GRP Water Storage Tanks for Food & Beverage Production Facilities
Water storage systems for food factories, beverage plants, dairies, bakeries, processing sites, and hygiene-controlled production environments. Tricel Water supplies GRP water storage tanks for potable water, process water, cleaning, washdown, production support, and site welfare applications. Tanks can be configured for food and beverage facilities where water quality, hygiene, access for cleaning, and potable-water compliance evidence are central to the specification. Tricel’s sectional tank range is listed as KIWA Regulation 4(1)(a) approved and compliant with the Water Supply (Water Fittings) Regulations 1999, making it suitable for projects where potable water contact approval is required.
quick facts at a glance
Potable
Food and beverage facilities may require drinking-quality water for ingredient use, food washing, hygiene facilities, and product-contact processes.
Reg. 4(1)(a)
Tanks used with potable water should have a recognised compliance route showing suitability for contact with drinking water.
Process continuity
Stored water may support production, ingredient preparation, cleaning, washdown, and site operations.
Hygienic
Tanks must be accessible for inspection, cleaning, maintenance, and hygiene checks.
Duty separation
Potable, process, washdown, non-potable, rainwater, and fire reserve duties should be clearly separated.
Sectional GRP construction
Tricel sectional tanks use 1 m GRP panels and can be configured for restricted plant rooms or larger production sites.
01
Wate storage in production
Water storage for hygiene-critical production environments
Food and beverage facilities use water across many parts of the site: ingredient preparation, product contact processes, cleaning, washdown, staff welfare, cooling, and packaging operations. In some areas, water must be potable. In others, it may be process water, treated water, non-potable service water, or a separate fire reserve.
Because these duties are different, the tank specification should start with the intended use of the stored water. A potable water tank serving production or food-washing areas requires a different compliance route from a tank used for non-potable washdown, cooling, or fire suppression.
For potable water applications, the correct wording for Tricel sectional GRP tanks is Regulation 4(1)(a) approved, with the Kiwa certificate verifying compliance for the specified GRP sectional cold water storage cistern range.
key message
In food and beverage production, the correct tank is not only about volume. It must be specified around water duty, hygiene risk, Regulation 4(1)(a) approval, access, turnover, and production continuity.
Poor specification can lead to water quality risk where potable water is required, production interruption if storage cannot meet demand, poor access for inspection, cleaning, and disinfection, confusion between potable, process, washdown, and non-potable duties, oversized potable storage with poor turnover, inadequate tank insulation or temperature control, delays during audits if compliance evidence is incomplete, retrofit problems in restricted plant rooms or factory service areas.
02
where grp tanks are used
Where GRP tanks are used in food and beverage sites
GRP Tanks
PORTABLE WATER STORAGE
Potable water may be required for ingredient preparation, washing food, product-contact processes, staff welfare, and hygiene facilities. Materials and fittings in contact with potable water must be suitable for drinking water use.
Common specification considerations:
- Regulation 4(1)(a) approved tank specification
- Potable water contact suitability
- Screened vent and overflow
- Tank cover and contamination protection
- Access for inspection and cleaning
- Turnover rate and stagnation risk
- Insulation and temperature control
- Booster set integration
- Handover documentation for audit records
The Kiwa certificate describes the Tricel-approved range as GRP sectional cold water storage cisterns supplied with a screened vent and overflow, stainless steel bolts, and stainless steel tie bars for larger cisterns.
GRP Tanks
PROCESS WATER STORAGE
Food and beverage sites may use process water in production lines, mixing, cooling, washing, rinsing, or equipment support. Some process water applications require potable quality; others may use treated or controlled non-potable water, depending on the process and risk assessment.
Common specification considerations:
- Whether the water contacts food, ingredients, or packaging
- Required water quality and treatment
- Production shift pattern
- Peak process demand
- Pump and pressure requirements
- Temperature requirements
- Cleaning and inspection access
- Clear separation from non-potable systems
Where process water is also potable or food-contact water, the tank specification should follow the potable-water approval route, including Regulation 4(1)(a) approval.
GRP Tanks
Cleaning, washdown, and sanitation
Cleaning and washdown demand may be high during shift changes, production changeovers, or end-of-day cleaning. Tank sizing should reflect these peaks rather than average daily usage only.
Common specification considerations:
- Washdown volume and pressure
- Cleaning schedule
- Production changeover frequency
- Separation from potable production water, where required
- Drainage and plant-room layout
- Booster set and pump duty
- Hygiene procedures and access
GRP Tanks
Beverage production and bottling
Beverage plants may require high-quality water storage for blending, rinsing, bottling, cleaning, and utilities. Water storage should be assessed alongside treatment systems, process controls, and site hygiene requirements.
