Whatcom County Sheriff's Office issued two alerts on July 24, 2026, warning residents about harmful algae blooms in Lake Whatcom. The alerts note that warmer temperatures and nutrients in the water can cause blue-green algae to grow rapidly. Some blooms produce toxins that can make people and pets severely ill. Residents with private drinking water systems drawing from Lake Whatcom are specifically advised to be aware of potential harmful algae blooms. The county recommends staying out of water with visible algae blooms and consulting the county's website for current water quality monitoring results. The alerts were posted on July 24, 2026, with no specific timeline for when blooms might subside.
Harmful Algae Blooms Advised in Lake Whatcom
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📄 Source: Whatcom County Sheriff — http://whatcomcounty.us/RSSFeed.aspx?ModID=1&CID=Sheriff-18/
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- ⚠Whatcom County Sheriff's Office issued two alerts on July 24, 2026No usable supporting receipt — unverified.
- ✓The alerts were about harmful algae blooms in Lake Whatcom“For Residents with Private Drinking Water Systems on Lake Whatcom — Fri, 24 Jul 2026 16:49:21 -0800 Summer is here and so are conditions that lead to periodic algae blooms. If you get your drinking water directly from Lake Whatcom through your own private drinking water system, you should be aware that Harmful Algae Blooms can occur in Lake Whatcom.”
- ✓The alerts note that warmer temperatures and nutrients in the water can cause blue-green algae to grow rapidly“Summer is in full swing! Warmer temperatures and extra nutrients in the water can cause blue-green algae to grow rapidly at this time of year.”
- ✓Some blooms produce toxins that can make people and pets severely ill“While not all algae blooms are dangerous, some can produce toxins that can make people and pets severely ill.”
- ✓Residents with private drinking water systems drawing from Lake Whatcom are specifically advised to be aware of potential harmful algae blooms“If you get your drinking water directly from Lake Whatcom through your own private drinking water system, you should be aware that Harmful Algae Blooms can occur in Lake Whatcom.”
- ⚠The county recommends staying out of water with visible algae bloomsNo usable supporting receipt — unverified.
- ✓The county recommends consulting the county's website for current water quality monitoring results“Visit our website to access the most current fecal bacteria water quality monitoring results.”
- ⚠The alerts were posted on July 24, 2026No usable supporting receipt — unverified.
- ⚠The alerts mention no specific timeline for when blooms might subsideNo usable supporting receipt — unverified.
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