How does a septic tank work — Costa Mesa, CA

Last updated: September 24, 2026

What affects the price

The final bill for septic work depends on a few specific variables. First, the size of your tank and the total volume of waste removal play a role. We also look at the accessibility of your tank lids; if they are buried deep underground or hidden under landscaping, extra labor is required to reach them. The distance from our truck to the tank also impacts the setup time. Every property has unique plumbing needs, and exact pricing is confirmed free on the call.

About this service

At its simplest, a septic tank is an underground chamber that collects all the water leaving your home. Solids settle to the bottom to form sludge, while grease and oils float to the top as scum. The liquid in the middle flows out into the drain field for natural filtration through the soil. Bacteria inside the tank naturally break down the solid waste, but the system relies on you to manage what goes down the drain to keep it healthy.

Frequently asked in Costa Mesa

Also serving nearby: Santa Ana · Huntington Beach · Westminster · Irvine · Garden Grove

All cities in California →

More on this: EPA SepticSmart — maintenance schedules.

Service area details

Serving all of Costa Mesa — population 108,354; about 6,855 residents per square mile across 15.8 sq mi. ZIP codes covered include 92626, 92627, 92628.

Neighborhoods served in Costa Mesa: Mesa North, Mesa South, South Coast Metro, Lido Isle (nearby, shared services), Park Place — and every surrounding area.