If you are wondering why is my shower draining slowly, the answer is almost always a buildup of hair, soap scum, or mineral deposits clogging the drain pipe. A slow shower drain is one of the most common plumbing problems in any home, and it usually starts small.
You notice the water rising around your ankles while you shower. Then it takes a few extra minutes to drain after you turn the water off. Before long, you are standing in several inches of water every time you step into the tub. For homeowners in Spokane, hard water from the Spokane Valley-Rathdrum Prairie Aquifer makes this problem worse because the dissolved minerals leave scale deposits inside your pipes that trap hair and soap even faster.
The good news is that most slow shower drains can be fixed without tearing apart your plumbing. But if you ignore the problem, a slow drain can turn into a complete blockage that backs up sewage into your tub or overflows onto your bathroom floor. According to the Insurance Information Institute, water damage is the second most common type of homeowner insurance claim in the United States. A little prevention now can save you from a costly repair later.
Slow Shower Drain Causes In Spokane
Understanding the slow shower drain causes helps you figure out the right fix. Most slow showers are caused by one or more of the following issues.
- Hair Buildup in the Drain
Hair is the number one cause of slow shower drains. The average person sheds 50 to 100 hairs per day, and a large portion of those loose hairs wash down the drain every time you shower. Hair does not dissolve in water. Instead, it collects on the drain cover, wraps around the drain crossbar, and tangles together inside the pipe just below the opening.
Once a small clump of hair forms inside the drain, it acts like a net that catches more hair, soap residue, and other debris with every shower. The clump grows until it blocks most of the pipe opening, and water can barely squeeze through. This is by far the most common reason for a shower drain clogged with hair, and it happens in every household regardless of how careful you are.
- Soap Scum and Product Residue
Bar soap is made with fats and oils that leave a sticky residue called soap scum on the inside of your drain pipe. This residue binds to hair and minerals, forming a thick, stubborn coating that narrows the pipe over time. Body wash, shampoo, conditioner, and shaving cream all contribute to this buildup as well. Conditioner is especially problematic because it contains oils designed to coat hair, which then coat the inside of your pipe.
Over weeks and months, this layer of product residue hardens on the pipe walls, reducing the space available for water to flow. Even if you remove the visible hair from the drain cover, the soap scum layer inside the pipe continues to catch new debris and slow the drain.
- Hard Water Mineral Deposits
Hard water contains dissolved calcium and magnesium that leave white, chalky deposits on everything the water touches. You see it on your showerhead, your faucets, and your glass doors. The same deposits form inside your drain pipes, where you cannot see them. Over time, this mineral scale narrows the pipe diameter and creates a rough surface that catches hair and soap scum more easily.
This is a significant factor in Spokane, where drinking water comes from the Spokane Valley-Rathdrum Prairie Aquifer, which measures around 13 grains per gallon, according to the Spokane Aquifer Joint Board. That puts Spokane's water in the very hard category. Homes with hard water develop drain buildup more quickly than those with soft water, so more frequent cleaning is needed to keep drains flowing freely.
- Small Objects Stuck in the Drain
Razor blade covers, shampoo bottle caps, small toys from children's bath time, and pieces of soap can fall into the drain opening and get lodged in the pipe or trap below. These objects create a partial blockage that catches hair and debris, leading to a slow drain that gets worse over time. If your shower drain slowed down suddenly rather than gradually, a dropped object may be the cause.
How to Fix a Slow Draining Shower In Spokane
If you want to know how to fix a slow draining shower, the right method depends on how severe the clog is and where it is located. Start with the simplest fix and work your way up if needed.
- Remove Visible Hair and Debris
The first step is to remove the drain cover and clean off any visible hair or debris. Most shower drain covers either snap out, unscrew with a Phillips head screwdriver, or lift off after removing a center screw. Once the cover is off, you will usually see a clump of hair and soap sitting right on top of the drain opening or wrapped around the crossbar below.
Pull out as much hair and debris as you can reach with your fingers or a pair of needle-nose pliers. Then use a plastic drain cleaning tool, sometimes called a zip-it strip or drain snake, to reach further into the pipe. These inexpensive tools have small barbs along the sides that grab hair and pull it out. Push the tool into the drain, twist it slowly, and pull it back out. You may need to repeat this several times until the tool comes back clean.
- Flush with Boiling Water
After removing the visible debris, pour a full kettle of boiling water slowly down the drain. The heat helps dissolve soap scum and loosen any remaining buildup clinging to the pipe walls. Let the hot water sit for a few minutes, then run the shower to test the drainage. For mild clogs, this simple step is often enough to restore normal flow.
