How to Clean Black Ring Under Toilet Rim

Cleaning the toilet bowl is simple, but what about the rings around the rim? These rings are not only unsightly, but they can also actually cause health problems if left untreated. The ring around the rim may be caused by mineral deposits in your water or hard water buildup. 

Removing bathroom stains is a challenge. No matter what products you use to clean your home, you’ll often find black rings under the toilet rim. If you want to get rid of those pesky black stains, continue reading this article on cleaning the black ring under the toilet rim.

Why Does My Toilet Have This Black Stuff?

A black ring around your toilet is a common problem that can plague many homeowners. This ring is usually caused by a buildup of minerals and other debris accumulated over time. If you are experiencing this issue, don’t worry—it’s not as bad as it looks! With the help of some household products and a little elbow grease, you can easily clean and remove the black ring from your toilet.

There are several reasons why you might have this black ring in your toilet:

toilet paper stuck in pipe
Image from Electric Snake Sewer & Drain Service CT

Toilet Paper and Other Debris Stuck on Your Plumbing Fixtures

When people use toilet paper, they tend to drop it into the bowl rather than putting it into the waste receptacle beside the toilet or flushing it down after use (which is what most manufacturers recommend). The problem with all that extra toilet paper is that it sticks to your plumbing fixtures and creates an unsightly mess over time. You can clean this up by scrubbing each fixture with a toothbrush dipped in vinegar or bleach.

Hair and Other Debris in Your Drain Pipes

Hair, skin cells, soap scum, and other debris can clog up your pipes and cause black water stains in your toilets. You can use a drain snake to clear out these blockages, but if you don’t want to spend money on one of these tools, you can also use a wire coat hanger. Bend the end into a hook shape and push it through your pipe until you reach the clog — then pull back on the handle to remove any debris that’s stuck inside.

Plumbing leaks or cracks in pipes

If you have a small leak in your plumbing system, this may be causing the buildup on the inside of your toilet bowl. Minerals from water can cause staining on porcelain surfaces, so if you have any cracks or leaks in your plumbing system, it’s essential to fix these problems immediately.

The most common places to check are where pipes come out of the wall, behind the toilet, and on the floor. A leak may be visible at these places, but if not, try to find where water is coming out by placing food coloring on the suspected spots and watching for a color change.

using bleach to clean the toilet

Cleaning products

Some cleaning products contain coloring agents that may stain the toilet bowl or tank if they come into contact with these surfaces while they are still wet. This usually happens when people try to clean their toilets with products like toilet bowl cleaner or bleach. The solution is not to use these products on your toilet but instead use regular household cleaners like vinegar, baking soda, or even lemon juice (which is very acidic).

Porcelain erosion from hard water

Hard water contains minerals like calcium and magnesium that can cause deposits to build up inside your pipes and fixtures. These deposits can cause scale, which is a whitish substance that looks similar to salt. Scale can also turn your toilet bowl black or brown as it flushes down the drain.

If you live in an area with hard water, you may consider installing a water softener or shower head filter to help prevent this problem.

Mold growing in the tank or bowl

Mold grows in moist environments and can produce spores that cause black stains on your toilet bowl. If you’re seeing black rings under the rim of your toilet, it’s likely due to mold growth inside the tank or bowl. A plumber can take care of this problem for you by cleaning out your toilet tank and flushing out any remaining water from behind the tank. They’ll also check for leaks in pipes that could be causing moisture to build up behind the toilet tank.

How to Clean the Black Ring/Stuff under the Toilet Rim


If you have a black ring under the toilet rim, it’s likely to be caused by hard water. Hard water leaves mineral deposits on the surface of your toilet bowl, which can become quite stubborn to remove. Luckily there are several ways to tackle this problem.

Bleach/Household Cleaner and Brush for under Rims

The first thing that you want to do is clean under your rim with a brush and bleach or household cleaner. You can use some toilet bowl cleaner you can find at any store. Make sure you get the kind that has bleach in it to eliminate all the bacteria and germs causing this black ring.

