Eco Mark Product Category No.158“Water-saving apparatus Version1.3”
Certification Criteria- Applicable ScopeA. Water-saving disc
B. Constant flow regulating valve
C. Aerator cap
D. Flow control valve
E. Showerhead with a water stop mechanism at hand
F. Showerhead with a small flow rate water discharging mechanism

Established:
Last revised:
Expiration Date:

January 1, 2016
December 15, 2022
December 31, 2027

Japan Environment Association
Eco Mark Office

NOTE: This document is a translation of the criteria written in Japanese. In the eventof dispute, the original document should be taken as authoritative.

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Eco Mark Product Category No.158 “Water-saving apparatus Version1.3”
Certification Criteria
Japan Environment Association
Eco Mark Office
1. Purpose of Establishing Criteria
Omitted.

2. Applicable Scope
Applicable scope of this product category is listed in the Table 1.
Table 1 Applicable Scope
Product typeA
BC
DEF

Water-saving disc
Constant flow regulating valve
Aerator cap
Flow control valve
Showerhead with a water stop mechanism at handShowerhead with a small flow rate water discharging mechanismNote)

1 The water-saving discs are those which are used in single faucet
for cold water of nominal diameter of 13, and those included in
the scope shall be the discs which enable water saving only by
replacing them with relevant materials, through such measures
as making the nuts stabilizing the valve seat packing, etc. inspecial shapes. Applicable to a disc which is easily replaced withan existing installed water-saving disc.
2 The constant flow regulating valves are those used for washinghands, faces or dishes, and those included in the scope shall be
the valves which enable water saving only by exchanging theproducts to limit the amount of discharge to a certain point.

3. Terminology
A disc designed to save water in a water faucet. Water
Water saving

discharge from a water faucet equipped with a water-discsaving disc is significantly smaller than that from a water
faucet equipped with an ordinary disc, at the same lever

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opening degree. Fixed type discs are included.
Among the control valves that maintain the flow at a fixed
Constant flow
regulating valve

amount to some extent regardless of changes in thepressure at the inlet or the outlet of the valve, the faucet
which has a control valve with the amount of flow set at a
fixed point.

Aerator cap

Faucet which can save water by mixing air into waterflow.
Among the control valves that maintain the flow at a fixed

Flow control
valve

amount to some extent regardless of changes in thepressure at the inlet or the outlet of the valve, a valve withvariable flow amount settings that saves water by
installing it on the spout side of the water stopcock.
The showerheads which are used in the bathrooms withShowerhead witha water stopmechanism athand

the mechanism of discharging or stopping water at handwith such switches as buttons or sensors which areinstalled within the area of users’ operation, which are
independent from the discharge switching mechanism orflow and temperature adjustment mechanism (hoses shallbe included).

Showerhead witha small flow ratewaterdischarging
mechanism

The showerheads which have the small flow rate water
discharging function (including the hose part), withinstalled on a bathroom shower faucet or a bathroom
shower bath faucet.
The “water supply equipment” shall mean the water pipe
bifurcated from the drainpipe installed by a water utility
company to supply consumers with water as well as theWater supply
equipmentwater supply fittings directly connected to them (suchfittings should be the faucets, etc. structurally connectedto the water pipe which are not easily to be removed andenable to supply water with the water pressure being
maintained; devices which are connected but can be easily
removed, such as hoses, shall not be included).

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A material component added for the intended purpose ofPrescribedgiving certain characteristics to a product. Impurities ofconstituent

0.1wt% or less that are technically unavoidable in themanufacturing process are not included.

4. Certification Criteria and Certification Procedure
4-1. Environmental Criteria and Certification Procedure
4-1-1 Resource Saving and Resource Recycling(1) Regarding

water-saving

performance

whentheapplying

watersaving

apparatus is equipped in the faucet, criteria items set by each product type intable2 shall be met.
Table 2 criteria items for water-saving performance
All the following requirements a)-d) shall be met.
a) When the handle is opened 120 degrees, the discharge
rate shall be more than 20% but not be more than 70%of that when the water faucet equipped with an ordinary
discA:Watersaving discb) When the handle is fully opened, the discharge rate shallbe not less than 70% of that of being equipped with an
ordinary disc.
c) If it is the type to be attached to the outlet, it shall be asingle type apparatus having the capability of being
applied to various types of outlets.
d) No electric energy shall be used.
All the following requirements a)-e) shall be met.
a) When the handle is fully opened, the proper flow shallbe 8 liters/min or less at each water pressure of 0.1 MPa

