IOVO - Water supply and waste water engineering

This document specifies the characteristics and the requirements of air gap with injector Family A, Type D for nominal flow velocity not exceeding 3 m/s. Air gaps are devices for protection of potable water in water installations from pollution by backflow. This document is applicable to air gaps in factory-assembled products and to constructed air gaps in situ and specifies requirements and methods to verify and ensure compliance with this document during normal working use.
The fluid in the receiving vessel is assumed to have similar properties to the water supply. Where this is not the case, additional care or tests can be required to verify the efficacy of the solution in practical use.
The AD device is intended to be used in potable water installations according to EN 806 (all parts).

This document specifies and gives guidance on:
—   general requirements for storage of water outside consumers' buildings, including service reservoirs for potable water and reservoirs containing water not for human consumption at intake works or within treatment works, excluding those that are part of the treatment process;
—   design;
—   general requirements for product standards;
—   requirements for quality control and auditing, testing and commissioning;
—   operational requirements;
—   requirements for inspection, rehabilitation and repair.
The requirements of this document are applicable to:
—   design and construction of new reservoirs;
—   extension and modification of existing reservoirs;
—   significant rehabilitation of existing reservoirs.
This document does not apply to reservoirs formed by the building of dams or the use of lakes for water storage purposes.

The purpose of this document is to specify requirements for marking, identification, leaktightness, electrical and operational safety and mechanical resistance for sanitary tapware with opening and closing controlled electronically.
The conditions of use for the supply system type are specified in Table 2:
[Table 2]
Annex B lists possible consequences of using a product outside its recommended operating range.
[Figure 1]
[Figure 2]

This document specifies an analysing methodology for protecting potable water in potable water installations within and outside buildings but within premises from the risk of pollution by backflow of non-potable water and gives recommendations on the design, risk analysis, backflow prevention devices and their installation methods (see Figure 1 and Figure 2).
This methodology is also intended to be used outside premises for all water systems connected to a potable water distribution system up to and including the point of use (see Figure 3).
The product standards for the specific backflow prevention devices or arrangements are intended to be used in conjunction with this document. For the development of new devices or systems, this document is intended to be used as a reference to establish the necessary level of backflow protection.

This document is applicable to half-burnt dolomite used for treatment of water intended for human consumption. It describes the characteristics of half-burnt dolomite and specifies the requirements and the corresponding test methods for half-burnt dolomite. It gives information on its use in water treatment.

This document acknowledges the field of application for taps, shower outlets, shower sets and shower systems used in water supply systems with a pressure range of (0,05 to 1,0) MPa [(0,5 to 10) bar].
The tests described in this document are type tests (laboratory tests) and not quality control tests carried out during manufacture.
This document covers:
—   PN10 taps;
—   PN5 shower outlets;
—   PN5 shower sets;
—   PN10 shower systems.
The following products are excluded from this document:
—   shower taps on its own;
—   taps for filling bathtubs;
—   the tub filling function of combined taps;
—   the function of a tap that delivers e.g. boiling water or sparkling water, etc.;
—   body or side jet showers.
The conditions of use for taps and shower systems are given in Table 1. The conditions of use for showers sets and shower outlets are given in Table 2.
Table 1 — Conditions of use for taps and shower systems
Water supply system   Operating range of taps and shower systems
   Limits   Recommended
see Figure 1   dynamic pressure
≥ 0,05 MPa
(0,5 bar)
static pressure
≤ 1,0 MPa
(10,0 bar)   dynamic pressure b
(0,1 to 0,5) MPa
[(1,0 to 5,0) bar]
temperature   ≤ 70 °C a   ≤ 65 °C
a   This maximum temperature limit can only be reached for short durations not greater than 1 h.
b   Measured at the point of discharge.
NOTE   Taps and shower systems for use at pressures lower than those in Table 1 are not covered by this standard.
Table 2 — Conditions of use for shower outlets and shower sets
Water supply system   Operating range of showers
   Limits   Recommended
see Figure 1   dynamic pressure
≥ 0,05 MPa
(0,5 bar)
static pressure
≤ 0,5 MPa
(5,0 bar)   dynamic pressure
(0,1 to 0,3) MPa
[(1,0 to 3,0) bar]
temperature   ≤ 70 °C a   ≤ 42 °C
a   This maximum temperature limit can only be reached for short durations not greater than 1 h.
Key
1   cold water
2   hot water
3   mains supply pipe (supply pressures up to 10 bar)
4   water heater
Figure 1 — Supply system with a pressure range of (0,05 to 1,0) MPa [(0,5 to 10) bar]
Health and quality requirements in accordance to European and national legislation for final materials in contact with water intended for human consumption are not covered by this document.

