Serving the Cowichan Valley Regional District
Septic Service Across Rural Duncan and the Cowichan Valley
The short answer
The septic market around Duncan is the rural acreages beyond the sewered downtown — Glenora, Sahtlam, Cowichan Station, and Maple Bay — where heavy clay and high water tables shape every system. Duncan Septic Systems installs, repairs, pumps, and inspects these systems, typically $250 to $500 for a pump-out and $15,000 to $45,000 for a new system, all filed with Island Health.
Around Duncan, pump-outs run $250 to $500 and new systems $15,000 to $45,000, depending on soil and system type.
Rural Duncan runs on septic
Downtown Duncan is on municipal sewer, but the acreages that ring it — Glenora, Sahtlam, Cowichan Station, and out toward Maple Bay — are almost all on private septic. Duncan Septic Systems works these rural properties, where soil, slope, and well setbacks decide what a system needs.
Clay soils and the valley floor
The heavy clay across much of the Cowichan Valley floor drains slowly, so many Duncan-area lots need a Type 2 treatment system rather than a simple gravity field, and older conventional systems here are often the first to see their drainfields wear out.
Filed with Island Health
Every new or replacement system on a Duncan-area property is designed, filed with Island Health, and certified under the Sewerage System Regulation. A free assessment confirms the system type a specific acreage needs.
For septic work on any rural property around Duncan, request a free on-site assessment.
Ready for a septic systems quote in Duncan?
Duncan Septic Systems offers free on-site assessments across the Cowichan Valley Regional District.