Drain field
The half of the system you cannot see. How the leach field treats water, how it fails and what fixing it involves.
- What is a septic drain field and how does it work? A septic drain field (leach field) spreads tank effluent into soil for treatment. Learn its parts, typical size, how long it lasts, and how to protect it.
- How a septic drain field is designed How drain field design works: perc tests, sizing by daily flow, trench vs. bed, gravel vs. chambers, pipe types, depth and setbacks. Codes vary locally.
- Signs your drain field is failing, and what to do about it Signs of drain field failure include soggy ground, sewage odor, lush grass and slow drains. Learn the causes, what you can fix, and repair vs. replacement.