{"id":16836,"date":"2026-04-28T11:13:36","date_gmt":"2026-04-28T18:13:36","guid":{"rendered":"https:\/\/www.cleanwaterstore.com\/blog\/?p=16836"},"modified":"2026-10-11T15:42:55","modified_gmt":"2026-10-11T22:42:55","slug":"whole-house-water-filter-installation-checklist","status":"publish","type":"post","link":"https:\/\/www.cleanwaterstore.com\/blog\/whole-house-water-filter-installation-checklist\/","title":{"rendered":"Whole House Water Filter Installation Checklist: What to Do Before, During, and After?"},"content":{"rendered":"<p><!-- Focus Keyphrase: whole house water filter installation checklist --><!-- Slug: whole-house-water-filter-installation-checklist -->You have tested your water. You have chosen your system. Now you are ready to install.<\/p>\n<p><!-- PASTE INTO WORDPRESS VISUAL OR TEXT EDITOR --><\/p>\n<p>This is where a lot of homeowners run into trouble \u2014 not because the job is too hard, but because they skip steps. They forget to flush the system. They miss the air gap requirement. They do not check the pressure after startup. Small oversights that create big headaches later.<\/p>\n<p>This checklist walks you through every stage of a whole house water filter installation from start to finish. Bookmark it, print it, and work through it step by step. It covers both well water and city water setups.<\/p>\n<p>Watch Gerry Bulfin walk through the installation process here:<\/p>\n<p><!-- EMBED GERRY'S YOUTUBE VIDEO HERE --><\/p>\n<div style=\"text-align: center;\">\n<p><iframe loading=\"lazy\" title=\"Can I Install My Whole House Water Filtration System Myself or Do I Need a Contractor?\" width=\"660\" height=\"371\" src=\"https:\/\/www.youtube.com\/embed\/BYoq9skUxzE?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/p>\n<\/div>\n<p>&#x1f449; Not sure what system you need first? <a href=\"https:\/\/quiz.cleanwaterstore.com\/sf\/6db7a455\">Take our free Water Quiz<\/a><\/p>\n<p><!-- ========== BEFORE SECTION ========== --><\/p>\n<h2>Before You Install: What Do You Need to Do First?<\/h2>\n<p>The work you do before you pick up a wrench determines how smooth the installation goes. Do not skip this stage.<\/p>\n<p><!-- ========== Q1 ========== --><\/p>\n<h3>Have You Tested Your Water Recently?<\/h3>\n<p>This is the most important step and the most commonly skipped one. A water test tells you exactly what your system needs to remove. Without it, you may install the wrong system entirely \u2014 or install a good system in the wrong order.<\/p>\n<p>Well water customers should test for iron, manganese, hardness, pH, bacteria, and TDS at minimum. City water customers should test for chlorine, chloramines, sediment, and hardness.<\/p>\n<p><a href=\"https:\/\/www.cleanwaterstore.com\/water-testing.html\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-11790\" src=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2017\/01\/SimpleLab-Advanced-Well-Water-Test.webp\" alt=\"Clean Water Store partners with Simplelab for certified well water testing.\" width=\"450\" height=\"356\" data-id=\"11790\" srcset=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2017\/01\/SimpleLab-Advanced-Well-Water-Test.webp 1480w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2017\/01\/SimpleLab-Advanced-Well-Water-Test-300x237.webp 300w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2017\/01\/SimpleLab-Advanced-Well-Water-Test-1024x810.webp 1024w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2017\/01\/SimpleLab-Advanced-Well-Water-Test-768x607.webp 768w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2017\/01\/SimpleLab-Advanced-Well-Water-Test-400x316.webp 400w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2017\/01\/SimpleLab-Advanced-Well-Water-Test-500x395.webp 500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/a><\/p>\n<p>The <a href=\"https:\/\/www.cdc.gov\/drinking-water\/safety\/guidelines-for-testing-well-water.html\" target=\"_blank\" rel=\"noopener noreferrer\">CDC recommends testing private well water at least once a year<\/a> \u2014 and more often if your water quality has changed or if conditions near your well have shifted.<\/p>\n<p>&#x1f449; Order <a href=\"https:\/\/www.cleanwaterstore.com\/water-testing.html\">a water test\u00a0<\/a><\/p>\n<p><!-- ========== Q2 ========== --><\/p>\n<h3>Do You Know Your Flow Rate and Water Pressure?<\/h3>\n<p>Your system must be sized to match your household water demand. A system that is too small will cause pressure drops throughout the house. A system that is too large wastes money.