Welcome to IWS

Our Clients

County of Oxford - Woodstock
Additional Groundwater Supplies - 2009
Potential sites for additional groundwater supplies for the City of Woodstock were identified in a previous study by IWC Ltd. The site of TW 1/80 was selected to proceed with further investigation. IWS Ltd. was selected to drill a pilot hole at this site and then to construct, develop and test a large diameter test production well. The pilot hole is now completed and we are currently in the well design phase

County of Norfolk - Delhi
Class EA and Test Drilling - 2008/2009
Class EA is being undertaken with a local consultant and is aimed at developing additional water supply for Delhi. As part of this, IWS Ltd. is conducting test drilling to identify a potential additional well site. One test well is completed and a second is in progress

The City of Greater Sudbury - Valley East
Additional Water Supply Investigation - 2008/2009
This program consists of test drilling, test production well construction and pump tests of sites identified by others. The program is still in progress.

Town of New Tecumseth - Tottenham
Development of a Replacement Well - 2008/2009
Replacement of an older small diameter well was selected as the means to upgrade and increase the water supply capacity for Tottenham. As part of this project, IWS Ltd. undertook the drilling of several pilot holes and drilled, constructed and tested new Well 6A. The well achieved the target capacity requirement.

County of Brant - Paris - Bethel Road Area
Groundwater Investigation and Development of Well Supplies - 2007 - 2009 (in-progress)
An exploratory test drilling program was developed and conducted in the Bethel Road area to explore for conditions suitable to develop the target water supply capacity. The investigation were successful in locating two sites. One large diameter test production well was successfully constructed, developed and tested and work on a second test production well is underway.

City of Barrie
Construction and Testing of Boulton Court Well No. 19 - 2007/2008
Following completion of the Class EA in 2005, Well No. 19 was drilled, constructed and tested at the site of TW 6/99. The well was successfully developed and tested at the target capacity of 91 L/s (1200 IGM). A fully documented Well Construction and Testing Report was completed and submitted in support of an amended Permit To Take Water (PTTW). The amended PTTW was approved by MOE.

County of Brant
Groundwater Study - Paris - Desktop - 2006
This groundwater study involved a review of previous investigations and studies to consolidate the hydrogeological conditions and to identify potential areas where additional groundwater supplies may be available. The study identified a number of areas for investigation and included a recommended program and budgets.

Regional Municipality of York - Schomberg
Class EA, Test Drilling, Construction and Testing of Well 4 - 2005 - 2007
This project was conducted with MacViro/Genivar and involved a Class EA to develop additional groundwater supply for Schomberg. Following review of existing information, sites were selected for test drilling to identify a suitable site. Care was required, as above ground piezometric heads in the order of 10 metres were known. Test drilling identified a suitable site and Well No. 4 was successfully drilled, constructed, developed and tested to the target capacity. Above ground heads were also successfully controlled throughout the project.

Municipality of Arran-Elderslie - Village of Tara
Preliminary Groundwater Study - 2005, Groundwater Investigation - 2006 and Construction and Testing of Production Well 1/06 - May 2007
In order to address a water supply shortage in the Village of Tara, International Water Supply Ltd. Undertook a preliminary Groundwater Study to review the groundwater supply prospects in the area and identify target areas for investigation. Test drilling was conducted at the preferred site and identified conditions which appeared suitable to meet the target capacity of 7.6 L/s. A production well was constructed and tested at this site, which demonstrated a capacity of 9.8 L/s. This exceeds the target capacity and is considerably higher than the existing well supplies

County of Oxford - Norwich
Development of Additional Well Supplies - 2005
Project included the drilling and construction of an offset well to replace an existing old well, the retrofitting of another old well, followed by phased start-up, combined testing of both wells and then decommissioning of one well. Due to difficult bedrock aquifer conditions, this project included a pre-consultation with MOE staff hydrogeologists in order to confirm our approach, particularly with regards to the retrofit plan. The work program was successfully completed and reported, including conclusions and a number of specific recommendations.

City of Barrie
Additional Groundwater Supply Class Environmental Assessment Schedule “B” - 2005
Following a groundwater exploration program and review of well and aquifer performance data up to 2005, it was concluded that one or two additional wells with design yields of 76 to 130 L/s (1000 to 1700 IGM) each could be developed in the Barrie west area. The site of TW 6/99 was selected as the preferred location for a new well.

City of Barrie
Construction and Testing of Wells 17 and 18 - October 2002 and December 2004
Wells 17 and 18 were drilled, constructed and tested in accordance with the Class E.A. at sites identified from the 1999 Groundwater Investigation Program. Both wells are 400 x 600 mm diameter, double-cased gravel wells with completed depths of 105 and 106 m respectively. Both have design and tested capacities of 130 L/s (1,700 IGM) each, although combined operation is currently limited to 212 L/s (2,800 IGM) based on the Class E.A.

