Water treatment systemProfessional Advanced Water Treatment Solutions in Lubbock
Lubbock's hard water can wreak havoc on your plumbing, appliances, and skin. Cotton City Plumbing is proud to partner with Navien to bring you the most advanced water treatment solutions on the market. We specialize in the complete line of Navien premium water treatment products, designed to protect your home and provide your family with the cleanest, healthiest water possible. From whole-home conditioning to under-sink purification, we have the perfect solution for your needs.
Navien WEC Series
The ultimate whole-home water treatment solution. The WEC600 combines powerful filtration with advanced conditioning to deliver exceptional water quality throughout your entire house.
- Model: WEC600
- Reduces chlorine and chemicals
- Protects plumbing from scale
- Smart monitoring technology


Navien PeakFlow Series
The eco-friendly, salt-free solution for scale prevention. PeakFlow technology transforms calcium and magnesium to prevent them from sticking to pipes and appliances—without removing healthy minerals.

Navien WUR500 Series
Premium under-sink Reverse Osmosis (RO) system. Delivers bottled-quality water directly from your tap by removing up to 99% of contaminants.
- 5-stage filtration
- Smart faucet indicator

Navien WUA500 Series
Advanced ultra-filtration system that retains healthy minerals while removing harmful chemicals, chlorine, and sediment.
- No wastewater
- Compact design
Our Process
Water Analysis
We test your water hardness and quality to recommend the perfect system for your home.
System Selection
Choose from our premium Navien lineup based on your specific needs and budget.
Expert Installation
Our licensed technicians install your new system cleanly and efficiently.
Pure Water Enjoyment
Start enjoying cleaner, better-tasting water immediately after installation.
Frequently Asked Questions
Save Today. Plan Ahead.
Save on Advanced Water Treatment Solutions — and Plan Ahead
Current Specials
Save on Your Service Call
New customers can save $25 on any service call. See current drain, water-heater, senior, military, and maintenance-plan offers.
Explore SpecialsCotton City Comfort Plans
Proactive Plumbing Care
Plans start at $35 per month and include scheduled plumbing visits, member repair savings, and higher-tier priority benefits.
View Comfort PlansOffers are subject to their stated terms and conditions. View the full offer or plan details before scheduling.
Advanced Water Treatment Solutions in Every Lubbock Neighborhood
Cotton City Plumbing is Lubbock's hometown plumber — licensed, insured, and familiar with the plumbing systems in every neighborhood across the city. Click your neighborhood to see jobs we've completed near you.
