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Septic to Sewer Conversion in Pierce County & South King County

When city sewer reaches your street — or your septic system reaches the end of its life — converting means running a new sewer line from your house to the municipal connection and properly decommissioning the old tank. It's a real project with real permits, and it's one we handle start to finish.

A plumbing company that remembers your home.

House-to-Main Connection Permits & Inspections Handled Decommissioning Coordinated

At a Glance

Typical project: Several days, site-dependent
Includes: New line, connection & cleanout
Permits: Handled by us
Estimate: Free, on-site
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What a Conversion Involves

Locating and planning the route from your house to the sewer stub or main, permits with the city/county and sewer utility, excavation and a new code-compliant sewer line (with a proper cleanout — you get the good access from day one), the physical connection, inspections, and coordinating the septic tank's decommissioning per Pierce County health department requirements — tanks have to be pumped and properly abandoned, not just left.

When Conversion Makes Sense

Sewer has reached your street and connection is available (some areas eventually require it). Your septic system is failing and a replacement drainfield would cost as much as connecting. You're selling, and a septic near end-of-life is dragging the deal. Or you're building an addition or ADU your septic system was never sized for.

The Honest Cost Conversation

Conversions have several cost layers: our line and connection work, the utility's connection/capacity fees, and decommissioning. We quote our scope flat-rate after walking the site, and we tell you which fees come from the utility versus us — so the total is a real number, not a moving target.

Common Questions

Septic to Sewer Conversion Questions

Sewer just came to our street. Do we have to connect?

Depends on your jurisdiction — some require connection within a set period once sewer is available, others leave it optional until the septic fails. We can help you find your area's actual rule rather than guessing.

What happens to the old septic tank?

It gets pumped and properly decommissioned per county health requirements — typically crushed and filled or removed. We coordinate that step so nothing gets left buried and forgotten.

How disruptive is the excavation?

There's real digging — a trench from the house to the connection point. We route to minimize damage, keep the trench as tight as the work allows, and put things back properly.

Does the new line include a cleanout?

Always — a new sewer line without an accessible cleanout would be malpractice. You start your sewer-connected life with the good access built in.

Can you inspect my septic system?

Septic system service itself isn't our trade — but if you're weighing repair-vs-convert, we'll give you the honest sewer-side numbers so you can compare against what your septic contractor quotes.

Ready to Retire the Septic?

Free on-site estimate. Permits, connection, and decommissioning coordination handled. Call, text, or send a message.