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Water Authority of Fiji

Water Authority of Fiji. Brief Risk Assessment 10 th PWWA Conference – Samoa 9 th August, 2017. Contents. WAF Background Risk Assessment Outcomes Heavy Rain Tropical Cyclones TC Winston Facts Prolonged Drought Rise In Sea Level Risk Management Actions. Brief B ackground on WAF.

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Water Authority of Fiji

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  1. Water Authority of Fiji Brief Risk Assessment 10th PWWA Conference – Samoa 9th August, 2017

  2. Contents • WAF Background • Risk Assessment Outcomes • Heavy Rain • Tropical Cyclones • TC Winston Facts • Prolonged Drought • Rise In Sea Level • Risk Management Actions

  3. BriefBackground on WAF • Established in 2010 as a Government Statutory Authority • Areas of Responsibility • 110 islands inhabited out of 332 • 18,274 square kilometres • Provision of services to non-commercial/non-revenue generating communities as • part of the Government of Fiji’s social obligations. • Profile • WAF draws water from surface sources (rivers - 66%) and groundwater sources (springs-3% and boreholes-31%). • Water Usage (NRW 30% ;Residential 43%;Commercial 17.8%) • Approx. 4,668km of water and wastewater pipes laid • 154,809 Water meter connections • 29,215 Waste Water Connections • Approx.2,531 rural/village schemes (unmetered) • Production of 120,000 mega litres p/annum • Transportation of 24,000 mega litres of wastewater • 44 Water Treatment Facilities • 11 Waste Water Treatment Facility

  4. Brief background on WAF • Key Performance • Annual Energy Bill is $12.75 M (USD ) • Intermittent Areas reduced from 68 (2013) to 10 • NRW reduced from 51.7% (2013) to 39.2% • Approx. $0.9M USD savings for every 1% reduced ($11.25M USD Savings ) • Human Resource is around 1190 (ceiling 1226) permanent staff • Training Budget Value around $0.50 M (USD) • Training days average above 5 TD per staff • Staff Turnover averages 5.6% annually

  5. Risk Assessment Outcomes Majority of the Water Authority of Fijis Climate Change Risks is associated with its infrastructure with the following Climatic Events identified key influences in WAFs Climate Change Adaptation approach: 1. Heavy Rainfall – Concentrated downpour over a shorter period • Flash Flooding • Soil Erosion • Damage to Critical Infrastructure • Loss of Service • Increased Opex Cost • Increased Treatment Cost • Unplanned Water Carting Cost (Loss of Revenue) • Straining of Workforce • Bailing of Flooded Wastewater Pump Stations • Unplanned Capex Investments • Implementation of Temporary measures re-diverts funding meant for other vital planned works. • Inundation of Wastewater Assets leads to wastewater discharge in to the environment • Health Hazard • Breach of the Environmental Management Act 2005

  6. Risk Assessment Outcomes 2. Tropical Cyclone – Category 3 to 4 (Cat 5 as a 1:938 year Event) • Storm Surge • Flash Flooding • Damaging Wind Speeds • Damage to Critical Infrastructure (Including SCADA Monitoring Systems) • Loss of Service • Increased Opex Cost • Increased Treatment Cost • Unplanned Water Carting Cost (Loss of Revenue) • Straining of Workforce • Inundation of WAFs Water and Wastewater Issues • Unplanned Capex Investment • Implementation of Temporary measures re-diverts funding meant for other vital planned works. • Restricted Access • Loss of Power

  7. TC Winston • FACTS • Category 5 TC • Wind Speed ranged from 230 – 285 kmph • Fiji was in state of emergency for 60 days after TCW • IMPACT ON FIJI ECONOMY • 44 people were killed • Around 40,000 homes were destroyed • Approx. 350,000 people were affected (40% of population) • $1.4 Billion (USD) Total cost of damages to Fiji • IMPACT ON WATER AUTHORITY OF FIJI • $7.5M (USD) total cost of restoration works for WAF • 532 registered villages water systems were restored by WAF • Damages to pipes, quarters, offices, reservoirs, WTP,WWTP

  8. Risk Assessment Outcomes 3. Prolonged Drought • Disruption of Service • Increased Opex Cost • Water Carting Cost (Loss of Revenue) • Unplanned Capex Investment • Implementation of Temporary measures re-diverts funding meant for other vital planned works. • Water Rationing 4. Rise in Sea Level • Salt Water Infiltration into existing boreholes • Shorten lifespan of assets • Disruption of Services • Unplanned Capex Investment • Implementation of Temporary measures re-diverts funding meant for other vital planned works. Based on historical experiences with damages caused, disruption of service levels, recovery turn around time, environmental impact, Short, Medium and Long Term Consequences

  9. Risk Management

  10. Risk Management Water Champions Building Temporary Weir Mobile Desalination & Treatment Plants

  11. Risk Management Mobile Desalination Plant

  12. Major Events – Water Main Trunk line

  13. Major Events – Sewer Main Trunk line

  14. Major Events – TC Winston

  15. Sea Level Rise

  16. Q & A TIME!

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