<\/p>\n<p>To measure your flow rate, time how long it takes to fill a five-gallon bucket at your outdoor hose bib. Divide five by the number of seconds and multiply by 60. That gives you gallons per minute.<\/p>\n<p>Check your water pressure with a simple gauge attached to an outdoor spigot. Most whole house systems require between 20 and 90 PSI. Well water customers should also note their pressure tank cut-in and cut-off settings before starting.<\/p>\n<p><!-- ========== Q3 ========== --><\/p>\n<h3>Is Your Installation Location Ready?<\/h3>\n<p>The best location for a whole house water filter is after the main shutoff valve and before the water heater. This protects every tap, appliance, and water heater in the house.<\/p>\n<p>Check that your chosen location has:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul style=\"list-style-type: circle;\">\n<li>Enough clearance to work around the system \u2014 at least 12 inches on all sides<\/li>\n<li>A nearby drain for backwashing systems (floor drain, utility sink, or standpipe)<\/li>\n<li>Protection from freezing temperatures and direct sunlight<\/li>\n<li>A 110V electrical outlet nearby if your system requires one<\/li>\n<li>A level surface \u2014 tanks must sit plumb and straight<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>For well water customers:<\/strong> Your iron filter or softener must be installed after the pressure tank, not before it. Installing before the pressure tank prevents proper backwashing and can damage the control valve. <a href=\"https:\/\/www.cleanwaterstore.com\/blog\/iron-filter-placed-well-pressure-tank\/\">Read more about iron filter placement here.<\/a><\/p>\n<p><strong>For city water customers:<\/strong> Locate the point where your main water line enters the house \u2014 usually in a basement, garage, or utility room. Your filter installs here so all water coming into the home is treated.<\/p>\n<p><!-- ========== Q4 ========== --><\/p>\n<h3>Do You Have All Your Tools and Parts?<\/h3>\n<p>Gather everything before you shut off the water. Running to the hardware store mid-installation with no water in the house is a frustrating experience.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-16837\" src=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/drill_diy_home.png\" alt=\"Drill on yellow background, diy home project tools. \" width=\"450\" height=\"299\" data-id=\"16837\" srcset=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/drill_diy_home.png 1524w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/drill_diy_home-300x200.png 300w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/drill_diy_home-1024x681.png 1024w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/drill_diy_home-768x511.png 768w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/drill_diy_home-400x266.png 400w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/drill_diy_home-500x333.png 500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/p>\n<p><strong>Tools you will likely need:<\/strong><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul style=\"list-style-type: circle;\">\n<li>Pipe wrench and adjustable pliers<\/li>\n<li>Teflon tape and pipe thread sealant<\/li>\n<li>Tubing cutter (for copper) or PEX crimping tool (for PEX)<\/li>\n<li>Drill and bits if you need to run a drain line<\/li>\n<li>Bucket and towels for water spillage<\/li>\n<li>Pressure gauge<\/li>\n<li>Food-grade silicone grease for O-rings<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><strong>Parts to have on hand:<\/strong><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul style=\"list-style-type: circle;\">\n<li>Bypass valve (if not included with your system)<\/li>\n<li>Service shutoff valves before and after the filter<\/li>\n<li>Drain line tubing and fittings<\/li>\n<li>Appropriate pipe fittings for your pipe type (copper, PEX, CPVC, or galvanized)<\/li>\n<li><a href=\"https:\/\/www.cleanwaterstore.com\/o-rings-28402.html\">Extra O-rings<\/a> (the right size for your housing)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><!-- ========== Q5 ========== --><\/p>\n<h3>Have You Checked Your Local Plumbing Code?<\/h3>\n<p>Some jurisdictions require a permit before cutting into a main water line. Others have specific requirements for drain line connections and air gaps. A quick call to your local building department takes five minutes and can save you significant headaches \u2014 especially if you plan to sell the home later.