What to Do During a Boil Water Advisory in Columbia SC

Key Takeaways

• During a boil water advisory in Columbia SC, bring tap water to a rolling boil for one full minute before using it to drink, cook, make ice, brush teeth, or wash produce.
• Showering and bathing are generally fine for adults, since you are not swallowing the water, but keep it out of the mouth and supervise young children closely.
• A boil water advisory is a precaution after a main break or pressure loss, while a boil water notice means contamination is confirmed. Treat both the same way and boil your water.
• Once the advisory lifts, flush water lines by running every cold tap for several minutes, dump old ice, replace filters, and flush your water heater if water was discolored.
• Columbia and West Columbia issue advisories several times a year, usually tied to water main breaks, so it pays to know the routine before one hits.
• If your water stays discolored, gritty, or low-pressure after you flush and the advisory has lifted, that points to a plumbing issue worth a call to a local plumber.

A boil water advisory in Columbia SC means you should boil your tap water before drinking or cooking, and a boil water advisory is more common here than you might think. The quick answer is simple: bring it to a rolling boil for one full minute, let it cool, and use that for drinking, cooking, ice, brushing teeth, and washing produce. Showering is generally fine for adults as long as you do not swallow the water.

The advisory is almost always issued after a water main break or a drop in line pressure, and once it lifts you flush your lines by running your cold taps. If your water stays discolored after that, it is worth a call to a plumber.

I am Manny Anderson, a licensed master plumber, and our team at Plumb Time has served Columbia, West Columbia, and the Midlands for over 28 years, including the cleanup calls that follow a boil water advisory. A boil water advisory Columbia SC residents receive comes around several times a year, so this guide walks through exactly what a boil water advisory is, what is safe and not safe to do during an advisory, how it differs from a boil water notice, the steps to take once a boil water advisory lifts, and when discolored water afterward means you should call a pro.

What Is a Boil Water Advisory?

A boil water advisory tells you the tap water in your area may be unsafe and should be boiled before you drink or cook with it. The City of Columbia issues one when something could have let bacteria or debris into the distribution system, most often a water main break, a significant loss of pressure, a line repair where dirt entered the pipe, or ahead of a hurricane. An advisory is a precaution, issued before testing confirms anything, because results take about a day and the city would rather warn you early than late.

Here in the Midlands, a boil water advisory is not rare. Columbia and West Columbia both issue them several times a year, usually tied to aging mains breaking. West Columbia alone posted advisories multiple times in early 2026. That frequency is exactly why it helps to know the boil water advisory drill in advance, so when the alert hits your phone you already know what to do instead of scrambling.

How to Boil Your Water Safely

Boiling during a boil water advisory is simple, but doing it right matters. Fill a pot with cold tap water, put it on the stove, and bring it to a true rolling boil, the kind where big bubbles break the surface continuously and cannot be stirred away. Once it reaches that point, let it boil for one full minute. Then turn off the heat and let the water cool on its own before you use or store it.

This one-minute rolling boil is the standard the CDC recommends for killing bacteria, viruses, and parasites. Boiled water kept in a clean, covered container stays safe to drink, so it helps to boil a few batches at once and keep them in the fridge.

Two things trip people up. First, a filter does not replace boiling. Most home and fridge filters do not remove bacteria, so you still boil even filtered water during an advisory. Second, boiling only handles germs, not chemicals. If your advisory is ever a do-not-drink or do-not-use notice tied to a chemical issue rather than a bacteria risk, boiling will not make that water safe, and you should switch to bottled water and follow the specific instructions in that notice.

What Is Safe and Not Safe During a Boil Water Advisory

The single rule that covers almost everything: if the water is going into your body, boil it first or use bottled. If it is not, you usually have more leeway. Here is how that plays out around the house during a boil water advisory.

A common question is whether it is safe to shower during a boil water advisory. For healthy adults and older children, yes, a normal shower is fine as long as you avoid swallowing the water and keep it out of your mouth. Be more careful with infants and toddlers who might gulp bath water, and consider a sponge bath with boiled or bottled water for them. The same caution applies to anyone with open wounds or a weakened immune system, who should keep advisory water away from broken skin.

