In a restaurant or cafeteria, water is everywhere. It fills carafes, is used to wash certain foods, plays a role in cooking, feeds ice machines, and sometimes becomes a direct ingredient in drinks or dishes.

However, when we talk about food safety in catering, we think more spontaneously of the cold chain, surface cleaning, or food storage than of water quality.

In 2026, however, the subject deserves special attention. The sanitary control of drinking water has evolved since January to align with the European framework, notably with the integration of new parameters such as PFAS. At the same time, catering professionals remain responsible for sanitary control within their establishment, including when it comes to their internal water network.

Restaurants, hotels, cafés, school cafeterias, nursing homes, central kitchens, or corporate restaurants: what are the real obligations concerning water quality in 2026? And in what situations might additional control or treatment become relevant? FLX Water takes stock.

What water can be used in a restaurant or cafeteria?

The general principle is relatively simple: water used for food-related purposes must be water intended for human consumption.

The Public Health Code defines this as clean and wholesome water that can be used for drinking, preparing and cooking food, hygiene and cleanliness, as well as the preparation of foodstuffs intended for human consumption in food sector businesses.

Regulations therefore cover much more than just the glass of water placed on the customer's table.

In a catering establishment, this notably concerns water used for:

• drinking and carafes provided to customers;
• food preparation and cooking;
• washing dishes;
• certain washing processes involved in food preparation;
• beverage manufacturing;
• the production of food-grade ice.

Ice, in fact, deserves special attention: the Public Health Code explicitly states that anyone providing water intended for human consumption to the public must ensure that it is clean and wholesome, including when it is offered in the form of food-grade ice.

For food sector businesses, water compliance is assessed at the point where it is actually used in the establishment. For food-grade ice, the point of reference is where the ice is produced.

In other words, it is not only the quality of the water leaving the production plant or circulating in the public network that counts: the quality at the point of use in the establishment is also essential.

Who is responsible for the water quality in the establishment?

When a restaurant or cafeteria is connected to the public network, the water distributed is already subject to sanitary control.

In France, this is carried out by the Regional Health Agencies (ARS), in addition to the monitoring performed by those responsible for water production and distribution.

But responsibility does not stop at the meter.

The Public Health Code stipulates that anyone who provides water intended for human consumption to the public must ensure that it is clean and wholesome.

Regulations also provide for obligations concerning internal networks. The sanitary inspection guide for food establishments published by the Ministry of Agriculture thus reminds us that the person responsible for the internal distribution of premises or establishments where water is supplied to the public – including restaurants – must comply with the applicable sanitary requirements.

For an operator, two elements must therefore be distinguished:

1. Water supplied by the public network, the quality of which is monitored upstream.

2. What happens after the water enters the building: pipes, potential storage, equipment, faucets, fountains, ice machines, or other installations in contact with the water.

Water that is compliant upon arrival at the establishment can indeed deteriorate if the internal network is poorly designed, old, inadequately maintained, or used under poor conditions.

Internal network: why can water quality change in a restaurant?

The internal network is a sometimes underestimated point of sanitary control.

In an old establishment, certain materials can influence the composition of the water. Prolonged stagnation can also foster various problems, particularly in parts of the network that are rarely used.

This situation can occur after a long closure, during holidays, or in a seasonal establishment.

One must also take into account the equipment connected to the network: fountains, ice machines, coffee machines, dishwashers, water treatment devices, or intermediate tanks.

Lack of maintenance can turn equipment initially intended to improve or use water into an additional point of concern.

The Ministry of Agriculture explicitly includes the verification of water and corrective actions in its 2026 guide used for the sanitary inspection of food establishments.

Water quality must therefore be integrated into the general logic of the establishment's sanitary control plan, just like other factors capable of affecting food safety.

What does 2026 change for drinking water monitoring?

The year 2026 marks an important evolution in the sanitary control of water intended for human consumption in France.

Since January, the analysis program, sampling frequencies, and monitoring procedures have evolved to align with the European framework.

The list of monitored parameters now includes new contaminants, including PFAS and haloacetic acids.

Regarding PFAS, regulatory monitoring focuses in particular on a list of 20 substances. A quality limit of 0.1 µg/L for the sum of these 20 PFAS is applicable.

For a restaurant or community facility supplied by the public network, this does not mean that one must automatically order their own PFAS lab analysis. Monitoring is integrated into the sanitary control of distributed water, and the results are made public.

