Kuwait's fresh water is made, not found. Most of it comes from coastal desalination plants, and the distilled product is then blended with brackish groundwater so it is palatable and stable in the pipes.[1] That blend is why a bakery in Shuwaikh or a beverage plant in Sabhan can see scale on "desalinated" water, and why the hardness reaching the line can shift from month to month.
This is a practical 30-day audit for Kuwaiti food and drink producers who want to find out where hardness is costing them money and bring it under documented control. It is aimed at plant managers, maintenance engineers and food safety leads.
TL;DR
- Kuwait's network water is a blend, so its hardness is moderate and can vary. Test it rather than assume it.
- Some sites also handle brackish water or tanker loads. Know exactly which equipment each one feeds.
- Run a short audit: week 1 sources, week 2 uses, week 3 targets, week 4 treatment and monitoring plan.
- Soften the heated and evaporative circuits. Use RO for product water where a consistent mineral profile matters.
- Keep product and product-contact water on a clearly identified potable supply.
In this article
- How blending puts hardness into desalinated water
- Week 1: Trace every source
- Week 2: Rank the water uses by risk
- Week 3: Agree a limit for each stream
- Week 4: Choose treatment and write the monitoring plan
- Summer in Kuwait: what changes on the line
- Frequently asked questions
How blending puts hardness into desalinated water
Hardness is the calcium and magnesium dissolved in water, reported as mg/l CaCO3. Distilled water from a multi-stage flash plant has almost none, which makes it flat to drink and aggressive towards metal pipes. The Ministry of Electricity, Water and Renewable Energy therefore blends it with a small proportion of brackish groundwater before distribution.[1] The brackish component brings calcium, magnesium, sulphate and chloride with it.
The result is network water that is neither very soft nor very hard, but that changes with the blend ratio and the season. On a production line, anything that heats, evaporates or recirculates that water concentrates it:
- boilers and steam generators between blowdowns;
- evaporative cooling towers, which lose water as vapour;
- pasteurisers, heat exchangers and CIP heaters;
- crate, tray and bottle washers running hot rinse water.
Week 1: Trace every source
Walk the site with the drawings and label every pipe and tank. Record:
| Source | Typical use on site | Main risk |
|---|---|---|
| Fresh (potable) network | Product, CIP, washers, boilers | Blend-dependent hardness, warm storage |
| Brackish supply, where connected | Irrigation, some wash-down or cooling | High hardness and salinity; must never reach product |
| Tanker deliveries | Top-up during shortages or works | Unknown origin, variable quality |
| Private well | Rare, usually non-potable duties | Very high dissolved solids |
Take samples from each source and from the outlet of every storage tank. Ask the laboratory for total hardness, calcium hardness, alkalinity, pH, conductivity or TDS, chloride, sulphate and silica. Our commercial water hardness testing guide for Kuwait explains sampling and interpretation in more detail.
Week 2: Rank the water uses by risk
List every point of use and score it on two questions: how badly does scale hurt here, and does the water touch product? A simple ranking might look like this:
- Boiler and steam feed. High scale risk, indirect product contact through culinary steam.
- CIP make-up and final rinse. High risk to cleaning performance and to product-contact surfaces.
- Pasteurisers and heat exchangers. High risk to heat treatment control.
- Cooling towers and condensers. High scale risk, no product contact.
- Washers. Medium risk, visible spotting on packaging.
- Ingredient water. Low scale risk, but high product-quality impact.
- General wash-down. Low risk.
Record daily volume, peak flow, temperature and running hours next to each item. The top four or five usually define the treatment plant.
Week 3: Agree a limit for each stream
Take limits from the equipment manufacturers' feedwater specifications, your product specifications and your food safety plan. Write them down with the test method and frequency. Typical decisions are:
- boiler and CIP make-up: softened to the boiler maker's limit, tested by titration each shift;
- cooling tower: make-up softened or inhibited, with the maximum cycles of concentration set by your water-treatment contractor;
- ingredient water: a conductivity or TDS band agreed with product development, plus a hardness range if the recipe depends on calcium.
Note that softened water carries more sodium and the same total dissolved solids as its feed, so it is not automatically suitable as an ingredient.
Week 4: Choose treatment and write the monitoring plan
Softening for the heated circuits. An ion-exchange softener is the standard tool. For lines that never stop, a duplex unit such as the Regal Twin 3672 keeps soft water available during regeneration.
For one washer or a small steam line with an overnight break, a single-vessel unit such as the Commercial Softener RF1465SO1 may be enough.
Reverse osmosis for product water. RO strips out most dissolved solids and gives a stable base that can be remineralised to a recipe. It needs pretreatment and a drain for the reject stream. The Industrial RO and Multi-Media Filtration system is built to the site analysis and output required.
Dosing. Antiscalant protects membranes and cooling circuits, and a second dosing line can remineralise or correct pH. The Sceptre DS130 dosing system is designed for these jobs.
Then write the monitoring plan: who tests what, how often, where the results are recorded and what happens when a result is out of limit. Include online conductivity on RO permeate and, where a failure would halt production, an online hardness monitor. Remember that a TDS pen does not measure hardness.
Food safety. The Public Authority for Food and Nutrition (PAFN) inspects food establishments in Kuwait.[2] Water used in food or on product-contact surfaces must be potable, and any treatment applied to it belongs in your HACCP plan with clear limits and records.
Summer in Kuwait: what changes on the line
Kuwait is one of the hottest inhabited places on earth, with summer air temperatures that can exceed 50°C.[3] That affects hardness control in ways a temperate-climate design guide will not mention:
- cooling towers evaporate far more water, so hardness in the circulating water climbs quickly;
- water in roof and ground tanks warms up, which speeds scaling and biological growth;
- plant rooms overheat, shortening the life of controllers, resin and dosing chemicals;
- demand peaks can bring tanker top-ups onto the site.
Plan extra tower inspections, bleed checks and tank cleaning for June to September, and shade and ventilate the treatment plant room.
Sovereign Water's maintenance service can take on planned visits for resin, membranes and dosing equipment once the system is running. For sizing detail, see our commercial water softener specification guide for Kuwait.
Frequently asked questions
Why do we get scale if Kuwait's water is desalinated?
Distilled water is blended with brackish groundwater before distribution, so it carries some hardness. Heating and evaporation on the line then concentrate it.
Can we use brackish water for cooling?
Some sites do, but it needs its own treatment and it must be kept completely separate from product and product-contact water.
How long does a hardness audit take?
A focused audit can be done in about four weeks: sources, uses, limits, then treatment and monitoring.
Should ingredient water be softened?
Usually not. Softening adds sodium and does not reduce dissolved solids. RO, sometimes with remineralisation, is the more common route.
What changes in summer?
Evaporation and tank temperatures rise, so cooling towers and storage need more frequent checks.
Talk to Sovereign Water about your line
Send us your sources, test results, daily volumes, peak flows and the equipment you need to protect. Our Kuwait team can discuss a treatment plan and prepare a quotation.
Sources
[1] Akber A. and Mukhopadhyay A., "An overview of Kuwait's water resources...", 2021 (PMC8137678): https://pmc.ncbi.nlm.nih.gov/articles/PMC8137678/
[2] Arab Times, report on PAFN food safety inspections in Jahra: https://www.arabtimesonline.com/news/jahra-inspections-uncover-food-safety-violations/
[3] World Meteorological Organization, verification of the 53.9°C Mitribah record: https://wmo.int/media/news/wmo-verifies-3rd-and-4th-hottest-temperature-recorded-earth