Regional Municipality of Halton
Wellfield Performance and Yield Assessment - Georgetown - Cedarvale - 2003 and
Construction and Testing of Wells 1A and 3A - 2003 and 2005
An assessment of the Peaking and Sustained Capacity of the Cedarvale Well Field was undertaken based on both long term monitoring data and a seven day pumping test of Cedarvale Wells No. 1, 2, 3 and 4A. Recommendations were provided regarding the individual well capacities and the combined well field capacity. Replacement wells were recommended for old wells No. 1 and 3. Following drilling of pilot test holes, offset replacement Wells 1A and 3A were constructed and tested in 2003 and 2005 with rated capacities of 45.5 L/s (600 IGM) each.

County of Huron
Groundwater Assessment and Municipal Well Head Source Protection Study - June 2003
This multi-component study involves regional and local aquifer characterization, intrinsic susceptibility indexing and vulnerability mapping, groundwater use assessment, contaminant source inventory, groundwater flow modelling and delineation of municipal well capture zones. From these studies components on overall groundwater management and protection plan is being developed, which will include wellhead protection measures. The project includes public participation and a pilot project to try and implement the management strategies.

The project is being undertaken by International Water Consultants Ltd. as the lead hydrogeological firm, together with B. M. Ross and Associates and Waterloo Numerical Modelling Corp. B. M. Ross provides local water supply engineering and planning expertise, and serve as project managers, and Waterloo Numerical Modelling Corp. are responsible for groundwater flow modelling and data base management.

City of Barrie
Well and Aquifer Performance Assessment for System Permit Renewal - April 2003
Study reviewed the hydrogeologic setting, aquifer and well performances and assessed the safe continuous and peaking yields from the Barrie Aquifer System. The study was based on operational and monitoring data provided by the City and pervious groundwater resource assessments and performances.

The study report supported the renewal of a System Water Taking Permit for Barrie.

Town of St. Marys, Perth County
Groundwater Investigation - April 2003
A groundwater investigation program was undertaken to identify sites with potential for development of high capacity municipal wells. The investigation was conducted at 3 sites and included drilling and construction of test wells, aquifer testing and water quality analyses. Following completion the sites were rated and a preferred site identified for additional investigations.

Town of St. Marys, Perth County,
Hydrogeologic Investigation - July 2002
The objectives of this detailed investigation were to; characterize the hydrogeology, describe surface water features, assess the physical condition of the municipal wells, evaluate the source groundwater quality, determine if the well supplies were under the direct influence of surface water and if so, assess whether there was effective in-situ filtration to ensure disinfection processes would not be compromised. The work program included an extensive field component, including installation of monitoring well, well field pumping tests and detailed investigation of the municipal wells.

A component of the work program included the delineation of the municipal well capture zones in order to defined Wellhead Protection areas. This was done using simplified
2-D groundwater modelling based on aquifer characterizations from area pumping tests results.

This work was undertaken by International Water Consultants Ltd. with B. M. Ross and Associates servicing as project managers on behalf of the Town.

Regional Municipality of Halton
Groundwater Investigation to Identify Standby Well Site - Acton - Prospect Park - 2001
Construction and Testing of Standby Well No. 2 - 2003
A groundwater investigation program was undertaken to locate the site for a standby well site in Prospect Park, Acton. The investigation consisted of drilling five test holes and conducting short duration pumping tests, and water quality testing. Based on these results, a preferred location was identified for the standby well.

Standby Well No. 2 was subsequently constructed and tested in the fall of 2003. The well was successfully developed to produce up to the design capacity of 53 L/s (700 IGM) with excellent demonstrated performance.

Regional Municipality of Halton
Groundwater Investigation and Testing - Georgetown - 6 th Line Site - April 2001
This investigation program included drilling and construction of a large diameter test well, installation of 5 multi-level observation wells, and 6 mini-piezometers in area streams, ponds and wetlands, conducting an area domestic well survey, and undertaking a 7 day pumping test, followed by 2 days of recovery. Water levels during the test were measured in a monitoring network consisting of 15 monitoring wells, 6 mini-piezometers, and 24 domestic wells. The data collected was analysed and illustrated using a series of maps and graphs. The report identified the aquifer characteristics, observed interference and impacts from the test, and estimated the long term sustainable yield and associated predicted impacts. Some additional investigations were recommended to confirm the recharge characteristics to the semi-confined, channel type aquifer.

Woodstock Public Utilities Commission
Report on Thornton and Tabor Well Systems and Well Field Performance - March 2000
Report describes the hydrogeologic setting, aquifer characteristics, assesses well and aquifer performance, and provides an assessment of both peaking and average annual sustainable pumping rates.

Regional Municipality of Sudbury
Groundwater Investigation - Blezard Valley - Phase 1 to 4 - 2000
A groundwater investigation program involving exploratory test drilling, soil sampling, geophysical logging, and pump testing was undertaken to locate an additional well site suitable for development of a high capacity municipal well. A potentially suitable site was identified and recommended for additional testing.

Barrie Public Utilities Commission
Groundwater Investigation - Barrie West Area - 1999
This program included exploratory test drilling, geophysical logging, and pump testing at selected sites in the west part of Barrie. The investigation program identified 3 sites suitable for development of high capacity municipal wells with yields in the range of 76 to 106 L/s (1000 to 1400 IGM). Based on predicted performance it was concluded that aquifer conditions would support development of two of the three well sites.