Why Collect Rainwater?
A single 1-inch rainfall on a 1,000 square foot roof produces over 600 gallons of runoff. Most of that washes pollutants into storm drains. A rain barrel intercepts that water at the downspout and stores it for garden irrigation, reducing your water bill and the load on municipal drainage systems. In areas with summer water restrictions, a well-placed barrel can keep a kitchen garden productive through dry spells without drawing from the tap.
600Gallons
Choose and Source Your Barrel
Food-grade 55-gallon polyethylene barrels are the best option.
Choose and Source Your Barrel
Food-grade 55-gallon polyethylene barrels are the best option. They are UV resistant, safe for plants, and widely available used from food manufacturers, car washes, and beverage distributors for $15 to $30. Avoid barrels that held chemicals, fuel, or
Install a Downspout Diverter
A downspout diverter kit ($15 to $25 at hardware stores) splices into your
Install a Downspout Diverter
A downspout diverter kit ($15 to $25 at hardware stores) splices into your existing downspout and routes water into your barrel when it fills below a set level. When the barrel is full, water automatically routes back down the original downspout. Mark
Add a Spigot and Overflow
Drill a hole near the bottom of the barrel for a 3/4-inch brass hose spigot.
Add a Spigot and Overflow
Drill a hole near the bottom of the barrel for a 3/4-inch brass hose spigot. Use a rubber washer and silicone sealant on both sides for a watertight fit. Elevate the barrel on cinder blocks or a sturdy wooden platform at least 30 cm off the ground to
Prevent Mosquitoes and Debris
Cover the top of the barrel with fine window screen mesh secured with a bungee
Prevent Mosquitoes and Debris
Cover the top of the barrel with fine window screen mesh secured with a bungee cord or clamp. This keeps out leaves, debris, and mosquitoes. Mosquitoes can complete a breeding cycle in standing water in as little as 7 days, so a tight screen is
Before You Turn the Diverter On
Confirm the barrel rests on a level, stable platform
Check that the spigot is fully closed before filling begins
Verify the overflow hose routes away from the house foundation
Confirm the mesh lid is fully sealed around the top
Check your local regulations since some areas restrict rainwater collection
Check Local Rules First Rainwater harvesting regulations vary widely. Most US states permit it and some even offer rebates. A small number of states have historically restricted it citing downstream water rights, though most of those laws have been updated in recent years. A quick search for your county extension office or local water authority will give you the current rules for your area.