<\/p>\n<p>Make sure your system carries the appropriate <a href=\"https:\/\/www.nsf.org\/consumer-resources\/articles\/standards-water-treatment-systems\" target=\"_blank\" rel=\"noopener noreferrer\">NSF\/ANSI certification<\/a>. Most plumbing codes require that water treatment equipment meets NSF\/ANSI standards. For whole house filters, look for NSF\/ANSI 42 or 53 certification. For UV systems, NSF\/ANSI 55. For water softeners, NSF\/ANSI 44.<\/p>\n<p>&#x1f449; Read more: <a href=\"https:\/\/www.cleanwaterstore.com\/blog\/do-i-need-a-plumber-for-whole-house-water-filter-installation\/\">Do I Need a Plumber for Whole House Water Filter Installation?<\/a><\/p>\n<p><!-- ========== Q6 ========== --><\/p>\n<h3>Have You Read the Manufacturer&#8217;s Installation Manual?<\/h3>\n<p>Read it fully before you start. Every system is slightly different. The manual will tell you the correct flow direction, the required drain line size, the startup procedure, and the initial programming settings. Skipping this step is one of the most common \u2014 and most avoidable \u2014 installation mistakes.<\/p>\n<p>&#x1f449; Read more: <a href=\"https:\/\/www.cleanwaterstore.com\/blog\/whole-house-water-filter-installation-mistakes-and-how-to-avoid-them\/\">Common Mistakes When Installing a Whole House Water Filtration System<\/a><\/p>\n<p><!-- ========== DURING SECTION ========== --><\/p>\n<h2>During Installation: What Do You Need to Do Step by Step?<\/h2>\n<p><!-- ========== Q7 ========== --><\/p>\n<h3>Have You Shut Off the Water and Released Pressure?<\/h3>\n<p>Before cutting a single pipe, shut off your main water supply completely. Then open a faucet at the lowest point in the house \u2014 a basement hose bib or utility sink \u2014 to drain the line and release any built-up pressure.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-16838\" src=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/diy_plumber.png\" alt=\"Diy homeowner turning off main water supply\" width=\"450\" height=\"300\" data-id=\"16838\" srcset=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/diy_plumber.png 1520w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/diy_plumber-300x200.png 300w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/diy_plumber-1024x683.png 1024w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/diy_plumber-768x512.png 768w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/diy_plumber-400x267.png 400w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/diy_plumber-500x334.png 500w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/p>\n<p>Skipping the pressure release step causes water to spray when you cut the pipe. It seems obvious but it catches people off guard every time.<\/p>\n<p><!-- ========== Q8 ========== --><\/p>\n<h3>Is Your Bypass Valve Installed Correctly?<\/h3>\n<p>A bypass valve lets you isolate the filter for maintenance without shutting off water to the entire house. Install it before anything else. Without one, every filter change and service call means cutting the water to the whole home.<\/p>\n<p>Most bypass valves have three positions: service (water flows through the filter), bypass (water goes around the filter), and shutoff (water to the filter is closed entirely). Make sure you understand how your valve works before connecting anything else.<\/p>\n<p><!-- ========== Q9 ========== --><\/p>\n<h3>Is the Flow Direction Correct?<\/h3>\n<p>This is one of the most common and most damaging installation mistakes. Every filter tank and housing has a specific flow direction \u2014 water must enter and exit from the correct ports. Installing it backward prevents proper filtration and can damage internal components.<\/p>\n<p>Check the arrows or inlet\/outlet markings on your tank or housing. When in doubt, check the manual. Do not assume.<\/p>\n<p><!-- ========== Q10 ========== --><\/p>\n<h3>Is Your Drain Line Set Up Correctly with an Air Gap?<\/h3>\n<p>Backwashing systems \u2014 iron filters, softeners, carbon backwash filters \u2014 all require a drain line. The drain line carries waste water out during the backwash cycle.<\/p>\n<p>Most plumbing codes require an <a href=\"https:\/\/www.cleanwaterstore.com\/air-gaps.html\">air gap<\/a> on the drain line. This means the end of the drain line must terminate above the drain opening \u2014 not submerged in it \u2014 so contaminated water cannot flow backward into your filtration system.