Instruc. for constructors

Instructions for constructors regarding water supply and piping

Hagihon Co. Ltd. – Jerusalem's sewage and water association, was established by the Jerusalem municipality to manage and develop municipal water and sewage systems.

1. Hagihon Company's function

Hagihon Company's function (hereinafter: the Company) is to supply the consumers with water at reasonable amounts and pressures, subject to the water network's technical capacity and at the quality required by Ministry of Health regulations.

Additionally, the Company's functions are to handle removal of waste water and drainage. This document only discusses the issue of water supply. The Company has a similar process for regulating sewer connection and constructors must apply to the Company's sewage department with regard to sewage and drainage.

2. The power laws and regulations

These instructions do not derogate from the power of any law or regulation.
3. Receiving information before planning

The plumbing planner must apply to the Company for technical information and updated technical instructions regarding conditions of water supply to the property, and the planner must design a plumbing solution that ensures regular water supply to all parts of the property at any time and for the long term. The planner must base his engineering solution on the information and instructions received from the Company. Among other things, the Company will provide information about the municipal mains line from which water will be supplied to the property, expected pressure range on the municipal grid, expected connection point and other instructions including measurement method, need for private pooling and special conditions. The Company does its best to provide updated, reliable information, but the binding determination will be when the piping plans are examined (see paragraph 5 below).

4. Submitting plans and calculations

After the constructor applies to the municipal licensing department for a building permit, the construction must submit the following documents to Hagihon:

4.1 Architectural plan on a scale of 1:100 ("submission plan").

4.2 Two sets of plumbing plans on a scale of 1:100 that include an environment sketch and building construction plan at a scale of 1:1000 as well as location of water meters including details of construction of the locations designated for water meters. One plan will be returned to the constructor with a stamp of approval from Hagihon.

4.3 AutoCad file of the above plumbing plan.

4.4 Water supply scheme.

4.5 Space concentration form issued by the municipal licensing department. If the new construction is on property on which an existing building or part of one were demolished, this fact will be denoted on the space concentration form with details of the size of the demolished area.

4.6 Expected water consumption data: minimum rate, average rate, peak rate, fire fighting.

4.7 Information about the engineer designing the plumbing system: name, precise address, telephone number, fax number, e-mail address.

4.8 Constructor's details, including Company number and/or ID number.

4.9 In cases of requests for "building add-ons", the constructor must propose a solution for moving the water meters should they be damaged, covered or access to them restricted due to the planned construction.

5. Plumbing plan inspection

The Company will inspect the plans and the above data to ensure the proposed engineering solution ensures regular water supply to the property at all times and for the long term. The Company will examine, among other things, whether the private network required decreased or increased pressure and will demand construction of the required devices (private pooling, pressure reducer, pressure breaking tank, pressure ensuring tank, pumping device, hydrofor etc.). The Company will require changes in the plans based on its findings. Should the Company have remarks on the plans; the Company will submit its remarks directly to the plumbing designer and the planner will be required to submit amended plans for approval. Company approval of plumbing plans is part of the municipal construction permit process. The construction permit will not be issued without this permit from the Company.

6. Private water tanks

Buildings with particular properties are required by the Company to build independent water tanks to ensure water supply to the consumers even in times of shortage in the municipal water supply. Among the buildings that require such tanks are hospitals, hotels, schools, dormitories, retirement homes, protected living, industry (depending on circumstances) and any property for which water stoppage may comprise a health, hygienic or other risk and cause great suffering for the public using the property. Other buildings required private tanks as part of the private network pumping system and/or part of the fire extinguishing system. Design of private tanks will consider, among other things, periodic replacement of the water in the tank to prevent water from remaining in the tank for long periods, derogating its quality.

