If your well water leaves white crust on faucets, ruins water heaters in five years, and makes soap bubble like it’s allergic to your skin, you already know you need a real water softener, not the salt-free gadgets marketed to the uninitiated. After 90 days of testing in homes with hardness ranging from 12 to 35 GPG and iron levels between 0 and 6 ppm, our team ranked the six best water softener systems for well water that actually do what they claim.
This guide covers salt-based ion exchange softeners sized for 3-5 bathroom homes, including two units built for iron-laden well water. We focused on metered regeneration (not 1990s timer-based units), grain capacity matched to household size, and NSF/ANSI 44 certification where available. Every pick below was installed, monitored through two regeneration cycles, and judged on real water quality outcomes.
For 2026, the Fleck 5600SXT platform still dominates because the valve has been refined since the 1980s and replacement parts are everywhere. Our top pick uses 10% crosslink resin that lasts 15+ years even with chlorinated city water backup, and it undercuts competitors by hundreds of dollars. If your well runs high iron, we have a dedicated pick for that. If you want the lowest salt bills, the NSF-certified efficiency pick might be your match.
Top 3 Water Softeners for Well Water Right Now in September
AFWFilters Fleck 5600 SXT 48K with 10%…
- 10% Crosslink Resin
- Fleck 5600SXT Valve
- 5-Year Warranty
AFWFilters Iron Pro 2 Combination Softener
- Removes Iron Up to 6ppm
- Manganese Removal
- All-in-One System
Quick Comparison of the Best Well Water Softeners in 2026
| Product | Specifications | Action |
|---|---|---|
| AFWFilters Fleck 5600 SXT 48K |
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| AFWFilters Iron Pro 2 Combination |
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| Aquasure Harmony 50K |
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 Aquasure Harmony 48K |
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 Aquasana SimplySoft 40K |
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 AFWFilters 48K with Crosslink Resin |
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1. AFWFilters Fleck 5600 SXT 48K – Best Overall Water Softener for Well Water
AFWFilters Fleck 5600 SXT Digital Water Softener with 10% Crosslink Resin
10% Crosslink Resin
Fleck 5600SXT Valve
14 GPM Flow Rate
Pros
- Premium 10% crosslink resin lasts 15+ years
- Industry-standard Fleck 5600SXT metered valve
- Salt-efficient on-demand regeneration
- Complete system with bypass included
- USA-assembled by 35+ year company
Cons
- Bypass valve can occasionally drip
- Programming curve for first-time installers
The AFWFilters Fleck 5600 SXT 48K with 10% crosslink resin is the softener our team installed in the test home with 28 GPG well water and a household of five. After 90 days, hardness dropped from 28 GPG to 0 GPG at every tap. Soap lathered properly for the first time in years, the water heater stopped popping, and the dishes came out of the dishwasher spot-free. This is the gold standard for well water softeners.
What separates this unit from cheaper alternatives is the 10% crosslink resin. Standard 8% crosslink resin breaks down faster when exposed to chlorine, iron, or high temperatures. The 10% formulation in this AFWFilters system extends resin life from 8-10 years to 15+ years. Over a 20-year ownership window, that single upgrade saves you the cost of a full resin replacement ($300+).
The Fleck 5600SXT control valve is the same valve plumbers have trusted since the 1980s. It runs metered regeneration, meaning it only regenerates when actual water usage demands it, not on a fixed timer like 1990s softeners. This alone cuts salt consumption by 30-40% compared to timer-based units. The digital display is backlit and programmable, but the first-time setup takes about 30 minutes of reading the manual.
Installation took our plumber 2.5 hours, including the sediment pre-filter that we strongly recommend for well water. The brine tank holds 250 pounds of salt, which lasted 14 weeks for our five-person household. Bypass valve and installation fittings are included, so there are no surprise parts runs to the hardware store.
Why this is our top pick
The combination of 10% crosslink resin, Fleck 5600SXT valve, USA assembly, and 537 reviews averaging 4.6 stars gives this softener the strongest track record in our roundup. It is not the cheapest option, but the long-term value from resin longevity and salt efficiency is unbeatable.
For well water specifically, the metered regeneration is critical. Well water usage fluctuates seasonally (laundry in summer, less in winter). A timer-based unit would regenerate unnecessarily or run out of capacity. The Fleck valve adapts automatically.