<\/p>\n<p>The drain line must also be the correct diameter. Too small and backwash pressure builds up and causes problems. Check your manual for the required drain line size.<\/p>\n<p><strong>For well water customers:<\/strong> Make sure your drain line is long enough to reach a proper drain and secured so it cannot move during the backwash cycle. A drain line that comes loose during a backwash cycle floods the utility room fast.<\/p>\n<p><!-- ========== Q11 ========== --><\/p>\n<h3>Are All Connections Sealed and Tightened Correctly?<\/h3>\n<p>Wrap all threaded connections with two to three even layers of Teflon tape in a clockwise direction before tightening. Do not use petroleum-based sealants on plastic fittings \u2014 they can crack the plastic over time. Use food-grade thread sealant or Teflon tape only.<\/p>\n<p>Tighten fittings firmly but do not overtighten. Overtightening cracks housings and strips threads. If a connection still drips after snugging it down, give it one more quarter turn \u2014 no more.<\/p>\n<p><!-- ========== Q12 ========== --><\/p>\n<h3>Is the O-Ring Seated Correctly?<\/h3>\n<p>If your system uses a filter housing, the O-ring forms the watertight seal. Apply a thin layer of food-grade silicone grease to the O-ring before assembly. Make sure it sits evenly in its groove with no twisting or gaps. A dry, cracked, or misaligned O-ring will leak \u2014 even if everything else is perfect.<\/p>\n<p>Never use petroleum-based lubricants like WD-40 or standard grease on O-rings. These degrade rubber over time and will cause the O-ring to fail.<\/p>\n<p><!-- ========== Q13 ========== --><\/p>\n<h3>Have You Loaded the Filter Media Correctly?<\/h3>\n<p>Tank-based systems \u2014 iron filters, softeners, carbon backwash filters, acid neutralizers \u2014 require media to be loaded before startup. Most systems require adding a gravel underbedding first, then the filter media on top.<\/p>\n<p>Do not overfill the tank. Media needs room to expand during backwashing. Your manual will specify the correct fill level. Overfilling prevents proper backwashing and shortens media life significantly.<\/p>\n<p><strong>For carbon backwash systems:<\/strong> Allow the carbon to soak for at least two hours before startup \u2014 12 to 24 hours is better. This purges carbon fines and gives you clearer water at first use.<\/p>\n<p><!-- ========== Q14 ========== --><\/p>\n<h3>For Well Water: Is the System in the Right Order?<\/h3>\n<p>If you are installing multiple treatment systems on well water, the order matters. Here is the standard sequence for most well water setups:<\/p>\n<ol>\n<li style=\"list-style-type: none;\">\n<ol>\n<li>Sediment pre-filter (protects everything downstream)<\/li>\n<li>Acid neutralizer if needed (corrects pH before iron filter)<\/li>\n<li>Iron filter (after the pressure tank)<\/li>\n<li>Water softener (after iron filter, protects resin from iron fouling)<\/li>\n<li>UV disinfection system (last in line, treats fully filtered water)<\/li>\n<li>Carbon filter if desired (removes any residual taste or odor)<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<p>&#x1f449; <a href=\"https:\/\/www.cleanwaterstore.com\/blog\/how-do-i-know-if-one-water-system-will-work-or-if-i-need-multiple-systems\/\">Read more about multiple system set-ups for well water treatment<\/a><\/p>\n<p><!-- ========== AFTER SECTION ========== --><\/p>\n<h2>After Installation: What Do You Need to Check Before You Are Done?<\/h2>\n<p><!-- ========== Q15 ========== --><\/p>\n<h3>Have You Done a Slow Startup and Leak Check?<\/h3>\n<p>Do not turn the water back on at full pressure all at once. Open the main shutoff slowly \u2014 about a quarter turn at a time. Watch every connection carefully as pressure builds. Look for drips at fittings, the filter housing, the bypass valve, and the drain line connection.<\/p>\n<p>Let the system pressurize fully and then walk through every connection again. Small drips that do not show up immediately at low pressure often appear once the system reaches full operating pressure.<\/p>\n<p><!-- ========== Q16 ========== --><\/p>\n<h3>Have You Purged the Air from the System?<\/h3>\n<p>Air pockets in the system cause noisy pipes, reduced flow, and pressure spikes. After startup, open several faucets around the house and let them run until the flow is steady with no sputtering. Use the pressure relief button on your filter housing if it has one.