The best news about the 2030 septic law is that Brevard County will help pay for it. If you are looking for a septic upgrade grant in Merritt Island, the program to know is Save Our Indian River Lagoon. For eligible properties, it pays up to $20,000 toward switching an old septic system to a nitrogen-reducing one, with a guaranteed minimum of $6,000. This guide explains who qualifies, how much you might get, and the steps to apply without losing your grant by starting too soon.
What is the Save Our Indian River Lagoon septic grant?
Brevard County voters approved a half-cent sales tax to clean up the Indian River Lagoon. That money funds the Save Our Indian River Lagoon program, often shortened to SOIRL or "Save Our Lagoon." One of its biggest jobs is cutting the nitrogen that flows into the lagoon from septic systems.
Part of the program is a cost-share for homeowners. If your septic system cannot practically be connected to central sewer, the county may pay part of the cost of upgrading it to an enhanced nutrient-reducing system. That is the kind of system the state now requires around the lagoon by July 1, 2030.
How much is the Brevard septic grant?
Here is how the amounts work as of late 2026:
- Maximum: up to $20,000 per eligible parcel.
- Minimum: in December 2025, county commissioners approved a guaranteed minimum of $6,000 for eligible applicants, as a one-year trial.
- Your amount: above the minimum, the grant depends on your property's estimated nitrogen load. That means how much nitrogen your current system is likely sending toward the lagoon.
Properties right on the water or close to canals, in sandy soil with a high water table, tend to have higher estimated loads. That describes a lot of Merritt Island, so many island homes may qualify for more than the minimum. The only way to know is to look up your parcel.
Before the minimum was added, some properties with low estimated loads got little or no funding. According to the county, owners who upgraded early with low or no funding may be eligible for a retroactive reimbursement. If that is you, contact Brevard County Natural Resources.
How to check your grant amount
The county has an online tool called the Save Our Indian River Lagoon Septic Mapper. You zoom in to your property, click it, and the map shows the grant amount available for that parcel. The link is on the county's septic upgrade page, listed in the sources below. If you would rather not deal with the map, your contractor can look it up during your first call.
Who is eligible?
Exact rules are set by the county and can change, but in general a property needs to meet these conditions.
- The property is in Brevard County inside the lagoon watershed and the program's project area. Merritt Island is in it.
- The home currently uses a conventional septic system.
- Connecting to central sewer is not available or not practical for that property.
- The upgrade will be to a qualifying nitrogen-reducing system installed by a licensed septic contractor.
- You apply and are approved before any septic work starts.
That last point is the one people miss. If you start digging first, you may lose the grant.
Step-by-step: how to apply for the septic upgrade grant
- Look up your parcel in the county Septic Mapper, or ask your contractor to check it.
- Get a site evaluation and quote from a licensed septic contractor. You will need to know what system is going in.
- Apply to the county through the Save Our Indian River Lagoon septic upgrade application on the county website.
- Wait for approval. Do not let anyone start work until you have approval in writing.
- Pull the permit and install. Your contractor gets the septic permit and installs the new system.
- Pass inspection. The new system is inspected and approved by the permitting office.
- Submit final paperwork so the county can release the grant.
Can the county pay the contractor directly?
Yes, in many cases. The county gives eligible owners the option of having Brevard County Natural Resources pay their licensed septic contractor directly for eligible upgrade work. That means you do not have to front the full amount and wait to be paid back.
Not every contractor accepts county payments, and some ask the homeowner for a deposit before starting. Ask about this on your first call. The contractor we connect you with will tell you up front how they handle grant payments.
What the grant does not cover
Even with the maximum grant, many homeowners pay part of the bill themselves. County staff have said the average septic upgrade in Brevard now costs more than $22,000. Here are the main reasons your share may grow.
- Your system needs a lot of fill to rise above the water table.
- Access to the backyard is tight, so equipment work takes longer.
- Driveways, fences, pavers or landscaping need to be moved and restored.
- Your home needs plumbing changes to reach the new system's location.
- Ongoing costs such as maintenance contracts and electricity for an aerobic unit. These come after the install, and the grant does not cover them.
Our septic system cost guide breaks down each of these factors.
Common grant mistakes to avoid
Most grant problems come from a handful of avoidable mistakes. Here is what trips people up.
- Starting work too soon. Even pumping out and removing the old tank can count as starting. Wait for written approval.
- Choosing a system that does not qualify. An aerobic unit must be certified for nitrogen reduction. Ask your contractor to confirm the exact model.
- Assuming the amount. Two houses on the same street can have different grant amounts because their estimated nitrogen loads differ. Look up your own parcel.
- Missing paperwork at the end. The grant is paid after the final inspection and documents are filed. Make sure your contractor knows the county's closeout steps.
- Waiting until 2029. Funding programs change from year to year, and contractor schedules fill up near deadlines.
If you are selling or buying
The grant belongs to the parcel and the application process, not to a person, so a sale in the middle of the process can complicate things. If you plan to sell soon, ask the county how a pending application is handled. If you are buying, ask the seller whether an application or approval already exists.
Who to contact
For grant questions, the county's Save Our Indian River Lagoon septic upgrade page lists the current application and a contact email for Brevard County Natural Resources. For questions about your permit, contact the septic permitting office for Brevard County. For questions about your system, your quote or the schedule, talk to the contractor. You can reach the licensed contractor we work with at (321) 321-9578.
How state funding fits in
The State of Florida also sends grant money to the lagoon counties for septic upgrades. When state funds are available, the county may split the $6,000 minimum between state money and local sales tax money. For you as a homeowner, this usually does not change much. The county handles the funding source behind the scenes. Just follow the county's application process.
Tips to protect your grant
- Apply early. The $6,000 minimum was approved as a one-year trial, and funding can change. Do not assume today's amounts will last until 2030.
- Get approval in writing before any work. Keep a copy.
- Use a licensed septic contractor who has done county-funded upgrades before and knows the paperwork.
- Keep every document: the quote, permit, inspection approval and invoices.
- Check sewer plans. If sewer is planned for your street, the county may expect you to connect instead. See septic to sewer.
Grant plus upgrade: putting it together
For most Merritt Island homeowners, the smart order is: check sewer, check your grant amount, get a site evaluation, apply, wait for approval, then install. Our nitrogen-reducing septic upgrade guide explains the system choices, and you can request a quote below to get the process moving.