Rainwater Harvesting in Seattle
Eco-Friendly, Off-Grid Independence—Filtered Right at the Roof
Rain is one of Seattle's most abundant natural resources. So why waste it?
Smart Water Collection Starts at the Roof
With a properly designed rainwater harvesting system, you can collect, store, and reuse rain for irrigation, flushing toilets, washing vehicles, and more. In some setups, with advanced filtration, it can even be treated for potable use.
But here's the truth: your system is only as good as your first line of filtration.
And that starts at the roof.
That's why we recommend MasterShield® as the ideal prefilter for any rainwater harvesting or cistern-based system.
Why MasterShield Works So Well for Rainwater Harvesting
Most rain catchment systems rely on a first-flush diverter or barrel screen to filter out debris. But if you're already pulling sludge and grit off the roof, you're starting dirty—and adding unnecessary wear to your filters, tanks, and pumps.
MasterShield® fixes that by stopping contaminants before they ever leave the roof.
Surgical-Grade Micro Mesh
Filters particles as small as 50 microns—that's smaller than most pollen, grit, or moss spores.
Copper-Infused for Algae Control
Copper thread woven through the mesh naturally kills algae, mildew, and moss—without chemicals.
Self-Cleans at Roof Pitch
Installed to match the slope of your roof, MasterShield sheds organic debris before it can rot and leach into your cistern.
Reduces Maintenance
Less gunk in the tank = less cleaning, less downtime, and longer lifespan for filters and pumps.
How It Works With Cistern Systems
Here's how MasterShield plays into a rainwater harvesting system:
Rain Hits Roof
MasterShield immediately filters out leaves, grit, pollen, and moss.
Clean Water Flows
Clean water flows into your gutters, then through a screened downspout into a first-flush diverter (if used).
Storage System
Water continues into your buried cistern or above-ground storage tank.
Distribution
From there, water can be pumped to a filtration hub, garden, toilet line, or greywater system.
The Result
MasterShield acts as a first-stage filter, keeping your storage system dramatically cleaner from day one.
Smart, Sustainable, & Scalable
Whether you're trying to:
Cut Your Water Bill
Reduce dependency on municipal water with collected rainwater for non-potable uses.
Grow a Garden Off-Grid
Perfect irrigation solution for sustainable gardening and landscaping projects.
Reduce Storm Drain Load
Keep rain from overloading storm drainage systems while capturing valuable water.
Water Independence
Gain more control over your water usage with your own collection system.
…a rainwater catchment system with MasterShield up top sets you up for cleaner, lower-maintenance success.
Why Seattle Homeowners Are Catching On
Our roofs see more rain than most places in the country
Organic debris from trees is a constant battle
Water utility costs and conservation efforts are rising
Moss and pollen are year-round issues—and most filters aren't built for them
MasterShield isn't just a gutter guard. It's the best roofline pre-filter available, and it helps turn your home into a smarter, greener system.
Systems for Every Scale
From small residential setups to large-scale water independence systems
Small Barrel Systems
Perfect for garden irrigation and small-scale water collection.
1,000-Gallon Cisterns
Mid-scale systems for significant water storage and household use.
Full Off-Grid Setup
Complete water independence systems with advanced filtration.
Ready to Start Harvesting Smarter?
Call MossEaters Or Schedule Your Free Roof & Gutter Evaluation
We'll walk you through how MasterShield can be tailored to your roof and matched to a catchment system—whether you want a small barrel, a 1,000-gallon cistern, or a full-scale off-grid water setup.