Register of Screening Opinion Requests
All Screening Opinion requests will be logged on this page, as and when they are submitted. Any official Screening Opinion is retained for 2 years, as required.
Important Notice | The Council is currently reconsidering a number of previously issued EIA Screening Opinions relating to the South West Water wastewater infrastructure proposals on St Mary's (specifically EIA-26-001, EIA-26-002 and EIA-26-003). Pending completion of that review, the relevant entries within this register are shown as "Under Consideration". Revised screening opinions will be published once the review process has concluded. (06/11/2026)
2026 (4)
Request Date: 06/11/2026
Plan or Project: THE INSTALLATION OF A BELOW GROUND RISING MAIN (SEWER) AND ANCILLARY WORKS FROM TELEGRAPH HILL TO THE SEWAGE TREATMENT WORKS AT OLD TOWN ON THE ISLAND OF ST MARY’S, ISLES OF SCILLY
Request Made By: Aardvark EM Ltd for South West Water
Response Due: 28/11/2026
Response Date:
EIA Position: PENDING
Documents:
Request Date: 07/07/2026
Plan or Project: The installation of a below ground rising main (sewer) from telegraph hill to the sewage treatment works at old town on the island of st mary’s, isles of scilly
Request Made By: Aardvark EM Ltd for South West Water
Response Due: 28/07/2026
Response Date: n/a
EIA Position: 13/10/2026 REQUEST WITHDRAWN
Documents:
- EIA Screening Opinion Request
- Proposed Routes
Request Date: 03/06/2026
Plan or Project: Proposed installation of a fine screening plant adjacent to the existing sewage treatment works in Old Town , St Mary’s, Isles of Scilly
Request Made By: Aardvark EM Ltd for South West Water
Response Due: 24/06/2026
Response Date:
EIA Position: UNDER CONSIDERATION
Documents:
- EIA Screening Opinion
- EIA Screening Opinion Checklist
- EIA Screening Opinion Request
- Proposed Site Layout Location
- Site Location Plan.pdf
Request Date: 07/05/2026
Plan or Project: Proposed Long sea outfall, St Mary’s, Isles of Scilly
Request Made By: Aardvark EM Ltd for South West Water
Response Due: 08/05/2026
Response Date:
EIA Position: UNDER CONSIDERATION
Documents:
- EIA Screening Opinion Request
- EIA Site Plan (Long Sea Outfall Marine)
- EIA Site Plan (Long Sea Outfall Terrestrial)
- EIA Site Plan (SPA)
- EIA Site Plan (Existing Infrastructure)
- EIA Site Plan (HRA Receptors)
- EIA Screening Opinion (Checklist)
- EIA Screening Opinion Letter
Request Date: 13/04/2026
Plan or Project: Installation of a BELOW GROUND RISING MAIN FROM BISHOP AND WOLF SPS TO OLD TOWN STW, St Mary’s, Isles of Scilly
Request Made By: Aardvark EM Ltd for South West Water
Response Due: 30/04/2026
Response Date:
EIA Position: UNDER CONSIDERATION
Documents:
2025 (1)
Request Date: 14-05-2025
Plan or Project: Undergrounding overhead power lines (Lower Moors, St Mary's)
Request Made By: National Grid
Response Due: 06/06/2025
Response Date: 30/06/2025
EIA Position: Not EIA Development
Documents:
2024 (2)
REF: EIA-24-002-SCR (2)
Request Date: 01/08/2024
Plan or Project: St Martins Water Distribution Pipeline:
- Installation of the Reverse Osmosis (R/O) Treatment Works including a new building and associated infrastructure at lower Town
- Seawater intake and Brine Discharge Structure at Lower Town Quay
- New Treated Water Storage Tank and Booster Station at Middle Town
- Installation of below ground 150mm connecting pipework
- A New below ground pumping station at Karma Hotel
Request Made By: Fisher German/Aardvark EM Ltd on behalf of South West Water
Response Due: 30/10/2024
Response Date: 24/07/2025
EIA Position: EIA Development
Documents:
- EIA Screening Report
- EIA Screening Request
- Natural England Response
- Historic England Response
- EIA Screening Opinion Assessment Matrix
- EIA Screening Opinion Letter
REF: EIA-24-002-SCR
Request Date: 01/08/2024
Plan or Project: St Martins Water Distribution Pipeline (Lower Town to Middle Town)
Request Made By: Fisher German on behalf of South West Water
Response Due: 30/10/2024
Response Date: 13/02/2025
EIA Position: Not EIA Development
Documents:
REF: EIA-24-001a-SCR
Request Date: 20/03/2024
Plan or Project: St Martins Distribution Pipeline (additional storage compound)
Request Made By: Fisher German on behalf of South West Water
Response Due: 10/04/2024
Response Date: 24/05/2025
EIA Position: NOT EIA Development
Documents:
REF: EIA-24-001-SCR
Request Date: 21/01/2024
Plan or Project: St Martins Distribution Pipeline Only
Request Made By: Fisher German on behalf of South West Water
Response Due: 22/01/2024
Response Date: 12/02/2024
EIA Position: NOT EIA Development
Documents:
2023
No Requests
2022
No Requests
2021 (1)
REF: EIA-21-002-SCR
Request Date: 25/05/2021
Plan or Project: Off-Island Sea Defence and Dune Management Project
Request Made By: Council of the Isles of Scilly
Response Due: 15/06/2021
Response Date: 03/08/2021
EIA Position: EIA Development
Documents:
- EIA Screening Request
- EIA Screening: Bryher; St Martin's; St Agnes
- EIA Screening Opinion
2020 (1)
Request Date: 15/12/2020
Plan or Project: Self Build Housing Development, Ennor Farm, Old Town
Request Made By: Council of the Isles of Scilly
Response Due: 05/01/2021
Response Date: 15/12/2020
EIA Position: NOT EIA Development
Documents:
2019
No Requests
2018
No Requests
2017
No Requests
2016 (2)
Request Date: 20/05/2016
Plan or Project: Tregarthen’s Hotel –EIA Screening Request Regulation 5(1) and 13(1) of the Town and Country Planning (Environmental Impact Assessment) Regulations 2011
Request Made By: Jackson Planning (on behalf of Tregarthen's Hotel)
Response Date: 09/06/2016
EIA Position: NOT EIA Development
Documents:
Request Date: 18/10/2016
Plan or Project: IoS Sea Defence and Dune Management Project
Request Made By: Council of the Isles of Scilly
Response Date: 09/12/2016
EIA Position: EIA Development
Documents:
- EIA Screening Opinion Request
- EIA Screeing Opinion Response
| Attachment | Size |
|---|---|
 EIA Screening Opinion Request.pdf | 289.52 KB |
| Proposed Site Layout Location.pdf | 385.57 KB |
| Site Location Plan.pdf | 330.83 KB |
| EIA Screening Opinion Request covering letter.pdf | 267.13 KB |
| Proposed Routes.pdf | 6.29 MB |