// AWARD WINNING#1 Wastewater & Sewage Treatment Service in UK — 2026
Founded Over 37 Years Ago

DRAIN-AGE
The Septic Tank Specialists

Expert septic tank and sewage treatment plant installation, surveys and maintenance across Dorset, Devon, Hampshire, Wiltshire and Somerset.

Drain-Age voted UK's #1 Utilities Company of 2026
Fully Insured
5★ Rated
5.0
Google Reviews
100s of 5-star reviews
Drain-Age voted UK's #1 Utilities Company of 2026
£10M Insured
Public Liability Insurance
37 Years Experience
Established Since 1989
Voted UK's #1 Utilities Company 2026
Drain-Age — Awarded by the Utilities Industry
Top Wastewater and Sewage Treatment Service in UK 2026 — Awarded to Drain-Age by Utilities Business Review
// AWARD WINNING
Top Domestic Sewage Treatment Services & Advice Company
Drain-Age voted UK's #1 Utilities Company of 2026
// TRUSTED BY

Esteemed Clients

Local Authorities
The National Trust
Dorset Wildlife Trust
Landmark Trust
RSPCA
RSPB
Land Agents & Estate Management Firms
// SERVICE MODULES

What We Fix

Drain Repairs & Installation — Drain-Age South West
Built to last. Guaranteed.

Drain Repairs & Installation

From patch lining to full excavation and replacement, Drain-Age engineers carry out structural drain repairs to British Standards across residential and commercial sites.

Patch Lining (No-Dig)
Full Pipe Lining
Excavation & Replace
New Installation
Process: Survey & Scope, then Repair Execution, then CCTV Sign-Off
Survey & Scope
Repair Execution
CCTV Sign-Off
Dorset · Devon · Hampshire · Wiltshire · SomersetGet Quote
Waste Water Management — Drain-Age South West
Compliant. Efficient. Clean.

Waste Water Management

Septic tank emptying, cesspit maintenance, pumping station servicing and grease trap management across the South East — keeping your site compliant and operational.

Septic Tank Emptying
Cesspit Maintenance
Pumping Stations
Grease Trap Service
Process: Site Assessment, then Pump & Clean, then Compliance Certificate
Site Assessment
Pump & Clean
Compliance Certificate
Dorset · Devon · Hampshire · Wiltshire · SomersetGet Quote
Septic Tank Systems — Drain-Age South West
Installed. Maintained. Compliant.

Septic Tank Systems

Full septic tank system installations, replacements and maintenance across the South West. We design and install compliant systems for rural and off-mains properties, including Bio-Disc and package treatment plants.

New Installations
System Replacements
Routine Maintenance
Environment Agency Compliance
Process: Site Survey, then Design & Install, then Compliance Sign-Off
Site Survey
Design & Install
Compliance Sign-Off
Dorset · Devon · Hampshire · Wiltshire · SomersetGet Quote
Septic Tank Surveys — Drain-Age South West
Assess. Report. Advise.

Septic Tank Surveys

Professional septic tank surveys providing a full assessment of your system's condition, performance and structure. Ideal for homeowners and property professionals who need clear, reliable insight and practical advice before making decisions.

Condition Assessment
Performance Evaluation
Structural Inspection
Written Report Available
Process: Site Inspection, then System Assessment, then Advice & Report
Site Inspection
System Assessment
Advice & Report
Dorset · Devon · Hampshire · Wiltshire · SomersetLearn More
Septic Tank Inspections — Drain-Age South West
Identify. Diagnose. Prevent.

Septic Tank Inspections

Thorough septic tank inspections carried out by experienced drainage specialists. We identify faults, blockages, structural issues and maintenance requirements to help prevent costly repairs and ensure your system is operating correctly.

Fault Identification
Blockage Detection
Structural Assessment
Maintenance Advice
Process: Full Inspection, then Fault Diagnosis, then Recommendations Issued
Full Inspection
Fault Diagnosis
Recommendations Issued
Dorset · Devon · Hampshire · Wiltshire · SomersetLearn More
Septic Tank Home Buyer Reports — Drain-Age South West
Informed. Evidenced. Confident.

Septic Tank Home Buyer Reports

Buying a property with a septic system? Our detailed septic tank home buyer reports provide written findings, photographic evidence and clear recommendations, giving you confidence and supporting informed negotiations.

Written Findings
Photographic Evidence
Clear Recommendations
Supports Negotiations
Process: Property Survey, then Full Assessment, then Detailed Report Issued
Property Survey
Full Assessment
Detailed Report Issued
Dorset · Devon · Hampshire · Wiltshire · SomersetLearn More
Cess Pools — Drain-Age South West
Emptied. Maintained. Managed.

Cess Pools

Professional cesspool emptying and maintenance across the South West. Our tanker teams service all sizes of cesspool, ensuring your property remains compliant and free from overflow or odour issues.