This document specifies a method to determine the migration of substances from hardened cement based site-applied or site-formed materials (including pre-packaged mortars) into test waters after contact with the products. It also covers determination of migration from individual constituents of cement based products and materials (see Annexes A and B) and from associated non-cement based products for approval purposes (see Annex C).
Site-applied or site-formed cement based materials which cannot be cast as cubes or prisms e.g. some spray applied systems, fall in the scope of EN 14944−3 and not under this standard.
This document is applicable to site-applied or site-formed cement based materials intended to be used for the transport and storage of water intended for human consumption, including raw water used for the production of drinking water. It is also applicable to individual constituents of cement based products/materials and to associated non-cement based products/materials.
NOTE   Tests with the specified test water will not necessarily be representative of materials used in different kinds of waters and especially very soft waters.

This document specifies a method to determine the influence of site-applied cement based materials and associated non-cement based products/materials (including pre-packaged mortars) on the odour, flavour, colour, turbidity and total organic carbon (TOC) of test waters after contact with the products.
This document is applicable to site-applied or site-formed cement based materials intended to be used for the transport and storage of water intended for human consumption, including raw water used for the production of drinking water. It is also applicable to individual constituents of cement based products/materials and to associated non-cement based products/materials.
Site-applied or site-formed cement based materials which cannot be cast as cubes or prisms e.g. some spray applied systems, should be tested as factory made cement based products according to EN 14944−1.
NOTE   Tests with the specified test water will not necessarily be representative of materials used in different kinds of waters and especially very soft waters.

This document applies primarily to copper alloy and stainless steel ball valves with dimensions DN 6 to DN 100, for installations in buildings for potable water supply up to PN16 and a maximum distribution temperature of 65 °C. Occasional excursions up to 90 °C are permitted for a period of 1 h maximum.
The ball valves are classified by their nominal pressure being either PN10 or PN16.
This document specifies:
-   the requirements of the materials and the design of ball valves;
-   the mechanical, hydraulic and acoustic requirements of ball valves;
-   the test methods to verify the requirements of ball valves;
-   the marking requirements of ball valves.

This document specifies:
-   general requirements for water supply systems outside buildings including potable water mains and service pipes, service reservoirs, other facilities and raw water mains but excluding treatment works and water resources development;
-   general requirements for components;
-   general requirements for inclusion in product standards which can include specifications which are more stringent;
-   general requirements for installation, site testing and commissioning.
The requirements of this document apply to:
-   the design and construction of new water supply systems;
-   the extension of significant areas forming a coherent part of an existing water supply system;
-   interconnections between water supply systems;
-   significant modification and/or rehabilitation of existing water supply systems.
NOTE   It is not intended that existing water supply systems are altered to comply with this document, provided that there are no significant detrimental effects on water quantity, security, reliability and adequacy of the supply. However, this document is intended to cover all water infrastructure systems mentioned above since they are key to meet the sustainable goals of the cities and to show the urgent need to invest in them in order to consider fundamental aspects, such as resilience or mitigation/adaptation to climate change.

This document is applicable to sodium hypochlorite used for treatment of water intended for human consumption. It describes the characteristics of sodium hypochlorite and specifies the requirements and the corresponding test methods for sodium hypochlorite. It gives information on its use in water treatment. It also determines the rules relating to safe handling and use of sodium hypochlorite (see Annex B).
NOTE   While this document is not applicable to sodium hypochlorite generated in situ (see bibliographic reference [6]), the limits for impurities and chemical parameters apply.

