Rainwater Harvesting Services
Custom Rainwater Collection Systems
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Just one inch of rainfall collected from 1,000 square feet of roof area can provide more than 600 gallons of rainwater. Through our rainwater harvesting services, homeowners can capture and store that resource for landscape irrigation, indoor non-potable uses, and emergency water reserves.
Dig Cooperative provides rainwater tank installation service throughout the Bay Area, designing systems that help reduce reliance on municipal supplies while supporting long-term water conservation goals. From aboveground and underground water storage tanks to integrated pumping and filtration systems, we create custom rainwater collection systems tailored to each property's water needs, site conditions, and desired level of use.
Rainwater Tank Installation Services for Every Use
Our residential rainwater harvesting services are designed to help homeowners make the most of every rainfall event. Depending on your goals, a rainwater tank can provide water for landscape irrigation, indoor plumbing applications, or emergency preparedness. We also design systems that help manage excess runoff through rain gardens, earthworks, and other strategies that support groundwater recharge and stormwater control. Whether you're looking for a simple gravity-fed setup or a more advanced rainwater harvesting system, we offer solutions such as:
- Rain Tank to Irrigation — Capture and store rainwater for landscape irrigation using gravity flow or a solar-powered pump separate from municipal water supplies.
- Rain Gardens & Earthworks — Store water directly in the soil using basins, berms, and carefully selected plants that help slow runoff and support groundwater recharge.
- Storm Surge Rain Tanks — Collect excess rainfall and use gravity to irrigate gardens while helping reduce seasonal flooding concerns.
- Rain Tank to Pressurized Irrigation — Connect a water tank to a hard-wired pump and irrigation system for more controlled landscape watering.
- Rain Tank to Indoor Plumbing — Use stored rainwater for approved non-potable applications such as toilet flushing, laundry, urinals, and decorative fountains.
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Frequently Asked Questions
How much does it cost to install a rainwater collection system?
The cost of a rainwater tank installation service depends on factors such as tank size, storage capacity, site conditions, plumbing requirements, and whether pumps or advanced filtration systems are included. Larger systems and indoor plumbing connections typically require a greater investment. Dig Cooperative can provide a site-specific evaluation and estimate based on your property's water goals.
How fast will a 50 gallon rain barrel fill up?
The answer depends on rainfall intensity and roof size. Even a small roof can collect a significant amount of rainwater during a storm. Under the right conditions, a 50-gallon barrel may fill in a single rainfall event. The amount collected depends on roof area, rainfall totals, and how efficiently the harvesting system captures and directs water.
What is the average lifespan of a rainwater collection system?
A properly maintained rainwater harvesting system can last for decades. Components such as polyethylene tanks, pumps, plumbing connections, and filtration systems have varying lifespans, but quality materials and professional installation help maximize performance. Routine maintenance and occasional equipment upgrades can keep the system operating efficiently for many years.
Do rainwater harvesting systems require permits?
Many rainwater harvesting projects do not require permits when the system is under 5,000 gallons and does not include a pump. Larger systems, indoor plumbing connections, and certain site conditions may require permits and review. Dig Cooperative helps homeowners understand local code requirements and any necessary permitting before installation begins.
Can rainwater be used inside the home?
Yes. Depending on the system design and local regulations, stored rainwater can be used for non-potable indoor applications such as toilet flushing, laundry, urinals, and decorative fountains. These systems often include pumps, plumbing connections, and filtration systems designed to help maintain water quality and reliable performance.
What size rainwater tank do I need?
The right water storage tank depends on your roof area, rainfall patterns, available space, and intended water use. Some homeowners only need a small tank for garden irrigation, while others choose larger systems for indoor applications or emergency preparedness. Dig Cooperative can help determine the appropriate storage capacity for your property and goals.