Brevard County Save Our Indian River Lagoon

11/04/2026

Algae Bloom Report for the week of October 26, 2026. The Central-North IRL (C-NIRL), Northern-Central IRL (N-CIRL), Southern-North IRL (S-NIRL), Central Banana River Lagoon (C-BRL), and Southern Banana River Lagoon (S-BRL) ended the week within low-bloom conditions. The Northern-North IRL (N-NIRL), Northern Banana River Lagoon (N-BRL), and Southern Mosquito Lagoon (SML) ended the week within mid-bloom conditions.

The estimated algae concentrations in the Indian River Lagoon (IRL) decreased in the N-CIRL, S-NIRL, and SML and increased in the N-NIRL, C-NIRL, N-BRL, C-BRL, and S-BRL.

Algal blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations of chlorophyll-A concentrations below that level and duration are not unusual in the Indian River Lagoon.

Visit https://conta.cc/4ilynjr for the detailed report.

Email from Brevard County Natural Resources Management October 26 to November 1, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date - O

10/29/2026

Check out our latest newsletter for information on septic upgrade progress, our latest completed project in Indialantic, a summary of our last Citizen Oversight Meeting, and a montage of the 143 projects completed to date that have removed over 1.3 million pounds of pollution. Read all about it at https://conta.cc/4zZkWeK

Email from Brevard County Natural Resources Management     Save Our Indian River Lagoon October News   Celebrating Over 1,000 Septic Upgrades Did you know we have over 62,000 conventional septic tanks

10/27/2026

Algae Bloom Report for the week of October 19, 2026. The Northern-North IRL (N-NIRL), Central-North IRL (C-NIRL), Northern-Central IRL (N-CIRL), Southern-North IRL (S-NIRL), Central Banana River Lagoon (C-BRL) and Southern Banana River Lagoon (S-BRL) ended the week within low-bloom conditions. The Northern Banana River Lagoon (N-BRL), and Southern Mosquito Lagoon (SML) ended the week within mid-bloom conditions.

The estimated algae concentrations in the Indian River Lagoon (IRL) decreased in the C-NIRL, N-BRL, C-BRL, and SML and increased in the N-NIRL, N-CIRL, and S-NIRL. There was no change in the S-BRL.

Algal blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations of chlorophyll-A concentrations below that level and duration are not unusual in the Indian River Lagoon. Visit https://conta.cc/4iqP8bH for the detailed report.

Email from Brevard County Natural Resources Management October 19 to October 25, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date - O

10/22/2026

We just surpassed 1,000 septic tank upgrades, converting conventional septic systems to advanced treatment unit (ATU) systems. The 1,017 upgraded septic tanks will prevent over 19,800 pounds of nitrogen pollution from entering the lagoon each year.

Brevard County has 62,000+ septic systems in the lagoon watershed. Conventional septic systems remove only 10%-40% of the algae-feeding nitrogen pollution that flows through them. Together, they contribute lagoon pollution equivalent to a 3.7-million-gallon sewage spill every day.

ATU systems can remove 65%-85% of this pollution. Each tank we upgrade or remove gets us one step closer to a cleaner lagoon. Find out if you are eligible for a septic upgrade grant of up to $20,000 by visiting our website.

10/20/2026

Check out highlights from the 142 projects the Save Our Indian River Lagoon Program has completed over the last 10 years to reduce and remove over 1.3 million pounds of pollution in the IRL and restore natural habitats, including over 40 million clams and oysters.

10/20/2026

Algae Bloom Report for the week of October 12, 2026. The Northern-North IRL (N-NIRL), Central-North IRL (C-NIRL), Northern-Central IRL (N-CIRL), Southern-North IRL (S-NIRL), and Southern Banana River Lagoon (S-BRL) ended the week within low-bloom conditions. The Northern Banana River Lagoon (N-BRL), Central Banana River Lagoon (C-BRL), and Southern Mosquito Lagoon (SML) ended the week within mid-bloom conditions.

The estimated algae concentrations in the Indian River Lagoon (IRL) decreased in the N-CIRL and S-NIRL and increased in the N-NIRL, C-NIRL, N-BRL, C-BRL, S-BRL, and SML.

Algal blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations of chlorophyll-A concentrations below that level and duration are not unusual in the Indian River Lagoon.

Visit https://conta.cc/4i7Jtaj for the detailed report.

Email from Brevard County Natural Resources Management October 12 to October 18, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date - O

10/16/2026

Save Our Indian River Lagoon Citizen Oversight Committee Meeting

10/13/2026

City of Cocoa Beach - Government reminds us that some things we may not think of as pollution can harm the lagoon. Sediment runoff is one component of muck. Make sure any home construction projects help to keep loose sediment in place.

Don't pollute...Even by Accident!
Not all pollution is intentional - especially when dirt has been disturbed. Dirt and sand can be lagoon pollutants too.

When soil is disturbed during building or renovation, rain can wash loose dirt into the street & down storm drains - and straight into the lagoon untreated.

That's where silt fencing comes in. Silt fencing is the black fabric barrier you often see around construction sites & is installed along the ground so that dirt cannot wash away during rain.

Keeping our water clean is a community effort. See something concerning? Let us know - CityofCocoaBeach.com/ConstructionConcern

10/12/2026

Algae Bloom Report for the week of October 5, 2026. The Northern-North IRL (N-NIRL) ended the week within the healthy conditions range. The Central-North IRL (C-NIRL), Central Banana River Lagoon (C-BRL), Southern Banana River Lagoon (S-BRL), Southern-North IRL (S-NIRL), and Northern-Central IRL (N-CIRL) ended the week within low-bloom conditions. The Southern Mosquito Lagoon (SML) and Northern Banana River Lagoon (N-BRL) ended the week within mid-bloom conditions.

The estimated algae concentrations in the Indian River Lagoon (IRL) decreased in the C-BRL and S-NIRL and increased in the SML, N-NIRL, C-NIRL, N-BRL, S-BRL and N-CIRL.

Algal blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations of chlorophyll-A concentrations below that level and duration are not unusual in the Indian River Lagoon.

Visit https://conta.cc/4ztcB2M for the detailed report.

Email from Brevard County Natural Resources Management October 5 to October 11, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date - Oc

10/07/2026

Great news: all algae concentrations decreased in the lagoon this week, with nearly all in the low-bloom range!

Algae Bloom Report for the week of September 28, 2026, the Northern-North IRL (N-NIRL), Central-North IRL (C-NIRL), Northern Banana River Lagoon (N-BRL), Central Banana River Lagoon (C-BRL), Southern Banana River Lagoon (S-BRL), Southern-North IRL (S-NIRL), and Northern-Central IRL (N-CIRL) ended the week within low-bloom conditions. The Southern Mosquito Lagoon (SML) ended the week within mid-bloom conditions.

Estimated algae concentrations in the Indian River Lagoon (IRL) decreased in all basins.

Algal blooms are classified as Harmful Algal Blooms when chlorophyll-A concentrations reach high-bloom conditions above 80 µg/L and are persistent for a week or more. Fluctuations of chlorophyll-A concentrations below that level and duration are not unusual in the Indian River Lagoon.

Visit https://conta.cc/3Ue5BrB for the detailed report.

Email from Brevard County Natural Resources Management September 28 to October 4, 2026 Weekly Indian River Lagoon Harmful Algal Bloom Observations in Brevard County Using Remote Sensing Report Date -