Septic inspection, pumping, repair or replacement in Multnomah County, OR: describe your project once and contractors who work in Multnomah County get back to you. Multnomah County has about 795,897 residents (2024 estimate) and 6 incorporated cities and towns; many homes outside them rely on septic systems.
Permits for new and repaired systems are generally issued by the county or state health department serving Multnomah County.
Services available in Multnomah County
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Septic inspection
Inspection of the tank and drain field, often requested when a home is sold or by the local health department.
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Septic tank pumping
Pumping the solids out of the tank. EPA notes household tanks are typically pumped every three to five years.
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New septic system design and installation
Soil and percolation testing, system design, permit and installation for a new home or a replacement system.
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Septic repair
Diagnosis and repair of backups, odors, a failing drain field or damaged components.
Frequently asked questions in Multnomah County
Who issues septic permits in Multnomah County?
In most of Oregon, onsite wastewater permits are issued by the county or state health department. Your contractor files the application or tells you how.
Septic Services in Oregon: all counties
Source: U.S. Census Bureau, Population Estimates Program (Vintage 2024) and Gazetteer Files (public domain), imported on 10/31/2026. Figures describe the incorporated place or county as published; they are shown for information only.