*Only Available in Arizona
Superior Technology.
Better Performance.
We Remove What Others Don’t.
Truly Honest Water.
Whole-House Water Filtration You Can Trust
Honest Water Filter brings clarity, trust, and sustainability to every drop — proudly veteran-owned and made in the USA.
Don’t let Arizona’s hard water ruin your appliances, dry out your skin, or waste energy.
Without the right filtration system, mineral buildup and chlorine can damage your plumbing and affect your family’s health.
Our Value
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Health
Enjoy cleaner, better-tasting water free from chlorine, lead, and harmful contaminants.
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Efficiency
Reduce waste and protect Arizona’s most precious resource — water.
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Simplicity
Easy installation, no maintenance, and no complicated systems — just clean, honest water.
NSF-Certified
When it comes to your home’s water, certifications matter. Honest Water Filter AZ uses only NSF-certified components, meaning every part of our system meets the highest global standards for safety, performance, and contaminant reduction.
Whole-House Water Filtration
Experience cleaner, safer water throughout your home with the Honest Water Filter Platinum Plus System — ideal for removing bacteria, cysts, chloramines, and other tough contaminants.
Powerful protection: Filters up to 120,000 gallons at 7.0 GPM*
Multi-layer filtration: Targets large particles, bacteria, and chlorine-based chemicals for complete water purification
Better taste & smell: Reduces chloramines and chlorine that can affect the flavor and odor of water
Healthier water: Reduces microbial cysts and bacteria resistant to public disinfection systems
Protects plumbing: Prevents hard water buildup and corrosion with food-grade polyphosphates
Certified performance: NSF-rated for chemical reduction and long-lasting efficiency
High-quality whole-house water treatment built to handle today’s toughest water challenges.
Technical Specifications
Flow Rate: 7.0 GPM
Capacity: 120,000 gallons*
System Type: Whole-house filtration with multi-stage protection
Filtration Stages:
Defender Pre-Filter (10.0 micron): Reduces larger particulates, sediments, and turbidity (dirt) to protect the main cartridges (150,000-gallon capacity; replace every 12–18 months)
Catalytic Carbon Block Filter: Made from premium coconut shell carbon, this stage reduces smaller organics and particulates, as well as chlorine and chloramines that affect taste and damage plumbing systems
Sub-Micron Filter (0.2 micron): Reduces 99.95% of microbial cysts and bacteria, including Cryptosporidium, Toxoplasma, Giardia, and Entamoeba — contaminants increasingly resistant to municipal water disinfection
Polyphosphate Treatment: Food-grade, FDA-approved polyphosphates act as a scale inhibitor, binding hard-water minerals like calcium and magnesium to prevent scale buildup and corrosion
Operation: No electricity or drain required
Certification:NSF rated for chemical reduction up to 120,000 gallons for a two-cartridge system
Compliance: Suitable for municipal water; Honest Water Filter Company consultation required for well applications
Notes
*When used with the Defender Pre-Filter or Diamond Ultra-Filter under normal municipal water conditions. Honest Water Filter Company consultation required for well applications. Polyphosphates recommended for water hardness up to 20 grains per gallon.
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The Platinum Plus System delivers advanced protection from the toughest water contaminants found in modern municipal systems. With multi-stage filtration, it reduces bacteria, cysts, chlorine, and chloramines—improving taste, protecting plumbing, and ensuring cleaner, safer water throughout your home.
Whole-House Water Filtration
Enjoy cleaner, better-tasting water throughout your home with the Honest Water Filter Silver Plus System.
It’s an affordable, long-lasting solution designed to reduce chlorine, odors, and particles — without needing electricity or a drain.