B: Constantflow
regulatingvalve

and more and at 0.7MPa and lower.
b) An instruction manual shall describe the installation
condition by its purpose to allow usage that meets theenough flow volumec) One constant flow regulating valve shall correspond to
one faucet.
d) If it is the type to be attached to the outlet, it shall be asingle type apparatus having the capability of being

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applied to various types of outlets.
e) No electric energy shall be used.
All the following requirements a)-d) shall be met.
a) At a water pressure of 0.1 MPa or more and at a waterpressure of 0.7 MPa or less, the proper flow shall not be
more than 80% of that of the faucet without the aerator
cap.
C: Aerator capb) The discharge shall not be less than 5 liters/min at awater supply pressure of 0.1 MPa with a fully opened
lever.
c) If it is the type to be attached to the outlet, it shall be asingle type apparatus having the capability of being
applied to various types of outlets.
d) No electric energy shall be used.
All the following requirements a)-e) shall be met.
a) At a water pressure of 0.1 MPa or more and at a waterpressure of 0.7 MPa or less, the proper flow shall not be
more than 80% of that of the faucet without the aeratorcapb) The discharge rate at the installed place with the handle(lever) fully opened and at a water pressure of 0.1 MPashall not be less than the following values.

D: Flowcontrol valve

Installation locations

discharge rate

Washroom5L/minutes

Kitchen

5L/minutes

Shower room

8L/minutesc) An instruction manual shall describe the installation
condition by its purpose to allow usage that meets theenough flow volume.
d) If it is the type to be attached to the outlet, it shall be asingle type apparatus having the capability of being
applied to various types of outlets.
e) No electric energy shall be used.

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All the following requirements a)-c) shall be met.
a) The showerheads with the mechanism of discharging or
stopping water at hand with such switches as buttons orE:Showerhead

sensors which are installed within the area of users’with a water

operation, which are independent from the dischargestopswitchingmechanism atadjustment mechanism.

handmechanism

orflowandtemperatureb) If it is the type to be attached to the outlet, it shall be asingle type apparatus having the capability of being
applied to various types of outlets.
c) No electric energy shall be used
All the following requirements a)-c) shall be met.
a) With the showerheads installed to the bathroom
shower faucets or the bathroom shower bath faucet, theF: Showerhead
with a small
flow rate

discharging power shall be measured, and the value
obtained shall satisfy either of (i) or (ii) below.
(i) Without the mechanism of aeration into the flow:
0.6N or morewaterdischarging
mechanism(ii) With the mechanism of aeration into the flow:
0.55N or moreb) If it is the type to be attached to the outlet, it shall be asingle type apparatus having the capability of being
applied to various types of outlets.
c) No electric energy shall be usedNote)

Testing method of the discharging volume shall conform to thedischarging volume test prescribed by JIS B 2061.

[Certification Procedure]
The statement that the device is in compliance with the water saving
standards shown in Table 2 shall be included in the attached certificate. Inaddition, a certificate showing the results of measurement by a third -party
organization or by the applicant shall be submitted.
(2) Maintenance and repair subcontract systems shall be available, and repairs
shall be carried out as requested by the users. Supply of the spare parts shallbe ensured for 6 years after production of the product stops .

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158V1criteria[Certification Procedure]Compliance with this item shall be indicated in the attached certificate. Inaddition, the applicant shall submit copies of product documentation
indicating the matters related to this item.
4-1-2. Restriction and Control of Hazardous Substances(3) The product packaging and packing shall be made as simple as possible andsufficient attention shall be paid to the easiness of recycling and the reductionof environmental burdens at the time of disposal. In addition, plastic materials
used in product packaging and packing shall not be added plastic containing
halogen to the polymer backbone.
[Certification Procedure]
Product packaging material and a packaging method shall be specificallyindicated in the attached certificate. Whether or not any plastics containing
halogens in the polymer backbone for the product packaging and packing
shall be stated in the Attached Certificate.
(4) In case an antimicrobial finishing is made in the product, the product shall beregistered with such as the SIAA Mark of Society of Industrial technology for
Antimicrobial Articles or Registration system for the use of antimicrobial
performance criteria of Japan Construction Material & Housing Equipment
Industries Federation, etc.
[Certification Procedure]Compliance with this item shall be indicated in the Attached Certificate. In
the case of using antimicrobial agents, a copy of a certificate that certifies
the registration with the SIAA Mark of Society of Industrial technology for
Antimicrobial Articles or Registration system for the use of antimicrobial
performance criteria of Japan Construction Material & Housing Equipment
Industries Federation, etc. shall be submitted.
(5) In manufacturing the applied product, related environmental laws andregulations and pollution control agreement (hereinafter referred to as the“Environmental Laws, etc.”) must be followed with respect to air pollution,water contamination, noise, offensive odor, and emission of hazardous
substances in the area where the plant performing the final manufacturing
process is located.
In addition, the state of compliance with the Environmental Laws, etc. for the7/10

