Indian River Bay reopens to clamming after wastewater-related closure

Clamming and shellfish harvesting in Indian River Bay have reopened following a mandatory 21-day closure triggered by a January wastewater leak from the Town of Millsboro’s sewer system

Officials cite public-health protections; critics question economic impact lenght of closure, and infrastructure reliability

MILLSBORO, Del. — Clamming and shellfish harvesting in Indian River Bay have reopened following a mandatory 21-day closure triggered by a January wastewater leak from the Town of Millsboro’s sewer system, state environmental officials announced.

The Delaware Department of Natural Resources and Environmental Control lifted the restriction Feb. 6 after the federally required waiting period allowed waters and shellfish beds to naturally cleanse.

The closure began Jan. 15, when a leak was discovered during a camera inspection of aging sewer pipes in Millsboro. Although the discharge was contained within about 30 minutes, DNREC said rules under the National Shellfish Sanitation Program required an immediate shutdown to protect con

sumers from potential contamination in filter-feeding shellfish such as clams and mussels.

Under the national program, any release of untreated or partially treated sewage into shellfish waters automatically triggers a closure because shellfish can retain bacteria, viruses and other pathogens. The rules also establish a minimum 21-day period to allow for “natural cleansing,” and states are not permitted to shorten that timeline even if local testing or tidal conditions appear to improve more quickly.

With the reopening, access has been restored for clamming, mussel harvesting and the gathering of other bivalve shellfish in the affected portion of Indian River Bay.

State officials emphasized that nearby waters were not impacted. Rehoboth Bay — including commercial oyster aquaculture operations — remained open throughout the incident, and harvesting of crabs, conch, finfish and other non-bivalve species continued uninterrupted because those species are not subject to the same contamination risks.

DNREC said the reopening demonstrates that Delaware’s shellfish monitoring and safety system is functioning as intended while allowing recreational clammers, watermen and small aquaculture operators to return to the bay. The agency continues routine water-quality monitoring in accordance with state and federal health standards.

Debate over federal timelines and local impacts

While officials stress the closure was required to protect public health, the incident has renewed debate about whether rigid national timelines best serve local communities.

Some watermen and small harvesters say a fixed 21-day shutdown — regardless of weather, tidal flushing or real-time testing — can create unnecessary economic hardship and limit local decision-making. Others question whether more flexible, data-driven standards could better balance safety with the needs of coastal economies, particularly during winter harvesting periods.

Criticism has also focused on the underlying wastewater failure. Some residents and industry voices contend Millsboro’s aging sewer infrastructure has raised reliability concerns, prompting calls for stronger oversight, infrastructure investment or penalties when municipal systems cause environmental and economic disruption.

Environmental advocates, however, argue the federal rules exist precisely to prevent unsafe shellfish from reaching consumers and say weakening uniform health standards could increase public-health risks. They also view the spill as evidence of broader infrastructure and climate pressures that require stronger prevention measures rather than shorter closures.

Despite the debate, DNREC maintains the closure followed mandatory national safety requ