

EC4-CAB Water Conditioning System
Smart, Reliable Water Treatment from RainSoft Great Lakes Water Treatment
Experience the power of multi-functional water treatment with the EC4-CAB Water Conditioning System from RainSoft Great Lakes Water Treatment. This advanced system softens, filters, reduces ferrous iron, and clarifies your water—providing an abundant supply of high-quality, luxuriously conditioned water throughout your home.
Sign Up for a
FREE
Water Quality Test
Plus, a $20 gift card as a thank you.

Smart Features
Immediate Condition Response
With the touch of any button, the system wakes up and displays current status information along with any necessary alerts or instructions.
Automatic Power Outage Recovery
If power is interrupted during a regeneration cycle, the EC4-CAB will automatically resume and complete the process once power is restored, ensuring soft water is always available.
Distinctive Alarm Tones
Three distinct alarms alert you to low salt, no salt, or when the system requires service—so you’re never left guessing.

User-Friendly Display
The easy-to-read, two-line LCD screen provides clear scrolling messages to guide you through menus and settings.
Information Center
Access key data including water usage, system performance, and diagnostics—helpful for both you and your authorized RainSoft Great Lakes Water Treatment technician.
Proportional Brine and Rinse
Improve efficiency by using only the amount of salt and water needed for your household’s actual water usage—shorter cycles save time, water, and salt.
How the EC4-CAB System Works

Step 1: Water flows through RainSoft Great Lakes Water Treatment’s durable control valve and enters the resin tank.
Step 2: Hardness minerals are captured via ion exchange resin. An optional carbon bed further polishes the water for enhanced clarity and taste.
Step 3: Fully conditioned water exits through the riser pipe and is distributed throughout your home.
Step 4: At preset intervals, the system regenerates using salt (or optional potassium chloride) to flush retained minerals, resetting the system for continued performance.
Advanced Operating Features
- LCD screen with real-time system info and alerts
- Customizable settings tailored to your household needs
- Smart computer control prevents depletion of treated water
- Automatic daylight saving time adjustment
- Retains time for up to 7 days during power outages
- Retains all program settings permanently
- Calculates optimal salt and water usage for each cycle
Additional Benefits
- Tightly sealed, weather-resistant enclosures protect sensitive control components**
- Brine tank includes built-in overflow protection for added peace of mind
- System can be used with salt or potassium chloride as a regenerant
* Potassium chloride may be used instead of salt.
** Outdoor Model only.
CALIFORNIA RESIDENTS: Water treatment devices sold to retail consumers in California accompanied by certain health claims must be certified by the California Department of Health Services. The following models are certified by the State of California’s Department of Health Services:
- EC4-CAB 60 CV (Certificate 06-1805)
- EC4-CAB 100 CV (Certificate 06-1804)
All other product models are not certified by the State of California for the purpose of making health claims.
Tailored Home Water Systems with a Customer-First Approach








What People Say About Us
Jim Puffer did an excellent job evaluating my water & answering all my questions! He was professional, knowledgeable, patient, pleasant, efficient, & friendly! His demonstrations really helped me understand the quality of my water. Thank you so much, Jim, for your on-time visit to my home & all the valuable information!! Your expertise, & your company's service is invaluable!!! Keep up the great work!!! 😊
We recently had a system installed, and had a great experience working with Great Lakes Water Treatment. The 3 biggest positives: 1) Health: the taste and convenience of the filtered water system has translated into us drinking much more water than we were before 2) Hair: the softened water is much nicer for hair texture and 3) Great install experience: Dom did a great job getting the system set up in a nice, compact way. Thank you!
Absolutely fantastic service and product! Every step of the way, the install and information was first rate. My tap water no longer smells like a swimming pool, and I can drink the Reverse Osmosis without a care. Also, the detergent free washing machine unit is a marvel! I was skeptical, but it's better than advertised. Thanks so much!



RainSoft Great Lakes Water Treatment

Mon-Fri: 9am-5pm
Sat: 10am-1pm