Powerful performance: Filters up to 530,000 gallons at 15.0 GPM*
Multi-stage protection: Uses a pre-filter and dual Silver Plus cartridges for maximum water clarity
Cleaner, safer water: Reduces chlorine, dirt, and organic material that affect taste, smell, and health
Protects your plumbing: Helps prevent scale buildup and corrosion caused by hard water minerals
Low maintenance: Long-lasting design that runs efficiently with no power required
Certified quality: NSF-rated for chemical reduction and proven performance under real-world conditions
Technical Specifications
Flow Rate: 15.0 GPM
Capacity: 530,000 gallons*
System Type: Whole-house filtration with Defender pre-filter and dual Silver Plus cartridges
Filtration Stages:
Defender Pre-Filter (10.0 micron): Reduces larger particulates and contaminants to extend cartridge life (150,000-gallon capacity)
Silver Plus Cartridges (5.0 micron, x2): Reduce sand, silt, turbidity, and organic particulates; coconut shell–activated carbon removes 99.95% of chlorine
Polyphosphate Treatment: Food-grade, FDA-approved polyphosphates act as a scale inhibitor, binding minerals like calcium and magnesium to prevent scaling and corrosion
Operation: No electricity or drain required
Certification:NSF rated for chemical reduction up to 530,000 gallons for a two-cartridge system
Compliance: Suitable for municipal water; Honest Water Filter Company consultation required for well applications
Recommended Use: Polyphosphates recommended for water hardness up to 20 grains per gallon
The Best Whole-Home Water Filter
Get clean, safe water from every tap in your house with the Honest Water Filter Diamond System.
Sub-micron 0.015 filtration reduces 99.99% of harmful cysts, bacteria, and viruses that especially impact immune-compromised individuals.
Long-lasting: Field tested to treat up to 1 million gallons.
Provides super clean water: Reduces 99.99% of bacteria, cyst, viruses, and other tiny particles.
Low maintenance: It cleans itself and runs efficiently, saving you time and money.
Works anywhere: Great for city water or well water (just need a simple well report).
Proven quality: Fully certified to meet strict safety and performance standards.
Upgrade option: Add our Silver Plus filters to reduce chemicals and prevent scale buildup.
Municipal water systems do their best—but some contaminants can still slip through. Bottled water helps for drinking, but not for bathing, cooking, or washing.
The Diamond System gives you better water everywhere in your home, protects your plumbing, and helps you ditch the plastic bottles.
Technical Specifications
Flow Rate: 15.0 GPM
Capacity: Up to 1,000,000 gallons*
Filter Type: Sub-Micron 0.015 (four-log, 99.99% reduction; reduces particles larger than 0.015 microns, including bacteria, cysts, and viruses)
System Type: Whole-house filtration system (complete design, ready to install)
Maintenance: Self-cleaning cycles extend cartridge life and maintain filtering ability
Operating Cost: Low-cost operation with flexible programming for most water sources, including wells (well report required)
Certifications: NSF Standard 42, NSF Standard 53, and NSF P-231
Performance:
6-log reduction of bacteria
4-log reduction of viruses
Certified for reduction of cysts including Cryptosporidium, Toxoplasma, Giardia, and Entamoeba
Independently tested per EPA Guide Standard and Protocol for Microbiological Water Purifiers
Water Temperature: Tested at >40°F
Optional Add-On: Silver Plus post cartridge for additional chemical reduction and scale control (NSF Certified to treat up to 530,000 gallons)
Compliance: Meets all EPA regulatory protocols for water contact safety and plumbing pressure requirements
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The Silver Ultra-Filter is our most advanced whole-house filtration system—combining the deep purification power of the Diamond System with the added chemical and scale reduction of Silver Plus cartridges. It delivers exceptional protection against bacteria, viruses, and chlorine-based contaminants while softening hard water and extending the life of plumbing and fixtures.
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The Diamond Ultra-Filter delivers the highest level of biological water purification for your entire home. Its sub-micron filter reduces 99.99% of bacteria, viruses, and cysts—providing crystal-clear, safe water from every tap. Engineered for performance and longevity, it’s the gold standard in pure filtration.
High-Quality Drinking Water Filtration
Enjoy fresh, clean drinking water straight from your faucet with the Honest Water Filter Titanium Chlorine Drinking Water System.
This system delivers exceptional water quality without wasting water — a smart, sustainable alternative to traditional reverse osmosis (R/O) units.
