Free Tools
Enter your washer type, household size, loads per week, soil type, and zones. Get exact mulch basin dimensions, daily volume, and annual savings.
Open calculatorCalculate your payback period, annual savings, and 10-year return on investment. Accounts for tiered pricing, rebates, and water rate inflation.
Open calculatorRun a 30-minute field test, enter your result, and get exact basin dimensions calibrated to your specific soil's actual absorption rate.
Open calculatorPaste your detergent's ingredient list and get an instant greywater safety rating. Flags borax, optical brighteners, high-sodium surfactants, and bleach compounds.
Check your detergentSelect your state and system type to get estimated permit fees, required steps, and typical processing timeline for all permit-required states.
Estimate my permit costFree download: permit status, gallon thresholds, code citations, and rebate availability for all 50 states on one printable reference document.
Download PDFUse these tools in order for the most efficient path from idea to installed system.