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💧 Think Outside the Tap with The Flow Guide.
Here you'll find everything you need to understand, design and build smarter rainwater systems.

Flow Guide FAQs

Should rainwater collection be considered before or after landscape design?

Rainwater collection is often best considered during landscape planning.

This allows water movement, storage placement, and planting decisions to work together rather than compete.

Can rainwater systems be added gradually over time?

Yes, many homeowners start with a modest setup.

They expand or adapt the system as their understanding and needs evolve.

Do I need to decide everything upfront before starting?

No, rainwater systems often benefit from flexible planning.

You do not need to make every decision permanent on day one.

Where does rainwater usually exit a home today?

Most homes shed water through downspouts at specific points.

In many cases there is little intentional management beyond surface discharge.

Can rainwater be redirected without permanently altering the house?

In many situations water can be rerouted or intercepted with reversible measures.

This avoids permanent structural changes to the house.

Does slope or low points on the property matter?

Yes, natural low points and gentle slopes are critical.

They influence where water naturally wants to move and collect.

Is a tank the solution to rainwater collection?

A tank helps store water, but it is only one part of the system.

Storage alone does not solve how water is captured, distributed, or used.

Are small tanks useful?

Small tanks can be useful as learning tools or for limited goals.

On their own they rarely provide a year‑round water supply.

Is it realistic to rely on stored rainwater all year?

Storage capacity is limited and rainfall is seasonal.

Many homeowners plan for partial or seasonal use instead of full‑year reliance.

What is rainwater most commonly used for?

For most homes, irrigation is the primary use.

Other uses are often optional or aspirational.

Can rainwater be used for pools or hot tubs?

It may be possible in some situations.

However, many homeowners deprioritize this after understanding water demand and timing.

Does rainwater work at high pressure like city water?

Rainwater systems typically operate at lower pressure than city water.

They are not designed to behave like municipal systems at every outlet.

Is rainwater harvesting more about savings or long‑term planning?

Many homeowners value rainwater systems for flexibility and resilience.

Long‑term adaptability often matters more than immediate financial payback.

Do rainwater systems have to be permanent or visible?

Systems do not have to be permanent or visually dominant.

Placement and visibility can be balanced with daily use of the space.

Why do homeowners sometimes change their goals during planning?

As people see how rainwater actually behaves on their property, their priorities often shift.

The focus moves from “how much water” to “how and when the water is used.”

Think Outside the Tap

Product Water provides rainwater harvesting and management solutions in Seattle, helping homes and projects use rainwater as a reliable supplemental water source. We specialize in capturing, storing, and managing rainwater to support water resilience, irrigation, and long-term sustainability.

Who We Are

Product Water is a Seattle-based rainwater systems company focused on sustainable water infrastructure for residential and small commercial sites. Our team brings engineering expertise and field experience to help clients better understand how water moves through their property—and how rainwater can be used effectively. We work with homeowners, designers, and planners seeking practical, compliant, and scalable rainwater solutions tailored to real site conditions.

What We Do

We design and support rainwater harvesting systems, including capture, storage, and pressure-based distribution for irrigation and site use. Our systems are modular and flexible, allowing projects to scale as needs change. By focusing on water demand, timing, and use—rather than tank size alone—we help clients achieve reliable performance and long-term value from their rainwater systems.

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Recent Rainwater Harvesting projects-grid | Product Water

Recent Rainwater Harvesting Projects

Discover how Seattle-area homeowners are saving water and money by thinking outside the tap. Explore our latest installations and see real-world results from advanced rainwater harvesting—no vertical downspouts required.

Steady Streams: Elevated rainwater harvesting tank for garden supply
Water Reimagined--Resourceful by Design.
See Case Study
Flexible rainwater harvesting in a narrow urban space
Adaptable Systems: Solutions for Any Space
See Details
Sizing rainwater tanks for maximum cost savings
Size Matters—Calculating Your Perfect Fit
See Details
Rainwater system satisfaction—every drop counts
Think Outside the Tap: 100% Satisfaction
See Details

Our Partners

GrowStream logo

GrowStream™ by Responsive Drip Irrigation

GrowStream™ delivers water and nutrients directly to plant roots—only when they need it. Using plant-responsive technology and ultra-low pressure, this system reduces water waste and boosts plant health across diverse landscapes.

Product Water Featured Tools
Recently completed rainwater harvesting system installation in Seattle featuring advanced hydraulic collection, sustainable water storage, and a custom plastic water tank for efficient residential water management

Low Maintenance Rainwater Harvesting

Our systems require minimal upkeep, making rainwater harvesting in Seattle easy and reliable

…Learn How These Don’t Overflow….

Eco-Friendly Water Management

Reduce your environmental impact with sustainable water solutions designed for the Pacific Northwest

Person standing next to a large black plastic water tank in Seattle, part of an advanced rainwater harvesting system designed for sustainable water storage and efficient rainwater collection.

From residential rainwater storage to large-scale commercial installations, we tailor systems for every need

Smiling customer standing in front of a newly installed plastic water tank in Seattle, demonstrating satisfaction with Product Water’s efficient rainwater harvesting system and sustainable water storage solution.

