Mission, BC onsite wastewater · new guide

Septic systems in Mission: approvals, records and property checks

Mission confirms that its city-operated sanitary sewer primarily serves the urbanized area, while many unsewered properties use onsite septic systems and a smaller number use holding tanks. Its Building Permits page states private sewerage systems may require Fraser Health Authority approval. The City lists the Fraser Health contact as 604-814-5515. Verify property connection, source records and the proper authorized-person filing process under B.C.’s Sewerage System Regulation before building or changing the system.

Before purchaseConfirm sewer or onsite
Permit officeCity of Mission sewer; Fraser Health onsite regulation
Plan work?Ask regulator first
RecordsFind original files

Check the property’s wastewater service first

Confirm the actual sewer connection before following onsite-system procedures. Citywide service boundaries alone do not establish the installation or approval status of an individual parcel.

Connected to sewer

Verify the property sewer-connection record with the municipal utility before arranging an onsite design or inspection.

Open municipal service route →

Onsite system confirmed

First check Mission’s sewer-service area and the actual lot connection. If the property has onsite sewage, the City directs private-sewerage approval questions to Fraser Health rather than assuming a municipal septic permit covers the work. Request the site plan, filing, certification and maintenance history before renovations or purchase.

Open verified local onsite-permit route ↗

Status unknown

Check seller records, utility records, health-authority / building files and the actual parcel before planning alterations.

Confirm septic versus sewer →
Municipal source check (15 October 2026): For a lot fronting a sewer main, the City publishes a Service Connection Estimate Application for a new or enlarged sanitary sewer service and separate disconnection/capping forms for demolition. These municipal services are different from Fraser Health onsite-sewage filings; check the actual lot and service history. Official municipal reference ↗

Local authority and municipal information checked October 11, 2026. Property sewer status and existing approvals still require parcel-specific confirmation.

Provincial framework: In B.C., the Sewerage System Regulation generally relies on an authorized person to plan, file and certify eligible onsite systems with the responsible health authority. That is different from assuming city hall issues a generic septic permit. View governing source →
Mission sewer-versus-onsite route and Fraser Health referral verified. The municipality/region provides an official decision route, but no permit or property service has been checked for a particular address.

Who approves onsite work near Mission?

First check Mission’s sewer-service area and the actual lot connection. If the property has onsite sewage, the City directs private-sewerage approval questions to Fraser Health rather than assuming a municipal septic permit covers the work. Request the site plan, filing, certification and maintenance history before renovations or purchase.

Records to request before purchase or renovation

  • Property sewer-service confirmation and applicable utility account details.
  • Available as-built site plan, past system permit or filing, inspections and commissioning paperwork.
  • Pump-out, service and maintenance records, plus details of any expansions or reported failures.
  • Site constraints: wells, slopes, flood-prone ground, shoreline setbacks and access for repairs.

When to seek a qualified professional

A design-capacity change, a new dwelling, significant repair, wastewater discharge problem or unknown tank condition can require professional site review and regulator contact. Never enter a septic tank. Stop using affected plumbing if sewage is escaping and obtain qualified assistance.

Official sources

Regulation and municipal starting points

Verified current authority and application source linked above. An individual site plan, permit, installation file and property sewer/onsite status were not inspected.