Important note: Only use boiling water if your drain pipes are metal or PVC. If you have older rubber gaskets or connections, very hot water could damage them. When in doubt, use hot tap water instead of boiling water.
- Baking Soda and Vinegar Method
For a deeper clean without harsh chemicals, pour half a cup of baking soda into the drain and follow it with half a cup of white vinegar. The mixture will fizz and bubble, which helps break down soap scum and organic buildup inside the pipe. Let it sit for 15 to 30 minutes, then flush with hot water.
This method works well for light to moderate buildup. It is safe for all pipe types and does not release harmful fumes. You can repeat this once a week as a maintenance routine to prevent buildup from forming in the first place. The U.S. Environmental Protection Agency recommends using non-toxic cleaning methods when possible to reduce the amount of harsh chemicals entering the water system.
Why You Should Avoid Chemical Drain Cleaners
Store-bought chemical drain cleaners like Drano and Liquid-Plumr work by using caustic chemicals to dissolve the clog. While they may temporarily clear the blockage, these products can cause real damage to your pipes over time. The chemicals generate heat as they react with the clog, and that heat can soften PVC joints, corrode older metal pipes, and weaken the pipe walls. The U.S. Environmental Protection Agency cautions against the regular use of caustic drain cleaning chemicals because they can damage plumbing systems and release toxic fumes in enclosed bathroom spaces.
If the baking soda method does not clear the clog, it is better to call a professional for a drain cleaning service than to keep pouring chemicals into the pipe. Professional cleaning removes the buildup without damaging the pipe.
Standing Water in Shower Drain: What It Means
When you see standing water in your shower drain that does not go down at all, or takes more than a few minutes to drain, the clog has progressed beyond a simple surface buildup. Standing water in the shower drain means the pipe is almost completely blocked.
Causes of Standing Water
Standing water typically occurs when months or years of hair, soap scum, and mineral buildup narrow the pipe to the point where water cannot flow at a normal rate. It can also happen when a solid object is stuck in the trap below the drain. In some cases, the problem is not in the shower drain itself but further down the line. If the main drain that your shower connects to is partially blocked, water backs up into the shower because it is the lowest fixture on that plumbing branch.
If you notice standing water in your shower and other drains in the bathroom are also slow, the problem is likely in the shared drain line rather than in the shower drain alone. Multiple slow drains at the same time are a sign that you may need a clogged drain repair on the main branch line or the sewer lateral.
How to Clear Standing Water
Start by removing as much standing water as you can with a cup or small bucket. Then remove the drain cover and try the hair removal and plunging methods described above. A cup-style plunger works best for flat shower drains. Press the plunger firmly over the drain opening, making sure it seals completely, and pump it up and down rapidly 15 to 20 times. The pressure changes can dislodge a blockage and get the water moving again.
If plunging does not work, a hand-cranked drain snake can reach further into the pipe. Feed the snake cable into the drain opening and crank the handle to push it through the clog. When you feel resistance, keep cranking to break through the blockage. Pull the snake back out slowly and flush the drain with hot water. If none of these methods works, the clog is deep enough or severe enough that professional equipment is needed.
When to Call a Plumber If Shower Drain Not Draining Properly
If your shower drain is not draining properly after you have tried the DIY methods above, it is time to call a professional plumber. Here are the specific situations where professional help is the right call:
- You have removed hair and debris, used the baking soda method, and plunged the drain, but the water still drains slowly or not at all
- The drain clears temporarily but clogs again within a few days or weeks, which means the buildup is deeper than you can reach
- Multiple drains in your bathroom are slow at the same time, pointing to a problem in the shared drain line or main sewer
- You smell sewage coming from the shower drain, which can indicate a cracked pipe or a dry P-trap
- Water backs up into the shower when you flush the toilet or run the bathroom sink, which is a sign of a main line blockage
What a Professional Plumber Can Do
A licensed plumber has tools that go far beyond what you can buy at a hardware store. A motorized drain snake can reach 50 feet or more into the pipe and cut through tough blockages that a hand snake cannot handle. Hydro jetting service uses high-pressure water at 1,500 to 4,000 PSI to scour the full diameter of the pipe clean, removing not just the clog but all the buildup on the pipe walls. This restores the pipe to near-original capacity and prevents the clog from coming back for two to three years on average.
If the plumber suspects the pipe itself is damaged, a video camera inspection can show the exact condition of the pipe from the inside. The camera reveals cracks, corrosion, tree root intrusion, and collapsed sections that would never be found by snaking alone. This inspection takes the guesswork out of diagnosis and ensures you get the right fix the first time.