<\/p>\n<p>It is normal for water to look cloudy or discolored for the first few minutes after startup. This is usually just air and fine particles from the new media. It clears up quickly.<\/p>\n<p><!-- ========== Q17 ========== --><\/p>\n<h3>Have You Run the Initial Flush?<\/h3>\n<p>Most systems require a flush before the water is safe to drink or use. Carbon filters need flushing to clear carbon fines. Iron filter media needs an initial backwash cycle. Water softeners need a full regeneration cycle.<\/p>\n<p>Check your manual for the specific flush procedure and duration. Do not skip this step. Using the water before flushing can result in discolored water or particulate entering your pipes and fixtures.<\/p>\n<p><!-- ========== Q18 ========== --><\/p>\n<h3>Have You Checked Your Water Pressure After Startup?<\/h3>\n<p>A whole house filter should cause minimal pressure drop \u2014 typically less than 5 PSI when the system is clean and properly sized. If you notice a significant pressure drop immediately after installation, check for:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul style=\"list-style-type: circle;\">\n<li>Bypass valve partially closed<\/li>\n<li>Incorrect flow direction<\/li>\n<li>Sediment pre-filter already clogged from installation debris<\/li>\n<li>System undersized for your flow rate<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Install a pressure gauge before and after the filter. The difference between the two readings tells you exactly how much pressure drop the filter is causing. This also helps you know when it is time for a filter change or backwash cycle in the future.<\/p>\n<p><!-- ========== Q19 ========== --><\/p>\n<h3>Have You Programmed the Control Valve?<\/h3>\n<p>Backwashing systems \u2014 iron filters, softeners, carbon backwash filters \u2014 have a control valve that needs to be programmed before the system starts operating automatically. You will need to set:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul style=\"list-style-type: circle;\">\n<li>The current time of day<\/li>\n<li>The backwash day and time (typically set to run at 2 AM when water is not being used)<\/li>\n<li>The backwash duration and rinse cycle length<\/li>\n<li>For softeners: the hardness level and salt dose<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>Set backwash cycles to run at night when no one is using water. Running a backwash cycle while someone is showering causes a sudden pressure drop and water temperature spike.<\/p>\n<p><!-- ========== Q20 ========== --><\/p>\n<h3>Have You Tested Your Water After Installation?<\/h3>\n<p>This is the step that confirms everything is working. Test the water coming out of your system and compare it to your before results. For well water customers, test for the same contaminants you tested for before installation. For city water customers, a simple chlorine test confirms your carbon filter is doing its job.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-16839\" src=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/before_and_after_water_test.png\" alt=\"Example of before and after water test, an important step in whole house water filter installation.\" width=\"450\" height=\"366\" data-id=\"16839\" srcset=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/before_and_after_water_test.png 1700w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/before_and_after_water_test-300x244.png 300w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/before_and_after_water_test-1024x833.png 1024w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/before_and_after_water_test-768x625.png 768w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/before_and_after_water_test-400x325.png 400w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/before_and_after_water_test-500x407.png 500w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/before_and_after_water_test-1536x1250.png 1536w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/before_and_after_water_test-800x650.png 800w\" sizes=\"auto, (max-width: 450px) 100vw, 450px\" \/><\/p>\n<p>The <a href=\"https:\/\/www.epa.gov\/privatewells\/protect-your-homes-water\" target=\"_blank\" rel=\"noopener noreferrer\">EPA recommends using only state-certified laboratories for water testing<\/a> to ensure accurate results. Your local health department may offer free or low-cost testing for private well owners.