This document is applicable to glass beads and glass granulate intended for treatment of water for human consumption, swimming pool and/or spa water. It solely describes the characteristics of glass beads and glass granulate and specifies the requirements and the corresponding test methods for glass beads and glass granulate.
General information on glass beads and glass granulate and general rules relating to safety is provided in Annex A.

This document specifies additional requirements to the product standards given in Clause 5 for valves and devices to prevent pollution by backflow of potable water with polymer parts and housings under internal pressure and without external loads intended for installations and equipment inside buildings conveying water for human consumption.

This document is applicable to aluminium-based coagulants used for treatment of water intended for human consumption. It specifies analytical methods to be used for products described in EN 878, EN 882, EN 885, EN 886, EN 887, EN 935 and EN 17034.

This document is applicable to ammonia solution used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements of ammonia solution and refers to the corresponding analytical methods. It gives information for its use in water treatment. It also provides basic information relating to safe handling and use of ammonia solution (see Annex B).

This document specifies the basic design and construction requirements for wastewater treatment plants for over 50 PT.
NOTE 1   Requirements for structures which are not specific for wastewater treatment plants are not within the scope of this document. Other ENs can apply.
NOTE 2   Equipment which is not solely used in wastewater treatment plants is subject to the applicable product standards. However, specific requirements for such equipment when used in wastewater treatment plants are included in this part.
NOTE 3   Although this document specifies the basic design and construction requirements for wastewater treatment plants for over 50 PT, many requirements are only technically and economically feasible at significantly larger sizes.

This document specifies:
a)   the field of application for mechanical mixing valves for use in a supply system of Type 1 (see Figure 1);
b)   the dimensional, leaktightness, pressure resistance, hydraulic performance, mechanical strength, endurance, corrosion resistance of the surface of the product, sequence of testing and acoustic characteristics with which sanitary tapware products including their components (flexible hose, pull out spray) need to comply where applicable;
c)   test methods to verify the characteristics.
The tests described in this document are type tests (laboratory tests) and not quality control or factory production control (FPC) tests carried out during manufacture.
This document applies to draw-off taps (mechanical mixing valves) for use with sanitary appliances installed in rooms used for personal hygiene (cloakrooms, bathrooms, etc.) and for food preparation (kitchens), i.e. for use with baths, wash basins, bidets, showers and sinks.
The conditions of use and classifications are given in Table 1.
[Table 1]
Figure 1 shows a supply system of Type 1 with a pressure range of (0,05 to 1,0) MPa [(0,5 to 10) bar].
[Figure 1]
Final materials included in the product are not covered by this document.

This document is applicable to devices for the generation and dosing of ozone. The ozone is generated in these devices according to the technology of dielectric barrier discharge. According to EN 1278 and EN 15074, ozone is suited for the use of the treatment of water intended for human consumption (drinking water), and for the treatment of swimming pool water respectively. Ozone can be added to the water for disinfection and for oxidative purposes. This document can also be applied for other technologies to generate ozone, e.g. electrolysis or UV irradiation, as far as reasonable or applicable.
This document specifies device’s construction, and test methods for the equipment used for in situ generation of ozone. It also specifies requirements for instructions for installation, operation, maintenance, safety and for documentation to be provided with the product.

This document specifies:
- general construction, performance and material requirements for Frost Resistant Taps for outdoor use (FRT), PN 10.
- the application in the potable water installation with a static pressure of maximum 1,0 MPa (10 bar) and a distribution temperature of maximum 25 °C (PWC).
FRT valves shall consist of the 3 areas shown in Figure 1.
The conditions of use are according to the following Table 1.
The requirements with regard to the potable water quality are specified in national regulations.

This document specifies design principles and performance requirements for sludge treatment and storage facilities at wastewater treatment plants serving more than 50 PT.
Guidance on operation is provided where it is necessary in order to facilitate the design of control and automation and design access to points of operation.
NOTE   Other sludges and organic wastes can be treated together with municipal sewage sludge where national and local regulations permit.