7. Planner's responsibility

The plumbing inspection or provision of a permit by the Company do not exempt the plumbing planner and constructor from their full professional responsibility to plan and execute a correct and befitting plumbing engineering solution. The plumbing planner must investigate properly the conditions of water supply from the municipal water system and design the private network appropriately, including pressure decreasing or increasing devices, water tanks, fire extinguishing etc., as required by the circumstances.

8. Fire extinguishing requirements

Hagihon Co. requirements and inspections do not include fire extinguishing or sprinkler systems. On this matter the constructor must receive instructions from the fire and rescue services.

Should the planner wish to connect internal or external water hydrants directly to the grid, Hagihon will examine whether the municipal water system has the capacity to provide the projects internal or external extinguishing system's water consumption.

Should the planner wish to connect a sprinkler system directly to the city grid, the planner will fulfill the fire department and Hagihon Co. permission procedure with regard to private water sprinkler systems (attached as Appendix A).

9. Connection diameter and deviant water consumption

The Company will determine the diameter of the water connection and diameter and type of water meter according to pressure in the municipal water system and according to the water consumption expected in the property, based on data submitted by the plumbing planner following Company approval.

Hagihon Co. is not obliged to provide peak deviance or unusual pressure demands. Hagihon will examine each case on its own merit and should the grid not enable direct supply will stipulate planning permission with a private tank and pumping system to supply the consumers' capacity and/or pressure demands.

With regard to water supply to extinguishing systems, including sprinkler systems, if the fire department and Hagihon Co. determine such extinguishing supply may be provided directly from the grid, and should the constructor decide to rely on direct supply instead of building an internal tank and pump system, Hagihon will install a larger connection and enlarged measurement system and debit the constructor with prior maintenance fees for the enlarged system.

10. Prohibition on pumping directly from city grid or exploiting city water pressure

The Company does not allow pumping directly from the supply line, only through an input tank of the appropriate size. The Company also does not allow using city grid pressure for operating any machine, device or process.

11. Paying levies

The constructor will pay the legally required levies to the Company before the Company provides the municipality with approval for a building permit.

11.1 Water system development levy, based on the area of the plot and constructed area noted on the Municipal Licensing Department space concentration form. The levy is a one-time payment determined by law, required to enable development of the city water system and all its components. The fund formed by payment of this levy finances purchase of additional water rights for the city from water supplier, Mekorot Co., laying new municipal pipelines, constructing city pooling and pressure tanks, constructing various water facilities etc.

If the construction permit relates to construction on property on which an old legal building or part of one was demolished, the area of the demolished building will be deducted from the area of new construction that must pay development levy, according to Hagihon's procedures.

11.2 Private network connection levy, finances the connection line from the water mains to the border of the property, including general measurement system, and costs of inspection and Company's general expenses.

11.3 Water meter levy, paid according to the number of required water meters. This levy finances the expenses of buying and installing the meters by the Company.

12. Contract with "authorized lab"

The constructor will sign a standard contract with an authorized lab (e.g. Standards Institute) to inspect the hygiene system (water and sewage) according to the details listed in Appendix B(1) and B(2). In the course of construction, the constructor will invite the lab inspector for inspections according to the conditions of the contract with the lab, and the constructor will carry out all lab demands.

When construction ends, the constructor will receive a summary report from the lab and submit a copy to Hagihon. The report will include results of all the tests included in Appendix B (1 or 2).

Hagihon will not provide approval for Form 4 without a summary report from the authorized lab mentioned above and confirmation from the lab that defects were repaired.

12.A Temporary water connection for construction purposes: submitting Form 2

After receiving a building permit, the constructor will ask the city licensing department for Form 2 ("approval for provision of electricity, water and telephone services") and submit this form to Hagihon in order to receive temporary water connection for construction.

A Hagihon representative will set a meeting with the constructor on the premises in order to determine the precise location of the water meter based on the plumbing plan approved by the Company in the building permission issuing process.

The Company makes an effort to install the water connection line in the final diameter and route. For this purpose the constructor will provide the Company with final area development plans on which the measurement system previously approved by Hagihon is marked.

