Lady's Bay, Buncrana is classified as achieving a Sufficient Water Quality rating in 2025 based on the assessment of bacteriological results for the period 2022 to 2025. Lady's Bay had a Poor Water Quality rating for the years 2022 to 2024. Significant improvement works carried out by Uisce Eireann at the wastewater treatment plant in Buncrana which has improved the water quality at Lady's Bay. Annual water quality ratings are generally calculated using monitoring results over a four-year period and are assessed against stringent bacterial limits to protect bather health.

Lady's Bay beach consists of a sandy beach in Lough Swilly confined by Buncrana pier to the South and a small rocky outcrop 550m to the North. It is one of a series of beaches along the West of Inishowen. Lady's Bay beach supports a number of different plant and wildlife species. Important wildlife species include otters and Mallard, while important plant species include Lady's fern and wood sage. Lady's Bay beach is part of The Lough Swilly SAC which is of conservation importance and contains good examples of at least four habitats listed on Annex I of the EU Habitats Directive. Activities at Lady's Bay beach include swimming, boating, power boating, jet skiing and other land-based activities on the beach. The designated bathing area is approx. 0.02633 km2 and the extent along the water is approximately 550m. There is a medium gradient off Lady's Bay Beach continuing out at a medium slope before beginning to get gradually deeper until it reaches the channel.