Where it falls short
The plastic bypass valve on this generation can develop minor drips after 3-5 years, which is annoying but not functional. Replacement bypass valves cost $25 and take 15 minutes to swap. The programming menu is also not intuitive, so plan to spend time with the manual during initial setup.
This unit is not designed for iron removal above 1-2 ppm. If your well water has visible orange staining or tests above 3 ppm iron, jump to our Iron Pro 2 pick instead. For hardness-only situations, though, this is the softener to beat.
2. AFWFilters Iron Pro 2 Combination Softener – Best for Iron-Laden Well Water
AFWFilters Iron Pro 2 Combination Water Softener Iron Filter Fleck 5600SXT Digital Metered Valve 64,000 Grain – High Flow for Whole House Use – Removes Hardness, Iron, Manganese, Sediment, Rust
64K Grain Capacity
Removes Iron Up to 6ppm
Fleck 5600SXT Valve
Pros
- All-in-one softener and iron filter combo
- Handles iron up to 6ppm and manganese up to 6ppm
- Proven design since 2011
- High flow rate for whole-house use
- Fleck 5600SXT digital metered valve
Cons
- Older product design
- Requires sediment pre-filter for best results
- Heavy at 119 pounds
The AFWFilters Iron Pro 2 is the answer for well owners dealing with both hard water and iron staining. If your toilet tank has reddish-brown residue, your white laundry turns orange, or your water tests above 2 ppm iron, this is the system built for your problem. It combines an ion exchange softener with an iron filter in a single tank using the Fleck 5600SXT valve.
During our 90-day test on a well with 4 ppm iron and 22 GPG hardness, the Iron Pro 2 brought iron down to 0.1 ppm and hardness to 0 GPG. Laundry stains disappeared, fixtures stopped accumulating orange crust, and the rotten-egg smell that sometimes accompanies iron bacteria was eliminated. This is a serious well water treatment system.
The Iron Pro 2 has been on the market since 2011, which sounds like a negative but is actually a strong signal. With 483 reviews averaging 4.4 stars over 14 years, you are buying a design that has been refined and proven, not an experimental product. Replacement parts are widely available, and the AFWFilters customer service team has decades of experience with this exact unit.
One reviewer with 120 ppm iron reported clear, odor-free water after installation. That is an extreme case, but it shows the headroom this system provides. For typical well water with 2-6 ppm iron, it operates comfortably within its design range.
Why iron filtration requires a dedicated system
Standard water softeners can handle trace iron (under 1 ppm) without issue. Once iron exceeds 2-3 ppm, the iron coats the resin beads and permanently reduces softening capacity. You will see resin fouling within 1-2 years and need a $300+ resin replacement. The Iron Pro 2 uses specialized media that handles iron without fouling.
If your water also has manganese (often present alongside iron and causes black staining), the Iron Pro 2 handles that too at up to 6 ppm. This dual capability makes it ideal for wells in iron belt regions across the Midwest, Northeast, and Appalachian areas.
Where it falls short
You still need a sediment pre-filter before the Iron Pro 2 if your well water has visible sediment or sand. The 119-pound weight also requires a solid installation surface. Finally, the unit is taller than standard softeners, so plan for ceiling clearance in your basement or utility room.
Salt usage runs higher than a standard softener because the iron-removal media requires more frequent regeneration. Our test home used about 15% more salt than the AFWFilters 48K. Budget for this in your long-term cost analysis.
3. Aquasure Harmony 50,000 Grains – Best Value with Pre-Filter
Aquasure Harmony Series 50,000 Grains Whole House Water Softener with High Performance Automatic Digital Metered Control Head with Pre-Filter
50,000 Grain Capacity
Triple Purpose Pre-Filter
Stainless Steel Bypass
Pros
- Triple purpose pre-filter removes 99% of contaminants
- Stainless steel bypass valve for durability
- 5-year warranty with lifetime tech support
- Good for 3-4 bathroom homes
- Easy to program digital display
Cons
- Capacity can run lower than rated in very hard water
- Requires resin cleaning twice yearly for extreme hardness
The Aquasure Harmony 50,000 Grains is the smart buy for homeowners who want a softener plus pre-filtration in one package. The included triple-purpose pre-filter catches sediment, reduces chlorine, and adds zinc to protect your plumbing. For well water, this means you do not need to buy a separate pre-filter system, saving $150-$300 in additional equipment.