<\/p>\n<p>&#x1f449; Order <a href=\"https:\/\/www.cleanwaterstore.com\/water-testing.html\">a post-installation water test<\/a><\/p>\n<p><!-- ========== Q21 ========== --><\/p>\n<h3>Have You Set Up a Maintenance Schedule?<\/h3>\n<p>The best water filtration system in the world stops working if you do not maintain it. Before you consider the installation done, set up reminders for:<\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul style=\"list-style-type: circle;\">\n<li>Filter cartridge replacement (every 3-6 months for cartridge-based systems)<\/li>\n<li>Salt top-up for water softeners (check monthly)<\/li>\n<li>Annual water test to verify system performance<\/li>\n<li>UV bulb replacement (typically every 12 months)<\/li>\n<li>Media replacement schedule (varies by system \u2014 check your manual)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>The <a href=\"https:\/\/www.epa.gov\/water-research\/water-filter-education-handouts\" target=\"_blank\" rel=\"noopener noreferrer\">EPA&#8217;s Water Filter Education resources<\/a> cover maintenance basics and why keeping up with filter changes directly affects the safety and effectiveness of your water.<\/p>\n<p><!-- ========== CONCLUSION ========== --><\/p>\n<h2>What Should You Do If Something Does Not Seem Right After Installation?<\/h2>\n<p>Do not ignore warning signs. If you see persistent drips, unusual pressure drops, discolored water that does not clear up within a day, or water that still fails a post-installation test \u2014 stop using the system and investigate before proceeding.<\/p>\n<p>At Clean Water Store, we have helped thousands of well water and city water customers get their systems installed and running correctly. We build many of our systems modular so they can be added to over time as your water or your needs change. If you need help troubleshooting an installation or want to talk through your setup with a specialist, we are here.<\/p>\n<p>&#x1f449; Chat <a href=\"https:\/\/go.appointmentcore.com\/book\/eZeZdVQj\">with a water specialist\u00a0<\/a><\/p>\n<p><a href=\"https:\/\/go.appointmentcore.com\/book\/eZeZdVQj\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-15526 size-full\" src=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2025\/09\/request-a-call-CTA-final.jpg\" alt=\"Clean Water Store call-to-action banner inviting users to request a free call for more information about water treatment systems, with phone number and green \u201cBook Now\u201d button.\" width=\"1700\" height=\"266\" data-id=\"15526\" srcset=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2025\/09\/request-a-call-CTA-final.jpg 1700w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2025\/09\/request-a-call-CTA-final-300x47.jpg 300w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2025\/09\/request-a-call-CTA-final-1024x160.jpg 1024w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2025\/09\/request-a-call-CTA-final-768x120.jpg 768w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2025\/09\/request-a-call-CTA-final-400x63.jpg 400w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2025\/09\/request-a-call-CTA-final-500x78.jpg 500w, https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2025\/09\/request-a-call-CTA-final-1536x240.jpg 1536w\" sizes=\"auto, (max-width: 1700px) 100vw, 1700px\" \/><\/a><\/p>\n<p>&#x1f449; Read more:<\/p>\n<p><a href=\"https:\/\/www.cleanwaterstore.com\/blog\/diy-vs-contractor-whole-house-water-filter-installation\/\">DIY vs Contractor \u2014 How to Install a Whole House Water Filter Without a Costly Mistake<\/a><\/p>\n<p><a href=\"https:\/\/www.cleanwaterstore.com\/blog\/whole-house-water-filter-installation-mistakes-and-how-to-avoid-them\/\">Common Mistakes When Installing a Whole House Water Filtration System<\/a><\/p>\n<p><a href=\"https:\/\/www.cleanwaterstore.com\/blog\/how-long-does-it-take-to-install-a-whole-house-water-filter\/\">How Long Does It Take to Install a Whole House Water Filter?<\/a><\/p>\n<p><em>Article last updated April 28th, 2026 by Author<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>You have tested your water. You have chosen your system. Now you are ready to install. This is where a lot of homeowners run into trouble \u2014 not because the job is too hard, but because they skip steps. They forget to flush the system. They miss the air gap requirement. They do not check &hellip; <a href=\"https:\/\/www.cleanwaterstore.com\/blog\/whole-house-water-filter-installation-checklist\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Whole House Water Filter Installation Checklist: What to Do Before, During, and After?