Common specification considerations:
- Treated water requirements
- Potable water suitability
- Flow stability for production lines
- Tank turnover
- Monitoring and sampling points
- Cleaning and inspection access
- Pump redundancy where downtime risk is high
GRP Tanks
Dairies and chilled food production
Dairies and chilled food facilities often have high cleaning demand, strict hygiene expectations, and time-sensitive production schedules.
Common specification considerations:
- Regulation 4(1)(a) approved potable water storage, where required
- Cleaning and washdown peaks
- Temperature control
- Production downtime risk
- Tank access for planned cleaning
- Separation between process, washdown, and fire reserve storage
GRP Tanks
Food factory fire reserve
Some food and beverage sites may also require dedicated fire water storage for sprinkler or fire suppression systems. Fire reserve storage should be assessed separately from potable or process water demand.
Common specification considerations:
- Fire strategy
- Insurer requirements
- BS EN 12845 or relevant sprinkler standard
- Dedicated reserve protection
- Pump duty and standby arrangements
- Separation from production water storage
03
material properties
Why GRP is suitable for food and beverage water storage
UK CNI data centre operators face mandatory compliance obligations across six regulatory instruments. Non-compliance carries penalties ranging from £5,000 fines through to £20,000 fines plus criminal prosecution, and can void fire insurance where sprinkler tank capacity or certification does not meet insurer requirements.
Regulation 4(1)(a) approved options for potable applications
Where water is used for drinking, food washing, hygiene facilities, or relevant production duties, Regulation 4(1)(a) approved GRP tanks provide a clear route for demonstrating suitability for potable water contact.
Tricel’s sectional tank page states that its sectional water tanks are KIWA Regulation 4(1)(a) approved and compliant with the Water Supply (Water Fittings) Regulations 1999.
Modular sectional format
Sectional GRP tanks can be assembled from panels inside service areas, plant rooms, or factory spaces where one-piece tanks may not fit through existing access routes. This is useful for food and beverage sites being upgraded while the facility remains operational.
Tricel’s sectional tank page describes sectional tanks using 1 m GRP panels and lists externally flanged base, internally flanged base, totally internally flanged, and internally flanged configurations.
Corrosion-resistant construction
GRP does not rust, making it suitable for production environments where moisture, washdown, humidity, and plant-room conditions may accelerate deterioration in corrosion-prone materials.
Smooth, maintainable tank design
Food and beverage environments need water storage systems that support inspection, cleaning, and maintenance. Tank configuration should allow access hatches, drainage, clearances, and safe working space for planned hygiene activity.
Potable, process, and non-potable duty options
GRP tanks can be specified for different duties, provided the correct approval, fittings, pipework, covers, overflows, and operational controls are selected for the intended use.
04
Specify by water duty
Compliance and specification framework
Relevant references include:
Regulation 4(1)(a) approval
For potable water applications, tanks and associated fittings should demonstrate suitability for contact with drinking water. Tricel’s sectional tanks are listed as KIWA Regulation 4(1)(a) approved.
Water Supply (Water Fittings) Regulations 1999
Tricel’s sectional tank page states that its sectional water tank features include compliance with these regulations.
BS EN 13280
Tricel’s one-piece tank page states that GRP tanks are manufactured to BS13280:2001 / BS EN13280 standards, and Tricel’s data-centre water tank page states that GRP tanks are manufactured to BS EN 13280.
Cold water use only
The Kiwa certificate scope states “cold water use only” for the certified GRP sectional cold water storage cisterns.
05
CAPACITY CALCULATION
Size around production demand, hygiene demand, and turnover
Correct sizing should consider:
Stored water duty: potable, process, treated, washdown, cooling, non-potable, or fire reserve, Whether water contacts food, ingredients, equipment, or packaging, daily production volume, shift pattern, peak process flow, cleaning and washdown cycles, production changeovers, mains refill rate, booster set requirements, treatment system flow rate, required storage duration, tank turnover and stagnation risk, inspection and cleaning access, site audit and documentation requirements.