Boil Water Advisory vs Boil Water Notice

You will see two terms used, and the difference is real even though your response is the same. An advisory is precautionary, issued when conditions could have let contamination in, like a main break or pressure loss, before any testing confirms a problem. A boil water notice is more serious, issued when testing has actually confirmed pathogens in the water. Either way, you boil your water until the city lifts it. Think of the advisory as better safe than sorry, and the notice as a confirmed problem. The City of Columbia Water uses these same definitions and posts every active advisory and repeal.

What to Do After the Advisory Is Lifted

When the city lifts the boil water advisory, your water is declared safe again, but the water sitting in your home pipes and appliances is still the old, potentially affected water. After a boil water advisory, a few simple steps clear it out so you are not drinking what was in the lines during the event. This aftermath cleanup is the part most people skip after a boil water advisory, and it is exactly where a little plumbing know-how pays off.

Flush Your Water Lines

Start by taking time to flush water lines throughout your home. Run each cold water faucet on full for at least five minutes, working from the faucet closest to where your water enters the house outward. Do the kitchen, bathrooms, tub spouts, and any outdoor spigots. This is how you flush water lines properly: it pushes the old water out and pulls fresh, treated water in.

If your water comes out cloudy or discolored at first, that is normal sediment stirred up by the main work, and it should clear as you flush. The city advises running taps for two to three minutes if discoloration lingers, and contacting them if it does not clear.

Clear ice, filters, and appliances

Dump all the ice your icemaker produced during and shortly after the boil water advisory, then run and discard two or three fresh batches. Replace any drinking water filters in your fridge or on the tap, since they may have caught contaminants. Run your dishwasher empty on a hot cycle once, and flush water-using appliances like the coffee maker by running them with fresh water. These steps make sure nothing holds onto the old water.

Flush the water heater if water was discolored

Your water heater holds many gallons, so if the advisory came with discolored or sediment-heavy water, some of that debris can settle in the tank. Draining and flushing the heater clears it out and protects the unit. This is a straightforward job for a plumber, and a good moment to have the heater checked if it has not been flushed in a while, since sediment buildup shortens its life anyway. If you would rather not tackle the drain valve and connections yourself, it is an easy service call.

When to Call a Plumber After an Advisory

Most of the time, after a boil water advisory flushing your lines fixes everything and you move on. But sometimes a main break and the pressure swings around it stir up problems in your own plumbing, and those do not clear on their own. Here is when the issue has moved from city water to your pipes, and a call makes sense.

None of these are emergencies, but they are signs the boil water advisory left something behind in your plumbing that a flush did not reach. A plumber can clear sediment from your lines, clean or replace clogged aerators and valves, and flush the water heater, so your water goes back to clear and full-pressure. If you are in the Columbia area, you can see our full range of plumbing services and the areas we serve across the Midlands.

Stay Ready for the Next Boil Water Advisory in Columbia SC

Because Columbia and West Columbia issue these advisories several times a year, a little preparation makes each boil water advisory a non-event. Keep a few gallons of bottled water on hand, sign up for your city’s water alerts so you hear about an advisory the moment it is issued, and keep this routine in mind: boil while it is active, flush your lines when it lifts, and call a plumber only if your water does not come back clear.

For official guidance during any event, the SC Department of Environmental Services and your local water utility are reliable references, and your specific advisory will always include the exact instructions to follow.

A simple prep kit pays off

Keeping a small kit ready turns each boil water advisory into a minor inconvenience. Stash a case of bottled water in a closet, note where your main shutoff is, and keep a clean pot set aside that you can fill and boil quickly. Sign up for text alerts from the City of Columbia or West Columbia so you learn about an advisory the moment it is issued rather than after you have already had a glass of tap water.

None of this takes more than a few minutes to set up, and it means you are never caught off guard when a main breaks across town.

Plumb Time Plumbing and Drains has helped Columbia, West Columbia, Cayce, Oak Grove, Seven Oaks, St Andrews, and the wider Midlands with post-advisory cleanups and every other plumbing need for over 28 years, with a master plumber on every job. When the water does not come back the way it should, we are a local call away.

Boil Water Advisory FAQs for Columbia SC

Still have questions about what to do during a boil water advisory in Columbia or West Columbia? These are the questions homeowners ask us most often, from whether it is safe to shower to how to flush your lines once the advisory lifts. If your water is still not right after an advisory ends, call us at (803) 988-9202 and we will help you sort out what is going on.