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GSOtherTanzania, United Republic ofGeneral Methodologyv2.0

GS 12030 VPA 1 Safe Water Project in Kigoma and Dodoma (Tanzania)

GS-4195 ↗ · current registry ID: GS12031

#25of 28 in Water#8of 8 in Tanzania#411of 426 in Gold Standard (GS)

3.7/ 10
Integrity
4.5
Transparency
3.0
Claim Safety
4.0
Documentation
2.5

Audit Analysis

This Gold Standard safe water project in Tanzania has VVB-confirmed additionality and positive safeguards (FPIC, grievance mechanism), but is severely undermined by over 40 material findings including an incorrect baseline calculation, a significant FNRB discrepancy between documents, and no verified ERR figure. The documentation quality is poor, with multiple contradictions across the project file and low extraction confidence, raising substantial over-crediting and data-reliability concerns.

Red Flags

  • The verification report lists 'Calculation of total baseline estimate incorrect' as a material finding, directly undermining the validity of the claimed 72,398 tCO2e ERR
  • FNRB value contradicts between documents: 91.89 in the verification report vs 59.4 in the monitoring report — a 55% difference that materially affects the emission factor applied
  • No verified ERR figure is available in the extracted record; only the claimed figure (72,398) from the monitoring report exists
  • No buffer pool percentage is stated in any document, leaving permanence risk unquantified
  • Over 40 material findings and 40+ corrective actions were raised by the VVB, indicating systemic documentation and calculation errors

Credit Vintages

IssuedRetiredAvailable
2022
7,35407,354
2023
40,944040,944
2024
24,100024,100
Total72,398072,398

Risk Indicators

Additionality

VVB-confirmed combined test

Permanence

No buffer pool stated; no reversal events but permanence unq

Leakage

0% deduction, 'deemed negligible' vs 'quantified' contradict

Baseline

Project-specific; calculation error flagged; FNRB discrepanc

Safeguards

FPIC, grievance mechanism, benefit sharing documented

Double-claim

CORSIA and CCP status not stated in any document

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Analysis ProvenanceScored2026-08-26General Methodology v2.0

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