St-Lin-Laurentides Water Well Depth & Hydrogeology
Regional groundwater summary • GWDrill Historical Log Extraction
Bottom Line Up Front
In St-Lin-Laurentides the median well is 126 feet deep and draws from Sand & Gravel Drift bedrock, which supplies 77.7% of wells here. Water is very hard at about 325 mg/L, so a softener is standard equipment. Rotary drilling is routine and 94% of wells serve ordinary household use. Treatment emphasis: sediment turbidity, localized iron/manganese. Unconsolidated sediments demand particulate intrusion monitoring.
Modelled Well Depth
126 FT
Median for this area. Typical range 100–300 ft.
Est. Completion Cost
$11,476 CAD
$91/ft effective rate (includes fixed $1,900 mobilization & pump installation).
Water Hardness
325 MG/L
Very Hard. Sediment turbidity, localized iron/manganese.
Pump class at this depth: 3/4 HP submersible, 4" casing
Adjust Target Depth
Drag the yellow indicator across the strata bar
Well Statistics
Local measurements compared against Quebec provincial benchmarks.
| Hydrogeological Metric | Local Measurement | QC Provincial Benchmark |
|---|---|---|
| Total Registered Wells | 157 | 1,420 avg per RM |
| Median Well Depth | 126 ft | 118 ft provincial median |
| Average Well Depth | 190.9 ft | 137.1 ft provincial average |
| Recorded Depth Range | 14 – 600 ft | 2 – 1,201 ft recorded range |
| Dominant Aquifer | Sand & Gravel Drift | Mixed glacial till province-wide |
| Estimated Water Hardness | 325 mg/L — Very Hard | 210 mg/L provincial average |
| Est. Drilling Cost Range | $6,610 – $17,260 CAD | $110/ft plus mobilization |
| Domestic Household Use | 94% of wells | 88% province-wide |
Where This Report Applies
Approximate boundary of St-Lin-Laurentides
Shaded area is an approximate municipal outline for orientation only. Well records are aggregated across the entire St-Lin-Laurentides.
Depth Distribution
Most completed wells fall near the median depth of 126 ft.
Median depth of 126 ft falls inside the reported range. Deeper completions here usually mean higher mineral content but steadier year-round pressure.
Aquifer Composition
Bedrock and drift aquifers recorded by drillers in this area.
122 wells Shallow to intermediate glacial drift aquifer deposited in alluvial channels or outwash plains. Yields softer water but requires continuous sediment filtration and shallow bacterial monitoring.
19 wells Low-permeability clay-rich glacial deposits with localized sand lenses. Often slow recharge.
11 wells Major regional bedrock aquifer formed by Ordovician/Silurian dolomite. Known for reliable, high-volume yields with elevated mineral hardness and dissolved calcium/magnesium carbonates.
5 wells Unclassified hydrogeological formation from legacy provincial drill records.
Water Quality Profile
Estimated hardness, mineral risks and treatment implications.
Total Hardness
Very Hard325 MG/L
as CaCO3, Health Canada scale
Present Mineral Risk
- Scale build-up in kettles, heaters and fixtures
- Dissolved iron and manganese staining
- Elevated calcium and magnesium from Sand & Gravel Drift bedrock
Test before purchasing treatment. Hardness varies well to well within the same quarter section.
Size custom treatment system for this waterDrilling Activity
Historical permit and construction activity by decade.
0% of wells are over 30 years old. Steel casing installed before 1995 can lose integrity, so any older well should get a casing inspection and a bacterial test before you rely on it.
Data-Driven Prescription
The treatment system this water needs
Generated from 325 mg/L hardness, sand & gravel drift and a 126 ft median completion depth, for a four-person household. Adjust the assumptions in the builder.
Equipment Total
$3,337
Annual Consumables
$609
Softener Sizing
52,000 gr
Water Testing
Tap Score Canadian Essential Water Test
Nothing gets sized without numbers. Regional modelling puts hardness near 325 mg/L in sand & gravel drift, but your own well can sit well off that median.
- Sizing
- Accredited lab panel: hardness, iron, manganese, nitrate, arsenic, total coliform and E. coli
- Equipment
- $349 CAD
- Annual Consumables
- $349 CAD
Sediment Prefilter
SpringWell Whole-House Spin-Down Sediment Filter
Sand & Gravel Drift aquifers carry fine sand and turbidity that destroys softener resin and UV lamp clarity.
- Sizing
- Prefilter, 20 micron, ahead of all treatment
- Equipment
- $749 CAD
- Annual Consumables
- None
Whole-Home Softening
SpringWell SS1 48,000 Grain Whole-Home Softener
At 325 mg/L (very hard) a 4-person household loads roughly 5.7k grains of hardness per day onto the plumbing.
- Sizing
- 52,000 grain metered capacity — about a 7-day regeneration cycle with reserve
- Equipment
- $1,690 CAD
- Annual Consumables
- $140 CAD
UV Disinfection
iSpring UVF55FS 12 GPM Whole-House UV Disinfection System
Median completion depth of 126 ft in sand & gravel drift leaves this aquifer surface-influenced, which is where coliform hits come from.
- Sizing
- 12 GPM UV, installed last in the treatment train, downstream of all filtration
- Equipment
- $549 CAD
- Annual Consumables
- $120 CAD
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Frequently Asked Questions
Quick answers about water wells in St-Lin-Laurentides.
How deep are water wells in St-Lin-Laurentides?
The average water well in St-Lin-Laurentides, QC is 190.9 feet deep. Most wells range between 100.1 and 300.2 feet.
What is the primary aquifer in St-Lin-Laurentides?
The most common aquifer tapped by drillers in St-Lin-Laurentides is Sand & Gravel Drift.