Filtration
From Rain Barrel to Tap: How to Filter Rainwater for Drinking (Safely)
A real, staged process, pre-filter, sediment, carbon, UV, and testing. Not a shortcut.
The Runoff Blog
Everything we publish about drought, gardening, filtration, and rainwater law, every claim sourced to statutes, the EPA, and USGS.
All Guides
A real, staged process, pre-filter, sediment, carbon, UV, and testing. Not a shortcut.
The short version: no, almost everywhere. Here’s what Colorado, Utah, Nevada, Oregon, and Washington actually require.
How to size a barrel to your roof area and rainfall, and when a second barrel actually pays off.
What a first-flush diverter actually does, and why skipping one shortens the life of your filter.
State Guides
A full collection guide for every state: the law, the rainfall math, and the right setup for that climate. Pick yours.