14 Years of Service and Quality

BIA of Clark County

Septic System Services

Areas We Serve

  • Clark County, WA
  • Battle Ground
  • Camas
  • Hazel Dell
  • Orchards
  • Ridgefield
  • Vancouver
  • Wahkiakum County, WA
  • Cathlamet
  • Grays River
  • Puget Island
  • Cowlitz County, WA
  • Castle Rock
  • Cougar
  • Kalama
  • Kelso
  • Longview
  • Ryder
  • Woodland
  • Yale
  • Skamania County, WA
  • North Bonnevile
  • Stevenson

Do I need a septic system?

Septic systems are used in areas where a community sewage system is not available. Check with your local authorities to find out if you have a sewer in your area. If not, you'll need a septic system. Unless, that is, you're content with an outhouse.

What types of septic systems are there?

The modern septic system has come a long way from a ditch and a pipe. We can install everything from basic septic tank and drainfield septic systems to the most advanced pre-treatment alternative septic systems. Here is a partial list of some of the septic systems we can install with links so you can learn more about them.

  • AdvanTex - Pretreatment filteration system - we are an AdvantTex-certified installer
  • BioRobix - Aerobic treatment unit - we are a BioRobix-certified installer
  • Glendon BioFilter - Upflow pretreatment system - we are a Glendon BioFilter licensed installer
  • MicroFAST - Aerobic system (no certification required to install)
  • White Water - Aerobic system (no certification required to install)

Here is some other good information about septic systems and codes.

Perc/Test Holes (Septic Test Pits)

If you are required to get a perc/test hole for a septic system analysis we can do that for you. Let us know!

What's wrong with my septic system?

There are many things that can go wrong with a septic system. If you have a problem, take a look at our Frequently Asked Questions page.

What if I currently have a septic system and want to convert to a city or county sewer?

We can do septic-to-sewer conversions. Take a look at our septic to sewer conversions page.

View our On Site Septic Systems (OSS) page to learn more information about these septic systems.

Can you recommend a good septic designer?

You bet we can! We've been working in the industry for 14 years, and have experience with many of the best septic designers in the area. Check out the lists below.

Have questions about your septic system? Check out our FAQ.

Seppanen Construction, LLC
La Center, WA
(360) 263-7950
Washington: SEPPACL974JC
Oregon: CCB 155619