Boil Water Notice in Effect: Texas Water Company ordered customers served by the Canyon Lake Shores Treatment Plant to boil water before use due to flooding-related contamination risks.
Cause of the Issue: Severe flooding along the Guadalupe River swept large amounts of debris and sediment into Canyon Lake, causing turbidity levels to spike at the water intake.
Why This Matters: Turbidity can interfere with water disinfection and provide a medium for microbial growth, potentially leading to gastrointestinal illnesses. Boiling water kills harmful bacteria, viruses, and parasites.
Scope of Impact: The notice covers dozens of communities including Bulverde, Blanco water customers, River Crossing, Mystic Shores, Canyon Lake Shores, Canyon Lake Acres, Canyon Lake Island, Spring Branch Meadows, Hidden Trails, Singing Hills, and others.
Current Status: Crews are actively working to reduce sediment levels and restore normal water quality. Treatment operations are being continuously monitored, but no timeline for lifting the notice has been provided.
The boil water notice follows a period of intense rainfall and flooding across Central and South Texas. The Guadalupe River, which feeds into Canyon Lake, experienced significant flooding that carried debris, soil, and organic matter downstream. This natural phenomenon—common during extreme weather events—overwhelmed normal water treatment processes.
Turbidity measures the cloudiness or haziness of water caused by suspended particles. While not inherently toxic, high turbidity poses serious challenges:
Interferes with disinfection: Particles can shield microorganisms from chlorine and UV treatment.
Increases treatment chemical demand: More coagulants and disinfectants are needed.
Indicates potential contamination: Sediment often carries bacteria, viruses, and parasites from runoff.
The Texas Commission on Environmental Quality (TCEQ) mandates that public water systems issue boil water notices when turbidity levels exceed treatment capacity or when any condition exists that could allow contamination. This precautionary approach prevents waterborne disease outbreaks, which can affect thousands in a short period.
This region has seen repeated flooding events. In fact, last year's July 4th flood prompted investigations into improving flood sirens and cell phone alerts. The current event underscores the ongoing vulnerability of Texas water infrastructure to extreme weather.
Boil tap water vigorously for at least one minute: (or three minutes at elevations above 6,500 feet) and let it cool before using.
Use boiled or bottled water: for drinking, cooking, brushing teeth, washing food, making ice, and preparing baby formula.
For dishwashing: Use hot, soapy water and rinse with a diluted bleach solution (1 teaspoon unscented bleach per gallon of water), or use disposable plates.
For bathing: Adults can shower carefully avoiding swallowing water. Young children should be sponge-bathed.
Pets: Give them boiled or bottled water as well.
Residents in affected communities: (Bulverde, Blanco, Canyon Lake area, Spring Branch, and surrounding neighborhoods).
Elderly individuals, infants, and immunocompromised persons: are at highest risk for waterborne illness.
Businesses: including restaurants, daycare centers, and healthcare facilities must follow strict protocols.
Schools and summer programs: operating in the affected zone will need to adjust food preparation and hydration plans.
How long will the boil water notice last?
There is no confirmed timeline yet. Texas Water Company stated the notice will remain in effect until sediment levels are reduced and water meets all state drinking water safety standards. Updates will be provided as testing confirms the water is safe.
Can I use my dishwasher during a boil water notice?
Most home dishwashers do not reach the sustained high temperatures needed to kill all pathogens. It is safest to use disposable plates or wash dishes by hand using boiled water or a diluted bleach solution (1 teaspoon unscented bleach per gallon of water).
Is it safe to shower during a boil water notice?
Yes, with caution. Adults can shower carefully avoiding swallowing water. Young children should be sponge-bathed to minimize water intake.
What caused the high turbidity in Canyon Lake?
Severe flooding along the Guadalupe River carried large amounts of debris, soil, and sediment into Canyon Lake, overwhelming the treatment plant's intake area.
How do I know if my area is affected?
Texas Water Company has provided a list of affected communities including Bulverde, Blanco water customers, River Crossing, Mystic Shores, Canyon Lake Shores and numerous surrounding subdivisions. Check the company's official website or your local emergency management office for updates.
Boil all tap water: for at least one minute before drinking, cooking, or brushing teeth until officials confirm safety.
Stay informed: by monitoring Texas Water Company's official updates and local news outlets for notice status changes.
Stock bottled water: for emergency situations; keep at least one gallon per person per day for three days.
Know your risk: If you live in a flood-prone area, prepare a water safety kit including bottled water, unscented bleach for disinfection, and a portable water filter.
Report issues: If you notice unusual color, odor, or taste in your tap water, contact your water provider immediately.
Have you been affected by the boil water notice in your community? Share your experience and tips for staying safe during water emergencies.
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