Hydrogeological requirements are set provincially but applied locally. Each page below explains what the municipality, region and conservation authority ask for, what the provincial well and permit records show for that place, and the typical cost range for the studies most often needed there. Costs are indicative ranges based on typical scopes, not local prices.
Greater Toronto and Hamilton Area
City studies centre on foundation drainage, construction dewatering and sewer discharge under City and Regional by-laws, while the Oak Ridges Moraine, the Greenbelt and private wells shape studies in the northern and rural municipalities.
- Hydrogeological study Toronto
Foundation drainage limits, construction dewatering and sewer discharge permits for deep sites. - Hydrogeological study Mississauga
City terms of reference, three-month monitoring, storm sewer testing and Peel's sanitary sewer ban. - Hydrogeological study Brampton
City terms of reference with set monitoring well depth and duration, and Peel sewer rules. - Hydrogeological study Caledon
Oak Ridges Moraine and Greenbelt rules, Region of Peel wellhead protection and rural lots on wells. - Hydrogeological study Vaughan
York Region terms of reference and City and Region approvals for construction and permanent dewatering. - Hydrogeological study Richmond Hill
The City's own minor and major hydrogeological checklists, the Urban MESP and the Oak Ridges Moraine. - Hydrogeological study Markham
No groundwater to sanitary sewers, City-approved dewatering discharge and York Region terms of reference. - Hydrogeological study King Township
Oak Ridges Moraine, deep village aquifers in Schomberg, Nobleton and King City, and private wells. - Hydrogeological study Whitchurch-Stouffville
Oak Ridges Moraine, site alteration and fill permits for former pits, and Stouffville and Ballantrae wells. - Hydrogeological study East Gwillimbury
Lake Simcoe Protection Plan water balance, LSRCA recharge offsetting fees and York Region wells. - Hydrogeological study Milton
Halton private servicing guidelines, nitrate in the municipal groundwater supply and escarpment land. - Hydrogeological study Halton Hills
Georgetown and Acton municipal well fields, Halton private servicing guidelines and escarpment land. - Hydrogeological study Hamilton
No permanent groundwater discharge to sewers, set monitoring well rules and rural private services guidelines. - Hydrogeological study Clarington
Durham sewer use and OPSS 518 dewatering rules, Orono's shallow wells and the Oak Ridges Moraine.
Central Ontario
Municipal terms of reference and Lake Simcoe water balance rules set the scope of many studies around Barrie, and further north lake setbacks and private wells in bedrock take over.
- Hydrogeological study Barrie
City terms of reference, deep drilling approval over the supply aquifer and infiltration screening. - Hydrogeological study Innisfil
The Town and InnServices 2025 terms of reference, an 18-month validity rule and shallow groundwater. - Hydrogeological study Bradford West Gwillimbury
The Town's 2025 terms of reference with Lake Simcoe phosphorus and water balance requirements. - Hydrogeological study Oro-Medonte
Official Plan rules for unserviced lots and infill severances, recharge areas and WHPA-Q2. - Hydrogeological study Clearview
Township terms of reference, Stayner water capacity limits and groundwater-supplied communities, with Collingwood. - Hydrogeological study Muskoka
Lake system health setbacks and phosphorus, private servicing triggers and at-capacity lake trout lakes. - Hydrogeological study Kawartha Lakes
Official Plan lot and servicing rules, small municipal well systems and areas with no conservation authority. - Hydrogeological study Peterborough
Official Plan hydrogeological assessments, the Otonabee River intake zones and sewer by-law limits on dewatering.
Eastern Ontario
Rural lots on private wells and septic systems, tested under D-5-4 and D-5-5, are a common reason for a study, with wells often in rock and intake protection near the Bay of Quinte.
- Hydrogeological study Ottawa
City Hydrogeological and Terrain Analysis Guidelines for rural lots, and heavy construction dewatering. - Hydrogeological study Belleville
Bay of Quinte intake protection zones, the Point Anne well and rural wells in bedrock. - Hydrogeological study Prince Edward County
Severances on private wells and septic in bedrock, and the Picton, Wellington and Ameliasburgh intakes.
Southwestern Ontario
These communities drink groundwater from municipal wells, so source protection screening and water quantity limits, such as the Mannheim capacity constraint and Centre Wellington’s Tier 3 risk, shape many studies.
- Hydrogeological study Guelph
A groundwater-supplied city: source protection screening, risk management plans and geothermal limits. - Hydrogeological study Kitchener
Region of Waterloo source protection and Section 59 notices, Mannheim water capacity and City discharge permits. - Hydrogeological study Cambridge
Bedrock municipal wellfields with known solvent and salt issues, and Region of Waterloo source protection. - Hydrogeological study Centre Wellington
Elora and Fergus bedrock wells, Tier 3 water quantity risk and Wellington source water screening, with Erin.