Rainwater Directory
Rainwater Installer Directory 1 Specialist Listed

Rainwater Harvesting Installers in Alpine, California

Leading rainwater harvesting installers in Alpine, California.

Rainwater planning estimate

Collection potential and storage target

Estimate annual roof collection separately from the storage needed to cover your chosen daily demand and reserve period.

Collection formula: roof area × annual rainfall × 0.6233 × runoff efficiency. Storage target: daily demand × reserve days. This screening estimate does not model monthly droughts, tank overflow, local roof geometry, water quality, permits, or structural requirements. Rainfall source: NOAA National Centers for Environmental Information, U.S. Monthly Climate Normals, 1971-2000; verified 2026-09-14.

Featured Installers in Alpine

Provider details are shown with their evidence status. Verify licensing, insurance, and scope directly before hiring.

Tim Guishard Enterprises

3508 Alpine Blvd, Alpine, CA 91901

Source review pending
Credentials reported by provider:

AWWA Certified General Backflow Prevention Assembly Tester, Cross Connection Control Specialist, Backflow Proctor, California State Certified Water Distribution/Treatment System Operators, State of California Licensed Pump and Machinery Contractor, Contractors License #: 536469, Contractors License Classification: C61/D21

Independent source verification pending.

Core Services

Water storage tanks Water system design Water system installation Water system maintenance Water system testing +3 more

Service Area: Alpine CA, San Diego County

Call (619) 589-9433 Visit Website
Need guidance? Read our 10-question contractor vetting checklist →
E-E-A-T Hiring Advice

4 Essential Questions to Ask Before Hiring a Rainwater Installer

Rainwater harvesting involves structural engineering, filtration, and plumbing compliance. Before signing an installation contract, ensure your contractor addresses these key items:

  • Professional Credentials: Are they ARCSA Accredited Professionals (AP) or licensed plumbers certified in backflow prevention?
  • Pre-Filtration Sizing: What micron rating and first-flush diversion volume are they designing to prevent gutter sludge from reaching storage?
  • Tank Specifications: Are storage containers opaque, UV-stabilized, and certified to NSF/ANSI 61 if utilized for indoor or potable use?
  • Permits & Rebates: Will the contractor pull required municipal plumbing permits and submit utility rebate paperwork on your behalf?
Read our complete 10-question installer hiring guide & cost breakdown →