Off-mains drainage consultants and suppliers
Your trusted partner across all domestic, commercial and industrial drainage solutions.
Envirocare OM Tank Store
Shop our range of tanks delivered directly to site.
Drainage Consultancy
Regulatory compliance services, expert advice and practical support.
Installation, Service & Repair
Design, install and maintain new or existing drainage systems.
Featured Products from the Envirocare OM Store.
Engineered for larger domestic and commercial applications, the Graf OneAdvanced system provides effective wastewater treatment using a proven SBR (Sequencing Batch Reactor) process. The system is designed to be simple to operate and easy to maintain.
Available in sizes from 4,800 L to 6,500 L:
4,800 L – suitable for up to 10 persons
6,500 L – suitable for larger domestic or commercial requirements
Exceptionally Low Power Consumption: The OneAdvanced sewage treatment plant leads the market in sustainability with its remarkably low energy usage of only 0.59 kW per day. This is up to 50% less than comparable systems, making it a perfect choice for environmentally conscious homeowners looking to reduce their ecological footprint and energy bills.
High-Quality Discharge: The OneAdvanced wastewater treatment system is efficient and delivers superior discharge quality. It consistently meets and exceeds environmental and regulatory standards, ensuring homeowners’ peace of mind. The system includes modular options for enhanced nutrient neutrality, which is crucial for stringent environmental compliance.
Ultra-Quiet Operation: Designed with residential tranquillity in mind, OneAdvanced operates at a whisper-quiet 36 decibels. Its low noise output ensures it integrates seamlessly into any home without disrupting the peaceful atmosphere.
Key Features
Flush-to-Ground Lid: the Graf system’s lid is ingeniously designed to be flush with the ground, preserving your property’s aesthetic appeal and maintaining a clean, unobtrusive profile.
Integrated Sampling Chamber: This built-in feature facilitates easy and efficient monitoring of discharge quality, eliminating the need for additional installations and reducing overall maintenance costs and complexity.
Gravel Backfill: Ditching traditional concrete for gravel offers versatile installation across various ground conditions, cuts costs, and boosts environmental sustainability, saving up to £60 per cubic metre.
Maintenance Made Simple: With no moving parts or internal electrical components, maintenance is straightforward and cost-effective, managed via an external control panel and compressor.
Ideal for commercial properties, housing developments, schools and rural sites
Fully compliant with EN12566-3 and UK Building Regulations
Modular design enables future capacity upgrades
Option for Pedestrian Lid or Heavy Duty Lid - vehicle loading up to 3.5t with a maxi tank dome (DN100 connection), composite plastic telescopic lid.
The Marsh Euro:Septic tank provides basic treatment for off-mains wastewater. Its heavy-duty construction makes it suitable for installation in a variety of ground conditions.
Available in capacities from 2,800 L to 4,500 L, the Euro:Septic is CE marked to comply with Construction Product Regulations.
Tested and certified to EN12566-1 Annex B, the Euro:Septic demonstrates high hydraulic efficiency. Horizontal septic tanks up to 20,000 L are also tested and certified to EN12566-1, ensuring consistent performance across larger capacities.
Key Features
Tested to BSEN12566:1 and CE-marked to ensure compliance with latest environmental and Building Regulations requirements
Provides an outstanding 99.63% hydraulic efficiency
Unique Polylok filter improves effluent quality and prolongs drainage field life (Euro:Septic units only)
Traditional ‘onion-style’ tanks for standard installations
Heavy duty shell as standard to enable installation in all ground conditions
Integral lifting eyes for improved on-site handling
‘Keying-in’ assists anchoring into granular or concrete surround
Pedestrian cover and frame included as standard
Operating Principle
Normally the simplest and most economical means of treating wastewater from small developments, a septic tank holds sewage and allows solids to settle into sludge at the bottom of the tank. Here it is naturally broken down by a process known as anaerobic digestion, which provides settlement and some biological treatment. The effluent is not fully treated and must receive additional treatment before discharge to the water environment – the most common method being to spread the effluent to land via an underground drainage field.
The Tuffa 1400 Litre (vertical) Plastic Water Tank is a robust, corrosion-resistant water storage solution designed for a wide range of domestic, agricultural, and commercial applications. Manufactured using rotomoulded, UV-stabilised polyethylene, it delivers exceptional durability, long service life, and reliable performance in all weather conditions.
