How To Build A Rainwater Collection System How To Build A Rainwater Collection System Enlarge Recycle your rainwater and keep your landscaping looking healthy, the eco-friendly way. Building a rainwater collection system is fast, easy and can save you money on your water bill. Step 1: You will need 1 paint strainer 1 5 gallon bucket 1 55 gallon drum w/ a lid downspout fittings 1 gutter strainer 3 cinder blocks 1 3/4" spigot w/ 1/4" turn ball valve 1 permanent black marker 1 jigsaw 1 powerdrill w/ 7/8" spade bit 1 half-round bastard file 1 utility knife 1/4" galvanized wood screws Step 2: Cut A Bucket The top of your rainwater collection system is made by cutting the top off of a five gallon bucket. With your 7/8" spade bit already attached to your power drill, put a hole in the side of the five gallon bucket to get your jigsaw rolling and cutting easily. Use your permanent marker and the top of the five gallon bucket and trace around the top of the 55 gallon drum. Just like you cut the starter hole on the five gallon bucket, use your drill with the 7/8" spade bit and put a hole in the top of the 55 gallon drum Follow the guideline around the top of the barrel. The top of the five gallon bucket should fit snug in the opening of the 55 gallon drum. Step 3: Spout It Out No one likes a leaky spout -- especially