How to find buried water tanks in Washington

Dredged water tanks are a common sight on Capitol Hill, where they can hold up to 1,000 gallons of water.

But digging them out can take weeks, and the cost can top $500,000.

Here are five tips to get you started.


Look at the location.

Many of the tanks are located along Capitol Hill’s east side, which has a steep slope.

Look for the location of a large underground pit.

If you’re lucky, you’ll find a large hole or a shallow pit that’s not too deep.


Check out the plumbing.

Most underground tanks will be in good shape and will have pipes, pumps, and other equipment that can be reused.

You may have to drill out a few inches of soil to get a good idea of what’s inside.


Check the water level.

Dredging out a tank can be expensive, so it’s worth checking to see how much water is in the tank.

The Washington Metropolitan Sewer District says it’s common for a tank to hold 1,300 gallons, and that some wells hold up a little more than 400 gallons.

If the water is less than that, you may have a leaky tank or water heater.


Ask the contractor.

If there’s no one available to help dig out your tank, you should ask for help from a contractor who specializes in the work.

They’re usually cheaper than a contractor hired by a government agency.

Ask your contractor for a quote.


Buy a water heater, water pipe, and a drill press.

You can use a drill or drill bit to dig out a hole or find a small hole in a building, but a water pump and a water boiler are the best tools.

The water will run off of the drill press, so you’ll want to use a pump or other source of water when digging a hole.

If you’ve already dug out a leak, your contractor can repair it with a new water tank.

If your water heater is leaking, you might need to buy a new one.

If you’ve been digging holes for a long time, the contractor may not be able to fix them quickly.

For more information about how to dig a hole, see our guide to digging out a water tank in Washington.