Cesspool Emptying
Routine Maintenance
Overflow Prevention
Compliance Checks
Process: Book Collection, then Tanker Pump-Out, then Condition Report
Book Collection
Tanker Pump-Out
Condition Report
Dorset · Devon · Hampshire · Wiltshire · SomersetGet Quote
Commercial Septic Tanks — Drain-Age South West
Large-Scale. Compliant. Reliable.

Commercial Septic Tanks

Specialist commercial septic tank installation, emptying, maintenance and compliance management for businesses, hospitality, schools and large rural estates across the South West. Tailored service contracts available.

Commercial Installations
Scheduled Emptying
Service Contracts
Environment Agency Compliance
Process: Site Assessment, then Service Plan, then Ongoing Management
Site Assessment
Service Plan
Ongoing Management
Dorset · Devon · Hampshire · Wiltshire · SomersetGet Quote
Sewage Treatment Plants — Drain-Age South West
Installed. Serviced. Compliant.

Sewage Treatment Plants

Supply, installation and maintenance of sewage treatment plants for residential and commercial off-mains properties across the South West. We work with all leading manufacturers and ensure full Environment Agency compliance.

New Plant Installations
Plant Replacements
Servicing & Maintenance
Environment Agency Compliance
Process: Site Survey, then Supply & Install, then Compliance Sign-Off
Site Survey
Supply & Install
Compliance Sign-Off
Dorset · Devon · Hampshire · Wiltshire · SomersetGet Quote
Main Sewer Connections — Drain-Age South West
Connected. Certified. Compliant.

Main Sewer Connections

Professional new connections to the public sewer network for residential and commercial properties across the South West. We manage the full process from design and excavation through to Water Authority adoption and sign-off.

New Sewer Connections
Lateral Drain Installation
Water Authority Liaison
Adoption & Sign-Off
Process: Survey & Design, then Excavation & Install, then Authority Sign-Off
Survey & Design
Excavation & Install
Authority Sign-Off
Dorset · Devon · Hampshire · Wiltshire · SomersetGet Quote
// PROCESS FLOW

How It Works

01

Call or Submit

Call us or submit a quick enquiry online. We'll ask a few quick questions to understand your drainage issue.

02

Engineer Dispatched

A local South West engineer is assigned to your job. You'll get an ETA via SMS — typically under 60 minutes.

03

Problem Solved

Our engineer arrives, diagnoses the issue, and resolves it on-site. Most jobs completed in a single visit.

04

Report & Certificate

You receive a full written report and job completion certificate — perfect for insurers, landlords and surveyors.

// COVERAGE LOCUS

Areas We Cover

Expert drainage engineers serving Dorset, Devon, Hampshire, Wiltshire and Somerset. Local knowledge, rapid response.

Select County

Dorset

Full coverage across all Dorset postcodes including BH, DT and SP areas.

4.9/5.0
421+
Jobs Done
4.9
Avg Rating
Key Towns Served
BournemouthPooleDorchesterWeymouthChristchurch
Get Quote for Dorset
// COVERAGE GRID

Service Coverage Map

Live drainage engineers deployed across all five South West counties — 7am to 7pm, Monday to Friday.

// VERIFIED REVIEWS

What Customers Say

James H.
Bournemouth, Dorset

"Absolute lifesavers. Called at 11pm with a completely blocked drain, engineer arrived within 40 minutes. Professional, clean and sorted the problem straight away. Cannot recommend highly enough."

Emergency Blocked Drain2 weeks ago
Sarah M.
Exeter, Devon

"Used Drain-Age for a CCTV survey prior to buying a house. Detailed report issued within 24 hours — flagged a significant issue that saved me thousands. Brilliant service."

CCTV Drain Survey1 month ago
Robert T.
Truro, Cornwall

"Had a recurring drain collapse that two other companies couldn't fix properly. Drain-Age diagnosed it immediately via CCTV and completed a no-dig repair. Sorted for good."

Drain Repair3 weeks ago
Linda P.
Southampton, Hampshire

"Septic tank emptying done professionally and on time. The team were clean, efficient and explained the condition of the system clearly. First-class throughout."

Wastewater / Septic1 month ago
David C.
Salisbury, Wiltshire

"Called about a slow drain — they arrived same day, identified a root intrusion and had it cleared within the hour. Fixed price quoted upfront, no hidden charges."

Blocked Drain + Root Cutting2 months ago
Emma W.
Taunton, Somerset

"Absolutely first class. Needed a full drainage survey for our commercial property. Drain-Age provided a WRc-coded report that satisfied our insurer fully. Outstanding."

Commercial CCTV Survey6 weeks ago
// KNOWLEDGE BASE

Frequently Asked Questions