Practical sizing approach
|
Application
|
Demand Pattern
|
Specification Focus
|
|---|---|---|
|
Potable production water
|
Linked to food contact, washing, ingredients, and welfare
|
Reg. 4 approval, turnover, hygiene access
|
|
Process water
|
Production-line demand, often shift-based
|
Flow stability, treatment, pump duty
|
|
Washdown water
|
Peaks during cleaning cycles and changeovers
|
Peak volume, pressure, drainage
|
|
Beverage production
|
High-quality water, line continuity
|
Treated water, monitoring, pump redundancy
|
|
Dairy and chilled food
|
High cleaning and hygiene demand
|
Potable suitability, temperature, access
|
|
Fire reserve
|
Emergency use only
|
Separate reserve, sprinkler design, pump package
|
06
Tank Configuration
Selecting the correct tank format for the production site
The main risks and specification priorities differ across hyperscale, enterprise, edge, and retrofit data centre projects. These differences should drive the written specification, the redundancy architecture, and the maintenance programme.
One-piece GRP tanks
ONE-PIECE
Profile
One-piece tanks may suit smaller food and beverage facilities where there is clear access for delivery and installation.
Advantage
Tricel states that its one-piece tanks comply with UK Water Supply Regulations 1999 and are Regulation 4(1)(a) approved.
Best suited for: Smaller production sites; staff welfare or break tank duties; compact plant rooms with direct access; simple replacement projects.
Two-part GRP Tanks
TWO-PART
Profile
Two-part tanks can support retrofit installations where access is restricted but a fully sectional tank is not required.
Best suited for: Existing food factory plant rooms; smaller potable or process water upgrades; sites with restricted doorways or service corridors.
Sectional GRP Tanks
SECTIONAL
Profile
Sectional tanks are suited to larger capacities, restricted access routes, and custom plant-room dimensions.
Advantage
Tricel’s sectional tank page states that sectional tanks are manufactured using 1 m panels and are Regulation 4(1)(a) approved.
Best suited for: Large food production facilities; beverage plants; dairies and chilled food sites; high-capacity process water storage; potable water tanks requiring Regulation 4(1)(a) approval; retrofit projects where panels must be brought in individually.
TOTALLY INTERNALLY FLANGED TANKS
TIF
Profile
TIF tanks can be useful where side access is limited and the tank must be installed close to walls or other plant.
Best suited for: Restricted production plant rooms; basement service areas; factory retrofit projects; sites where external clearance is limited.
07
By facility type
Design considerations by food and beverage segment
Food manufacturing plants
Main risks
- Potable and non-potable systems being poorly separated
- Production interruption from insufficient storage
- Poor tank access for hygiene checks
- Oversized potable storage causing poor turnover
Specification priorities
- Confirm water duties by process area
- Specify Regulation 4(1)(a) approved tanks where potable water is required
- Plan safe inspection and cleaning access
- Size around production and cleaning peaks
- Keep fire reserve separate from production water
Beverage facilities
Main risks
- Process water quality variation
- Line stoppages from insufficient water flow
- Poor integration with treatment systems
- Incomplete monitoring and sampling arrangements
Specification priorities
- Coordinate with treatment and filtration systems
- Confirm flow and pressure requirements
- Include suitable sampling and monitoring points
- Provide pump redundancy where necessary
- Maintain clear potable/process documentation
Dairies and creameries
Main risks
- High washdown demand
- Hygiene-sensitive production areas
- Downtime during cleaning or maintenance
- Temperature and stagnation issues
Specification priorities
- Size around washdown cycles
- Specify Regulation 4(1)(a) approved storage where potable water is required
- Provide safe access for inspection and cleaning
- Coordinate with cleaning and production schedules
- Review insulation and temperature control
Bakeries and confectionery sites
Main risks
- Ingredient water quality requirements
- Production peaks linked to batch cycles
- Plant-room access constraints
- Cleaning water demand after production runs
Specification priorities
- Confirm potable water requirement for ingredients
- Match tank sizing to batch and cleaning cycles
- Review access route for retrofit installations
- Provide maintainable pipework and booster set access
Chilled, frozen, and prepared food facilities
Main risks
- Hygiene audit pressure
- High cleaning frequency
- Production disruption
- Potable water storage not aligned with actual use
Specification priorities
- Maintain audit-ready compliance evidence
- Provide inspection and cleaning access
- Separate water duties clearly
- Avoid unnecessary stored volume
- Plan maintenance around production windows
08
Implementation
Installation and maintenance access
Tank access matters in food production because inspection, cleaning, sampling, maintenance, and audit evidence are part of day-to-day site control. The tank should be specified around its full operating life, not only installation.
