The other half

Who publishes a price, and who makes you ask

Updated 2026-10-28

We read 28 providers' own pages. 5 print a number; the rest below answer with a quote form. They are listed rather than dropped, because how much of a market will not publish is worth knowing before you start asking.

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Read, and publishing no price

Cost to Replace a Septic Tank in 2026 UK Guide | BookaBuilderUK.com

Read on 2026-10-27: no price on the page.

Source: Cost to Replace a Septic Tank in 2026 UK Guide | BookaBuilderUK.com

Sewage Treatment Systems - Wastewater Management - JDP - Page 2

Read on 2026-10-28: no price on the page.

Source: Sewage Treatment Systems - Wastewater Management - JDP - Page 2

Klargester BioDisc BA Sewage Treatment Plant, Fuel Tank Shop

Read on 2026-10-28: no price on the page.

Source: Klargester BioDisc BA Sewage Treatment Plant, Fuel Tank Shop

Klargester BK BioDisc Sewage Treatment Plant, Tanks Direct

Read on 2026-10-28: no price on the page.

Source: Klargester BK BioDisc Sewage Treatment Plant, Tanks Direct

Klargester BL BioDisc Sewage Treatment Plant, Tanks Direct

Read on 2026-10-28: no price on the page.

Source: Klargester BL BioDisc Sewage Treatment Plant, Tanks Direct

How much it costs to install a septic system in the UK

Read on 2026-10-28: no price on the page.

Source: How much it costs to install a septic system in the UK

How much it costs to install a septic system in the UK

Read on 2026-10-28: no price on the page.

Source: How much it costs to install a septic system in the UK

Sewage Treatment Plant Installation Costs UK, What to Charge to Install One in 2026

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Source: Sewage Treatment Plant Installation Costs UK, What to Charge to Install One in 2026

How much does the Ecoflo sewage treatment plant cost?

Read on 2026-10-28: no price on the page.

Source: How much does the Ecoflo sewage treatment plant cost?

Sewage Treatment Plant Installation Costs UK | squote

Read on 2026-10-28: no price on the page.

Source: Sewage Treatment Plant Installation Costs UK | squote

Installing a Septic Tank Costs Explained - MyBuilder

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Source: Installing a Septic Tank Costs Explained - MyBuilder

Septic Tank Installation Cost Guide (UK Prices 2026)

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Source: Septic Tank Installation Cost Guide (UK Prices 2026)

The supply and installation Sewage Treatment Plant in Itchen Stoke, Hampshire - Find a Tender

Read on 2026-10-28: no price on the page.

Source: The supply and installation Sewage Treatment Plant in Itchen Stoke, Hampshire - Find a Tender

The Installation of a New Sewage Treatment Plant at Portley Hill Depot, Littleport - Find a Tender

Read on 2026-10-28: no price on the page.

Source: The Installation of a New Sewage Treatment Plant at Portley Hill Depot, Littleport - Find a Tender

Installation of Sewage Treatment Plant System - Witcham Farm, Manea, Cambridgeshire - Find a Tender

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Source: Installation of Sewage Treatment Plant System - Witcham Farm, Manea, Cambridgeshire - Find a Tender

THE PROVISION OF SEWAGE TREATMENT PLANT, SHALFLEET PRIMARY SCHOOL, ISLE OF WIGHT - Find a Tender

Read on 2026-10-28: no price on the page.

Source: THE PROVISION OF SEWAGE TREATMENT PLANT, SHALFLEET PRIMARY SCHOOL, ISLE OF WIGHT - Find a Tender

Replacing Your Septic Tank: Costs, Rule and Options

Read on 2026-10-28: no price on the page.

Source: Replacing Your Septic Tank: Costs, Rule and Options

Marsh Sewage Treatment Plants - JDP

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Source: Marsh Sewage Treatment Plants - JDP

Clearwater BioAir 6 Gravity Sewage Treatment Plant 20 Person, Tanks Direct

Read on 2026-10-28: no price on the page.

Source: Clearwater BioAir 6 Gravity Sewage Treatment Plant 20 Person, Tanks Direct

Water Technology Engineering

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Source: Water Technology Engineering

Servicing and Maintenance for Sewage Treatment Units

Read on 2026-10-28: no price on the page.

Source: Servicing and Maintenance for Sewage Treatment Units

Sewage Treatment Calculator UK | Plant Size Estimator

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Source: Sewage Treatment Calculator UK | Plant Size Estimator

Let the Experts Take Care of your Domestic Waste Water Problems, Design Buy Build

Read on 2026-10-28: no price on the page.

Source: Let the Experts Take Care of your Domestic Waste Water Problems, Design Buy Build

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What do you need?

A sewage treatment plant to replace a septic tank A sewage treatment plant for a new build or conversion A new sewage treatment plant to replace an old one Servicing or repairs to my sewage treatment plant

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Sources

This site's own dataset, every figure quoted from its source and dated:

For 6-person, the median published figure in the UK Sewage Treatment Plant Price Index is 2,196 GBP across 3 figures from the sources' own pages (range 2,061.89 to 2,196 GBP), read 28 October 2026.

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