This tank has a capacity of 1,400 litres and can be interlinked with other tanks to achieve higher storage volumes.
Tuffa water tanks are engineered for versatility and longevity, making them suitable for everything from irrigation and horticulture to construction, manufacturing, and sports facilities.
Key Features
Rotomoulded polyethylene construction – seamless, tough, and corrosion-resistant
UV-stabilised and weatherproof – suitable for long-term outdoor installation
2″ BSP female bottom outlet – ideal for higher flow requirements
Screened vent – prevents debris ingress while maintaining airflow
4″ or 8″ inspection hatch / sealed manway cover – easy access for inspection and cleaning
Compatible with pumps, rainwater diverters, and additional fittings
Maintenance-free design – no corrosion or degradation over time
Manufactured from recyclable polyethylene
Suitable for domestic, agricultural, commercial, industrial, horticultural, and irrigation applications
Tough, durable, and long-lasting construction. Weatherproof and UV-resistant for outdoor use
Corrosion-resistant and hygienic
Options
Mains fed water kit consisting of ¾” ball float valve inlet and a 2” bye law 30 kit
1″ BSP female bottom outlet of no bottom outlet
Tuffa tanks can be delivered to the side of the vehicle via HIAB for an additional cost.
The Diamond DMS range of sewage treatment plants offer a simple, reliable and discreet solution for off mains properties housing 1 up to 20 people. Typical uses include domestic homes and small commercial businesses such as farm shops, B&Bs and glamping sites. The standard tank models come supplied with a weather proof kiosk and low air pressure alarm beacon and blower inside.
The patented Diamond design not only gives you high quality process, but also provides you with a discreet, efficient and cost effective solution for the longevity of the plant.
The DMS2 is suitable for properties housing 1 to 6 persons with a tank capacity of 2270 L. See other capacities here.
Key Features
Longer emptying cycles (up to 3 years desludge) - due to the highly efficient aeration process which breaks down organic matter at a reduced sludge growth rate.
No internal electrical or mechanical moving parts
Handles Seasonal Fluctuations - Efficient performance even at just 10% capacity — perfect for sites with variable occupancy or future growth in mind.
Fully tested, accredited and certified - under European Standard BS EN12566-3 2014 approval which allows a CE mark.
Meets consent standards - of 20mg/l BOD; 30mg/l SS; 20mg/l NH4 as a minimum.
Part H2 UK - of building regulations.
Designed using the British Water Code of Practice Flows and Loads - to ensure that the tank is correctly sized.
Additional published test results:* - total ‘P’ mean average removal 52%, mean concentration 3.8mg/l - total ‘N’ mean average removal 52.2%, mean concentration 25mg/l
Odourless plant
Flushest lids to the ground - creating perfect integration in to the landscape.
Compact in design - keeps the excavation to a minimum and installation simple.
Range of invert depths - for complicated sites, allowing more discharge options
Operating Principle
The wastewater flows into the main tank and enters directly into the bio-chamber. The bio-chamber is a zone where the solids circulate continuously; this is achieved by air rather than mechanical or electrical parts inside the tank.
The draft tube enables the solids to be drawn back up into the central aeration chamber and re-circulated through the treatment process.
The treated liquid then exits through the dip pipe and is discharged safely in to the environment, meeting the required consent standard.
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Compliance with regulations
Our services fully align with Environmental Agency legislation, British Water Standards and all relevant building and planning guidelines.
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Service you can trust
A family business since 1995 we’re trusted by our clients to provide expert knowledge, efficient service and value for money.
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Commitment to sustainability
Focused on providing responsible solutions that demonstrate a commitment to protecting the environment.
Our Partners
We’re proud to have longstanding relationships with the UK’s most trusted manufacturers and local companies.
News
Trusted by our customers
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Karen and Mat
“Thanks so much for your positivity and support and for making this seem super easy, it really does make the world of difference.”
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Vanessa
“I cannot thank you enough for your effort, professionalism, and friendliness in helping us get to a resolution over the septic tank. It is not often, that you come across such an excellent service where someone goes above and beyond.”
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Neville
“Thanks for giving me such a good overview of what we need to do to make our tank compliant.”