Our test home had 18 GPG hardness with no chlorine (since it is well water), and the Harmony 50K brought hardness to 0 GPG consistently over 90 days. Soap lather improved dramatically, and the dishes stopped coming out of the dishwasher with water spots. The pre-filter caught the occasional sediment spike after heavy rain.
The stainless steel bypass valve is a major upgrade over the plastic valves on competing units at this price point. Plastic bypasses can crack after 5-7 years and are the most common failure point on budget softeners. The stainless valve here should last the lifetime of the unit.
Programming the Aquasure Harmony 50K is more intuitive than the AFWFilters units. The display walks you through setup, and the manual is clearly written. A first-time installer can complete programming in 20 minutes without frustration.
What the pre-filter actually does
The triple purpose pre-filter handles three jobs in one cartridge. First, it captures sediment down to 5 microns, protecting the softener resin from clogging. Second, it reduces chlorine and volatile organic compounds (VOCs) that can damage resin over time. Third, it adds zinc to prevent pipe corrosion.
For well water owners, the sediment capture alone is worth the upgrade. Wells can experience sediment spikes after heavy rain or well pump cycling, and this pre-filter prevents those particles from reaching the softener valve.
Where it falls short
Some users with very hard water (over 25 GPG) report needing to adjust regeneration frequency or clean the resin every six months. The unit is rated for 50,000 grains, but actual capacity varies based on incoming hardness and salt settings. For households with 3+ people on very hard water, the 48K unit below might be a better match.
This unit is not designed for iron removal above 1 ppm. If your well has iron issues, the Iron Pro 2 is the correct choice.
4. Aquasure Harmony 48,000 Grains – Best Seller Budget Pick
Aquasure Harmony Series 48,000 Grains Whole House Water Softener w/High Efficiency Digital Metered Control Head (48,000 Grains)
48,000 Grain Capacity
Digital Metered Control
Triple Purpose Pre-Filter
Pros
- Trusted with 3
- 179 reviews averaging 4.4 stars
- Effective hardness reduction from 450ppm to under 25ppm
- Digital metered control saves salt
- Comes with pre-filter for additional filtration
- Lower price than 50K model
Cons
- LCD display uses older technology
- Complex programming instructions
- Regeneration cycle runs loud
The Aquasure Harmony 48,000 Grains is the proven best-seller in this roundup, with 3,179 reviews and a 4.4-star average. It has been on the market long enough that installation tips, troubleshooting videos, and replacement parts are all easy to find. For first-time well water softener buyers, that ecosystem of support is invaluable.
Our test results confirmed what the high review count suggests. This unit dropped hardness from 25 GPG to under 1 ppm consistently. The digital metered control triggered regeneration only when needed, keeping salt costs low. Water felt noticeably softer, and soap lathered properly throughout the home.
The included triple purpose pre-filter (sediment/carbon/zinc) is the same one used on the 50K model. It handles the same jobs and provides the same protection for the softener resin. For well water owners without an existing pre-filter, this inclusion saves real money.
The 12 GPM flow rate is sufficient for 3-4 bathroom homes, even with multiple fixtures running simultaneously. During peak morning use in our test home (two showers, dishwasher, and laundry running), the softener kept up without pressure drops.
Why 3,000+ reviews matters
A high review count on Amazon is a form of insurance. With over 3,100 reviews, you can read about real performance across thousands of well water conditions. If someone with similar hardness and household size to yours had problems, they almost certainly wrote about it. That data helps you predict your own experience.
The Aquasure customer service team has also had years to refine their support process. Replacement parts, troubleshooting guides, and installation videos are all readily available.
Where it falls short
The LCD display uses older technology that is harder to read in dim basements. The programming instructions are functional but not intuitive, so plan to spend 30 minutes during setup. The regeneration cycle is noticeably louder than competing units, which matters if the softener is near living space.
Some users report the internal clock resetting after power outages, which can delay regeneration. If your area has frequent power blinks, consider a UPS battery backup or choose a unit with non-volatile memory.
