5 Common Drainage Design Myths Debunked

martinyoung5
Apr 23
2 min read

As specialists in drainage design across London and the UK, we at The Drainage Designers frequently encounter misconceptions about drainage systems. Let's separate fact from fiction to help you make informed decisions about your project.

Myth #1: "All Drainage Solutions Are the Same"

FACT: Every site presents unique challenges requiring tailored solutions.

With our experience spanning from individual houses to large housing estates, we've learned that each project demands specific considerations based on:

Ground conditions and topography
Local authority requirements
Environmental factors
Property type and usage patterns
Foundation designs and existing infrastructure

Myth #2: "SuDS Are Only for Large Developments"

FACT: Sustainable Drainage Systems (SuDS) provide value for projects of all sizes. Our portfolio demonstrates successful implementation across various scales, incorporating:

Rain gardens for natural water filtration
Soakaways for ground infiltration
Green roofs for sustainable water management
Swales for controlled water flow These solutions help properties of all sizes meet planning requirements while protecting the environment.

Myth #3: "Drainage Design Is Just About Pipes and Water Flow"

FACT: Modern drainage design is a sophisticated process integrating multiple elements.

Using advanced tools like Causeway Flow software, we consider:

Sustainable drainage features
Environmental impact assessment
Climate change adaptation
Local authority compliance
Long-term maintenance requirements
Surface water management strategies

Myth #4: "You Don't Need Professional Drainage Design for Small Projects"

FACT: Professional design is crucial regardless of project size.

Skipping this vital step can lead to:

Planning permission delays or rejections
Non-compliance with regulations
Expensive remedial works
Flooding risks
Negative impact on neighbouring properties
Failed local authority applications

Our experience shows that professional design is an investment that prevents costly issues before they arise.

Myth #5: "Drainage Design Can Be Done Without Detailed Site Surveys"

FACT: Accurate site surveys are fundamental to effective drainage design.

Our comprehensive process requires:

Detailed topographical surveys in DWG format
Ground investigation reports
Soakaway testing data
Foundation design details and sections
Proposed levels assessment

These elements inform crucial decisions about surface water management, sustainable drainage solutions, and flood risk mitigation.

The Reality of Professional Drainage Design

Professional drainage design is a complex process requiring expertise, detailed analysis, and compliance with various regulations. At The Drainage Designers, we provide comprehensive solutions including: