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Test pits (commonly called perc holes) are needed to determine what type of soils are at your property and to determine the depth to the restrictive layer. We do not provide the soils analysis aka "perc testing", but we can refer you to several good

In order to get a bid from us, you'll need to have a septic system design. If you're looking for good septic system designer, please visit the links below, or contact us for referrals.     Clark County (PDF). Cowlitz County.

Does your septic tank need to be pumped? Seppanen Construction, LLC does not offer septic tank pumping. We're happy to offer a recommendation for this task. Visit the county of your residence below for more information. Clark County (PDF). Cowlitz County.

Seppanen Construction, LLC is certified to install septic systems and does not currently offer inspection services. Please contact us if you need help finding someone to inspect your septic system, or visit the site for the county of your residence below. Clark County (PDF). Cowlitz

Here in the Northwest, having good and reliable underground utilities is critical. Seppanen Construction will look to accomplish that for you, whether it be through gas trenching, installing a water line, or any of our many underground services. There are several underground utilities we are

Is your house currently on a septic system and would you like to connect to the public sewer service? We can take care of properly abandoning the existing septic system and making the connection to the public sewer system. Are you interested in converting

Septic Systems must be done right the first time. We will properly install your septic system to ensure years of trouble free service and promote ease of maintenance. We are certified and competent to take on the most challenging sites. Do I need a septic

You most likely have water leaking into the system somewhere. Do not adjust the timer settings above what they are supposed to be set at. This will a) overload the system, causing it to fail, and b) void any warranty that the system may have.

-First, determine if your pump is operated by a control panel or by demand with a float switch. -If by demand, check to see if the breaker is tripped. Check to see if there is power at the pump. If there is power try to