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toxic algal blooms

File photo by Raymond Janis
By Samantha Rutt

As the local election season intensifies, Suffolk County’s wastewater infrastructure has now become the defining policy issue, with residents and environmentalists demanding immediate action to address what they consider an environmental crisis.

Water quality of Long Island’s coveted waterways is currently suffering as the county’s wastewater infrastructure deteriorates rapidly. Much of the system was built decades ago and has not been adequately upgraded to meet the demands of the growing population, critics say.

“Clean water is crucial to the health of our families, the lifeblood of our economy and central to our way of life,” said businessman Dave Calone, Democratic candidate for Suffolk County executive running against Town of Brookhaven Supervisor Ed Romaine (R). “Unfortunately, our water quality is at an all-time low, and we need to act now to protect it.”

Local officials, residents and environmentalists have voiced concerns over the issue. Adrienne Esposito, executive director of the Citizens Campaign for the Environment, said, “Suffolk County Legislators have an ethical and moral obligation to protect our drinking and coastal water resources.”

County Water Quality Restoration Act

The Suffolk County Water Quality Restoration Act, a plan to restore the county’s water quality, includes two bills that would create a fund to restore clean water by connecting homes and businesses to sewers and finance clean water septic system replacements.

“The need for an overall plan for wastewater infrastructure has been well-recognized for more than 60 years,” said Peter Scully, deputy county executive for administration.

Earlier this year, Scully had spearheaded a proposed 1/8 penny sales tax initiative to finance wastewater infrastructure. This proposal was rejected by the county Legislature in July, setting the stage for a contentious election season over this issue [See story, “Suffolk County Legislature recesses, blocks referendum on wastewater fund,” July 27, TBR News Media].

“Tragically, the Legislature doesn’t consider this a priority and has refused to let the public vote on this plan,” Esposito said. “Letting the public vote on a clean water referendum is good policy and good for democracy. It is deeply disturbing that the legislators support neither of those objectives.”

Impact on elections

The Republican vote to recess has met with fierce opposition from county Democrats, who are using the wastewater controversy to highlight differences in platforms.

“Republicans did not vote to put the referendum on the ballot,” said Keith Davies, Suffolk County Democratic Committee campaign manager. “It is clear that Republicans chose not to trust voters to make their own decisions. In our opinion, it was the wrong decision.”

Responding to these charges, county Legislator Stephanie Bontempi (R-Centerport), who is defending her 18th Legislative District seat against pediatrician Eve Meltzer-Krief (D-Centerport), indicated that her caucus is avoiding a rush to judgment.

“Rushing to pass legislation that is flawed and that will raise our taxes is simply irresponsible and not what our residents deserve,” Bontempi said. “Holding off with a referendum for a couple of months will certainly not lead to the end of Long Island, like some fearmongers like to claim.”

Many of the county’s wastewater treatment plants, pipelines and pumping stations are well past their intended lifespans, representing a growing risk for sewage leaks, overflows and contamination of local waterways and bays.

Meltzer-Krief warned that this could have devastating consequences for the region and its fragile ecosystems, including its renowned coastal areas and marine life.

“The quality of our waterways and bays here in Suffolk County is currently the poorest it has ever been,” she said. “The main cause is nitrogen runoff from outdated cesspools and septic systems which flows into our waters and triggers potentially toxic algal blooms which deprive marine life of the oxygen they need to survive.”

Research from the U.S. Environmental Protection Agency indicates that nitrogen from sewage is suffocating Long Island’s bays and harbors, contaminating drinking water and causing fish kills and algal blooms.

“Thankfully, scientists know how to reverse this troubling and urgent environmental concern and clean our waters,” Meltzer-Krief said.

But, she added, “It is the responsibility of our county legislators to follow the science and protect our children from the toxins in the water by securing funding for the recommended clean water infrastructure.”

While local officials and environmental organizations have been sounding the alarm for years over aging infrastructure, progress has been slow and funding for these projects has often fallen short of what is required.

Restoring clean, healthy water requires drastically reducing nitrogen pollution from its primary source — Suffolk County’s approximately 360,000 nitrogen-polluting cesspools and septic systems.

“Once the legislation has been amended to properly address our wastewater infrastructure, the voters will be able to decide,” Bontempi said. “The Republican majority at the Suffolk County Legislature wants clean water, too.”

Suffolk County elections will take place Tuesday, Nov. 7.

Water quality impairments across Long Island during the summer of 2021. Photo from Stony Brook University

Water, water everywhere and far too many drops were not clean.

Christopher J. Gobler, endowed chair of Coastal Ecology and Conservation Stony Brook University; Peter Scully, Deputy Suffolk County Executive; Adrienne Esposito, Citizens Campaign for the Environment; Kevin McDonald, The Nature Conservancy at a recent press conference regarding water quality. Photo from Stony Brook University

That’s the conclusion of a recent summer water quality survey of Long Island conducted by Stony Brook University Professor Christopher Gobler, who is the endowed chair of Coastal Ecology and Conservation at the School of Marine and Atmospheric Sciences.

Every estuary and bay across Long Island had either toxic algal blooms and oxygen-starved dead zones this summer.

This trend threatened marine life including fish and shellfish.

Excess nitrogen from household sewage that seeps into groundwater and into bays, harbors and estuaries or, in some cases, is discharged directly into surface waters, causes toxic algal blooms.

Double the average annual rainfall, caused by storms like Hurricanes Henri and Ida, exacerbated the dumping of nitrogen from onsite wastewater into local waterways as well, Gobler explained.

Calling this the “new normal,” Gobler said the duration of the rust tide that continues across eastern Long Island is the longest since he started monitoring water quality in 2014. Additionally, the number of dead zones is near a maximum.

For the past six years before 2021, the incidence of blue-green algal blooms was higher than any of the other 64 counties in New York State, which is likely to continue in 2021.

Blue green algae produce toxins that can be harmful to people and animals and has caused dog illnesses and deaths across the United States.

“We’re the most downstate county and warmer temperatures are a driver,” Gobler explained in an email. “Excess groundwater discharge in Suffolk means more lakes and ponds here than in Nassau.”

Heavy rains, which are expected to become the new normal amid climate change that brings wetter and slower-moving storms, flush nitrogen contaminated groundwater out into the bays.

Brown and rust tides have had a severely negative impact on habitats in the area, including seagrass, and major fisheries such as scallops and clams and the coastal wetlands that protect waterfront communities from storms.

Homeowners can reduce nitrogen runoff by fertilizing their lawns less, Gobler suggested.

Onsite systems in Suffolk County are legal, but are also “quite polluting,” Gobler explained in an email.

Gobler said Suffolk County has been more aggressive than any other county in the nation in requiring advanced septic systems.

Additionally, Gobler suggests that the best way to combat these problems is to upgrade onsite septic systems.

Nassau and Suffolk completed subwatershed studies last year that identified wastewater as the largest source of nitrogen to surface waters. Excess nitrogen stimulates toxic algal blooms which can remove oxygen from bottom waters as they decay.

The New York State Department of Environmental Conservation recommends that marine waters should not have less than three milligrams of dissolved oxygen per liter to sustain fish life. Through the summer, however, more than 20 sites across the Island fell below that threshold, which, in several cases, caused fish kills.

“The research findings are conclusive,” Carl LoBue, senior scientist for The Nature Conservancy, said in a statement. “The longer we wait to fix our water quality problems, the longer it will take and the more expensive it will be.”