Hayling Island water quality, swimming and sewage
Figures last changed 2 November 2026. House prices for Hayling Island are on the main Hayling Island page.
- Storm overflow spills
- 9
- from three overflows within 1.5 km, 2025
- Nearest rated beach
- Excellent
- Hayling Beachlands Central, its own
- Rated C or better
- 45%
- of 6,579 homes with a certificate
- Off the gas grid
- 19%
- of homes, on their certificates
Hayling Island sewage spills
The three monitored storm overflows within 1.5 km of a Hayling Island postcode spilled 9 times in 2025, for 24 hours in all, on the water companies' returns to the Environment Agency. The busiest was Fort Cumberland Stormwater Tanks, which empties into Langstone Harbour: 9 spills and 24 hours. In 2024, the monitored overflows within 1.5 km of a Hayling Island postcode spilled 14 times, for 48 hours. The Environment Agency put much of the fall across England down to an unusually dry 2025 after a particularly wet 2024. The monitor at the Green Lane Hayling Island storm overflow worked for only 84% of 2025, so its count may be low. A storm overflow lets diluted sewage out into a river or the sea when heavy rain overloads the sewers. The counts use the Agency's method, in which the first 12 hours of a spill count as one and each 24 hours after that as another.
Source: Environment Agency storm overflow annual returns (Event Duration Monitoring) · Environment Agency: fewer and shorter storm overflow spills in 2025.
Hayling Island water quality for swimming
Hayling Island has its own designated bathing water, Hayling Beachlands Central, rated Excellent by the Environment Agency for 2025. The next nearest is Hayling Eastoke, 1.7 km away and rated Excellent. A rating covers the last four summers of samples, not any one day, and new ratings come out once a year.
How energy efficient are homes in Hayling Island?
Less efficient than the area as a whole, on their energy performance certificates. Of the 6,579 homes in Hayling Island with a certificate on the government register, 45% are rated C or better, against 53% across the Havant council area; the most common rating is D. Mains gas heats 78% of the 6,579 whose main fuel is recorded, and electricity 19%. 64 have a heat pump. Of the 6,462 whose certificate records it, only 19% have no mains gas connection; 117 certificates do not say. 3% have solar panels, and 60 have solar water heating. 30% are flats or maisonettes. A certificate is only made when a home is sold, let or built, so homes that rarely change hands are missing, and an old one shows a home as it was then. Each home's latest certificate is used: issued between 2008 and 2026, half of them since 2019.
Source: Energy Performance of Buildings Register (GOV.UK Get energy performance of buildings data).
Water and energy in nearby places
- Havant: Four monitored storm overflows within 1.5 km spilled 5 times in 2025, for 18 hours.
- Southbourne: Eight monitored storm overflows within 1.5 km spilled 63 times in 2025, for 602 hours.
- Emsworth: Five monitored storm overflows within 1.5 km spilled 39 times in 2025, for 372 hours.
- West Wittering: No monitored storm overflow lies within 1.5 km of a West Wittering postcode, on the 2025 returns.
Figures cover 472 postcodes in Hayling Island. How these figures are made.