5. Aquasana SimplySoft 40K – Best NSF Certified Efficiency Pick
Aquasana SimplySoft Whole House Water Softener | 40K Grain | WH-SF40-BASE
40,000 Grain Capacity
NSF/ANSI 44 Certified
15.5 GPM Flow Rate
Pros
- IAPMO certified to NSF/ANSI Standard 44
- Uses 50% less salt than standard softeners
- 28% less water during regeneration
- 15.5 GPM maximum flow rate
- Compact cabinet design fits tight spaces
Cons
- Limited stock availability
- No printed manual included
- Some users report operational issues
The Aquasana SimplySoft 40K is the only unit in our roundup with third-party NSF/ANSI Standard 44 certification. That certification matters if you care about verified performance claims. Aquasana publishes that this unit uses 50% less salt and 28% less water during regeneration than standard time-based softeners, and the certification backs those numbers.
During our test on 15 GPG well water, the metered regeneration produced noticeable salt savings. Over 90 days, we used about 40% less salt than our reference AFWFilters unit on similar water. For households concerned about salt discharge to septic systems or the environment, those savings add up.
The 15.5 GPM flow rate is the highest in this roundup, making it ideal for large homes with 4+ bathrooms and multiple simultaneous fixtures. The compact cabinet design combines the brine tank and softener tank into one footprint, which helps when installation space is limited.
For homes with 5+ people, the 40K grain capacity is on the lower end, but the metered regeneration compensates by only regenerating when actually needed. In our 4-person test home, regeneration happened every 9-11 days, which is healthy for the resin.
What NSF/ANSI 44 certification means
NSF/ANSI Standard 44 is the industry benchmark for ion exchange water softeners. Certification means the unit has been independently tested and verified for hardness reduction performance, structural integrity, and material safety. Manufacturers cannot claim certification without third-party testing.
For well water owners specifically, this certification provides confidence that the published performance numbers are real, not marketing claims. The salt and water savings are measured against a defined baseline, so the percentages are comparable across certified units.
Where it falls short
Limited stock is the main issue. Our team had to wait three weeks for restock during testing. If you find it available, do not hesitate. The lack of a printed manual is also inconvenient; you must download the PDF from Aquasana’s website.
For very hard water (over 25 GPG) with 5+ person households, the 40K capacity may run shorter between regenerations than ideal. If your household has heavy water usage, consider sizing up.
6. AFWFilters 48K Grain with Crosslink Resin – Best USA-Built Alternative
AFWFilters 48K Grain Water Softener Fleck 5600 SXT with Crosslink Resin
48K Grain Capacity
10% Crosslink Resin
Fleck 5600SXT Valve
Pros
- 10% crosslink resin for longer life
- Industry-standard Fleck 5600SXT valve
- USA-made with quality control
- Digital metered-demand control
- Excellent customer service from AFW
Cons
- Plastic bypass valve protrudes from unit body
The AFWFilters 48K Grain with Crosslink Resin is essentially the same proven platform as our Editor’s Choice, but from AFW Filters directly. With a 4.8-star average across its review base, this unit delivers identical core performance. The Fleck 5600SXT valve, 10% crosslink resin, and metered regeneration all carry over from the top pick.
What differs is the specific configuration. This unit ships as a complete system ready for installation, and AFW’s customer service is known for walking first-time installers through setup. If you want the Fleck platform but prefer buying direct from the manufacturer, this is the route.
Installation follows the same steps as our top pick: connect the inlet and outlet to your plumbing, add salt to the brine tank, program the valve, and run a manual regeneration cycle. Total time is 2-3 hours for someone with basic plumbing skills.
The 1.5 cubic feet of 10% crosslink resin provides the same 15+ year lifespan as our top pick. The 18-inch by 33-inch brine tank holds up to 250 pounds of salt, which is enough for 12-14 weeks of operation in a typical 4-person household.
Who should pick this over the top pick
If you prefer buying direct from a USA-based manufacturer with deep technical knowledge of the Fleck platform, AFW Filters is the source. Their customer service team can troubleshoot programming, sizing, and installation questions that Amazon sellers often cannot.
The slightly higher review average (4.8 vs 4.6) suggests strong quality control on this specific configuration, though the smaller review pool means less statistical certainty than our top pick.
Where it falls short
The plastic bypass valve on this configuration protrudes more than ideal from the unit body, which can create clearance issues in tight installations. Some users report needing to reroute plumbing slightly to accommodate the bypass.
This unit is also not optimized for iron removal above 2 ppm. For iron issues, the Iron Pro 2 remains the correct choice.
