Water Treatment Products for Homes and Businesses on Maui, Oahu and Kauai

Treat your water with these state-of-the-art filtration products!

If you are looking for state-of-the-art water filtration products to install in your home or business, you've come to the right place. Here at Sun King, we proudly supply and install a number of water filtration products from industry-leader EcoWater. Read on to learn more about these products, and contact our team at (808) 871-9721 today!

Available Products


New from EcoWater, the ERR3700 Series is a powerful water softener ideal for treating municipal water supplies.
Features of the ERR3700 Series:

• HydroLink Plus® Wi-Fi and Smartphone App Monitoring
• Wi-Fi enabled HydroLink Plus® for Notifications and Smart Water Usage Features
• HydroLink® patented Two-Way Remote Monitoring Available
• Water Meter 
• Patented Electronics Digital Demand Module 
• High-Quality Fit and Finish with Dampened Hinge Salt Cover
• Multi-Wrap Fiberglass Reinforced Resin Tank 
• Full One-Inch Riser with Self-Cleaning Distributors 
• Coconut-Shell Carbon with Lifetime Warranty 
• Positive-Action Brine Valve
• Automatic Salt-Level Detection


The ETF2300AIV from Eco-Water is a chemical-free system that infuses fresh air into your supply, providing oxidation to facilitate chemical-free cleaning.
 ETF2300AIV Series Features:

• Air Aspirated Chemical-Free Filter - Fresh air provides oxidation and cleans water without the use of harmful chemicals.
• Electronic Timer Controls with HydroLinkPlus® Wi-Fi and Smartphone App Monitoring
• Water Meter 
• Naturally Aspirated Air Induction
• Multi-Wrap Fiberglass Reinforced Media Tank 
• Full One-Inch Riser 
• Multi-Cycle Valve with Easy-Clamp Ring and Patented Coated Disc
• Models ETF2300AIV 10" & 12" Ship with Zeolite Media for Iron Removal
• Models ETF2300EIV 10" & 12" Ship Without Media, Allowing for Loading Media of Choice
• Washed Quartz Underbedding 


The HERO 375 Reverse Osmosis (RO) system provides high-quality water through a three-step, state-of-the-art filtration system. Water is first directed through a powerful pre-filter to remove unwanted particulate matter. Then, it is pressure-forced through a semipermeable membrane for a second round of filtration. Filtered water is stored until needed, and passes through a final carbon absorption block filter before use.

HERO 375 Reverse Osmosis (RO) Features:

• Patented HydroLink® communication technology displays of valuable product performance, water usage, and filter life information remotely when installed in conjunction with the EcoWater Series 3500/3700 product line.
• Industry rated, 50 gallons per day membrane production rate, 
• Enclosed filters ensure cleanliness and ease of replacement.
• A final, carbon post-filter removes tastes and odors
• Changing filters does not require turning off the water
• Tested and Certified to NSF/ANSI Standard 58 by NSF International.

The HERO 375 also comes with a host of available options and scalable water filtration solutions. Contact our team at Sun King to learn more!


The EPS 1000 Series is an EPA-certified water filtration system microbiological drinking water purification system designed to remove bacteria, viruses and cysts such as giardia and cryptosporidia from water without the use of ultra violet technologies. Instead, the EPS 1000 uses a dual-filter system to effectively remove volatile organic compounds.  The EPS 1000 can be installed on both well water and municipal supplies.
EPS 1000 Benefits Features:

• Provides great-tasting pure water for any use.
• EPA certified and independently tested to reduce 53 volatile organic compounds and reduce lead and chlorine taste/odor in water
• Compact design with no storage tank
• No waste water during filtration process
• Minerals are retained for improved taste
• Built-in fail-safe shut off 
• Encapsulated replacement filters with sealed outer shell to ensure optimal sanitation and dryness

Learn more about custom options for the EPS 1000 by contacting our team at Sun King today!


Reverse Osmosis (RO) drinking water systems provide high-quality water for worry-free drinking or cooking. This state-of-the-art filter will improve the quality of water from wells or municipal water supplies.
Features of the ERO 375 reverse osmosis drinking water system:

• Industry rated, 50 gallons per day membrane production rate, (actual production rate will vary depending on water usage and conditions).
• The filters are enclosed for cleanliness and ease of replacement.
• Changing filters does not require turning off the water, a simple 1/4 turn of the filter shuts off the water and the filter is released at the same time.
• Tested and Certified to NSF/ANSI Standard 58 by NSF International.

Learn more about the many options and upgrades for the ERO 375 water filtration system by contacting our professionals at Sun King!


Like the ERO 375, the ERO 175 utilizes a three-stage filtration process to provide water users with clean and clear water suitable for any use

ERO 175 Features:

• Three-stage filtering process: carbon sediment filter, RO membrane; and a carbon post filter to polish the water before you drink it
• Durable chrome-colored faucet
• NSF tested and certified
For a list of the impurities reduced by the ERO 175 reverse osmosis system, please contact your EcoWater Pro.

Quality Guaranteed

At Sun King, we proudly stand behind each and every one of the products in our inventory. If you'd like to learn more about any of our available EcoWater water treatment systems, or would simply like to ask our team your water treatment questions, we invite you to contact us at (808) 871-9721 today!
Let us help you find the perfect water treatment product for your home or business!
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