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past five years from the date of application (whether there is any violation) must
be reported. If there is any violation, proper remedies and preventive measures
shall have been already taken, and the related Environmental Laws, etc. must
thereafter be followed appropriately.
[Certification Procedure]With respect to the compliance with the Environmental Laws, etc. in the area
where the plant performing the final manufacturing process is located, acertificate issued by the representative of the business of manufacturing theapplied product or the relevant plant manager (entry or attachment of a listof names of the Environmental Laws, etc.) must be submitted.
In addition, the applicants shall report whether there is any violation in thepast five years, including a violation subject to administrative punishment
or administrative guidance, and if there is, the following documents in a andb must be submitted:
a. With respect to the fact of violation, guidance documents fromadministrative agencies (including order of correction and warning) andcopies of written answers (including those reporting causes and results ofcorrection)tosuchdocuments(clearlyindicatingaseriesofcommunication);b. Following materials (copies of recording documents, etc.) concerning themanagement system for compliance with the Environmental Laws, etc. in1)-5):
1) List of the Environmental Laws, etc. related to the area where the plant
is located;
2) Implementation system (organizational chart with roles, etc.);
3) Bylaws stipulating retention of recording documents;
4) Recurrence prevention measures (future preventive measures);5) State of implementation based on recurrence prevention measures(result of checking of the state of compliance, including the result of onsite
inspection).
4-1-3. Information Provision to users(6) Information a) and b) mentioned below shall be indicated in users manuals,
catalogs, website, etc. in an easy-to-read manner.
a) Types of faucets which can be installed and the methods of their installation.
b) If the water-saving effects arise on certain conditions, information on
installation conditions, etc. (this includes the matters to be noted that a8/10

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constant flow regulating valve or a faucet with built-in constant flow
regulating valve should be installed in the part of the pipe after branchingoff; branching of the pipe shall not be conducted after the part of installation).
[Certification Procedure]
Copies of a corresponding part in the instruction manual, catalog and web
site, etc. that indicate information to users shall be submitted.
4-2. Quality Criteria and Certification Procedure(7) The quality of the Product shall conform to corresponding Japanese IndustrialStandards (JIS) or other related quality standards. Regarding a water supply
equipment, the product quality shall meet Article 5, ordinance of Water Work
Law “Standard for structure of domestic water supply equipment”.
[Certification Procedure]
A certificate certifying the conformity with the corresponding JIS, Article 5,
ordinance of Water Work Law “Standard for structure of domestic watersupply equipment”, etc. or a certificate such as quality test results conductedby a third party institute or applicant’s own shall be submitted.

5. Product Classification, Indication and Others(1) Products shall be classified (application classification) by product type shownin the applicable scope (Table 1) and by product name. When the criteria items
A-F on water saving performance listed in Table 2 are multiply met at a time,
it is considered as in the same classification.
(2) Regarding products which correspond to designated procurement items underthe "Act on Promotion of Procurement of Eco-Friendly Goods and Services by
the State and Other Entities (Green Purchasing Law)", conformity status forevaluation criteria will be announced by a certification number on the websiteof the Eco Mark Office.
(3) In principle, Eco Mark shall be indicated on the product. The Eco Mark
Utilization Contractors who own the Eco Mark products shall also be allowed toindicate the description and the certification number as before.

9/10158V1criteria(Note for the indication)*For indicating the logo, Eco Mark certification number (eight -digit number) or
the name of the licensee using the logo shall be appeared.
* Such expression as “Eco Mark product” can be used following the 2.(2) of the
Guide to Eco Mark Usage.
“Eco Mark product”, “#Eco Mark”, “www.ecomark.jp”, “Eco Mark Certificate”*In accordance with “Environmental Labeling Guidelines” of the Ministry of theEnvironment of Japan, etc., the environmental claims of certified products may
be indicated in association with Eco Mark.
(https://www.env.go.jp/policy/hozen/green/ecolabel/guideline/)*The Guide to Eco Mark Usage shall be followed for any cases not listed above.
(https://www.ecomark.jp/office/guideline/guide/)

January 1, 2016

Established (Version1.0)

March 1, 2018
April 1, 2019
March 1, 2021
April 1, 2022
December 15, 2022
December 31, 2027

Revised (Version1.1)
Revised (5.(3) Mark indication)
Extension of expiration
Revised (Terminology, Table2, Version1.2)
Revised (4.(3) Version1.3)
Expiration date

The Certification Criteria for the Product Category will be revised when necessary.

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