One of Vancouver's most popular beach destinations is off-limits for swimming.
People can still walk along the sands of English Bay, but they're not permitted to go into the water in the current heat wave, due to high levels of E. coli bacteria.
The concentration has exceeded 400 E. coli per 100 millilitres in several measurements, according to Vancouver Coastal Health.
A single sample at this level is sufficient to trigger a warning.
There are many possible sources of this bacteria, including sewer overflows, boat discharges, and animal and wastes.
"The risk of getting sick is higher if you swallow water or get water in the nose, eyes, ears, or an open wound," Vancouver Coastal Health states on its website. "Examples of possible illness include stomach upset, ear infection, sore throat, or wound infection."
Beaches have also been declared off-limits for swimming at Snug Cove on Bowen Island at at Trail 7 at Wreck Beach due to high E. coli counts.