Last updated: May 3, 2026
New Systems in Coronado, CA.
New Systems for Coronado homes, done by experienced San Diego County technicians. A new septic system is a 30-year decision. We handle the full project, perc test, soil profile, system design, county DEH permit, install, inspection, and final sign-off, so you're not coordinating an engineer, a tank supplier, an excavator, and an inspector on your own.
Why is new systems different in Coastal San Diego?
Coastal new-system installs are uncommon (most coastal areas are sewered) but happen on a few unincorporated parcels in Cardiff, Leucadia, and Solana Beach. High water table drives system design, usually pressure-dosed.
What's included in new systems in Coronado?
- Site evaluation and feasibility review (gravity-fed vs. pressure-dosed vs. ATU)
- Perc test coordination with county-approved soil engineer
- System sizing per SD County DEH formula (bedrooms + soil class + slope)
- Engineered system design and county permit submittal
- Tank install, concrete or polyethylene, sized to bedroom count
- Drain field install, gravity trench, gravelless chamber, or pressure-dosed bed
- Distribution box, effluent filter, and riser install to grade
- Final county inspection coordination and permit close-out
When does a Coronado home need new systems?
- You're building a new home or ADU outside city sewer service
- Existing system has failed and is unrepairable
- You're adding bedrooms and the existing system is undersized per current code
- County violation notice requires a full system upgrade
- You inherited a non-permitted system and want to bring it to code at sale
- Property purchase is contingent on a permitted, current septic system
What do Coronado homeowners ask about new systems?
How fast can you get to Coronado for new systems?
Same-day service in Coronado on most weekdays. Morning slots book fastest, so call before 10 a.m. for the best same-day availability. After-hours emergency calls are answered by an on-call technician, not a dispatcher.
What does new systems cost in Coronado?
Standard 3-bedroom gravity system $15,000-$28,000 · pressure-dosed and ATU systems $25,000-$55,000. Pricing is the same across San Diego County, with no mileage upcharge for Coronado. We confirm a flat-rate quote before any work starts.
How does Coronado's climate affect this service?
Coronado is 100% city sewer through the City of Coronado infrastructure connected to the regional Point Loma Wastewater Treatment Plant. The island and the Silver Strand corridor have no private septic, high water table, dense build-out, and the original utility planning all preclude it. Most Coronado calls are sewer line issues, not septic.. Coastal new-system installs are uncommon (most coastal areas are sewered) but happen on a few unincorporated parcels in Cardiff, Leucadia, and Solana Beach.
How long does a full new septic install take from start to finish?
Plan for 2 to 4 months from first call to closed permit. The actual digging and installing is one week. The other 7-15 weeks are county DEH timelines: perc test scheduling, plan review, permit issuance, and final inspection. We push paper on the slow steps so you're not the one chasing the county.
What is the difference between gravity, pressure-dosed, and ATU systems?
Gravity systems are simplest, cheapest, longest-lasting, they need good soil and slope. Pressure-dosed systems use a pump to spread effluent evenly across the field, needed for marginal soils or flat sites. ATUs (Aerobic Treatment Units) treat effluent with oxygen for sites that fail standard perc, required on small lots or near sensitive water features. Cost goes up in that order.
Need new systems in Coronado?
Call for a free quote. Same-day service on most repairs, next-day on most installs.