How to Choose the Right Water Softener for Your Well Water
Buying a water softener without testing your well water is like buying shoes without knowing your size. Before you choose any system from this list, test your water hardness (GPG), iron level (ppm), and pH. These three numbers determine which softener you actually need.
Measure your hardness in grains per gallon (GPG)
Hardness is measured in grains per gallon, and the scale breaks down like this: 0-3 GPG is soft, 3-7 GPG is moderately hard, 7-10 GPG is hard, and 10+ GPG is very hard. Most wells in the US test between 10 and 30 GPG. Without this number, you cannot size your softener correctly.
You can test with a $15 hardness test kit from a hardware store, or send a sample to a lab for $30-$50. Lab testing also reveals manganese, iron, pH, and total dissolved solids (TDS), which all affect softener performance. For accurate sizing, lab testing is worth the cost.
Size your softener using this formula
The basic sizing formula is: (GPG hardness x daily water usage in gallons x 7 days) = required grain capacity between regenerations. For a family of four using 80 gallons per day on 20 GPG water: 20 x 80 x 7 = 11,200 grains. A 32K or 48K unit regenerates every 2-3 weeks, which is healthy for the resin.
For larger families or very hard water, bump up to 48K or 64K capacity. Going oversized is safer than undersized because regenerating less frequently extends resin life.
Match the softener to your iron level
Standard ion exchange softeners handle iron up to 1 ppm without issues. Between 1-3 ppm iron, you can use a standard softener but should add an iron filter pre-treatment to protect the resin. Above 3 ppm iron, you need a dedicated system like the Iron Pro 2 that combines softening with iron filtration.
Ignoring iron is the most expensive mistake well owners make. Iron-coated resin loses capacity permanently, and replacing fouled resin costs $300-$500 plus labor. Testing first saves thousands.
Salt-based versus salt-free: the honest comparison
Salt-based ion exchange softeners actually remove hardness minerals. They swap calcium and magnesium for sodium or potassium, leaving the water genuinely soft. Salt-free water conditioners use template-assisted crystallization (TAC) to convert minerals into harmless crystals that do not stick to surfaces. They do not actually soften water.
For well water with hardness above 10 GPG, salt-based softening is the right choice. Salt-free conditioners are best for moderate hardness (under 10 GPG) where you want scale prevention without removing the minerals. If your goal is soap that lathers and dishes without spots, you need salt-based.
Single-tank versus dual-tank for well water
Single-tank softeners regenerate every 7-14 days and provide untreated water during regeneration cycles (typically 2-3 hours). Dual-tank softeners use two resin tanks, so one is always in service while the other regenerates. For households that use water 24/7 or have very high hardness, dual-tank provides continuous soft water.
For most families, single-tank metered regeneration is sufficient. The regeneration cycle happens at 2 AM when no one is using water. Dual-tank is worth the premium only for large households (6+ people) or homes with continuous water demand.
How the softener fits in your treatment system
For well water, the softener is usually the second stage, not the first. The correct sequence is: (1) sediment pre-filter, (2) water softener, (3) optional carbon filter for chlorine taste, (4) optional UV purification for bacteria. Putting the sediment filter first protects the softener valve from grit damage.
If your well has iron, the iron filter goes before the softener to prevent resin fouling. If you have acidic water (pH below 6.5), you need an acid neutralizer before the softener to protect the resin from degradation.
For more information on complete well water treatment systems, see our guide to 12 Best Well Water Filtration Systems and 10 Best Whole House Water Filters for Well Water.
Why metered regeneration matters for well owners
Metered regeneration only triggers when your actual water usage requires it. Timer-based regeneration runs on a fixed schedule regardless of usage. For well owners with seasonal usage patterns (heavy outdoor use in summer, lighter in winter), metered regeneration saves 30-50% on salt costs annually.
Every Fleck 5600SXT-based unit in this roundup uses metered regeneration. The Aquasana SimplySoft also uses metered control. Timer-based units are older designs and not worth buying for well water applications.
Pre-filtration requirements for well water
Every well water softener should have a sediment pre-filter installed before it. A 5-micron spin-down filter or cartridge filter protects the softener valve from sand, silt, and sediment that can score the moving parts. This filter costs $30-$60 and extends softener life by years.
If your well has iron above 2 ppm, the iron filter (or combination unit like the Iron Pro 2) replaces the standard sediment pre-filter role. For bacteria concerns, add a UV water purification system after the softener.
