The Mam Nature Blog

14 August 2026·6 min read

Why Is My Whole House Water Filter Turning the Water Black? Causes and Fixes

Why is my whole house water filter black? The most common causes — carbon fines, manganese and biofilm — and how to fix each one safely.

11 August 2026·6 min read

How Long Does a Whole House Water Filter Last? Housing, Cartridge, and System Lifespan

A whole house water filter housing lasts 10–20 years; the cartridge lasts 12 months. What determines system longevity and how to maximise service life.

How to Replace a Whole House Water Filter Cartridge — Step by Step

Replacing a whole house water filter cartridge takes about 10 minutes. A step-by-step guide from closing the bypass to the post-replacement flush.

7 August 2026·5 min read

Whole House Water Filter Maintenance Guide: Annual and Ongoing Care

Whole house water filter maintenance: annual cartridge replacement, particle pre-filter care, O-ring checks, and the signs you should replace early.

4 August 2026·6 min read

Revitalized Water vs Filtered Water: Is There a Health Difference?

Revitalized water vs filtered water: we compare contaminant removal (well documented) with structural treatment (limited evidence) so you can choose wisely.

31 July 2026·8 min read

What Is Water Revitalization? Science vs Marketing Explained

What is water revitalization? The science behind structured water and vortex treatment, which claims are studied, and what physical changes are measurable.

28 July 2026·9 min read

What Is PFAS? The Complete Guide to Forever Chemicals

What is PFAS? Over 12,000 synthetic chemicals linked to cancer, thyroid disease and immune harm. Chemistry, health risks, rules, and how to protect yourself.

24 July 2026·10 min read

Pharmaceutical Residues in Tap Water: What's There and What Removes It

Pharmaceutical residues in tap water: antibiotics, hormones and antidepressants found in European rivers. What passes treatment and what filtration removes.

21 July 2026·7 min read

PFAS Health Risks: Cancer, Hormones, and What the Science Actually Says

PFAS health risks explained: IARC classified PFOA as a Group 1 human carcinogen in 2023. Cancer, thyroid, cardiovascular, immune and reproductive effects.

17 July 2026·9 min read

How to Know If Your Water Has PFAS: A Practical Step-by-Step Guide

PFAS has no taste, smell or colour. How to request your water quality report, spot hotspot regions, order a lab test, and read results against health limits.

14 July 2026·7 min read

How to Size a Whole House Water Filter: Flow Rate, Household Size, and More

Whole house water filter sizing guide: flow rate, household size, water hardness and cartridge capacity — and why the wrong size causes pressure drops.

10 July 2026·7 min read

Disadvantages of Whole House Water Filters — Honest Assessment

Disadvantages of whole house water filters: upfront cost, flow rate impact, installation requirements and maintenance. An honest assessment before you buy.

7 July 2026·7 min read

PFAS

Do Whole House Water Filters Remove PFAS? What the Evidence Actually Shows

Do whole house water filters remove PFAS? Which technologies actually work, what removal rates to expect, and how the Mam Nature amyloid filter compares.

3 July 2026·9 min read

How Much Does a Whole House Water Filter Cost? 2026 Guide

Whole house water filter cost in 2026: purchase €1,090–€3,598, installation €0–€200, cartridges €240 a year, plus 5- and 10-year TCO comparisons.

30 June 2026·11 min read

Swiss Water Dynamizer: What the 18 Manufacturer Principles Mean

An evidence-aware explanation of the Swiss Water Dynamizer's 18 manufacturer principles, what the device physically does, and which health claims are not established.

30 June 2026·7 min read

Best Whole-House Hard Water Solution Without Salt or Chemicals

Best no-salt hard water solutions for the whole house: TAC, magnetic conditioning and the Water LIME — which works, at what hardness, and at what cost.

26 June 2026·8 min read

How Hard Water Damages Home Appliances — and What It Costs You

Hard water limescale cuts boiler efficiency, destroys washing machine elements and blocks dishwasher spray arms. The real costs and how to prevent damage.

23 June 2026·8 min read

Hard Water Solutions Guide: What Actually Works and What Doesn't

Hard water solutions compared: salt softeners, magnetic, TAC, catalytic and salt-free methods, with honest effectiveness ratings for boilers and pipes.

