Cleaner air, household waste and the city’s waterways. Nitrogen dioxide is one pollutant; improvement in it does not mean every environmental risk has disappeared.
Figures refer to their stated period.
−30%
Change in monitored nitrogen dioxide
Council-reported reduction across its monitoring network. Does not describe all pollutants or every location.
Southampton City Council · 2019–2024
Checked 3 October 202629.2%
Household waste reused, recycled or composted
Includes food waste. Comparisons reflect different collection systems; not all waste collected for recycling is accepted.
Southampton Data Observatory / Defra · 2024/25
Checked 3 October 2026567 kgper household
Residual household waste
Waste not sent for recycling, per household.
Southampton Data Observatory / Defra · 2024/25
Checked 3 October 202647.1
Reported fly-tipping incidents per 1,000 residents
Recording practices differ between councils; incident counts are not directly comparable measures of environmental quality.
Southampton Data Observatory / Defra · 2024/25
Checked 3 October 2026Source: Southampton Data Observatory / Defra · 2024/25
Checked 3 October 2026
Includes food waste. Comparisons reflect different collection systems; not all waste collected for recycling is accepted.
| Measure | Value | Period |
|---|---|---|
| Household waste reused, recycled or composted | 29.2% | 2024/25 |
| England household recycling rate | 42.0% | 2024/25 |
Compare definitions as well as values.
| Measure | Southampton / area | Period | Source |
|---|---|---|---|
| Change in monitored nitrogen dioxide | −30% change · Southampton | 2019–2024 | Southampton City Council |
| Household waste reused, recycled or composted | 29.2% % · Southampton | 2024/25 | Southampton Data Observatory / Defra |
| England household recycling rate | 42.0% % · England | 2024/25 | Southampton Data Observatory / Defra |
| Residual household waste | 567 kg per household · Southampton | 2024/25 | Southampton Data Observatory / Defra |
| Reported fly-tipping incidents per 1,000 residents | 47.1 incidents per 1,000 residents · Southampton | 2024/25 | Southampton Data Observatory / Defra |
4.14%
% · June 2026
Includes every mapped likelihood band, including very low. Denominator is all NRD 2023 properties in the local authority, including non-residential properties. Modelled risk with defences; not a prediction that this percentage will flood.
36
spills · 2025 · Portswood Sso
Named outfall (SWS00674), discharging to RIVER ITCHEN ESTUARY; not a city or harbour total. Spill count uses EA 12/24-hour method. Duration is monitored discharge time, not sewage volume or a real-time bathing safety result. Monitor operational for 99.91% of reporting period.
380.21 hours
hours · 2025 · Portswood Sso
Named outfall (SWS00674), discharging to RIVER ITCHEN ESTUARY; not a city or harbour total. Spill count uses EA 12/24-hour method. Duration is monitored discharge time, not sewage volume or a real-time bathing safety result. Monitor operational for 99.91% of reporting period.
99.91%
% · 2025 · Portswood Sso
Named outfall (SWS00674), discharging to RIVER ITCHEN ESTUARY; not a city or harbour total. Spill count uses EA 12/24-hour method. Duration is monitored discharge time, not sewage volume or a real-time bathing safety result. Monitor operational for 99.91% of reporting period.
18
spills · 2025 · Woolston Sso
Named outfall (SWS00969), discharging to RIVER ITCHEN ESTUARY; not a city or harbour total. Spill count uses EA 12/24-hour method. Duration is monitored discharge time, not sewage volume or a real-time bathing safety result. Monitor operational for 99.14% of reporting period.
78.07 hours
hours · 2025 · Woolston Sso
Named outfall (SWS00969), discharging to RIVER ITCHEN ESTUARY; not a city or harbour total. Spill count uses EA 12/24-hour method. Duration is monitored discharge time, not sewage volume or a real-time bathing safety result. Monitor operational for 99.14% of reporting period.