This document is applicable to lagoons and specifies the performance requirements for the installation of lagooning processes.
This document applies to wastewater lagooning processes treating municipal wastewater from combined or separate sewage systems and when used as a tertiary treatment.
NOTE   Lagoon systems are especially suitable for the treatment of wastewater where large flow variations occur (e.g. arising from surface water connections in the collection system). They are also especially suitable where large load variations occur (e.g. arising from fluctuating seasonal or industrial flows).

This document is applicable to sulphamic acid used as antifoulant for membranes in the treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding analytical methods for sulphamic acid. It gives information on their use as antifoulant for membranes in water treatment in Annex A.

The purpose of this document is to specify requirements for marking, identification, leaktightness, electrical and operational safety and mechanical resistance for sanitary tapware with opening and closing controlled electronically.
The conditions of use for the supply system type are specified in Table 2:
[Table 2]
Annex B lists possible consequences of using a product outside its recommended operating range.
[Figure 1]
[Figure 2]

This document specifies general requirements for instrumentation and specific requirements for process control and automation systems on wastewater treatment plants for more than 50 PT.
NOTE 1   Because of the rapid rate of development of sensor and control equipment, this document is intended as an overview and uses examples and general requirements, not detailed equipment specifications. Detailed information additional to that contained in this document can be obtained by referring to the Bibliography.
NOTE 2   Although EC directives become matters of law in member states of the EU and some other situations, this standard is intended for wider use and hence those directives with clear technical guidance of a type that would generally be appropriate in a standard are referenced in the text and listed in the Bibliography. The alternative of listing requirements copied from directives would potentially create unacceptable conflict when directives are revised.

This document specifies the requirements and gives recommendations for the design, sizing, installation, identification, commissioning and maintenance of rainwater harvesting systems for the use of rainwater on-site as non-potable water. This document also specifies the minimum requirements for these systems.
Excluded from the scope of this document are
-   the use as drinking water and for food preparation,
-   the use for personal hygiene purposes,
-   attenuation and
-   infiltration.
NOTE   Conformity with the document does not exempt from compliance with the obligations arising from local or national regulations.

This document specifies design principles and performance requirements for preliminary wastewater treatment using screens with a mesh size above 50 μm, at plants serving more than 50 PT. It also includes grit removal and grease separation.
NOTE 1   For micro-screens with a mesh size below 50 microns see EN 12255-16.
NOTE 2   The primary application of this document is for wastewater treatment plants designed for the treatment of domestic and municipal wastewater. However, it contains information that can also be useful for commercial and industrial wastewater pretreatment and for combined sewer overflows (CSO).
This document applies in combination with EN 12255-1 and EN 12255-10.

This European Standard specifies a method to determine the migration of substances from factory made cementitious products into test waters after contact with the products.
This European Standard is applicable to factory made cementitious products, e.g. cement mortar linings to metallic pipes, tanks, concrete pipes etc., intended to be used for the transport and storage of water intended for human consumption, including raw water used for the production of drinking water.

This document specifies:
a)   the field of application for pillar taps, bib taps, single and multi-hole combination taps for use in:
1)   a supply system of Type 1 (see Figure 1) with a pressure range of (0,05 to 1,0) MPa [(0,5 to 10) bar];
2)   a supply system of Type 2 (see Figure 2) with a pressure range of (0,01 to 1,0) MPa [(0,1 to 10) bar];
b)   the dimensional, leak tightness, pressure resistance, hydraulic performance, mechanical strength, endurance, corrosion resistance of the surface of the product, sequence of testing and acoustic characteristics with which sanitary tapware products including their components (flexible hose, pullout spray) need to comply where applicable;
c)   test methods to verify the characteristics.
The tests described in this document are type tests (laboratory tests) and not quality control or factory production control (FPC) tests carried out during manufacture.
This document is applicable to draw-off taps (single taps and combination taps) for use with sanitary appliances installed in rooms used for personal hygiene (cloakrooms, bathrooms etc.) and for food preparation (kitchens), i.e. for use with baths, basins, bidets, showers and sinks.
This document applies to sanitary draw-off taps of nominal size 3/8”, 1/2", 3/4" and 1” (PN 10).
The conditions of use and classifications are given in Table 1.
Table 1 - Conditions of use
[ table not reproduced here ]
[ figure not reporduced here ]
Figure 1- Supply system of Type 1 with a pressure range of (0,05 to 1,0) MPa [(0,5 to 10) bar]
[ figure not reporduced here ]
Figure 2 - Supply system of Type 2 with a pressure range of (0,01 to 1,0) MPa [(0,1 to 10) bar]
NOTE   Components which are part or can be delivered with sanitary tapware products are listed in Annex C.
Final materials included in the product are not covered by this document.

