Can I drink the lake or creek water at my BC cottage?
You may take unrecorded water from a lake or creek for your household without a licence, but nobody checks it: you are your own water supplier, and it should be treated before anyone drinks it.
Opens the lot's report at this answer. If an address isn't found, try the PID, the 9-digit parcel number on the land title or assessment notice.
What the answer means
Many BC cottages and rural homes pump their water straight from a lake or creek. The Water Sustainability Act lets a household take water it doesn't hold a licence for, within limits, but no one inspects a system serving one home: the owner decides how to make it safe, and lake and creek water carries germs, and sometimes algae toxins, that a well's water usually doesn't.
- Taking the water
- No one may divert water from a stream without a licence or use approval unless the Act or its regulations allow it (Water Sustainability Act s. 6 (1)), and a stream includes a lake, pond, river, creek or spring (s. 1). A person may divert and use unrecorded water from a stream for domestic purpose (s. 6 (3)), unless a regulation closes or restricts that source.
- What counts as household use
- Domestic purpose is household use by the occupants of private dwellings on one parcel: drinking, food and sanitation, fire prevention, water for animals or poultry kept for household use or as pets, and a garden of up to 1,000 m² beside the house (s. 1). Water for a neighbour, a rental cabin business or a hay field goes past it (our reading; see water licences).
- Recorded water
- Unrecorded water is water not already recorded under licences (s. 1). Where the licences on a lake or creek take all of its water, s. 6 (3) gives nothing to divert, and whether that's so is a question for FrontCounter BC (our reading).
- A licence of your own
- A domestic licence gives a precedence date: when there isn't enough water, licences rank by date, older first, and by purpose, domestic first (ss. 7, 22). Taking water without one gives no rank against licensed users (our reading). A licence attached to the land passes to the buyer (s. 25; see water licences).
- Nobody inspects it
- The Drinking Water Protection Act regulates water supply systems, which leave out a system serving only one single-family residence (s. 1). Interior Health calls a well or surface water intake serving one home private drinking water, with minimal regulatory oversight: the homeowner is responsible for making the water safe for drinking, cooking and household sanitation, and must keep monitoring the source.
- Germs in the water
- HealthLink BC says water from lakes, rivers or streams may carry bacteria, viruses and parasites such as Campylobacter, Salmonella, Giardia and Cryptosporidium, and that you may need to disinfect your own water when you are on your own supply. Interior Health says surface water sources should be tested and disinfected.
- Making it safe
- HealthLink BC calls boiling for at least one minute (two above 2,000 m) the most effective way to disinfect water. Household bleach works at 2 drops a litre, standing 30 minutes, doubled for cloudy or cold water; cloudy water should be cleared first, as it weakens a disinfectant. A jug filter isn't made to remove germs: use a treatment device certified to kill or remove them (see treating well water for the certifications).
- Algae toxins
- Some cyanobacteria (blue-green algae) blooms make toxins. Interior Health says boiling will not remove them, and during a bloom to consider another source of drinking water for people, pets and livestock. Blooms can be reported to the Province's Algae Watch.
- Chemicals
- HealthLink BC says boiling or bleach doesn't make heavily contaminated water safe, as neither removes chemicals: another source is needed.
- What it means for a buyer
- A report lists the lakes and creeks mapped within 30 m of the lot, the drinking-water intakes and licensed springs within 300 m and, for a sampled lake, its clarity and algae record. None of that says the water is safe to drink: test the treated water at the tap (see testing a well, which works the same way).
Our summary of the Water Sustainability Act (SBC 2014, c. 15, ss. 1, 6, 7, 22, 25) and the Drinking Water Protection Act (SBC 2001, c. 9, s. 1) on BC Laws, Interior Health's drinking water page and HealthLink BC File #49b, Disinfecting Drinking Water (updated July 25, 2025), read 2026-10-23. Other health authorities give the same advice in their own words.
Sources (read 2026-10-23; summarised in our own words unless noted): Water Sustainability Act, SBC 2014, c. 15 (ss. 1, 6, 7, 22, 25); Drinking Water Protection Act, SBC 2001, c. 9 (s. 1); Drinking Water, Interior Health; HealthLinkBC File #49b, Disinfecting Drinking Water.
Before you buy: who to ask
- The seller or their agent
- Where does the house take its water, through what intake and treatment, and when was the treated water last tested? Is there a water licence, and what is its number?
- FrontCounter BC
- Is this lake or creek fully recorded, and would a domestic licence be granted here?
- The health authority
- Is there any advisory on this lake, and which labs test drinking water nearby?
Look up the lot above: its report lists the water mapped within 30 m, the intakes and licences near it and, for a sampled lake, its record.
See also water licences, treating well water, testing a well, lake water quality, docks and the foreshore and drinking water advisories.
Buying rural land? Before you buy rural land in BC: the nine questions that decide an offer, on one printable page.