Domestic Water System Design in Oakland
You are developing a residential or commercial project in the Oakland area. Your site requires a domestic water distribution system that meets Oakland Water Department standards, serves all buildings at adequate pressure, and delivers fire flow for fire protection. Calichi Design Group provides complete domestic water system design from initial site assessment through final plan check approval. Our engineers are licensed PEs based in Oakland with direct relationships with Oakland Water Department staff.
Why Calichi Design Group
Our Oakland office has 12 years of local experience with Oakland Water Department processes. We maintain current relationships with OWD plan check engineers, understand their specific requirements for water pressure, fire flow, and future main extensions. We deliver stamped calculations using WaterCAD and EPANET, formatted exactly as OWD expects.
What’s Included
Site reconnaissance; hydraulic demand calculations; system pressure analysis; pipe sizing for minimum 20 psi residual pressure; fire flow analysis; utility coordination; stamped CA PE drawings and calculations; plan check response.
FAQs
What is the typical design timeline?
3–4 weeks to preliminary, plus 1–2 weeks for plan check revisions. Expedited schedules available.
Does my Oakland project need fire flow analysis?
Most commercial buildings over 5,000 sf and all multi-family over 4 units require fire flow verification.