Home » UK and EU Regulatory Frameworks for Reverse Osmosis System Use

 

UK and EU Regulatory Frameworks for Reverse Osmosis System Use

 

Introduction

UK and EU regulatory frameworks and directives exist to protect consumers and the environment from the negative health/environmental impacts of the application of reverse osmosis technology. The frameworks depend on whether the application of the RO system is for potable, waste water, food, industrial or pharmaceutical applications. Below is an overview of these framework regulations and directives.

 

UK Regulations

Water Supply (Water Fittings) Regulations 1999

In the UK, Reverse Osmosis (RO) systems must comply with the Water Supply (Water Fittings) Regulations 1999, which govern installation and require consent from the local water supplier, as well as Backflow Prevention measures to protect the public water supply.

Hazard Analysis and Critical Control Point

HACCP (Hazard Analysis and Critical Control Point) is a food safety management system that provides a systematic, preventive approach to food safety by identifying and controlling biological, chemical, and physical hazards from food production to consumption. It works by establishing critical control points (CCPs) in the food production process to monitor and prevent hazards, ensuring the final product is safe for consumers. Food businesses are legally required to have a HACCP-based food safety management system in place. Regular maintenance, filter replacement, water quality testing, and proper waste disposal are also essential for operational and regulatory compliance.

The Materials and Articles in Contact with Food (England) Regulations 2012

Food contact materials (FCM) in the UK are regulated by assimilated EU law, including the central Framework Regulation (EC) No 1935/2004, and specific national enforcement regulations for England, Scotland, Wales, and Northern Ireland. The primary goal is to ensure materials do not transfer constituents to food in a way that endangers human health or changes the food’s composition, taste, or odour in an unacceptable way.

https://www.legislation.gov.uk/uksi/2012/2619

Food Standards Agency

https://www.food.gov.uk/business-guidance/food-contact-materials-regulations

Any RO membranes on contact with food or beverages intended for human consumption must use specific polymers, adhesives and sealants that are food safe.

Water Supply Regulations

RO treated water used in food or drinks manufacturing must meet high standards if used to produce water for mixing or for cleaning equipment used to make food/drinks. the DWI – Drinking Water Inspectorate oversees the implementation of these standards.

Food Safety and Hygiene Regulations for England  2013

https://www.legislation.gov.uk/uksi/2013/2996/contents

GMP and Cleaning Standards

When RO is used to produce water  for food or pharmaceutical production, it must adhere to GMP principles.

RO systems must be kept clean and sanitised to avoid microbial growth.

Sanitising agents must be used that are safe for humans/food.

Routine maintenance and hygiene protocols must be followed.

ISO 22000 and FSSC 22000

These are international food safety standards adopted by many UK food and drinks companies.

NSF/ANSI 61

Even though it is a US standard, it is increasingly used in the UK to certify RO components for water safety.

Brine Disposal

In the UK, reverse osmosis (RO) brine disposal is regulated by the Environment Agency (EA) and falls under environmental permits and waste regulations, such as the Environmental Permitting (England and Wales) Regulations. Disposal methods depend on the brine’s characteristics, with common routes including discharge to the sea (requiring permits and specific conditions to prevent environmental harm), discharge to surface water or foul sewers (also requiring consents), or off-site treatment/disposal. Companies must adhere to the waste hierarchy by avoiding waste, reducing it at the source, and ensuring proper identification of disposal routes before accepting waste.

Use of Biocides

In the UK, biocide use in Reverse Osmosis (RO) systems is regulated under the GB Biocidal Products Regulation (GB BPR) for Great Britain (England, Scotland, Wales) or the EU BPR for Northern Ireland. For a biocide to be used in an RO system, its active substance must be approved, and the complete product must be authorized by the Health and Safety Executive (HSE). In addition, RO systems may need to comply with specific regulations such as food contact material and drinking water standards, depending on their application.

Electro-Mechanical Safety

Electrical safety standards, such as the Electricity at Work Regulations, apply to the power supply to RO systems, while mechanical aspects fall under the Pressure Systems Safety Regulations (PSSR), which covers high-pressure components like pumps and pipes.

 

DWI

Any RO membrane/housing/component used in the UK for production of potable water must have DWI approval. The DWI is the Drinking Water Inspectorate.

 

EU Regulations

EU regulations for industrial reverse osmosis (RO) systems focus on ensuring the safety and quality of the treated water through the CE marking, the EU Drinking Water Directive, and the RoHS Directive. Manufacturers must obtain CE marking for products placed on the market, signifying compliance with safety and quality standards. The Drinking Water Directive sets strict water quality standards, while the RoHS Directive restricts hazardous substances in the electronic components of the systems to protect health and the environment.

General Product Safety Regulation

EU process safety for Reverse Osmosis (RO) systems is governed by the General Product Safety Regulation (2023) and related directives, which mandate that products are safe and don’t pose health risks.

Chemical Safety

EU regulations for Reverse Osmosis (RO) chemical use focus on ensuring that any chemicals used in RO systems for drinking water are safe, food-grade, and fully removed before the water is consumed. Specific legislation like the Drinking Water Directive (EU) 2020/2184 sets standards for water quality, and the European Pharmacopoeia (Ph Eur) provides guidelines for pharmaceutical water use, requiring that materials and chemicals in contact with water meet specific purity and safety standards. For food production, manufacturers must adhere to Good Manufacturing Practices (GMP) and use cleaning agents that are safe and fully removed, with systems requiring regular monitoring, validation, and maintenance to prevent microbial growth and contamination.

 

Brine Disposal

EU regulations for Reverse Osmosis (RO) brine disposal are primarily governed by the Water Framework Directive (WFD) (2000/60/EC) and the Marine Strategy Framework Directive (2008/56/EC), which mandate environmental impact assessments, site-specific discharge conditions, and the use of mixing zones to minimize harm to ecosystems. The revised Urban Wastewater Treatment Directive (2024/2023) further strengthens protection against discharges of urban wastewater, and the EU’s Circular Economy Action Plan promotes resource recovery and brine valorization to reduce waste. There is no single, overarching brine disposal regulation; instead, compliance involves meeting various environmental objectives and developing site-specific solutions to protect water quality and marine biodiversity.

REACH

REACH regulations apply to Reverse Osmosis (RO) equipment as they are considered “articles” under the regulations, meaning companies must manage risks from any hazardous substances within them and inform users. Specific REACH regulations don’t directly target RO systems themselves, but rather the chemical substances used in their operation (like cleaning agents or membrane components) or potentially present in the equipment as an “article”. Companies manufacturing or importing RO systems must comply with UK REACH (for Great Britain) or EU REACH (for Northern Ireland and the EU), ensuring safe chemical use throughout the supply chain.

Waste Electrical and Electronic Equipment (WEEE) Directive:

This directive focuses on the proper collection, recycling, and environmentally sound treatment of electrical and electronic waste, promoting a circular economy.

 

In Conclusion:

We, who are lucky enough to live in the UK and EU, are blessed to have government agencies that regulate the safety of our food, our health, the water we drink and the environment.

 

About the Author:

 

Rami Elias Kremesti is a UK water treatment specialist with over 20 years of experience. His first love was chemistry. Later in life, he discovered philosophy and beauty. Many scientists are atheists, but some like Rami view the world through the lens of fascination or Sacred Awe because the world is too beautiful to be the result of randomness and chaos.

 

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