Crystal Project Douglas Water Treatment Plant (WTP), Isle of Man
Key Data:
Project elements
New treatment works, raw water supply and treated water outlet
Plant type
3-stage DAF process
Area supplied
Douglas, Onchan, Braddan and the south of the island
Production capacity
37M 1/day
Average demand
Winter
26M/l day
Summer
35M/l day
Mains
66km large-diameter raw water; 1,200km treated water
Project costs
Supply Extent
31,000 connections over 250 square miles
Anticipated per capita consumption
2016
150 l/day
2021
185 l/day
Sulby WTP
£12.3 Million
Project Timeline:
Tynwald approve funding
June 1999
Planning approval
October 2004
Contract awarded
27 May 2005
Scheduled duration
33 months
Work commenced (Douglas WTP)
June 2005
Sulby works connected into supply
September 2005
Sulby works completed
October 2005
Raw water main contract awarded
October 2005
Raw water main construction began
January 2006
Treated water pipeline work commenced
June 2006
Treated water pipeline completed
August 2006
WTP concrete poured
August 2006
Raw water main completion
December 2006
Douglas WTP (construction and installation) completed
October 2007
Commissioning period
January/ February 2008
Glencrutchery WTP decommissioning began
February 2008
Official opening
2nd May 2008
Key Players:
Client
Isle of Man Water Authority
Main contractor
Earth Tech Engineering
Telemetry and PLCs
Mitsubishi Electric
Main sub-contractor
Lagan Construction
Treated water pipeline
Mann Construction
Treated water pipeline partner
Manx Gas
Excavation
JCK
Raw water main
Island Drainage & Groundwork
