Will it help with hard water? Calcium and Magnesium?

I live in Las Vegas, NV and we have some of the worse hard water. I've had the water filtration system for almost two years and have used this brand the entire time. You can feel the difference immediately.

Does this filter system remove coliform bacteria?

I do not recommend this filter unless you've had your water tested by 3M and they recommend it. I'm a plumbing contractor and I've had serious issues with this filter failing after only a month of use on several occasions (everywhere I've installed it). Water is different everywhere though - getting your water tested is much more reliable in determining whether or not a particular filter is suited to your situation.

Is this suitable for well water? The water has a heavy mineral smell. I want to say it smells like sulphur.

If you look up the filter specs you will have all your questions answered. " aqua-pure ap917hd or ap917hd-s "....With well water I would use a less expensive pre-filter to extend the life of the 917.....John

What is the difference between the ap917hd and the ah917hd-s filter?

The S version has a scale inhibitor

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Description

💧 Elevate your home’s water game—because clean water is the new luxury.

HIGH FLOW NO COMPROMISE - Maintain peak flow rates up to 20 gallons per minute—perfect for busy households and demanding appliances.
EFFORTLESS WHOLE HOME PURITY - Enjoy clean, great-tasting water from every tap with a system designed to protect your entire home.
ROBUST STAINLESS STEEL DURABILITY - Premium 304 stainless steel head ensures long-lasting performance backed by a 25-year limited warranty.
TRIPLE LEVEL FILTRATION FLEXIBILITY - Customize your water quality with three filtration levels to tackle sediment, chlorine taste, odor, and scale.
FRUSTRATION FREE CERTIFIED INSTALLATION - Designed for easy under-sink setup with quick-change cartridges (sold separately) to keep maintenance hassle-free.

The 3M Aqua-Pure 5621104 is a whole house water filtration system featuring a durable 304 stainless steel head and a high flow rate of up to 20 gallons per minute. It reduces sediment, chlorine taste and odor, and scale, ensuring clean water from every tap. Certified frustration-free for easy installation, it offers customizable filtration levels and is backed by a 25-year limited warranty for lasting peace of mind.

Specifications

Manufacturer	3M
Part number	5621104
Item Weight	4.3 Kilograms
Product Dimensions	11.43 x 11.43 x 64.01 cm; 4.3 kg
Item model number	5621104
Color	Blue
Style	Water Filtration System
Material	Stainless Steel Plastic
Power source type	Manual Operation
Installation Method	Under Sink
Item Package Quantity	1
Number Of Pieces	1
Temperature Range	40-100 Degrees Fahrenheit
Flow Rate	2E+1 Gallons Per Minute
Specification met	Certified Frustration-free
Special Features	304 Stainless Steel Head, 1-inch Inlet and Outlet Connections, Peak Flow Rates up to 20 gpm
Included components	AP904 whole house water filter system, stainless steel head, filter housing, AP917HD-S filter cartridge
Batteries Included?	No
Batteries Required?	No

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