Name: RainFlo 1000-IG Rainwater Collection System – 1000 Gallons
Brand: RainFlo
SKU: RF-1000IG-125-230-340037
Price: 5675.95 USD
Availability: InStock

RainFlo 1000-IG Rainwater Collection System – 1000 Gallons

by RainFlo

SKU RF-1000IG-125-230-340037

Save $772.05

$6,448.00

$6,448.00 - $6,448.00

$6,448.00

$5,675.95

$5,675.95 - $5,675.95

$5,675.95

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RainFlo 1000-IG Rainwater Collection System

Tired of relying solely on municipal water or dealing with rising utility bills? The RainFlo 1000-IG In-Ground Rainwater Harvesting System offers a powerful and professional solution to collect, filter, store, and distribute clean rainwater, right from your own property. Whether you're outfitting a home, farm, or commercial site, this complete rainwater collection system comes fully equipped with every component needed for a long-lasting, low-maintenance water harvesting setup.

From the Graf Carat 1000-gallon underground cistern to the RainFlo submersible pump, floating extractor, and automatic controller, every part is engineered for durability, high performance, and environmental sustainability. Ideal for irrigation, toilet flushing, or backup water supply, this in-ground rainwater storage system transforms passive rain into an active asset.

Features and Benefits of the RainFlo 1000 Gallons Rainwater System

✓ Complete Turnkey System – Everything you need for professional-grade rainwater harvesting in one package

✓ 1000 Gallon Underground Cistern – Graf Carat tank resists collapsing even when empty

✓ Self-Cleaning Internal Filter – Graf Optimax Pro handles roof areas up to 3,750 sq. ft.

✓ High-Performance Submersible Pump – Delivers up to 24 GPM and 78 PSI for pressurized distribution

✓ Floating Intake Filter – Draws water just below the surface where it's cleanest and most oxygen-rich

✓ Automatic Pump Controller – Manages pressure and flow with built-in safety and functionality

✓ Watertight Bulkhead Fitting – Ensures secure plumbing connections from inside to out

What's Included

Graf Carat-S 1000 Gallon Underground Cistern with pedestrian manway, telescopic riser, and childproof lid
Graf Optimax Pro Internal Filter Package (includes calming inlet, overflow siphon, and fittings)
RainFlo 1.25 HP Submersible Pump (230V/60Hz, 3-stage, 24 GPM, 78 PSI)
RainFlo 230V Automatic Pump Controller
RainFlo 1.25" Floating Filter Extractor
RainFlo Pump Connection Kit with stainless steel hardware
1.25" Heavy Duty Bulkhead Fitting for outlet plumbing

Vehicle Loading Option Available

This system comes standard with a pedestrian-rated access lid for lawn, landscape, or walkable areas.

If installed in a driveway or area with vehicle traffic, upgrade to a vehicle-rated access kit that includes:

Heavy-duty telescopic dome shaft – Adjustable to match ground level
Cast iron lid – Rated for up to 2.2 tons per axle (cars, pickups, light trucks)

This ensures long-term protection of the tank system in high-traffic areas.

Can I use this water for drinking?

Not with the standard setup. However, if you need potable water, we can offer an additional filtration and disinfection system to make the rainwater safe for drinking. Let us know your needs, and we’ll guide you through the right upgrade.

Does the system include everything I need to get started?

Yes, it comes complete with the tank, pump, filter, controller, fittings, and all core components needed for a turnkey setup.

Can I use this system for indoor plumbing, like toilets or laundry?

Yes, the system is fully compatible with indoor non-potable uses like toilet flushing and laundry when installed with the proper connections.

Can I expand the system later if I need more water capacity?

Absolutely. The system is modular, so you can add additional tanks, pumps, or components in the future.

What if it doesn’t rain enough in my area?

The system is efficient even in low rainfall zones, especially with a large roof area. You can also connect a backup water supply if needed.

I’ve never used a rainwater system before. Will I know how to manage it?

Yes. Once installed, the system is largely automatic. It includes a self-cleaning filter, automatic controller, and minimal maintenance requirements.

Is this system difficult to install?

We recommend professional installation, but it comes with all core components and documentation to make the process smooth for any experienced contractor.

RainFlo 1000-IG Downloads

Download Brochure

Download Installation and Maintenance Manual

Download System Drawing

Download Specifications

Can I use this water for drinking?

Does the system include everything I need to get started?

Yes, it comes complete with the tank, pump, filter, controller, fittings, and all core components needed for a turnkey setup.

Can I use this system for indoor plumbing, like toilets or laundry?

Yes, the system is fully compatible with indoor non-potable uses like toilet flushing and laundry when installed with the proper connections.

How do I know what tank size I need for my home or garden?

A simple way to estimate the right tank size is by calculating how much rainwater your roof can collect. Multiply your roof’s surface area (in square feet) by your average annual rainfall (in inches), then multiply by 0.62, this gives you the total gallons you could collect in a year. For example, a 1,000 sq ft roof with 30 inches of rainfall can collect around 18,600 gallons annually. From there, we can help you choose the right tank size based on your water use and how much storage you want on hand, whether you're using it for irrigation, home use like toilets or laundry, or even potable water with the proper filtration upgrades.

Can I connect this to my irrigation system?

Yes, absolutely. Our complete rainwater harvesting systems are perfect for irrigation. You can easily connect the system to drip lines, sprinkler systems, or garden hoses to water lawns, landscaping, or vegetable gardens using filtered rainwater. It's an efficient and eco-friendly way to reduce your utility bills.

Can I expand the system later if I need more water capacity?

Absolutely. The system is modular, so you can add additional tanks, pumps, or components in the future.

What if it doesn’t rain enough in my area?

The system is efficient even in low rainfall zones, especially with a large roof area. You can also connect a backup water supply if needed.

I’ve never used a rainwater system before. Will I know how to manage it?

Yes. Once installed, the system is largely automatic. It includes a self-cleaning filter, automatic controller, and minimal maintenance requirements.

Is this system difficult to install?

We recommend professional installation through contractors or companies that specialize in rainwater system setups. However, the system comes with all core components and documentation to make the process smooth for any confident, skilled homeowner.

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