Local Water Quality
Casselberry Boil Water Notice: What to Do, What Not to Do, and How to Recover
Sooner or later, most Casselberry households get the alert: a precautionary boil water notice for their street or neighborhood. It might follow a water main break, a pressure drop during a heavy storm, or repair work by City of Casselberry Utilities. The notice is usually lifted within a day or two, but what you do in the meantime -- and immediately afterward -- makes a real difference.
The Problem: Why Boil Water Notices Happen
Municipal water systems stay safe partly because they stay pressurized. Water constantly pushes outward through the pipes, which keeps soil, groundwater, and anything in it from getting in. When pressure drops -- because a main breaks, a pump fails, or crews shut down a section of pipe -- that protective barrier disappears. Contaminants, including bacteria, can enter through small cracks or joints.
City of Casselberry Utilities disinfects water with chloramines, but a sudden intrusion can overwhelm the residual disinfectant in the affected pipes. Until lab samples confirm the water is clean, the utility issues a precautionary notice. In Seminole County, afternoon thunderstorms, hurricane season, and ongoing growth-driven construction all make these events a regular part of life.
Why It Matters: The Risks People Overlook
Most people remember not to drink straight from the tap. Fewer remember the other ways tap water reaches the body:
Ice makers keep producing ice from affected water, and that ice sits in the bin long after the notice is lifted.
Brushing teeth with tap water counts as drinking it.
Washing produce or preparing baby formula with unboiled water carries the same risk as drinking it.
Pet water bowls get filled from the tap without a second thought.
Infants, older adults, pregnant women, and anyone with a weakened immune system face the most risk from waterborne bacteria, so households with vulnerable members should be especially careful.
The Solution: During the Notice
Boil properly. Bring water to a full, rolling boil for at least one minute, then let it cool. Store boiled water in clean, covered containers.
Use bottled water for drinking, cooking, formula, and brushing teeth if boiling isn't convenient.
Turn off the ice maker and throw out any ice made after the notice started.
Showering is generally fine for healthy adults -- just avoid swallowing water. Give young children sponge baths if they're likely to swallow bath water.
Dishwashers with a sanitizing or high-heat cycle are typically acceptable; hand-washed dishes should get a final rinse in a dilute bleach solution or boiled water.
Don't rely on a pitcher or fridge filter. Most carbon filters improve taste and reduce chlorine but are not designed or certified to remove bacteria.
The Solution: After the Notice Is Lifted
This is the step most people skip. When City of Casselberry Utilities lifts the notice, the water in the mains is safe -- but the water sitting in your home's plumbing and appliances may not be.
Flush your lines. Run cold water from every faucet for several minutes, starting with the tap closest to where water enters the house.
Flush the refrigerator dispenser for a few minutes, empty the ice bin, and discard the first few batches of ice.
Replace filters that were exposed. Fridge filters, pitcher filters, and under-sink carbon cartridges that processed affected water should be replaced. RO systems should have their pre-filters replaced and the storage tank drained and sanitized.
Run your water heater through a flush if the notice lasted more than a day or two.
Longer-Term Protection
For households that want an extra layer of protection, a UV disinfection system installed at the point where water enters the home treats bacteria and viruses continuously, independent of what's happening in the distribution system. Paired with good filtration for the 13-19 GPG hardness and disinfectant taste typical of Seminole County water, it gives peace of mind during the next pressure event.
Frequently Asked Questions
How will I know if my area is under a boil water notice?
City of Casselberry Utilities posts notices through its website, local news, social media, and county emergency alert systems. Signing up for Seminole County emergency alerts is the most reliable way to get notified quickly.
Can I use a water filter instead of boiling?
Only if the filter is specifically certified to remove bacteria and viruses. Standard carbon filters, pitcher filters, and refrigerator filters are not. When in doubt, boil or use bottled water.
The H2O Heroes helps Casselberry families put post-notice cleanup and long-term treatment on autopilot, from filter replacements to UV systems. If you're unsure whether your equipment needs attention after the last notice, reach out and we'll take a look.