Customers are the most important visitors on our premises. They are not dependant on us, we are dependant on them. They are not an interruption of our work, they are the purpose of it. They are not outsiders to our business, they are part of it. We are not doing them a favour by serving them, they are doing us a favour by giving us an opportunity to do so.
Sewerage Services
The sewer network consists of sewer pipes of various sizes and materials and inspection manholes. The sewer line is 43.03 km long; the pipes are ranging from 100mm to 600mm diameter. The pipes used are made up of uPVC, Cast Iron and Concrete. There are 723 manholes for inspection and access for cleaning. The service coverage is about 16.68%, which is very low compared to clean water service level, which is 98%.
Sewer cleaning and blockage removal are done on routine basis. There are monthly average of 270 sewer cleaning and 250 sewer blockage removals occasions.
Sewage Treatment Ponds
There are five ponds working in parallel and series. The first pond is anaerobic, followed by two facultative ponds in parallel and finally two maturation ponds in series. Within the pond area there are two sludge ponds to treat sewage from cesspit emptiers. There are plans to construct one additional anaerobic pond and two additional maturation ponds to further polish the effluent.
The average daily flow into ponds is 6,350m 3/day. The effluent is ultimately discharged into Themi River which is mainly used for irrigation purposes downstream. Waste water sampling and analysis for monitoring of the ponds performance is done on weekly basis.
Our Contacts
Arusha Urban Water Supply and Sewerage Authority – AUWSA
Tel.: +255 (0)27-2504163
Fax: +255 (0)27-2504163
e-mail: auwsa@auwsa.or.tz
