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Our Services

Herr Designs for low energy rain water harvesting and reed bed ecological waste water treatment systems:

Reducing mains water demand and water charges

Herr Rainwater Harvesting Systems – We design and provide domestic rainwater harvesting systems for toilet flushing. Our systems are ideal for buildings or houses with no outside garden and yard space. These are most typically installed when retrofitting narrow terraces houses or for new buildings in dense urban town /city areas.

Herr Grey Water and water recycling system – Mini reed bed systems by Herr Ltd can be located in sub-urban gardens to treat grey water which can then be recycled back to the house for toilet flushing. Grey water comes only from sinks, showers and clothes washing machines. Grey water recycling, especially for toilets, will reliably reduce the mains water demand of a house by 30%.

Reed Bed Sewage Treatment

Herr Reed Bed Systems – We use reeds, flowers and willow trees to naturally treat domestic waste water, often without pumps. Our reed bed systems take up small areas in sub urban gardens and can indeed be designed to be part of a formal flower garden.

Composting and dry toilets – We can design and provide options for various modern porcelain, odourless toilets; that separate urine and compost toilet solids. Over time the system produces a small volume of well cured worm compost for the garden, as well as a lush flower garden.

Phosphorus Recycling – Our designs separates urine from toilet solids and treats them so the can be used safely for crops. The Herr system removes and recycles phosphorus and other pollutants in urine without the use of other harsh chemicals.


Alongside architects we co-design ecological water and waste water systems at the early stages of house design. We produce drawings, specifications and we supply equipment. For larger projects we will carry out some on-site work. The earlier Herr Ltd becomes involved in the project the better, ensuring that the project will achieve all of the ecological and sustainable water management goals as outlined above.

The Natural & Living Elements. The Herr waste water treatment systems minimise energy use and prioritize the use of natural plant based systems and ecology. Herr Designs include the use of Sunshine, Reed Beds, Various Flowers and Plants, Willow trees and Earth Worms. We will even use Mushrooms to break down some types of water pollution.