Iringa:Iringa Urban Water Supply Phase II
Disciplines
- Water Supply
Companies
Dorsch International Consultants
Client
Iringa Urban Water Supply and Sewerage Authority (IRUWASA)
Duration
From 2006 to 2013Project Activities
The capital works comprised:
- A new raw water intake
- The extension and upgrading of the water treatment plant at Ndiuka (sand trap, dosing station, flocculators, dosing station, sludge drying beds, rapid sand filters, ancillary works, attendance quarters)
- The upgrading of the existing spring at Kitwiru
- A new pumping station incl. 2500 m³ water balance tank
- Booster pump station incl. 2900 m³ clear water balance tank
- The extension of the supply network by 184 km of distribution lines, 5 water kiosks, network zoning
- The extension of the sewerage system by 4 km of lateral sewers
- The construction of 310 sewerage house connections
- The refurbishment of the wastewater treatment plant
- The construction of a new office building
- The supply of equipment (5000 water meters, 30 bulk water meters, vehicles, leak detection and laboratory equipment, billing and accounting equipment, computers, software, etc.)
- Capacity building (technical and commercial operations to increase efficiency and revenues).
The existing Iringa WWTP was extended from 17,000 to 60,000 PE and the wet weather flow increased from 1,772 to 6,255 m3/d.
The following structures were entirely newly designed and constructed:
- New screens and Parshall flume
- 4 new wetlands with a total surface of 4,000 m2.
- The following extension measures were conducted:
- Increasing the volume of the anaerobic ponds by increasing the depth of the ponds from 2.5 to 4.5 meters
- Increasing the number of the maturation ponds from 1 to 3 ponds
Contact
Dorsch International Consultants GmbH
München (Headquarters)
80687 München
Germany
Phone: +49 89 5797-0
Fax: +49 89 5797-800
E-Mail: info@dorsch.de
Description
The project supported Iringa Urban Water Supply and Sewerage Authority in contributing to poverty reduction by improving access to equitable and affordable safe drinking water and to improve wastewater collection and discharge in Iringa Town for 145,000 inhabitants at the design horizon of 2020. The project consequently improved the health and reduced the number of deaths and illnesses from unsafe water, unsafe sanitation and lack of hygiene. The project also covered capacity-building support in water- and sanitation-related activities to ensure sustainability and efficiency in operations.
The project focused on:
- The implementation of investment measures with high quality standards and in compliance with a strict overall time schedule and budget, and
- Improved operation efficiency and customer satisfaction, with a view to increasing cost recovery and project sustainability.