Pretreatment Septic System

Does Your Sonoma County Property Need a Pre-Treatment Septic System?

September 16, 2026

If your septic system is starting to act up, or you’re building on rural ground and the county has questions about your soil, you’ve probably

An opened drain field with a newly installed septic tank inside.

Does My Septic Tank Need Pretreatment Systems? An FAQ

October 29, 2025

At L.J. Construction, we’ve been working on septic systems since 1966. Over the years, one thing has become clear: not all septic setups are created

An opened septic tank being worked on by a professional.

5 Emerging Pretreatment Septic Systems You Should Know in 2025

August 6, 2025

If you’ve got a septic system in Sonoma County, or you’re thinking about putting one in, then heads up: 2025 is bringing some seriously cool