Southern Water overflow SWS90060
Southern Water · SWS90060
This page collects what public records say about one storm overflow: its permit, how often it spilled, and the improvements recorded for it. It is not a water test and does not say whether the water is fit to swim in. A spill count is not a finding that the overflow broke its permit: overflows may spill in heavy rain under their permits, and nothing here can tell whether a spill was allowed.
The record
| Company | Southern Water |
|---|---|
| Environment Agency id | SWS90060 |
| Name in the company's live feed | – |
| Permit reference | Not in the 2024 or 2025 returns this build holds. |
The permit reference is as the Environment Agency's annual returns give it. The EA's consents register holds the permit itself, but its licence allows internal use only, so its conditions are not published here.
Swim spots downstream
SwimSignal counts this overflow at 1 swim spot. km is along the river network, through any lake on the way. The model weight is SwimSignal's estimate of how much this overflow's spills count at that spot, not a measurement (how it is worked out).
- River Test, Chilbolton Cow Common · 14.2 km upstream · model weight 14% · every overflow there
Spills each year
No annual return in this build is filed under this id, so there are no yearly figures to show. The overflow may be in the returns under another id.
Recent spills
When this page was updated (31 Oct 2026, 20:24), the live feed's last reading for it was not current. The last spill the feed reported ended on 30 January 2026.
Each spill's start and stop times: not listed here. The Environment Agency publishes them for 2024 on, under the Open Government Licence (its start/stop files). Southern Water publishes its own files from 2017; they carry no licence, so SwimSignal does not use them.
Improvements recorded
No improvement or investigation entry for this overflow is in this build's 2024 and 2025 returns.
Not published here: Southern Water's planned dates (its Clean Rivers and Seas Plan layer), which carry no licence; Water UK's National Storm Overflows Plan, whose terms forbid reuse without written permission.
Send this record
The button opens your own email app with a short, factual draft about this overflow and a link to this page. Read it, change it as you wish, and add the address yourself: SwimSignal sends nothing and keeps no copy.
Southern Water's own contact details are on its contact page. To send the same record to your MP, find your MP on the UK Parliament website.
The draft
Storm overflow Southern Water overflow SWS90060 (SWS90060) Dear Southern Water, I am writing about your storm overflow Southern Water overflow SWS90060 (Environment Agency id SWS90060). It is upstream of River Test, Chilbolton Cow Common, where people swim. Could you tell me what is planned for this overflow, and when the work is expected to be finished? The public record I am referring to is here: https://swimsignal.co.uk/overflow/SWS90060/ Thank you.
Sources and credits
Storm overflow annual returns, including permit references and improvement and investigation activity: © Environment Agency copyright and/or database right, Open Government Licence v3.0; the figures are the water companies' own returns. PR24 Water Industry National Environment Programme: © Environment Agency copyright and/or database right 2025. All rights reserved. Published under the Open Government Licence. Spill lengths: Environment Agency storm overflow EDM start/stop data 2024 and 2025, Open Government Licence v3.0. Live status: the water companies via the National Storm Overflow Hub, CC BY 4.0. Spots, distances and model weights: SwimSignal, traced on OS Open Rivers (contains OS data © Crown copyright and database right 2026). Sources: annual returns, PR24 WINEP, start/stop data, National Storm Overflow Hub. All credits and licences.