Background and Expertise
Marcus Webb has spent 12 years working directly in residential water treatment, starting as a licensed water treatment plant operator before moving into consumer water quality education and research. He is a Certified Water Specialist (CWS) through the Water Quality Association (WQA), the gold-standard professional certification for residential water treatment specialists in the United States.
His professional background gives him firsthand knowledge of how water chemistry affects real households. He spent 6 years operating and maintaining municipal treatment systems and 6 years in consulting work helping homeowners understand and address hard water problems at every budget level, from a $30 shower filter to a $3,000 whole-house softener and filtration system.
Credentials and Memberships
| WQA Certified Water Specialist (CWS) | Water Quality Association - highest residential water treatment credential |
| AWWA Member | American Water Works Association - the leading water treatment professional organization |
| WQA Member | Water Quality Association - consumer and professional water treatment organization |
| Licensed Water Treatment Plant Operator | 6 years experience operating municipal treatment systems |
Research Approach at HardWaterCure
Marcus founded HardWaterCure to fill a gap he noticed while working with homeowners: most online information about shower filters and water softeners was either written by brands (with obvious commercial bias) or by general lifestyle writers with no water treatment background. The result was widespread misinformation about what shower filters can and cannot do, inflated NSF certification claims, and homeowners buying products that would not solve their specific problem.
At HardWaterCure, all product claims go through a verification process Marcus developed:
- NSF certification claims verified directly at nsf.org before any claim is published
- Scientific claims linked to peer-reviewed primary sources (PubMed, USGS, EPA, WHO) - not other review sites
- Brand performance claims that cannot be independently verified are explicitly flagged as such
- Product recommendations are based on filtration science and verified user experience patterns, not affiliate commission rates
- City water data is sourced from official Consumer Confidence Reports and USGS databases
Why Hard Water Expertise Matters
Hard water is a genuinely technical topic where incorrect information causes real consumer harm. Marcus has seen homeowners spend money on shower filters that do not address their actual problem (mineral buildup rather than chlorine), buy undersized water softeners because they used the wrong hardness data, and overlook serious scale damage to appliances because they did not understand how quickly limescale forms at high hardness levels.
His goal at HardWaterCure is to give readers the same quality of advice they would get from a professional consultant, for free, presented in plain language anyone can understand and act on.
Published Guides and Reviews
Best Shower Filters for Hair 2026
Best Water Softeners 2026
Hard Water and Hair: The Science
Do Shower Filters Actually Work?
Editorial Standards
Marcus personally reviews every article published on HardWaterCure before it goes live and reviews every buying guide on a quarterly basis. His editing process focuses on three questions:
- Is every factual claim linked to a verifiable primary source?
- Are there any claims that overstate what a product can actually do?
- Does the recommendation genuinely serve the reader, or does it serve the affiliate relationship?
HardWaterCure has a clear editorial policy that affiliate commission rates do not influence product rankings. The AquaBliss SF220 earns a lower commission than the Jolie but is frequently recommended as the budget pick because its value proposition is objectively stronger for most buyers.
Contact Marcus
For corrections to published content, factual questions, or media inquiries, use the contact form. Marcus reads all editorial correspondence personally and responds to correction requests within 72 hours.