Preventing Slow Shower Drains
The best way to deal with a slow shower drain is to prevent it from happening in the first place. A few simple habits can keep your shower drain flowing freely and reduce the need for professional cleaning calls.
Use a Drain Cover or Hair Catcher
A mesh drain screen or silicone hair catcher placed over the shower drain catches hair before it enters the pipe. These cost a few dollars at any hardware store and are among the most effective preventive tools available. Clean the screen after every shower to keep it working properly. This single step can prevent the majority of shower drain clogs.
Brush Hair Before Showering
Brushing your hair before you step into the shower removes loose strands that would otherwise wash down the drain. This is especially helpful for people with long hair. The brush catches the hair that was going to fall out during the shower anyway, and you can throw it in the trash instead of sending it into the pipe.
Flush with Hot Water Weekly
Once a week, run hot water through the shower drain for two to three minutes after you finish showering. The heat helps melt soap residue and push small amounts of buildup through the pipe before they have a chance to harden and accumulate. For a deeper monthly clean, use the baking soda and vinegar method described earlier.
Address Hard Water with a Water Softener
If you live in Spokane and deal with hard water, a water softener removes the calcium and magnesium before they can leave deposits in your pipes, on your fixtures, and on your shower doors. Soft water is easier on your plumbing system and reduces the rate of mineral buildup inside drain pipes. If you already have a water softener and it isn't working, a water softener repair service can get it running properly again.
Prevention Checklist
Follow this checklist to keep your shower drain clear all year long:
- Place a mesh drain screen or silicone hair catcher over the drain and clean it after every shower
- Brush hair before showering to remove loose strands
- Run hot water through the drain for two to three minutes once a week
- Use the baking soda and vinegar flush once a month as a preventive cleaning
- Avoid pouring oils, conditioner, or soap chunks directly into the drain
- Schedule professional drain cleaning once a year if you have hard water or older pipes
- Never use chemical drain cleaners as a regular maintenance tool
Why Slow Shower Drains Are Common in Spokane
Spokane homeowners deal with slow shower drains more often than homeowners in many other parts of the country because of a few local factors that work against their plumbing.
Very Hard Water from the Aquifer
Spokane's water supply comes from the Spokane Valley-Rathdrum Prairie Aquifer, which produces water that is naturally high in calcium and magnesium. At around 13 grains per gallon, the water here is classified as very hard. Every time you shower, those minerals leave a thin layer of scale on the inside of the drain pipe. Over months and years, that scale builds up and narrows the pipe, making it easier for hair and soap to get caught and form clogs. Homes without water softeners see this buildup happen faster.
Older Homes with Aging Plumbing
According to the U.S. Census Bureau, the median construction year for homes in Spokane is 1961, and about 25 percent of the housing stock was built before the 1940s. Older homes often have cast iron or galvanized steel drain pipes that corrode from the inside over time.
The rough, flaky interior of a corroded pipe catches hair and soap scum much more easily than a smooth modern PVC pipe. If your home has original drain pipes from the 1950s or 1960s, they may be corroded enough that even regular cleaning only provides temporary relief.
If cleaning helps for a little while but the drain keeps slowing down quickly, the pipe material itself may be the problem. A plumbing repair service can evaluate whether the pipe needs to be replaced with modern materials that resist buildup and last decades longer.
Cold Winters and Frozen Residue
Spokane's cold winters can slow your drains in ways that aren't obvious. When temperatures drop, the water in your pipes gets colder, and cold water does not dissolve soap and grease as effectively as warm water. Soap residue that would wash away in summer can cling to cold pipe walls and harden. Pipes running through crawl spaces or exterior walls get especially cold. Running hot water through your shower drain regularly during winter helps keep residue from building up in those cold sections of pipe.
Call a Spokane Plumber for Stubborn Shower Drain Problems
A slow shower drain is annoying, but it is also your plumbing system giving you a warning. Left alone, the buildup only gets worse until you end up with a completely blocked drain, standing water in the tub, or sewage backing up into your bathroom. The cost of fixing a small clog now is always less than dealing with water damage and emergency repairs later.
Our licensed plumbers at Mr. Rooter Plumbing of Spokane have the tools and experience to clear even the most stubborn shower drain clogs. From simple drain snaking to full hydro jetting, they can clean your pipes and get your shower draining the way it should. If the problem turns out to be a damaged pipe, they can diagnose the issue with a camera inspection and walk you through your repair options.
Do not let a slow drain turn into a bigger problem. Contact Mr. Rooter Plumbing of Spokane to schedule a professional drain cleaning and get your shower back to normal.
