Converting a cesspool in Kahaluʻu
If your home in Kahaluʻu still uses a cesspool, state law requires it to be upgraded, converted or connected to sewer by 2050. Many homeowners act sooner because of a home sale, a failing cesspool, or a renovation.
What to expect
- Tell us about your property using the form.
- A licensed local contractor reviews it, and usually a site and soil evaluation follows.
- An engineer designs the system and handles Department of Health approval.
- The new system is installed and the old cesspool is properly closed.
Typical costs run about $25,000 to $50,000. See cost and financing.
Sources: Hawaiʻi DOH; HPR, June 2026