Vinegar to Remove Rust and Mineral Buildup in Toilet Bowls

Vinegar is an excellent cleaning solution for bathrooms because it removes rust and mineral buildup from toilets, sinks, and bathtubs (even shower stalls). It removes soap scum and other buildups easily without using harsh chemicals or products that could damage your toilet bowl or sink basin surfaces. To clean your toilet, mix 2 cups of water with 1 cup of vinegar in a spray bottle, then spray away any surface buildup on your toilet bowl or sink basin until it’s all gone!

3 pax of clorox wipes
Image from MotherWorld

Use a Clorox Wipe, Scrubbing Bubbles, Tilex or Fantastik to Clean Underneath the Rim

If you have a ring that collects dirt and grime under your toilet rim and is hard to scrub, use an old-fashioned cleaning product such as Clorox wipes. These are great for removing dirt from hard-to-reach areas like underneath the rim of a toilet. Grab one and wipe away any dirt that has been accumulating there.

Soap and Water to Clean Up Around the Bowl

You don’t have to worry about getting into challenging corners when using soap and water because this will generally clean up everything else around the bowl. Ensure that you wash away all the soap afterward, so it doesn’t leave streaks on your toilet bowl!

Tips to Keep under the Toilet Bowl Rim Dirt Free

Taking care of the bathroom can be a challenge. The toilet is one area that requires a lot of attention. Many people are not aware that there are things that you can do to keep your toilet bowl rim clean and free from dirt.

Here are some tips to keep under the toilet bowl rim dirt-free:

  • Clean your toilet bowl at least once a week. This will keep the ring from forming and help prevent any odors from coming from it.
  • Use baking soda or vinegar as a natural cleaner for your toilet bowl. You can add one tablespoon of either one to a quart of warm water and pour it into the bowl, letting it sit for 30 minutes before scrubbing with an old toothbrush.
  • You can also use lemon juice or vinegar as an alternative to commercial cleaners; make sure you don’t let it sit too long before scrubbing because it may damage the finish on your toilet bowl if left too long (about 30 minutes).

How Can I Prevent Black Waterlines in the Future?

There are many ways to prevent black water lines in the future. Here are some tips:

Use less toilet paper. The more paper you use, the more likely it will clog your toilet’s drain or cause a backup in your pipes. Use only as much as necessary to clean yourself after using the bathroom.

man holding a toilet flush handle
Image from Montclair Supply

Flush your toilet twice after each use. This will help clear any leftover waste from the bowl before it has a chance to harden on the bottom of your toilet bowl and start building up into a permanent stain!

Add a deodorizer to your toilet tank. This will help neutralize odors and keep them from being released into the air when you flush. You can find commercial products or make your own by adding baking soda or vinegar to water and pouring it into your toilet tank.

Check for leaks. Look around your home for signs of leaking toilets, such as wet spots on the floor or outside the toilet area. Repairing leaks can help prevent black water lines in the future.

Take care of your septic tank. Your septic tank is part of a more extensive system that processes waste from your home and yard, including wastewater from toilets and sinks. Large amounts of solid waste in this system can cause blockages and backups that may result in a foul-smelling odor emanating from your drain pipes or septic tank.

man opening a septic tank
Image from Baldwin Septic Tanks LLC

If possible, keep an eye on how much water flows out of your faucets and showerheads when turned off. Suppose too much is coming out of them. In that case, you may want to consider installing aerators on them (available at most hardware stores) or installing low-flow fixtures instead of regular ones (these typically cost more than standard fixtures).


Black rings under toilet rims can grow over time if not properly maintained and cleaned. In most cases, you can clean them with a bleach solution or with a pumice stone. It’s time to put the bathroom back in order and clean the black ring under your toilet rim!

Leave a Comment