100+
Customers in 2025
50+
Years Experience
100%
Fully Compliant
Free
No-Obligation Quotes
About Us
We Excel in Septic Tank & Drainage Solutions!
AA Drainage is a West Sussex-based drainage company specialising in septic tank installations, sewage treatment plants, and comprehensive drainage solutions. With over 50 years of experience, we bring unmatched expertise to every project.
Our Services
Comprehensive Drainage Solutions
From septic tanks to sewage treatment plants, drainage systems to percolation tests — we provide complete drainage solutions across West Sussex.
Septic Tanks
New installations, replacements, maintenance and repair — fully compliant with Environment Agency regulations.
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Sewage Systems
Sewage treatment plants and pumping stations. Modern, eco-friendly solutions.
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Drainage Systems
Land drainage, soakaways, French drains and surface water management.
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Percolation Tests
Professional percolation and soakaway tests to BS 6297 standards with Building Regs compliant reports.
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Serving West Sussex homeowners and businesses for over five decades.
Why Choose Us
Trusted Drainage Experts
With over 50 years of combined experience, we've built our reputation on honest advice, quality workmanship, and reliable service across West Sussex.
50+ Years of Expertise
Decades of drainage and septic tank experience across West Sussex.
Eco-Friendly Solutions
Modern treatment plants and sustainable drainage designs.
Fully Compliant
Environment Agency registered with Building Regulations approval.
100+ Customers in 2025
Trusted by homeowners and businesses across the region.
Customer Support
Responsive, honest advice from initial enquiry to completion.
Reliable Service
On time, on budget, with minimal disruption to your property.
How It Works
Your drainage project in 4 simple steps
1. Get in Touch
Call us or fill in a quick form. We'll arrange a free site visit at a time that suits you.
2. Site Survey
We assess your site, discuss options, and provide a detailed fixed-price quote.
3. Expert Installation
Our skilled team completes the work efficiently, safely and to the highest standards.
4. Fully Compliant
All paperwork, registrations and sign-offs handled — hassle-free.
Our Work
Recent Drainage Projects
Areas We Cover
Drainage Services Across West Sussex
Based in Bognor Regis, we provide professional drainage and septic tank services throughout West Sussex.
Testimonials
What our customers say
"AA Drainage installed our new septic tank quickly and professionally. The team were knowledgeable, tidy, and kept us informed throughout. Highly recommended."
David Mitchell
Chichester