This document defines the minimum requirements for treatment systems, which generate the active substance - “Active chlorine” - from sodium chloride by electrolysis for on-site (in situ) operation.
The in situ generated active substance (IGAS), in this case active chlorine, may be put into a solution (“off-line”) or directly generated in the pipes (“in-line”).
This document specifies the device construction, and test methods for the equipment used for in situ generation of active chlorine. It specifies requirements for instructions for installation, operation, maintenance, safety and for documentation to be provided with the product.
The in situ generation of active substances and the placing of their precursors on the EU market are subject to the specifications of the Biocidal Products Regulation (EU) 528/2012 [“Biocidal products”]. Active substances, generated by devices, which are claiming compliance with this document, shall comply with the BPR for both the registered active chlorine, quality standards and the precursor in accordance with appropriate application and “Product Type” as listed in the BPR.
This standard does not identify applications for in situ devices for generation of active chlorine. The range of applications for in situ generation of chlorine is diverse. It is the responsibility of the economic operator/product supplier, claiming compliance with this standard, to identify the appropriate system type and operating conditions for the specific application and to:
-   specify the quality of the biocide appropriate to the application. This may be defined in national or international standards;
-   specify the appropriate product type and operating conditions (concentration, dosage rate and quality of the active chlorine);
-   specify any other regulatory requirements relevant to the specific application;
-   specify the appropriate precursor sodium chloride, for the application;
-   and to label the product accordingly.

This document specifies design principles and performance requirements for odour control and associated ventilation for wastewater treatment plants serving more than 50PT.

This document is applicable to cationic polyacrylamides used for treatment of water intended for human consumption. It describes the characteristics of cationic polyacrylamides and specifies the requirements and the corresponding test methods for cationic polyacrylamides. It gives information on their use in water treatment.

This document is applicable to anionic and non-ionic polyacrylamides used for treatment of water intended for human consumption. It describes the characteristics of anionic and non-ionic polyacrylamides and specifies the requirements and the corresponding test methods for anionic and non-ionic polyacrylamides. It gives information on their use in water treatment.

This document is applicable to polyamines used for treatment of water intended for human consumption. It describes the characteristics of polyamines and specifies the requirements and the corresponding test methods for polyamines. It gives information on their use in water treatment.

This document is applicable to sodium alginate used for treatment of water intended for human consumption. It describes the characteristics of sodium alginate and specifies the requirements and the corresponding test methods for sodium alginate. It gives information on their use in water treatment.

This document is applicable to poly(diallyldimethylammonium chloride) used for treatment of water intended for human consumption. It describes the characteristics of poly(diallyldimethylammonium chloride) and specifies the requirements and the corresponding test methods for poly(diallyldimethylammonium chloride). It gives information on their use in water treatment.

This European Standard specifies a method to determine the influence of factory made cementitious products on the odour, flavour, colour and turbidity of test waters after contact with the products.
This European Standard is applicable to factory made cementitious products, e.g. cement mortar linings to metallic pipes, tanks, concrete pipes etc. intended to be used for the transport and storage of water for human consumption, including raw water used for the production of drinking water.

This document specifies design principles and performance requirements for disinfection of effluents (excluding sludge) at wastewater treatment plants serving more than 50 PT.
NOTE   Sludge disinfection is described in EN 12255-8.

This document specifies the requirements for chemical treatment of wastewater by precipitation/flocculation for removal of phosphorus and suspended solids.
The application of polymers is not described in this document.
Differences in wastewater treatment throughout Europe have led to a variety of practices being developed. This document gives fundamental information about the practices; this standard has not attempted to specify all available practices.
NOTE Chemical treatment can be performed in combination with primary and more commonly with secondary treatment, but it can also be performed as separate tertiary treatment, usually in combination with filtration (see EN 12255-16). Chemical treatment can provide a potential contribution to the circular economy through the recovery of materials, such as phosphorus, from wastewater or sludge.