<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":16839,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"om_disable_all_campaigns":false,"footnotes":""},"categories":[2623,2649,1,2652],"tags":[],"class_list":["post-16836","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-city-water","category-custom-water-treatment-systems","category-uncategorized","category-water-filter-installation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.6 (Yoast SEO v28.7) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Whole House Water Filter Installation Checklist: Before, During and After<\/title>\n<meta name=\"description\" content=\"Ready to install your whole house water filter? Use this step-by-step checklist to prepare correctly, install with confidence, and make sure everything works after startup.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cleanwaterstore.com\/blog\/whole-house-water-filter-installation-checklist\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Whole House Water Filter Installation Checklist: What to Do Before, During, and After? Whole House Water Filter Installation Checklist: What to Do Before, During, and After? - Clean Water Store\" \/>\n<meta property=\"og:description\" content=\"You have tested your water. You have chosen your system. Now you are ready to install. This is where a lot of homeowners run into trouble \u2014 not because Clean, Safe Water Solutions from Clean Water Store.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cleanwaterstore.com\/blog\/whole-house-water-filter-installation-checklist\/\" \/>\n<meta property=\"og:site_name\" content=\"The Clean Well Water Report\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/cleanwaterstore\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/cleanwaterstore\" \/>\n<meta property=\"article:published_time\" content=\"2026-04-28T18:13:36+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-10-11T22:42:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.cleanwaterstore.com\/blog\/wp-content\/uploads\/2026\/04\/before_and_after_water_test-1024x833.png\" \/>\n\t<meta property=\"og:image:width\" content=\"1024\" \/>\n\t<meta property=\"og:image:height\" content=\"833\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"author\" content=\"Gerry Bulfin\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Gerry Bulfin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"12 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/whole-house-water-filter-installation-checklist\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/whole-house-water-filter-installation-checklist\\\/\"},\"author\":{\"@id\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/#gerry\"},\"headline\":\"Whole House Water Filter Installation Checklist: What to Do Before, During, and After?\",\"datePublished\":\"2026-04-28T18:13:36+00:00\",\"dateModified\":\"2026-10-11T22:42:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/whole-house-water-filter-installation-checklist\\\/\"},\"wordCount\":2448,\"publisher\":{\"@id\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/whole-house-water-filter-installation-checklist\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/before_and_after_water_test.png\",\"articleSection\":[\"City Water\",\"Custom Water Treatment Systems\",\"Treating Well Water\",\"Water Filter Installation\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/whole-house-water-filter-installation-checklist\\\/\",\"url\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/whole-house-water-filter-installation-checklist\\\/\",\"name\":\"Whole House Water Filter Installation Checklist: Before, During and After\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/whole-house-water-filter-installation-checklist\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/whole-house-water-filter-installation-checklist\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.cleanwaterstore.com\\\/blog\\\/wp-content\\\/uploads\\\/2026\\\/04\\\/before_and_after_water_test.png\",\"datePublished\":\"2026-04-28T18:13:36+00:00\",\"dateModified\":\"2026-10-11T22:42:55+00:00\",\"description\":\"Ready to install your whole house water filter? 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