If area development conditions do not enable laying a municipal grid, the temporary connection for construction will be placed close to the existing city water grid and the constructor will have to lay a private water pipe from there at his expense.

If the connecting line crosses a road or way, said crossing will only be made if conditions allow it, otherwise temporary crossing will be made at the constructor's expense.

Towards the end of the construction process, the temporary connection is turned into the final connection to the property. A constructor who did not order temporary connection to the property may run into difficulties and delays when submitting the final connection (e.g. municipality refuses to issue Form 2; delays in providing city approval to Hagihon for the connecting line crossing, etc.). Furthermore, the Jerusalem bylaws forbid drawing water from any other source, so in any case one must request temporary water connection for construction.

In view of the above, temporary water connection must be ordered for every property and every building on the property when construction begins, at the location determined on the plumbing plan approved by Hagihon.

12.B Prohibition on using construction connection to supply water for housing

The temporary construction connection is provided for construction purposes only. The law forbids using this connection when the house is populated.

Prior to populating the house, the constructor must obtain Form 4 and order a final water connection from Hagihon, as specified below.

12.C Rinsing and disinfecting drinking water systems

The piping and storage systems for drinking water will be rinsed and disinfected before being put into use.

Rinsing and disinfection will be carried out according to Ministry of Health instructions and by a party authorized and certified by the Ministry of Health.

The disinfection contractor will provide a certificate to confirm the disinfection process was carried out. The certificate will be drafted according to Ministry of Health instructions and procedures.

13. Using materials with a standard label and water saving accessories

13.1 The constructor may only use materials and accessories bearing an Israeli standard label or approval from the Standards Institute for the plumbing system.

13.2 Water saving devices, e.g. capacity regulators on taps, dual volume toilet cisterns, water regulators on irrigation systems etc. In industrial buildings, attention should also be given to production systems that save water, water recycling methods etc.

14. Water meter and distributor

The constructor must prepare a special location for the general water meter and individual locations for apartment meters (distributors).

14.1 Main (general) meter for the property will be installed in a location determined by the building architect and approved by the Company, usually on the boundary of the property near the mains line, in a location with eternally free access for reading and maintenance purposes. The constructor will prepare an appropriate dedicated location for the water meter without placing it near the gas and electricity meters or garbage room etc. The main meter will be installed in a measurement meter with spigots on both sides of the meter and other required accessories (e.g. no-return, filter, pressure reducer, etc.).

14.2 Individual meters: the constructor will prepare a distributor for apartment meters according to plan no. 04.163.74 (Appendix C) attached below. The distributor will be placed in a location accessible for meter reading and servicing. The location will be dedicated to water meters, without gas and electric meters or other devices.

14.2.1 The distributor will be made of materials and accessories with an Israeli standard label.

14.2.2 The distributor must be assembled from screw-on accessories and fittings only.

14.2.3 Welded distributors will not be approved. Experience shows welded devices suffer from major maintenance problems with time.

14.2.4 The distributor will be located in a place with eternal free access for reading meters and maintenance work. In general, the distributor will be installed outside in the ground or at the ground floor of the building. The location of the distributor will be drained so any leak or water spill while changing meters etc. will quickly be removed without causing flooding or damages.

14.2.5 The dimensions on the above plan must be adhered to. No more than 6 meters may be installed above each other.

14.2.6 The taps at the base of the distributor upright pipe as well as the taps on both sides of the meters will be ball type, diagonal or gate (spigot), bearing an Israeli standard label.

14.2.7 At least 10cm space must be left between the distributor and the back wall to enable easy access for dismantling or replacing accessories.

14.2.8 The distributor must be completely stable and well anchored. If the interior piping beyond the meters is made of plastic, the distributor must be firmly anchored to enable removing and changing meters without the distributor moving at all.

