2013年-世界发展银行全球_Nicaragua___The_Cost_of_Inadequate_Sanitation_28页_8mb

Summary of the Economics of Sanitation Initiative in Nicaragua

Core Content

The Economics of Sanitation Initiative (ESI) report provides an analysis of the economic and social impacts of inadequate sanitation in Nicaragua. It highlights the significant costs associated with poor sanitation and the benefits that could be gained through improved infrastructure and hygiene practices.

Main Points

• Sanitation Coverage: In 2009, 52% of Nicaragua's population had access to improved sanitation, which is below the regional average in Latin America and the Caribbean. This coverage has increased from 43% in 1990 to 52% in 2008, but it still falls short of the 72% target set for 2015.

• Population Statistics:

  • Total population: 5.74 million
  • Rural population: 41.7%
  • Urban population: 58.3%
  • Annual population growth: 1.3%
  • Population under 5 years: 31.9%
  • Mortality rate under 5: 11.8%
  • Poverty rate: 50.5%
  • Daily income under US$ 2: 15.8%

• Economic Impact (2009):

  • Total economic loss due to inadequate sanitation: C$1,912 million (US$95 million)
  • Health: 75% of total losses, amounting to C$1,430 million (US$70.3 million) per year
  • Water Resources: 3% of total losses, C$59 million (US$2.9 million) per year
  • Tourism: 13% of total losses, C$245 million (US$12.1 million) per year
  • Time Wasted: 9% of total losses, C$177 million (US$8.7 million) per year

• Health Impacts:

  • Over 4.6 million disease episodes and almost 500 premature deaths occur annually due to poor sanitation and hygiene.
  • The cost per capita varies from C$160 in less poor areas to over C$400 in more impoverished regions, particularly in the Region Autonoma del Atlantico Norte.

• Water Resource Impacts:

  • Poor sanitation contributes to water pollution, increasing the cost of water treatment.
  • The annual cost of treating water is C$110 million (US$5.4 million), with 75% of this cost avoidable if sanitation improved.
  • The Nicaraguan Company of Aqueducts and Sewers (ENACAL) reported treating around 320 million cubic meters of water in 2010.

• Tourism Impacts:

  • Tourism is a major source of revenue, contributing C$7,000 million (US$346 million) annually.
  • Sanitation and hygiene conditions significantly influence tourist choices and spending.
  • The average tourism income per arrival was US$322 in 2008, and Nicaragua has the lowest sanitation coverage in the region.

• Non-Assessed Impacts on Welfare:

  • Several impacts, such as health problems, lack of adequate bathrooms, and reduced land value, were not quantified but are known to affect people's behavior and general welfare.
  • These unassessed impacts could increase the total economic loss significantly, potentially exceeding C$1,912 million.

• Economic Significance:

  • The economic losses represent 1.5% of GDP in 2009.
  • Improving sanitation could save C$1,600 million and reduce public health and water treatment costs.

Key Recommendations

1. Prioritize Sanitation Investments:

   • Focus on improving sanitation in both poor urban and rural areas.
   • Address open-air defecation to reduce disease incidence.
   • Support community-based initiatives in areas with low house ownership, where individual improvements are not feasible.

2. Promote Hygiene Practices:

   • Implement handwashing campaigns, as they are a low-cost, high-impact intervention.
   • Handwashing reduces morbidity and saves public health costs.

3. Strengthen Monitoring and Evaluation:

   • Establish a systematic and practical structure for qualitative water surveillance.
   • Evaluate health risks and monitor water quality periodically.
   • Create an evaluation system to identify high-risk areas and improve public health conditions.

4. Policy Formulation and Advocacy:

   • Use the findings to advocate for national policies and improve program design.
   • Ensure that the selection of sanitation programs is based on a thorough understanding of the costs and benefits of each option.
   • Encourage public-private partnerships and community participation to enhance funding and implementation.

Conclusion

The lack of sanitation in Nicaragua results in substantial economic and social losses, particularly affecting the poorest and most vulnerable populations. The ESI report underscores the need for increased investment in sanitation infrastructure and hygiene promotion to achieve sustainable development and reduce the burden on public health and the economy.