Cold water distribution is the part of the system that gets the least attention in Israel, but it's the most exposed to hard water and 4–6 bar inlet pressure. A proper cold-water run is laid during renovation and lasts 30–50 years untouched. A bad one starts weeping in 3–5 years and drags several walls down with it.
What a cold-water distribution covers
Cold water enters the apartment through the riser from the building main. Right at the entry there is an apartment shut-off (sometimes several — a main one and an extra for garden/balcony use), a meter, and then distribution to the fixtures:
- Toilet — cistern (and a hygiene shower, if present).
- Basins — bathroom, kitchen.
- Bathtub/shower — mixer.
- Cold feed to the boiler — this is also the "supply" for the entire DHW system.
- Washing machine and dishwasher — usually cold only.
- Balcony/yard — a tap for watering or hose-down (if present).
- Filters — mechanical at the inlet, sometimes a softener for hard water.
Distribution layouts
Tee
A trunk line runs across the apartment with tees branching to each fixture. The most common layout for small apartments. Quick to install, inexpensive.
- Pressure drops when two points are used at once.
- Repairing one point requires shutting down the whole line.
Manifold
From the apartment inlet, a trunk leads to a distribution manifold, and from it a dedicated pipe runs to each fixture. More expensive, but more convenient in use.
- Stable pressure at every point.
- Individual isolation valves on each outlet.
- Any point can be serviced without shutting off the others.
Hybrid
Manifold for "complex" points (shower, kitchen, boiler), tees for "simple" ones (toilet, washer). A cost/convenience compromise.
Materials
PEX (cross-linked polyethylene)
The primary material in new builds. Blue for cold water. Flexible, installed in screed or along walls without welding.
- Service life 50+ years.
- Handles up to 16 bar.
- Doesn't corrode, doesn't scale from the inside.
Multilayer (PEX-AL-PEX)
A PEX alternative with similar specs. Threaded joints need occasional retightening.
Copper
Reliable, long-lasting, expensive. More common in high-end builds or where high heat resistance is needed (less relevant for cold water).
Polypropylene (PP-R)
Rigid lengths joined by heat fusion. A cheaper alternative, but less flexible than PEX.
Galvanized steel
Found in older apartments. Over 30–40 years it scales up from hard-water salts and pressure drops. Replaced during renovation.
Inlet assembly — what goes in at the apartment entry
- Ball shut-off valve — the main one, for killing the whole apartment.
- Coarse filter — mesh strainer, catches sand and scale from the riser. Mandatory for protecting mixers and appliances.
- Water meter — some management companies install it before the apartment, others inside.
- Pressure reducer — if inlet pressure is above 4 bar (typical for Israel). Protects mixers and appliances.
- Fine filter — optional, before a softener or a drinking-water point.
- Water softener — optional, but recommended in Israel given hardness of 250–400 ppm.
What the plumber does during distribution
- Plan the routes and draw-off points.
- Chase walls or lay in screed (screed is more common).
- Install the inlet assembly and manifold (for manifold layouts).
- Run the pipes from the manifold/trunk to each point.
- Fit isolation valves at each point (to allow mixer swaps without killing everything).
- Pressure test the system at 10 bar for 24 hours — a mandatory step before sealing up.
- Final fixture connection.
Pricing in Israel
- Cold-water distribution in a 2-room apartment (tee, PEX) — 2,000–4,000 ILS
- Manifold distribution in a 3–4 room apartment — 4,500–8,000 ILS
- Replacing galvanized with PEX (incl. demolition) — 3,000–6,000 ILS
- Turnkey inlet assembly (valve + filter + meter + reducer) — 700–1,500 ILS labor + 600–1,400 ILS parts
- New cold-water point (for a washer/dishwasher) — 400–900 ILS
- Water softener — 2,500–7,000 ILS equipment + 500–1,000 ILS installation
Cold water is usually cheaper than hot — no insulation, slightly fewer materials (blue PEX is cheaper than red).
Common mistakes
- No inlet filter. Sand and scale from the riser reach mixer cartridges — they clog in 1–2 years and the mixer drips.
- No isolation valves at fixtures. To swap a mixer you shut down the whole apartment — annoying.
- Joints buried in screed. Any leak = floor demolition. Joints must sit behind inspection hatches.
- Same color for cold and hot pipes. Five years later, nobody remembers what's what. Use blue for cold, red for hot — that's the standard.
- Ignoring pressure. Inlet is 5–6 bar, the mixer is rated for 3 bar — seals weep and lifespan drops.
Timeline
- Full distribution in a 3-room apartment — 3–4 working days (incl. chasing).
- Replacing old distribution with PEX while keeping points — 1–2 days.
- Connecting a new cold-water point — 1–3 hours.
- Installing the inlet assembly — 2–4 hours.
Frequently asked
Do I need a water softener in Israel?
Not mandatory, but noticeably useful. Hard water cuts the service life of mixers, boilers, and dishwashers by 2–3×. A washing machine caked in limescale uses more detergent and heats more slowly. A mid-range softener pays for itself in 4–6 years through extended appliance life.
Can I connect a washing machine without a dedicated isolation valve?
No. By code and by common sense, any "consuming" appliance must have a shut-off in front of it. Washing machines leak regularly (hose gasket) — without a valve, you shut off the whole apartment.
Why have a separate tap for balcony/yard watering?
In winter (if temperatures approach zero — northern Israel, the Golan), the outdoor line is isolated so it doesn't freeze. In summer it's convenient to hose down the balcony or water plants without turning on the internal distribution. A dedicated tap solves both.
Is the water meter inside or outside the apartment?
In most new Israeli buildings, meters sit in a shared cabinet on the floor or in the basement (managed by the Vaad Bayit). In old buildings — sometimes inside the apartment. Check with your Vaad — this is their responsibility.