On the other hand, it may be relevant to consult the data available in one's territory, especially when a local issue has already been identified.

This regulatory change primarily illustrates a broader shift: water quality is not a static subject. Knowledge is advancing, new parameters are being monitored, and establishments must remain attentive to the water they use daily.

What parameters should be monitored in collective catering and the hotel/restaurant industry (CHR)?

There is no list of additional analyses to be carried out systematically in every restaurant regardless of the context.

The level of vigilance must be adapted to the origin of the water, the building, the equipment, and the usage.

Microbiological quality

Microbiological control is obviously central when water is directly or indirectly involved in food preparation.

In an establishment connected to the public network, the distributed water is controlled. But the hygiene of the internal network and equipment remains important: fountains, faucets, ice machines, or poorly maintained installations may require specific vigilance.

Lead and metals

In older buildings, the state and composition of the internal network must also be taken into account.

Certain old materials can influence tap water quality. Lead, in particular, constitutes a special case, as its presence at the point of use may be linked to the building's installations and not necessarily to the general quality of the public network.

When degraded piping is identified as the source of a problem, water treatment must not be a substitute for the necessary renovation of the network.

PFAS and pesticides

These contaminants are more linked to the quality of the resource and distributed water than to standard restaurant equipment.

Sanitary control data allows one to know the results available locally. Since 2026, regulatory monitoring of PFAS has been strengthened, which gradually improves knowledge of their presence in distributed water.

Taste and odors

Water can meet sanitary requirements while presenting organoleptic characteristics deemed unpleasant by customers or professionals.

In catering, this aspect takes on particular importance. Water is consumed directly, but it can also influence certain drinks and preparations.

However, a taste or odor issue should not automatically be equated with contamination. One must seek out the origin before choosing a potential treatment.

Hardness and limescale

Hardness constitutes a different issue altogether.

Hard water is rich in calcium and magnesium. It is not "polluted" because of this. On the other hand, it can promote the scaling of certain equipment: coffee machines, dishwashers, water heaters, or other installations using hot water.

In the CHR sector, managing limescale can therefore be important for the maintenance and lifespan of equipment, but it must not be confused with the filtration of contaminants.

Should you have your restaurant or cafeteria water analyzed?

For an establishment connected to a public network and presenting no particular anomaly, it is not necessary to multiply private analyses without a precise objective.

The results of the sanitary control of distributed water already constitute a primary source of information.

Additional checks may, however, become relevant in certain situations:

• use of a private resource or a supply other than the standard public network;
• old building or doubt concerning internal pipes;
• prolonged closure of the establishment;
• major work on the internal network;
• persistent change in taste, odor, or color;
• local results indicating a specific issue;
• suspicion of contamination linked to equipment;
• implementation of specific water treatment.

The goal is not to analyze "everything that exists," but to select the parameters corresponding to the identified risk.

This logic is important for FLX Water: before recommending a treatment solution, one must understand the origin of the water, its usage, the necessary flow rates, and the problem one wishes to treat.

Can recycled or non-potable water be used in a food establishment?

The subject has become particularly important with the need to reduce water withdrawal and develop reuse.

The answer is more nuanced than a simple yes or no.

The Public Health Code allows for the use of certain waters unfit for human consumption under strictly regulated conditions, when their quality is compatible with the usage and does not present a risk to the health or wholesomeness of the final product.

Regulations also allow food sector businesses to use, under conditions, different categories of recycled water, notably water from raw materials, recycled process water, and certain treated recycled wastewater.

Depending on their category and quality, they can be used for certain cleaning or processes, with or without contact with foodstuffs.

However, treated recycled wastewater cannot be used as an ingredient in the composition of final food products.

This reuse requires a genuine risk management approach. The various networks must, in particular, be designed in such a way as to avoid contamination and backflow toward the network intended for human consumption.

Therefore, one should never improvise a connection between water reclamation and the network supplying a professional kitchen.

What happens in the event of a sanitary inspection in a restaurant?

Control services obviously do not only look at the water.

During an inspection, agents may check the cleanliness of the premises, the maintenance of equipment, good hygiene practices, food traceability, temperatures, cleaning and disinfection procedures, or the self-checks put in place.

Water management is part of this whole.

The Ministry of Agriculture's sectoral guide includes a section devoted to the management of clean water and drinking water and a control line concerning the verification of water and corrective actions.

In practice, the professional must therefore be able to show that they manage the risks related to their activity and that they know how to react in the event of a problem.