14.2.9 The apartment number of each meter must be written in bright yellow color on the distributor upright. The distributor and piping must be arranged so that the lowest meter supplies the lowest apartment, the meter above it supplies the next apartment and so on until the uppermost meter supplying the uppermost apartment.

14.2.10 The distributor will have long screws (nipples) on the location of the individual meters. Hagihon will later assemble the individual meters (paragraph 18 below).

14.2.11 In multi-story buildings with elevators, individual water meters may be placed on each floor. The meters must be placed in a dedicated cabinet, without electric, gas or other meters, and special care must be given to drainage, as mentioned above. Furthermore, the constructor must prepare a sleeve at least 2" in diameter to connect the floor meter cabinets and serve as a conduit for cables that enable remote reading of the meters.

14.2.12 In addition to the above (not necessarily for multi-story buildings) the Company will demand at its discretion additional preparations for concentrated computerized meter reading.

14.2.13 The distributor will include a UFR (unmeasured flow reducer) flow control device specified in the plan (Appendix C).

15. Completion of plumbing in the building and booking a plumbing inspection

Company confirmation of plumbing condition is a prior stipulation for receiving a Form 4 from the city licensing department. In view of this, the constructor must build and finish the plumbing system on time. When this system is finished and completed, from the general measurement system, through the distributor and every individual meter, including tanks, pressure reducer, pumps etc., (according to circumstances) and is under water pressure (from the construction connection), the constructor will book a plumbing inspection from the Company's private networks department.

16. Building plumbing inspection as a condition for Form 4

The Company's plumbing engineer will examine and ascertain the building plumbing was executed according to the plans and documents approved by the Company and ensure the building has a "summary report" from the authorized lab. After the constructor makes all necessary repairs and notifies the Company, a water connection in the permanent location will be planned for the property and confirmation for Form 4 will be issued.

A partial list of the inspections conducted by the Company:

16.1 Summary report from authorized lab (e.g. Standards Institute) attesting that no malfunctions were found with regard to the water plumbing system execution. The report will include the results of all tests included in the appendix (1 or 2).

16.2 Approval from a party authorized by the Ministry of Health that the building's water tanks and systems underwent cleaning and disinfection.

16.3 Was the plumbing system executed according to instructions of this document and the plan and scheme approved by the Company.

16.4 Do final location and diameter of connection to the city line conform to the plan.

16.5 Was the main meter measurement system prepared in the dedicated location and according to the approved plan.

16.6 Do the location and form of the individual measurement systems (distributor) conform to given instructions.

16.7 Is the number of the appropriate apartment written on each arm of the distributor.

16.8 Was an appropriate pressure reduction system installed per instructions (reducer type and diameter).

16.9 Was a pressure increasing system installed per instructions (pumps, input tank, output tank, hydrofors etc.)

16.10 Was an appropriate water tank constructed with periodic water replacement to prevent the water from being contaminated due to stagnation.

16.11 Was an appropriate double check valve installed per instructions.

16.12 Were water saving accessories installed in the apartments (capacity regulators on taps, dual volume toilet cisterns, water regulators on irrigation systems etc.)

16.13 Was water supply for gardening arranged according to the plan.

16.14 Did the Company receive payment for all levies and were all checks given in installments redeemed.

17. Final water connection

After the constructor receives Form 4 from the city and submits a copy to the Company, the Company will make the final connection and/or install in the general measurement system a final main meter and provide approval for individual water meters to be installed.

If the constructor installed a temporary water connection as specified above (paragraphs 12A and 12B) at this stage Hagihon only has to install the final measurement system. The final measurement system will be installed after Form 4 issued by the city is submitted.

18. Installing individual meters for apartments

After the final measurement system is installed, Hagihon will install individual meters for apartments on the distributors. The water meters will initially be registered in the contractor's name. Later, the contractor will refer the tenants to Hagihon to transfer possession of the meters.

19. Queries and questions

Hagihon Co. is at your service to provide information and responses to queries and questions.