19 June 2026·10 min read

Swiss Quality

ETH Zurich vs NSF Certification for Water Filters: What Each Actually Proves

ETH Zurich laboratory confirmation and NSF certification are both cited in filter marketing. What each tests, who runs it, and what the results really prove.

16 June 2026·8 min read

Swiss Quality

What ETH Zurich Water Filter Certification Actually Means

ETH Zurich is not a commercial test lab — it is a leading engineering university. What the amyloid fibre research confirmed, and how it compares to NSF.

12 June 2026·10 min read

Whole House Water Filter Installation Checklist: Everything You Need Before, During, and After

A practical whole house water filter installation checklist: tools, pre-install checks, step-by-step fitting, first use and the annual service schedule.

9 June 2026·6 min read

Can You Install a Whole-House Water Filter Without a Plumber?

The honest answer: the mains connection is a plumber's job — here is why, what it costs, how long it takes, and the parts you genuinely can do yourself, like the annual cartridge swap.

5 June 2026·7 min read

Whole House Water Filter Installation Guide: Step-by-Step for 2026

A step-by-step guide to installing a whole house water filter on the main supply line: tools, pipe types, bypass valve and first-use flushing explained.

2 June 2026·10 min read

Salt-Free Water Softener Alternatives: What the Science Says in 2026

Salt-free water softener alternatives compared: TAC, magnetic conditioners, catalytic media and the Water LIME, with real-world performance caveats.

29 May 2026·10 min read

Water Softener vs Whole House Filter: They Solve Different Problems

A water softener removes hardness minerals; a whole-house filter removes PFAS, heavy metals and chlorine byproducts. The difference, and when you need both.

22 May 2026·10 min read

Best Whole House Water Filter 2026: How to Choose Based on What Your Water Actually Contains

Best whole house water filter 2026: what each filter type actually removes, what test evidence to look for, and which system fits your household.

19 May 2026·11 min read

Point of Entry Water Filter: What It Is, How It Works, and Who Needs One

A point of entry water filter treats every tap at the main supply line. How POE systems work, what they remove, and how they compare to under-sink units.

14 May 2026·8 min read

How Much Water Does Reverse Osmosis Waste? Ratios Explained

EPA says a typical point-of-use RO system sends at least 5 litres to drain per litre treated. Compare ratios, calculate annual waste and check your model.

12 May 2026·9 min read

How ETH Zurich University Removes 99.9997% of Radioactive Waste from Hospital Water

Radioactive water treatment at ETH Zurich: amyloid hybrid membranes removed 99.9997% of radioactive isotopes from real hospital wastewater. What it shows.

13 March 2026·9 min read

Calcite vs Aragonite: Understanding Limescale Crystal Types

Calcite vs aragonite limescale explained: the crystallography, why aragonite does not stick to pipes, and how magnetic treatment triggers the conversion.

5 March 2025·6 min read

26 February 2025·7 min read

Swiss Quality

Swiss Water Filtration Standards: Why "Swiss Made" Matters

Swiss water filtration standards explained: Swiss manufacturing requirements, ETH Zurich laboratory test protocols, and why Swiss Made matters for water.

19 February 2025·9 min read

PFAS in European Tap Water: Hotspots, Limits & Testing

Where PFAS contamination is documented in Europe, how EU drinking-water limits work, and how to check your local supply before choosing a filter.

12 February 2025·8 min read

Is Structured Water Scientifically Proven? Evidence Review

Structured water is not proven to improve human hydration or health. Review the evidence for hexagonal water, EZ water and vortex treatment.

5 February 2025·7 min read

How to Test Water Quality at Home: A Step-by-Step Guide

Learn how to test home water quality with DIY kits and professional labs. Understand what results mean for PFAS, hardness, heavy metals, and bacteria.

29 January 2025·9 min read

Whole-House Filtration vs. Reverse Osmosis: How the Systems Differ

A technical explainer of point-of-entry filtration and point-of-use reverse osmosis: treatment scope, contaminant evidence, minerals, reject water, installation and upkeep.

22 January 2025·7 min read

Magnetic Limescale Treatment: Does It Really Work?

Does magnetic limescale treatment actually work? We examine the peer-reviewed science behind magnetic water conditioners and explain when they are effective.

15 January 2025·8 min read

Is PFAS in Tap Water Safe? What Swiss Tests Reveal

PFAS "forever chemicals" are found in tap water across Europe. Swiss laboratory tests reveal which levels are dangerous and how to remove them effectively.