Verified as of 2026-09-09. We re-check these pages quarterly.

Indian River Lagoon rules for Brevard septic owners

If you own a home on septic in Brevard County, there is a good chance a rule, a deadline or a grant applies to you that nobody has explained. This is the plain-language version.

The short version

• Brevard has over 80,000 septic systems; roughly 59,400 of them send groundwater toward the Indian River Lagoon.
• By July 1, 2030, any property with a septic system inside the Indian River Lagoon Protection Program area must either connect to central sewer (if available) or upgrade to a system that cuts nitrogen by at least 65%.
• The county will pay for a large share of it. Grants run up to $20,000 for an aerobic (ATU) upgrade, and since December 2025 every property in the plan area gets a minimum $6,000 regardless of its nitrogen score.
• In the North Indian River Lagoon there is a court-ordered moratorium on new septic permits.
• Palm Bay has approved a four-year phased sewer hookup plan, with outreach starting summer 2027.

Pages in this guide

• Am I in the program area? — the first question, and how to answer it
• The 2030 deadline — what it actually requires and what happens if you do nothing
• Septic upgrade grant (up to $20,000) — eligibility, amounts, how the money flows
• Septic-to-sewer grant — when a main is at the street
• North lagoon permit moratorium — Titusville, Mims and north Merritt Island
• Palm Bay phased hookup plan — what Palm Bay residents should expect
• ATU maintenance contract rules — what you sign up for when you upgrade

Why this exists. Brevard voters approved a half-cent sales tax in 2016 to Save Our Indian River Lagoon; it has raised roughly $560 million. Septic systems near the water are the single largest controllable nitrogen source, so the money is aimed at them. It is cheaper for the county to upgrade systems gradually with grants than all at once under a mandate — which is why the grant exists now and why it may not be as generous later.

Verified as of September 9, 2026. Grant amounts, funding rounds and program boundaries change on their own schedules. Before you act on a number here, confirm it with Brevard County Natural Resources Management at (321) 633-2016 or IRLProject@BrevardFL.gov. We re-check these pages quarterly.

Need someone to walk your specific parcel through this? — we'll tell you which path applies and what it will cost after the grant.