A rain barrel is a container used to collect and store rainwater runoff, typically captured from a roof’s downspout. These systems allow homeowners to conserve water for non-potable uses, such as watering gardens and washing cars. The total investment for a functional system extends beyond the price of the barrel itself, encompassing necessary accessories and installation labor.
Base Cost by Barrel Type and Capacity
The largest factor determining the initial cost is the barrel’s material and water capacity, with prices ranging from $0.50 to $4.00 per gallon of storage. Prefabricated plastic or polyethylene barrels are the most common choice, typically holding between 50 and 80 gallons. A standard 50-to-60-gallon plastic barrel system costs $70 to $120. Larger, more decorative plastic options designed to mimic stone or wood grain can cost between $150 and $300.
Capacity directly influences the base price. A small 40-gallon barrel may cost as little as $20 for DIY materials, while a fully featured 80-gallon model can exceed $320. A highly economical approach involves repurposing a food-grade drum, which is often available for $10 to $20 for a 55-gallon container. More durable or aesthetic materials, such as used oak wine barrels (around 59 gallons), are priced higher than standard plastic options.
Necessary Accessories and Installation Costs
The price of a stand-alone barrel does not cover the complete system needed for effective rainwater harvesting. Essential accessories are required to connect the barrel to the downspout and ensure water quality. A downspout diverter kit, which channels water into the barrel and automatically redirects overflow, generally costs between $40 and $55.
Additional components are needed for a functional system:
- A spigot or valve for water retrieval.
- An overflow hose to direct excess water away from the foundation.
- A fine mesh screen to prevent debris and mosquitoes from entering the water.
A sturdy stand or base is necessary to elevate the barrel for better water pressure. Purchased stands cost $70 to $95, or less if constructed from cinder blocks. DIY installation using a repurposed drum and minimal parts can cost $20 to $50 for the necessary fittings. Homeowners preferring professional assistance can expect installation costs ranging from $180 to $435 for a simple setup, or an hourly rate of $45 to $200 for complex system work.
Strategies for Reducing Acquisition Costs
Local and municipal water conservation programs frequently offer financial incentives that can offset the initial investment. Many water districts and government agencies provide rebates for purchasing and installing rain barrels. These rebates can range from a fixed amount, such as $35 to $100 per barrel, or be calculated based on capacity, offering up to $0.50 per gallon of storage.
These programs often limit the number of barrels eligible for a rebate, typically to a maximum of two per household. Homeowners should investigate local offerings through their water utility or city website, as some regions also offer sales tax exemptions on rainwater harvesting equipment. Opting for a do-it-yourself approach, using a low-cost, repurposed food-grade drum and self-installed fittings, remains the most cost-effective path to a functional system.