For questions regarding the process and financial questions please apply to the customer service center at telephone number *2070 or by fax to 02-5651193.

For engineering questions please apply to the private network department plumbing engineer, telephone: 02-5651170, fax 02-5651174.

20. Confirmation of receiving the document

I hereby confirm having received a copy of the document Instructions for Constructors Regarding Water Supply and Plumbing.

Notice number ……………………………………

Site number ………………………………………..

Business partner's number ………………….

Licensing file ……………………………………….

Property address …………………………………

Neighborhood ……………………………………..

____________________ ______________ _____________________________

Date Name Constructor's signature and stamp


Appendix A of Constructors' Instructions
Fire department and Hagihon Co. approval procedure

Regarding private fire extinguishing sprinkler system

1. Prior to planning, the sprinkler system planner will ask for data about the municipal water grid from the Hagihon private networks department.

2. The planner will order an inspection from an authorized lab (e.g. Standards Institute) to examine pressures and capacity of the municipal water system and find out whether a private sprinkler system may be planned to connect directly to the water grid without going through an internal water reservoir. Additionally, the planner will operate according to all instructions of Israeli Standard 1596 (designing sprinkler systems), including affirming that the municipal water system is able to provide the necessary capacity and pressure in the long term and in extreme conditions.

3. The planner will receive from the Jerusalem fire department (fire prevention division manager, Mr. Yuri Ladishinsky) an opinion on whether an internal water tank is required or not to backup the sprinkler system (on the water supply scheme). The above will base his opinion on inspection results from the certified lab and information collected by the planner on the municipal water grid.

4. The constructor will sign a Compensation and Liability Writ for Hagihon in the attached format.

5. The planner will submit the approved plan in addition to results of the certified lab inspection and the above mentioned writ of compensation to the private network department for final examination whether the sprinkler system may indeed by connected to the water grid without an internal tank as backup.

6. Hagihon will carry out the connection or enlarged connection in return for the legally due payment.

Writ of Compensation and Liability

We the signatories below ____________________ CN/ID ____________________ hereby undertake and declare towards Hagihon Company – Jerusalem Waterworks and Sewage Ltd. (hereinafter: "Hagihon") as follows:

1. Whereas we would like to connect to Hagihon's water grid a private water based fire extinguishing system in our possession on the premises on ___________ Street, Jerusalem, to the municipal water grid (hereinafter: "the connection").

2. And whereas you have explained to us that with regard to provision of water for fire extinguishing purposes you are acting on detailed instructions from the fire department.

3. And whereas we have applied to you to carry out the connection, after having received permission from the fire department and having proven to the fire department's satisfaction that in our case conditions of Israeli Standard 1596 (with which we are familiar) have been upheld and we have undertaken to uphold conditions of Israeli Standard 1928 (with which we are familiar) before the fire department.

4. And whereas and despite the above we have been told that even though the Hagihon water grid upholds instructions of the above mentioned standards, unexpected malfunctions may occur (e.g. water shut-off initiated/not initiated by us, shut water spigot, clogs etc.), and in view of this you have recommended we construct a pumping system and water tank to support the fire extinguishing system in our possession should said malfunctions occur.

5. And whereas we have decided, after examining and considering the issue, not to construct a pumping system and water reservoir per your recommendation, for reasons concerning us and at our discretion.

6. "And whereas we were informed and are willing to pay Hagihon, when paying the water system development levy, maintenance fees in advance for maintenance of the extended water connection we chose as mentioned, at a rate determined by Hagihon."

7. We hereby undertake to compensate and/or reinstate Hagihon, immediately upon receiving an initial demand, for any debit and/or expense including expenses any third part demands from it, including legal fees, relating to damages caused or to be caused due to our deed and/or omission stemming, directly or indirectly, from our decision not to install an auxiliary water reservoir on our fire extinguishing system.

