On April 9, 2026, Department for Environment, Food and Rural Affairs (DEFRA) issued updated regulations governing the quality, monitoring, treatment, and labelling of spring water and natural mineral water in the United Kingdom. The regulation entered into force immediately upon publication and introduces more detailed technical and compliance requirements for operators.
1. Requirements for Spring Water
a. Water Quality Standards
Spring water must comply with strict limits across chemical, microbiological, and radiological parameters, including:
1.Chemical contaminants:
Arsenic 10 g/L
Cadmium 5 g/L
Nickel 20 g/L
Polycyclic aromatic hydrocarbons 0.1 g/L
Vinyl chloride 0.5 g/L
2.Microbiological safety:
Absence of enterococci
Absence of Pseudomonas aeruginosa
Absence of sulfite-reducing anaerobic spore-forming bacteria
Radioactive substances:
Radon 100 Bq/L
Tritium 100 Bq/L
b. Treatment Controls
Oxidation using oxygen-enriched air requires prior authorization from local authorities
Treatment residues must remain within specified limits
Any unintended disinfection effects are prohibited
Activated alumina treatment is restricted to fluoride removal only and requires approval at least three months in advance.
c. Labelling Requirements
The product must be labelled as spring water
The source of extraction must be clearly indicated
If a different geographical name is used:
The source location font must be at least 1.5 larger than the product name
If ozone-enriched air oxidation is used, it must be declared on the label.
2. Requirements for Natural Mineral Water
a. Monitoring and Testing Obligations
Operators must implement structured and periodic monitoring:
Monthly: flow rate, dry residue (mineral content), conductivity
Quarterly: anions and cations
Monthly: naturally occurring chemical substances (e.g., arsenic ? 0.010 mg/L, lead ? 0.010 mg/L, nitrate ? 50 mg/L)
Every 3 months: microbiological testing confirming absence of pathogens such as Escherichia coli, Pseudomonas aeruginosa, and enterococci
b. Permitted Processing Methods
Only specific treatments are allowed:
Filtration or decantation
Removal or addition of carbon dioxide
Oxidation using oxygen-enriched air
Activated alumina treatment
c. Labelling and Claims
Product must be labelled natural mineral water
Mandatory label information includes:
Extraction site
Mineral and chemical composition with content levels
Fluoride warning requirement:
If fluoride > 1.5 mg/L ? label must state:
Contains more than 1.5 mg/L fluoride: not suitable for regular consumption by infants and children under 7 years of age.
Optional nutrition claims permitted if criteria met, such as:
Low mineral content (? 500 mg/L total dissolved solids)
Contains calcium (e.g., calcium > 150 mg/L)
Regulatory Impact
These updated rules strengthen consumer protection, transparency, and product traceability by:
Introducing clear contaminant limits
Standardizing monitoring frequency
Tightening processing controls
Enhancing labelling clarity and risk communication, especially for sensitive groups (e.g., children and infants)
The regulation ensures alignment with modern safety expectations while maintaining the distinct regulatory identity of spring water vs. natural mineral water categories.
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