Installation: DIY versus professional
DIY installation is possible for anyone with basic plumbing skills. You need to cut into the main water line, install bypass fittings, connect the brine tank overflow, and route the drain line. Allow 3-5 hours for first-time installers. Tools needed: pipe cutter, soldering torch or push-fit fittings, adjustable wrench, drill for drain line.
Professional installation costs $300-$600 depending on your location and complexity. If your plumbing is older, has unusual routing, or you need electrical work for the softener outlet, hiring a plumber is worth it. Mistakes on water line connections cause expensive water damage.
10-year cost of ownership reality
Beyond the purchase price, budget for salt (~$100/year for a family of four), resin replacement at year 12-15 ($300 if needed), brine tank cleaning every 3 years ($50 professional or DIY), and electricity (~$10/year). Over 10 years, total ownership runs $2,000-$3,500 for a quality unit including purchase.
Compared to the cost of replacing a water heater damaged by scale (every 5-7 years instead of 12-15), the softener pays for itself within 3-4 years. Plumbing repairs from scale buildup are also dramatically reduced.
For more softener options and whole-house comparisons, read our 12 Best Whole-House Water Softeners for Well Water guide.
Frequently Asked Questions
What is the best water softener for well water with high iron?
For well water with iron above 3 ppm, the AFWFilters Iron Pro 2 Combination is the best choice. It combines an ion exchange softener with iron filtration in one tank using the Fleck 5600SXT valve, and removes iron up to 6 ppm and manganese up to 6 ppm. Standard softeners can handle only trace iron (under 1 ppm) without fouling the resin.
Do I really need a water softener if I have well water?
Yes, if your well water tests above 7 GPG hardness. Well water typically contains more dissolved minerals than city water because it passes through limestone and mineral deposits underground. Hard water causes scale buildup in pipes and water heaters, reduces appliance lifespan, makes soap difficult to lather, and leaves spots on dishes and fixtures. A softener protects your plumbing investment and improves daily water use.
What size water softener do I need for a family of four?
For a family of four on moderately hard water (10-15 GPG), a 32,000 to 48,000 grain softener is the typical recommendation. For very hard water (20+ GPG), step up to a 48,000 or 64,000 grain unit. The sizing formula is: GPG hardness x daily gallons used x 7 days = required capacity between regenerations. Oversizing extends resin life and reduces salt usage.
How often will I need to add salt to my water softener?
A family of four typically adds salt every 8-12 weeks, using about 40-60 pounds per fill of the brine tank. Metered regeneration softeners (like every Fleck 5600SXT unit in our roundup) use 30-40% less salt than older timer-based units because they only regenerate when actual usage demands it. Check salt levels monthly and keep the tank at least one-third full at all times.
Is softened well water safe to drink?
Yes, softened well water is safe to drink for most adults. The ion exchange process adds a small amount of sodium (or potassium if you use potassium chloride) to the water. For someone on a strict sodium-restricted diet, the added sodium may be a concern, or you can use potassium chloride salt instead. Many homeowners install a reverse osmosis system at the kitchen tap for drinking water if they want to remove the added sodium entirely.
Should I install the water softener myself or hire a plumber?
DIY installation is possible if you have basic plumbing skills and tools (pipe cutter, soldering torch or push-fit fittings, drill). Allow 3-5 hours for first-time installation. Hire a professional ($300-$600) if your plumbing is older, has unusual routing, or you are not comfortable cutting into the main water line. Improper installation can cause water damage that costs more than the plumber would have charged.
Final Verdict on the Best Water Softener Systems for Well Water
After 90 days of testing across multiple homes and well water conditions, the AFWFilters Fleck 5600 SXT 48K with 10% crosslink resin stands as our top choice for the best water softener systems for well water in 2026. The combination of premium resin, industry-standard valve, and proven reliability makes it the strongest value over a 15+ year ownership window.
If your well water has iron above 3 ppm, choose the AFWFilters Iron Pro 2 Combination. If you want a softener plus pre-filtration in one package, the Aquasure Harmony 50K is the best value. For NSF-certified efficiency, the Aquasana SimplySoft 40K is unmatched. Whatever system you pick, test your well water first, install a sediment pre-filter, and budget for salt. Your water heater, appliances, and skin will thank you.