Septic Tank and PTP upgrade: opportunity mapping & modelling
Buyer: NATURAL ENGLAND
- Published
- 20 June 2025
- Estimated value
- £42,000
- Place of performance
- UK
- Procedure
- Open procedure
- Lots
- 1
- Notice number
- 033922-2025
- Reference
- ocds-h6vhtk-050bea
- Official source
- Official source
CPV codes
- 90700000Environmental services
Description
Natural England are exploring the use of replacing inefficient septic tanks and package treatment plants (PTPs) with PTPs that have a higher treatment efficiency for phosphorus and nitrogen to improve water quality in up to 27 catchments. The anticipated catchments are detailed in a table in the Annex. For each catchment, we require estimates of the following: Scale of opportunity: The scale of opportunity (in units) of upgrading inefficient septic tanks and PTPs in each catchment. This will need to be mapped using GI software. Nutrient reduction: The potential nutrient reduction achieved (in kg/TP and kg/TN) for phosphorus and/or nitrogen depending on the NN catchment from replacing inefficient septic tanks and PTPs with more efficient PTPs. Cost: The cost of delivering replacement PTPs and septic tanks at-scale. In addition to the estimates above, the following deliverables are required: Methodologies: Will need to be developed based on Natural England's existing methods and in consultation with Natural England and created using national datasets. Datasets & code: Natural England will need the ability to run the model independently once the commission is complete. Any d…
Awards
| Awarded to | Amount | Date |
|---|---|---|
| Viridian Logic Ltd | — | — |
Official publications
- FTS · 033922-2025 · 20 June 2025
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Frequently asked questions
- What is the estimated value of this tender?
- The estimated value published by the buyer is £42,000.
- Who is the buyer of this tender?
- The contracting authority is NATURAL ENGLAND (United Kingdom).
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- Bids are submitted through the official public procurement portal in the United Kingdom. El Vínculo helps you find tenders and analyse their documents; submission always happens at the official source.
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