This document specifies performance requirements for treatment of wastewater using the activated sludge process for plants over 50 PT.
The informative Annexes A to W provide design information.

This document specifies:
- general construction, performance and material requirements for Frost Resistant Taps for outdoor use (FRT), PN 10.
- the application in the potable water installation with a static pressure of maximum 1,0 MPa (10 bar) and a distribution temperature of maximum 25 °C (PWC).
FRT valves shall consist of the 3 areas shown in Figure 1.
The conditions of use are according to the following Table 1.
The requirements with regard to the potable water quality are specified in national regulations.

This document specifies a procedure to evaluate the passive behaviour of stainless steels and other passive alloys used in products intended to come into contact with drinking water.
The passive state is the reason why no relevant amounts of metals are released from such materials into the drinking water. This test is used to verify whether the alloy under consideration is passive under conditions which can occur in drinking waters.
This document is not applicable for product testing. It is only applicable for the assessment of passive behaviour of materials.

This document is applicable to iron (III) sulfate solid used for treatment of water intended for human consumption. It describes the characteristics of iron (III) sulfate solid and specifies the requirements and the corresponding analytical methods for iron (III) sulfate solid and gives information on its use in water treatment. It also determines the rules relating to safe handling and use of iron (III) sulfate solid.

This document specifies the design requirements for plant and equipment to remove solids, other than screenings and grit, from raw wastewater, at wastewater treatment plants for over 50 PT.
It includes primary treatment with sedimentation, fine screens and micro-screens.
NOTE 1   The removal of screenings and grit is covered in EN 12255-3.
NOTE 2   Dissolved air flotation (DAF) is not covered in detail in this document because it is not commonly used for primary treatment in municipal wastewater treatment plants. It can be used for primary treatment of industrial wastewater, but then the design is specific to the application.

This document specifies the characteristics and the requirements of air gap with non-circular overflow (unrestricted) Family A, Type B for nominal flow velocity not exceeding 3 m/s. Air gaps are devices for protection of potable water in water installations from pollution by backflow. This document applies to air gaps in factory-assembled products and to constructed air gaps in situ and specifies requirements and methods to verify and ensure compliance with this document during normal working use.
The fluid in the receiving vessel is assumed to have similar properties to water. Where this is not the case, additional care or tests could be required to verify the efficacy of the solution in practical use.
The AB device is intended to be used in potable water installations according to EN 806 (all parts).

This document is applicable to iron (III) chloride sulfate used for treatment of water intended for human consumption. It describes the characteristics of iron (III) chloride sulfate and specifies the requirements and the corresponding analytical methods for iron (III) chloride sulfate and gives information on its use in water treatment. It also determines the rules relating to safe handling and use of iron (III) chloride sulfate.

This document is applicable to iron (III) chloride solution a) and iron (III) chloride hexahydrate b) used for treatment of water intended for human consumption. It describes the characteristics and specifies the requirements and the corresponding analytical methods for iron (III) chlorides a) and b) and gives information for their use in water treatment. It also determines the rules relating to safe handling and use of iron (III) chloride.

This document is applicable to iron (III) sulfate solution of various iron and/or acid contents (see 4.2) used for treatment of water intended for human consumption. It describes the characteristics of iron (III) sulfate solution and specifies the requirements and the corresponding analytical methods for iron (III) sulfate solution and gives information on its use in water treatment. It also determines the rules relating to safe handling and use of iron (III) sulfate solution.

This document is applicable to iron (II) sulfate heptahydrate and iron (II) sulfate monohydrate used for treatment of water intended for human consumption. It describes the characteristics of iron (II) sulfate heptahydrate and monohydrate, specifies the requirements and the corresponding analytical methods and gives information on their use in water treatment. It also determines the rules relating to safe handling and use of iron (II) sulfate.

This document defines minimum safety requirements to be observed in the planning, construction or reconstruction of wastewater treatment plants.
The purpose of this document is to ensure the protection of people.