior to the expiration date.  Filling from a hydrant with an expired permit will be considered unauthorized hydrant use and subject to the related fines.

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