10/16/2026
💧 What is an INRB Septic System?
An In-Ground Nitrogen-Reducing Biofilter (INRB) is an advanced septic system designed to help protect Florida's springs, rivers, and groundwater.
Instead of sending wastewater directly to the drainfield like a conventional system, an INRB uses specially designed media beneath the drainfield where naturally occurring bacteria convert nitrogen into harmless nitrogen gas before it reaches the groundwater. INRB systems are designed to achieve at least 65% nitrogen reduction.
🌿 Better for the environment.
💧 Better for Florida's water.
🏡 Built to meet enhanced nitrogen-reduction requirements in many sensitive areas.
📞 Have questions about whether an INRB is right for your property? Give Advanced Septic a call—we're here to help!