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Water Pollution Prevention Products

Sandfield Penstock Solutions supply a range of purpose designed, fail safe, compliant, cost effective water pollution prevention products to effectively contain water pollution in the event of a fire, flood or spill.

Water Pollution Prevention Products

The team at Sandfield Penstock Solutions have been at the forefront of innovation in designing, manufacturing and implementing water pollution prevention solutions for more than twenty years. Our Technical Director is cited as the inventor for most of the effective water pollution prevention products in use today including the Envirovalve Flapstopper™, ToggleBlok™, DrainBlok™ and DoorBlock™. A portable version of the Envirovalve is still mandatory equipment on all Fire Engines in the UK today.

All of the products Penstock Solutions supply have been designed and tested in the field to meet the very real water pollution challenges of our customers. We understand that most often cost and disruption is a prohibitive factor in addressing water pollution issues. For this reason the solutions that we provide are the most cost effective and least disruptive on the market, often saving our customers more than 70% of the cost of more the more traditional products provided by our competitors.

The range of water pollution products supplied by Sandfield Penstock Solutions includes:


  • Automated Water Pollution Containment Devices
  • Portable Water Pollution Containment Devices
  • Environmental Monitors and Sensors

If water pollution prevention, spill containment and CIRIA c736 compliance is currently a consideration for you please do not hesitate to call 0330 223 4372 or email us, we will be very happy to discuss our solutions with you.


Water Pollution Containment Devices

Devices that will stop the flow of pollutant materials immediately in the event of a fire, flood or spill pollution event.

Environmental Monitoring Devices

Environmental monitoring devices including Flood Monitors, Ph Monitors and Oil Interceptor Alarms. 

Portable Pollution Containment Devices

DrainBlok™ is an easy to use portable pollution containment device for sealing off a flow or duct, designed to be included in a spill kit or maintenance tool kit

“Our mission is to eliminate all pollution from industrial spills and fires by listening to our customers and supporting them to exceed their environmental expectations.”

Carl Tebbett

Managing Director , Sandfield Penstock Solutions


The Alternative to Using Penstock Valves.

There is now an alternative to using Penstock Valves for water pollution containment – the ToggleBlokTM Pollution containment device which is manufactured and installed by David Coleʼs team at Penstock Solutions.   If you are sourcing a pollution containment...

Water Pollution Prevention News – Microplastics, Illegal Waste and 100,000 Dead Fish

Water Pollution Prevention – Microplastics, illegal waste, 100,000 dead fish   The mighty River Thames isn't just mighty. It's also filthy, thanks to extraordinary amounts of micro-plastic waste. A football pitch-sized illegal waste site in Cambridgeshire is being...

10 ways to save money on water pollution prevention.

As we all prepare to get back to work we are aware that the water pollution prevention systems that you implement have to be more cost effective and less disruptive than ever. This is the first of ten posts that will demonstrate the ten ways that Penstock Solutions...

Water Pollution Prevention News Water Pollution Special – Global Drinking Water Scandals

Water Pollution Special – Global Drinking Water Scandals Living in a first-world country with plenty of sensible regulations, rules, laws and guidelines in place plus an enforcement agency to make sure they're met, you'd think our drinking water was perfectly clean...

Pollution Containment Device – Control Panel Explainer

Pollution Containment Device - Control Panel Explainer Hello welcome to another one  our toggle block pollution containment device explainer videos, this time I am providing a little bit of an oversight into how the control panel for our valves work. This control...

Appeal for PFAS to be defined as a class, industrial spills, swimmers falling ill, poor water on beaches and free trees.

Scientists appeal for PFAS chemicals to be defined as a class According to the Green Science Policy Institute, all perfluorinated and polyfluorinated substances, also called PFAS, should be treated as a single class, as well as 'avoided for non-essential uses'. The...

Automated Pollution Containment Device – Flood Alarm Activation

Automated Pollution Containment Device - Flood Alarm Activation Hello and welcome to another Sandfield Penstock Solutions video looking at our ToggleBlok system, this time we are linking the pollution containment device to a flood alarm or high level alarm. We are...

Dry rivers, Cotswold river quality concerns, UK-wide Covid-19 sewage monitoring

Dry rivers, Cotswold river quality, UK-wide Covid-19 sewage monitoring Yorkshire's rivers, reservoirs, ponds and lakes are looking worryingly empty thanks to the driest May in recorded history. Rivers in the Cotswolds get a political publicity boost that highlights...

Containment Systems for the Prevention of Pollution – Supplement to CIRIA Report C736 (2014)

CIRIA have started work on a supplement to CIRIA c736 which was launched in 2014. They are looking for feedback from industry. If you are involved in water pollution prevention, spill containment, site or drainage design and you have feedback this is your opportunity...

Back to Work, Fly Tipping, and a Spate of Huge Industrial Fires

Going back to work – Will the world be different? In early April we wrote about the things Covid-19 should be teaching us about the way we have been living. Two months down the line the most of what we were saying is mostly still relevant our optimism that the crisis...