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AMS-III.AV — Low greenhouse gas emitting safe drinking water production systems

About this methodology

Projects provide water purification systems that reduce the need to boil drinking water using fossil fuels or non-renewable biomass. The method measures the associated emission reductions.

Issued by
CDM (UNFCCC) · issuer's site
Version
9.0 · source ·
Status
Active at CDM / UNFCCC · source ·
Climate outcome
Emission reductions
Activity
Drinking water
Official page
cdm.unfccc.int ·
Also used by projects of

How methodology v3 reads projects of this type

What CarbonMeld reads

  • shown

    Grid emission factor: the methodology sets rules for it in some cases. CarbonMeld reads it in the project's documents. CM-F-AMS-III-AV-GRID-EF

    Link
  • shown

    Fraction of non-renewable biomass (fNRB): the methodology sets rules for it in some cases (AMS-III.AV v09, p. 11). CarbonMeld reads it in the project's documents. CM-F-AMS-III-AV-FNRB

    Link

  • A confirmed investment analysis A-INVEST

    The documents show a project-level additionality test, the validation confirmed it, and it is an investment analysis (a numeric test of the project's finances with and without carbon revenue).

  • No usage monitoring (cookstoves, biogas, water treatment) Q-NO-USAGE-MONITORING

    Cookstoves, biogas and water treatment: the monitoring or verification reports that CarbonMeld read give no usage rate. For biogas and water treatment, the rule applies where the methodology asks for a usage survey or an operation survey. Where CarbonMeld read no monitoring or verification report, the rule does not apply. A usage check by the verifier counts as usage monitoring. Operation logs and the share of units still in operation count too. CarbonMeld applies this rule only where a check of the documents has confirmed its condition; without that check, the rule takes no points.

Figures set against the methodology's own values

  • fNRB above the official value, or an older default Q-FNRB-ABOVE

    CarbonMeld compares the fraction of non-renewable biomass (fNRB) with the official national value of the country. The rule applies to any project whose documents give an fNRB that CarbonMeld can compare with the official value. A project gets one fNRB deduction at most. Three sources of values get no deduction: TOOL33 version 03.0, A6.4-AMT-009, and a MoFuSS assessment whose stated year is 2024 or later.

    Above the official national value plus its 30% uncertainty.

Deductions that can apply

  • fNRB above the official value, or an older default Q-FNRB-OLD-DEFAULT

    CarbonMeld compares the fraction of non-renewable biomass (fNRB) with the official national value of the country. The rule applies to any project whose documents give an fNRB that CarbonMeld can compare with the official value. A project gets one fNRB deduction at most. Three sources of values get no deduction: TOOL33 version 03.0, A6.4-AMT-009, and a MoFuSS assessment whose stated year is 2024 or later.

    An older default value. This includes the TOOL33 values before version 03.0, the older national defaults and MoFuSS values whose stated year is before 2024. It also includes any other value that the documents give as a default. The CDM's fixed default of 0.3 is the exception. Only the two «above» cases can apply to it.

Set by the methodology or the programme, not assessed by our current method

  • not assessed

    Leakage: the methodology sets rules for it in some cases (AMS-III.AV v09, p. 8). Our current method does not assess it. CM-F-AMS-III-AV-LEAKAGE

    Link
  • not assessed

    Social safeguards and consent of communities (FPIC): any such rules come from the programme, not the methodology. Our current method does not assess it. CM-F-AMS-III-AV-SAFEGUARDS-FPIC

    Link

Not applicable to this type — never a gap in our current method

The criterion does not apply to this methodology. Our current method never counts it as a gap.

The general rules apply as well. Read the general rules.

The rules of methodology v2.2, as they were: the archived v2.2 page.

History and transitions

Its revision: VMR0015

Revision to AMS-III.AV.: Low greenhouse gas emitting safe drinking water production systems

source

All 9 versions

  • v09.0adopted 12 Jun 2025source

    Remove reference to TOOL30 and include reference to TOOL33.

  • v08.0adopted 12 Jun 2020source

    Update data and parameter tables.

  • v07.0adopted 28 Mar 2019source

    Improve requirements for demonstration of additionality.

  • v06.0adopted 31 Aug 2018source

    Update the eligible technologies as per the recommendations contained in the relevant guidelines published by the World Health Organization (WHO); Elaborate monitoring procedures for different types of technologies/measures; Clarify the …

  • v05.0adopted 24 Jul 2015source

    Provide more specific guidance in applying the methodology including the calculation of baseline emissions to enable a standardized approach; and Provide simplified and flexible monitoring procedures to reduce transaction costs without …

  • v04.0adopted 31 May 2013source

    Broadens the applicability of the methodology to water kiosks that treat water using one or more of the following technologies: chlorination, combined flocculant/disinfection powders and solar disinfection.

  • v03.0adopted 13 Sept 2012source

    Includes project technologies that comply with WHO’s Interim performance target on household water treatment or applicable national standards/guidelines.

  • v02.0adopted 15 Jul 2011source

    Includes guidance on the procedures for project equipment testing and monitoring provisions; Increases the threshold of rural or urban population with access to improved drinking source to 60 per cent; and Applies a cap of 5.5 litres per …

  • v01.0adopted 15 Apr 2011source

    Initial adoption.

Projects using AMS-III.AV

Browse 47 published projects using AMS-III.AV, listed alphabetically. There is no ranking for this methodology yet: it appears here automatically once 5 of its projects not in the pipeline or under validation are rated. Open a project to view its registry details and the analysis available for that project.

Which registries list projects under AMS-III.AV?

In CarbonMeld's data, AMS-III.AV projects are on 4 registries: Verra (17), CDM (15) and Gold Standard (14), and 1 more. Being listed on a registry is not the same as being registered: the «Registered» column counts the projects each registry shows as registered, and credits are issued only after each verification.

RegistryProjectsRegisteredProjects list
Verra (VCS)177See the list
CDM (UNFCCC)159See the list
Gold Standard (GS)1410See the list
Global Carbon Council (GCC)10See the list

Counts of project records in CarbonMeld's data, with or without a CarbonMeld analysis. «Registered» counts the records whose current registry status is «registered», as last read (13 November 2026); projects in a later status, such as awaiting verification approval, late to verify or completed, are not in that column.

9 of these projects have no number: additionality, quantification or both have no public grade of their type of project that applies to them yet. Their pages show the analysis.

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