8. We are aware that only due to this writ, including our above commitment, Hagihon has agreed to make the connection.

9. We hereby declare we do not and will not have any demands and/or claims from Hagihon due to our decision not to construct an auxiliary water reservoir to support the fire extinguishing system in our possession and for all items specified in the writ of compensation and liability herein.

10. To remove doubt, the content of this writ of undertaking does not cancel additional undertakings we have given Hagihon and/or any other part with regard to its content, and this writ of undertaking doe not place any liability for the damages specified in paragraph 6 above on Hagihon.

11. We shall bring this writ of compensation and liability to the knowledge of any third party that replaces us, should there be one, and we are aware that as long as said third party does not sign a writ of compensation and liability in your favor in the format of the writ of compensation herein and submit it to you, we will continue to be liable towards you for all liabilities included in this writ of compensation and liability.

And to wit we have signed today ___/___/___


I, the signatory below, ________________ adv., hereby confirm this writ of compensation and liability has been signed before me by ____________________ ID/CN _______________ and that the signature was given after I informed the signatory of the significance of the writ of compensation and liability above.

* In case of a Company, I further confirm that Mr. ____________ ID ______________ and Mr. _________________ ID _______________ have signed on behalf of the above Company and are authorized to oblige it with their signature for any matter or thing.

________________________ _______________________, adv.

Appendix B(1) of constructors instructions

Constructor's appeal draft to certified lab

Plumbing inspection – landed structure

Details of required inspections:

1. Drainpipes under/inside poured parts (usually level 0.00): (if exists, inspection of each separately poured section)

2. Rainwater pipes: (for flat roofs or balconies only)

3. Cold water supply system + system sealing pressure test

4. Turbid water and drainage system.

5. Main water piping in yard.

6. Structure stage A sewer.

7. Waste water receptacles.

8. Permanent plumbing fittings.

9. Structure stage B

10. Conclusion of work – final inspection including completion of previous inspections of plumbing systems.

Appendix B(1) of constructors instructions

Constructor's appeal draft to certified lab

Plumbing inspection – saturated construction

1. Drainpipes under/inside poured parts (usually level 0.00): (if exists, inspection of each separately poured section)

2. Rainwater pipes

3. Cold and hot water supply system + system sealing pressure test

4. Turbid water and drainage system.

5. Main water piping in yard.

6. Joint water system for building

7. Structure stage A sewer.

8. Waste water receptacles.

9. Channeling stage A

10. Pressure increasing system

11. Permanent plumbing fittings.

12. Fire extinguishing system

13. Structure stage B

14. Channeling

15. Conclusion of work

Appendix C

Hagihon, Jerusalem Waterworks and Sewage Ltd.

Technical water department

Major file number 701-034

Coordination file number

Example of installing individual apartment water meters on distributors


Drafted by

Drawn by: Debale Shoshana



Plan no. 04-163-74

Date 20.10.96

Updated on 2.94 10.96 4.06

1. Spigot 3/4" or 1"x3/4", ball type

2. Galvanized or APC coated steel pipe

3. 1"-3/4" busing transfer

4. UFR - unmeasured flow reducer

5. Water supply pipe to apartment

6. General spigot tap 2"

7. 3/4" diameter nipple

8. Distributor upright pipe 2" galvanized or APC coated steel

9,10 Pipe anchoring to wall

11. Meter grounding bridge

12. 3/4" water meter (installed by Hagihon instead of nipple)

[On drawing]


Maximum 140cm

Minimum 24cm


A) Maximum number of water meters that may be installed on one side of the pipe is six.

B) Maximal height of top water meter face from ground 150cm

C) Distributor may not be welded together

D) All fittings of galvanized or APC coated reinforced steel, with IS 255 label, screwed on

E) All accessories with Israeli standard label

F) Device should be well anchored to the wall

G) Beyond water meter steel pipe labeled (2) may be installed. Other types of piping may only be installed after anchoring (10).