Eco-friendly performance: Filters up to 55,000 gallons without wasting water (R/O systems can waste 3–4 gallons to make just 1)
Healthier water: Retains the healthy minerals your body needs while removing contaminants
Powerful purification: Reduces 99.95% of chlorine, improving taste and smell for cooking, rinsing, and drinking
Advanced protection: Sub-micron filter removes 99.95% of microbial cysts and bacteria such as Giardia, Toxoplasma, Entamoeba, and Cryptosporidium
Compact & convenient: Installs neatly under the sink and connects directly to your faucet — no extra tank or drain line needed
Smarter than bottled water: Save hundreds of gallons and eliminate plastic waste while enjoying cleaner, better-tasting water
A simple, efficient solution for pure, great-tasting water — without the waste of reverse osmosis.
Technical Specifications
Flow Rate: 3.0 GPM
Capacity: Up to 55,000 gallons*
System Type: Under-sink drinking water filtration system
Filter Type:Catalytic Carbon Block Filter (0.2 sub-micron) made from premium coconut shell carbon
Filtration Performance:
Reduces 99.95% of chlorine
Reduces organic contaminants and microbial cysts including Giardia, Toxoplasma, Entamoeba, and Cryptosporidium
Maintains beneficial minerals for healthier, better-tasting water
Operation: Does not waste water, unlike traditional reverse osmosis systems
Installation: Compact cartridge design fits easily under the sink; connects directly to the faucet
Performance Advantage: No drain or wastewater; more space-efficient than reverse osmosis units
Notes
*Under normal municipal water conditions. Unlike traditional Reverse Osmosis (R/O) systems, the Titanium Filter does not waste water.
Whole-House Hard Water Solution
Protect your pipes, fixtures, and appliances from damaging scale and corrosion with the Honest Water Filter Bronze System.
This system treats hard water — which affects 85% of U.S. homes — by reducing minerals that cause buildup and white residue.
Powerful protection: Treats up to 150,000 gallons at 15.0 GPM*
Stops scale buildup: Polyphosphates bind calcium and magnesium so they can’t harden on surfaces
Cleaner fixtures & dishes: Reduces white film and spots caused by mineral deposits
Protects plumbing: Keeps pipes, faucets, and water-using appliances running efficiently
Low maintenance: Long-lasting cartridges with easy replacement every 12–18 months
For city water use: Designed for municipal water systems (not for wells)
A simple, effective way to protect your home from the damage caused by hard water.
Technical Specifications
Flow Rate: 15.0 GPM
Capacity: 150,000 gallons*
System Type: Whole-house hard water solution
Filtration Stages:
10-Micron Filter Cartridge: Reduces larger particulates and protects against sediments (replace every 12–18 months)
Polyphosphate Treatment: Food-grade, FDA-approved polyphosphates act as a scale inhibitor, binding minerals like calcium and magnesium so they cannot form scale or corrosion
Operation: No electricity or drain required
Performance: Reduces inorganic contaminants and protects plumbing systems, fixtures, and appliances from mineral buildup
Compliance: For use on municipal (city) water only; not designed for well applications
Notes
*For use on municipal water only. Not for well water applications.
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The Titanium Drinking Water System delivers clean, great-tasting water straight from your faucet—without wasting a drop. Unlike traditional reverse osmosis systems, Titanium uses a high-quality catalytic carbon block to reduce chlorine, organics, and microbial cysts while retaining the healthy minerals your body needs. Compact and efficient, it fits neatly under the sink and connects directly to your faucet for pure, eco-friendly hydration every day.
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The Bronze System is your home’s first line of defense against hard water. Using food-grade polyphosphates, it binds minerals like calcium and magnesium to prevent scale buildup, corrosion, and white film on fixtures—protecting your plumbing, appliances, and water-using systems. Simple, affordable, and effective hard water protection for the whole house.
We understand the challenges of living with Arizona’s hard, mineral-heavy water — we live here too.
Developed by water experts with over 40 years of experience and trusted nationwide by eco-conscious homeowners.
The Plan
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Select Your System
Give us a call and we’ll help you choose the model that fits your home size and water type.
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Book a Trusted Dealer
Book with Gold Star Plumbing, our trusted partner, who install your Honest Water Filter professionally in your home.
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Enjoy Clean Water Instantly
Taste the difference and protect your family & home.
Honest Products. Proven Results.
Eric breaks down the key differences between the Silver, Gold, and Platinum Honest Water Filter systems — each designed to deliver clean, reliable water at a level that fits your home, your needs, and your budget.