Engineered to perform in all Seattle weather, our hydraulic rainwater systems keep you supplied year-round

Why Choose Product Water for Rainwater Harvesting in Seattle?
Product Water leads in rainwater harvesting Seattle, offering expert hydraulic rainwater systems install and plastic water tanks Seattle residents rely on. Our durable tanks and smart systems are designed to maximize water capture efficiently while fitting within Seattle’s urban and climate challenges. We help you take full advantage of local water incentives and provide ongoing support and maintenance.
5.0
Based on 12 reviews
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Dawn Bookout
01:39 02 Aug 25
Jack is very knowledgeable about this water saving experience. He has been very helpful and so eager to help me along this journey. I highly recommend him.
Response from the owner 01:50 02 Aug 25
Thank you, Don! I really appreciate your kind words. It’s been a pleasure helping you on your water-saving journey — I’m always here if you need support along the way.
Curtis DeGasperi
17:48 31 Jul 25
It was a pleasure working with Jack from Product Water on our Rainwise water system. Jack quickly formed a vision for how to optimize our system and executed the plan quickly and efficiently. If you are interested in a rainwater collection system for your home I would definitely recommend talking with Product Water.
Response from the owner 01:29 02 Aug 25
Thank you so much for the kind words! It was a pleasure working with you, and I'm glad we could create a system that works well for your space.
Ed P
02:43 03 Jul 25
Jack was great to work with - very knowledgeable and accommodating of our plans for a rainwater collection system for our home. Recommend talking with Product Water if you are considering a similar approach.
Response from the owner 22:17 03 Jul 25
Thanks Ed. You are the award winner for "Most Prepaired Ever!"
Theresa Franklin
22:23 25 Jun 25
Jack Guthrie is amazing!!! Super fast and professional service!!!
Response from the owner 21:11 26 Jun 25
We're thrilled to hear that, your feedback means a lot to us and we're always here to help with anything you need.
Tanner Sigel
03:55 04 Jun 25
He was knowledgeable and did a great job hooking up my water tank.
Response from the owner 17:44 25 Jun 25
Easy. Safe. Thanks Tanner
Addison Josey
00:26 15 Apr 25
I had a wonderful experience working with the Product Water team. Jack was able to tailor a solution specific to my needs and financial constraints. He spent the time to educate me and ensure I was able to make adjustments on my own in the future. This means that I will be able to easily add additional capacity to my rain harvesting system in the future.

Jack has also remained available for additional questions and consultation after finishing the job which I appreciate.

I highly recommend working with Jack and to set up a water harvesting system if you are looking for establishing an environmentally conscious irrigation plan for your property.
Response from the owner 03:40 15 Apr 25
Thank you Addison. It's a pleasure collaborating with forward thinking homeowners like you, who see the future and work towards generating serious money saving installations, while adding value to their properties.
Tamara Guyton
20:40 16 Oct 24
Jack is an enthusiastic and knowledgeable proponent of rainwater harvesting. He takes the time to explain the elements of his work and make suggestions. His years of experience in this work are obvious. I’m looking forward to learning how to better use the collection system that I have and exploring the options. Thanks for your support, Jack.
Product Water has been an incredible service from the first consultation and on, through multiple follow-ups to maximize the potential of our system. As environment-conscious first-time home owners in the Pacific Northwest, the system installed and maintained by Product Water delivered on its aim. Our front yard is now watered exclusively from the water we collect, and the water diversion system vastly reduces stain on the municipal waste-water system and therefore erosion on the Duwamish river, further supporting re-habitation efforts. They also helped us navigate the Rain Wise Rebate system so the city compensated us for the majority of the project. If you are eligible for the Rain Wise program or just wanting to expand your rain water collection and usage, we highly recommend working with Project Water.
Response from the owner 01:42 16 Oct 24
Will--thanks! Our project is very satisfying, as collaborating to achieve full potential is fun. Working with homeowners who's SPU Rainwise projects are the starting point to achieve large scale water storage, followed by homeowners adding management capabilities, like low pressure drip and more capacity is the aim of Product Water. Seeing your garden and other plans take shape is an honor. Thanks Jack
J Guthrie
15:23 13 Sep 24
Product Water LLC is knowledgeable, answered all our questions thoroughly-with great explanation. We are very happy with our new Rain Wise system.
Response from the owner 19:22 27 Mar 24
Thank you for a Five Star review. Establishing a supplemental water source is a smart plan, easy to figure out and put in place. Your open minded thinking is a pleasure to work with. Product Water customers never second guess a decision establishing maximum rain water storage capacity.
Andrew Sheahan
03:29 24 Aug 24
I had a great experience working with Jack on my RainWise cistern project. After coming up with a plan we both agreed was the best option for my house, he let me know what to expect at each step of the process, which made it incredibly simple and convenient for me. I now have an effective rain management system in place, and, with the RainWise program, at a very minimal cost
Response from the owner 02:05 10 Sep 24
Andrew, with your guidance, together we solved water pouring back into your foundation (stormwater) established 1000 gallons of rain water storage (water conservation, utility reduction) and prepared you well for the future. Got a nice sized rebate too. Thanks for calling Product Water.
Joel Handran
05:31 02 Jun 24
Jack was very knowledgeable and helpful in finding the best usage of rain water for my needs. With his help, I'm saving money and doing my part to help the environment. Jack is awesome!
Response from the owner 05:05 17 Jun 24
Joey, thanks for doing your part. Great pleasure working with your family. When. stage 2 - more capacity- is ready give us a call. Thank you.
Jill Watts
02:33 16 May 24
Jack is super knowledgeable and great to work with.
Response from the owner 03:26 16 May 24
Thanks Jill! Pleasure working with your family!
Product Water LLC of Seattle.
= rain harvesting pros
- clearly took us through process, explaining how to redirect rain water for enough storage capacity to fit our needs.
-learned a lot during the process of designing and installing our rain collecting system
- very knowledgeable and friendly
Highly recommended 👌 👍
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