Water duty confirmed
Potable, process, treated, non-potable, washdown, or fire reserve – established for each tank before procurement
Access route
Clear opening dimensions recorded at every doorway, corridor, and access hatch between delivery point and plant room
Inspection and sampling access
Safe access to all inspection hatches, sampling points, and drain valves confirmed; confined space entry assessed
Regulation 4(1)(a) requirement
Confirmed for each potable or food-contact water tank; KIWA certificate referenced in specification documents
Foundation level
Tolerance typically ±2mm over full footprint; deviation is the leading cause of premature joint failure
Handover documentation
Compliance evidence, cleaning records, maintenance schedules, and KIWA certification retained for site audit requirements
09
Before you specify
Food and beverage tank specification checklist
Use this as a visual checklist block on the page. Before specifying a food and beverage water storage tank, confirm:
Water duty confirmed for each tank: potable, process, treated, non-potable, washdown, or fire reserve
Regulation 4(1)(a) approval confirmed for all tanks in contact with potable water
Daily production demand and peak process flow calculated
Storage duration and turnover rate confirmed to avoid stagnation in potable systems
Booster set and pump duty confirmed
Temperature and stagnation controls reviewed; insulation specified where required
Fire reserve requirement assessed separately; BS EN 12845 reviewed where sprinkler system is present
Potable or non-potable classification established for each application
Food-contact or ingredient-contact use identified and compliance route established
Cleaning and washdown demand sized around shift change and changeover peaks
Treatment and filtration system flow rate integrated into sizing
Tank access for inspection, cleaning, disinfection, and sampling confirmed
Drainage and overflow route confirmed for each tank
Handover documentation, cleaning records, and KIWA certification prepared for site audit
Common questions
Frequently Asked Questions
What water tanks are suitable for food production facilities?
GRP water storage tanks can be suitable for food production facilities where they are specified for the correct duty. Potable water applications should use materials and fittings suitable for drinking water contact, with Regulation 4(1)(a) approval where required.
What does Regulation 4(1)(a) approval mean for food and beverage water storage?
Regulation 4(1)(a) approval supports evidence that water fittings are of an appropriate quality and standard for contact with potable water. For food and beverage facilities, this matters where stored water is used for drinking water, ingredient use, food washing, hygiene facilities, or other potable applications.
Are Tricel GRP tanks Reg. 4 approved?
Yes. Tricel’s sectional tank page states that its sectional water tanks are KIWA Regulation 4(1)(a) approved, and the Kiwa certificate verifies compliance for Tricel’s GRP sectional cold water storage cistern range.
Do food factories need potable water storage?
Food factories need potable water where water is used for drinking, washing food, hygiene facilities, ingredient use, or food-contact processes. Where potable water is stored, the tank specification should reflect potable-water approval, hygiene access, turnover, and maintenance requirements.
Can GRP tanks be used for process water?
Yes. GRP tanks can be used for many process water applications, subject to water quality, temperature, treatment requirements, fittings, and site-specific process needs. Where the process water is potable or food-contact, the tank specification must reflect that requirement.
Should potable and non-potable water be stored separately?
Yes. Potable water, non-potable water, process water, rainwater, washdown water, and fire reserves should be clearly separated and labelled to avoid contamination, misuse, and operational confusion.
How should a food factory water tank be sized?
Sizing should consider production demand, shift pattern, peak process flow, cleaning and washdown cycles, mains refill rate, treatment system flow, required storage duration, and tank turnover. For potable water, oversizing should be avoided because poor turnover can increase stagnation risk.
What maintenance access should be planned?
Food and beverage tanks should allow safe access for inspection, cleaning, disinfection, sampling, maintenance, and record keeping. Access hatches, drainage, overflow routes, pipework positions, and safe working clearances should be reviewed before procurement.
RELATED TECHNICAL GUIDES
GO DEEPER ON THE TOPICS THAT MATTER
Each article and checklist in this series covers a specific aspect of cold water storage in data centres at full technical depth, with compliance references, and worked examples.
Standards & Compliance
The Golden Thread
Regulatory framework, Water Fittings Regulations, BS EN 13280, Kiwa certification, ACOP L8, and Building Safety Act golden thread documentation.
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Data Centre Water System Specification Checklist
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Regulatory Compliance Checklist for Water systems
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Daily, weekly, and periodic inspections, structural checks, sensor validation, water quality testing, and Legionella monitoring.
Technical Guide
Cold Water Tank Sizing for Multi-Storey Buildings
Demand calculations, CIBSE methodology, worked examples, and two-compartment sizing rationale.
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We supply and install sectional GRP cold water tanks across the UK — capacity from 1,000
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