If an anomaly concerning water is identified, the priority consists of determining its origin and taking appropriate corrective measures rather than continuing to use the water as if nothing had happened.

Water filtration in catering: in which cases is it relevant?

Regulations do not require all restaurants and cafeterias to install an additional filtration system.

The question must therefore be asked differently: what problem does one wish to solve?

Filtration can be studied when an establishment wishes to reduce certain contaminants identified in the water, improve certain organoleptic characteristics, or have controlled water quality at several points of use.

The choice of system then depends on several parameters: input water quality, targeted contaminants, daily consumption, necessary instantaneous flow rate, and building configuration.

In a central kitchen, a hotel, or a restaurant hosting several hundred people, the needs are obviously not comparable to those of an individual dwelling.

FLX Water notably has a centralized filtration solution intended for professional and commercial use, capable of treating up to 5 m³ of water per hour.

It can be considered for establishments such as hotels, restaurants, offices, school facilities, or other collective buildings when water characteristics and site needs justify it.

The principle is to treat water in a centralized manner before its distribution to various points of use, rather than multiplying small independent devices.

But this installation must always be part of a more global approach. Filtration does not correct degraded piping, does not replace equipment maintenance, and does not exempt the establishment from its hygiene obligations.

In 2026, water quality is fully part of sanitary control

The 2026 regulation did not suddenly create a general obligation to filter water in restaurants or cafeterias.

However, it confirms an important evolution: water quality must be considered as a full element of the sanitary safety of establishments.

Since January, drinking water control has been strengthened with the integration of new parameters, including PFAS. Rules concerning internal networks make establishment managers accountable. And the development of water reuse requires even more precise mastery of the separation of uses and sanitary risks.

For a professional, the right approach is therefore based on four steps: knowing the water that supplies the establishment, mastering the internal network, maintaining equipment, and treating water only when a specific need has been identified.

This is also the approach defended by FLX Water: starting from the real quality of the water and the needs of the site to determine if additional treatment is necessary and how to size it.

Frequently asked questions

Is a restaurant required to filter its water in 2026?
No. There is no general obligation requiring all restaurants to install a water filter. The establishment must, however, use water that meets sanitary requirements for the uses concerned and control the risks related to its internal network and equipment.

Can tap water be used for cooking in a restaurant?
Yes. Water intended for human consumption is precisely intended for drinking, preparing and cooking food, as well as food uses defined by regulations.

Is ice served in drinks covered by the regulation?
Yes. Food-grade ice of aqueous origin is explicitly covered by the rules relating to water intended for human consumption. Its quality must be controlled at the point where it is produced.

Should PFAS be analyzed in one's restaurant?
Not automatically when the establishment is supplied by the public network. Since January 2026, the 20 regulatory PFAS are part of the mandatory sanitary control of drinking water. Locally available results can be consulted before considering an additional analysis.

Can rainwater or recycled water be used in the kitchen?
Certain uses of water unfit for human consumption or recycled water are authorized in food businesses, but only within the regulatory framework provided for each type of water and each usage. One must never freely connect an alternative resource to the water network intended for food uses.

When can centralized filtration be a good option?
It can be considered when an establishment wishes to treat water from multiple points of use and a specific need has been identified: contaminants, taste, or odors, for example. The system must be sized according to water analysis, usage, and the required flow rate.

Sources

• Légifrance – Public Health Code, chapter on drinking water
  Definition of water intended for human consumption, obligations for those providing water to the public, and responsibilities related to its distribution.
• Légifrance – Regulatory provisions regarding water health safety
  Rules concerning food-related uses, the points at which quality requirements must be met, and distribution networks.
• Ministry of Health – What changes in 2026
  Evolution of drinking water health monitoring as of January 2026 and the integration of new parameters, notably PFAS and haloacetic acids.
• Ministry of Health – PFAS: learning about and reducing exposure
  Mandatory monitoring of 20 PFAS since January 2026 and a quality limit set at 0.1 µg/L for their sum.
• Ministry of Agriculture – Sectoral Vade-mecum, version 2.5, March 2026
  Health inspection reference guide including, in particular, the management of clean and drinking water, water verification, and corrective actions.
• Ministry of Agriculture – What is checked in a restaurant?
  Presentation updated in 2026 of the main elements checked during health inspections of catering establishments.
• Légifrance – Water reused in food sector businesses
  Conditions for the use of recycled water derived from raw materials, process water, and recycled treated wastewater in food businesses.