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Cistern for an Acreage in Alberta: Size, Rules and Cost
A cistern is a sealed storage tank for household water. On Alberta acreages it does one of two jobs: it stores hauled water where there is no well, or it buffers a low-yield well so the house has enough water at peak times. This guide covers sizing, the siting rules, keeping the water safe, and what to budget.
How big a cistern do you need?
The province's Working Well program puts it this way: "A 15,000 L or 3,300 Imperial gallon cistern will store enough water to meet the demand of an average household of four for two-to-three months." It adds that some situations, such as a low-yield well, need smaller storage (Working Well, Maintaining Your Cistern, August 2019).
Size from your own situation:
- Hauled water only: storage sets how often you pay for a delivery. Bigger tanks mean fewer trips but more water sitting for longer, which is why regular disinfection matters.
- Backing up a low-yield well: the cistern fills slowly between uses and supplies peak demand. A well that produces 2 to 3 imperial gallons per minute is enough for most households on its own, according to the province's well-drilling fact sheet; below that, storage makes up the difference.
- Fire protection or livestock: add that volume separately. Do not count on household storage for either.
Siting and construction rules
- The Canadian Standards Association's CSA B126 Series-13, Water Cisterns sets design, materials, installation and decommissioning standards.
- Under that standard a cistern must be at least 10 m from a septic tank and 15 m from a septic field or other contamination sources such as livestock facilities and chemical storage.
- Acceptable materials are steel, concrete, fiberglass or polyethylene. A cistern needs an access point at ground level, a water-tight lid, a fill port and a vented overflow pipe.
All three points are from the province's Working Well cistern fact sheet. Check the septic setbacks against your system too: see septic rules and setbacks in Alberta.
Keeping the water safe
A cistern is a private water supply, so the homeowner is responsible for it. The Working Well fact sheet says to:
- hire only an approved water hauler to deliver treated water; Alberta Health Services issues permits to water haulers and inspects their equipment
- keep a free chlorine residual of 0.2 mg/L
- sample the water for bacteria one to two times a year
- clean the cistern every year
Alberta Health Services gives step-by-step cleaning and disinfection instructions.
What a cistern costs
No government body publishes cistern prices, and we have not found two reliable published Alberta figures that agree. As a planning figure only, Land Intelligence's own August 2026 market compilation for the Edmonton area puts a cistern at $5,000 to $20,000 installed, depending on size, material, excavation and whether a pump and pressure system are included. It is an estimate, not a quote. Get at least two written quotes that list the tank, excavation, bedding, pump, plumbing and electrical separately.