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Manitoba • 6,443 Registered Wells

RM of St. Andrews Water Well Depth & Hydrogeology

Regional groundwater summary • GWDrill Historical Log Extraction

Bottom Line Up Front

In RM of St. Andrews, the median completed well is 100 ft deep.

A published hardness range for this place and aquifer is under 60 to above 180 mg/L as CaCO₃. That is a regional estimate, not a test of your well. Source: Estimate based on Health Canada hardness bands.

Most production draws from LIMESTONE OR DOLOMITE (about 96% of local wells).

These municipal aggregates support planning only — they do not replace an accredited laboratory potability test for your own well.

Interactive Well Depth & Geological Stratigraphy (From Local Driller Logs)

Drag the indicator line or tap a geological stratum below to read the recorded depth range

Drilling in: Carbonate Bedrock (Limestone / Dolomite) (30–330 ft)Primary Bedrock Aquifer

Modelled Depth

100 FT

Area median

Drilling cost

$7,000–$15,000

Estimate

Published hardness

under 60 to above 180 mg/L as CaCO₃

0 ft (Surface)Median 100 ft500 ft (Deep)
Glacial Lacustrine Clay & Silt
Glacial Drift Silt & Till
Carbonate Bedrock (Limestone / Dolomite)
Sedimentary Shale Formation
From local driller logs:

From local driller logs.

Well Statistics

Local measurements compared against Manitoba provincial benchmarks.

Total Registered Wells 6,443
Median Well Depth 100 ft
MB benchmark: 88 ft provincial median
Average Well Depth 113.4 ft
Recorded Depth Range 1 – 500 ft
Dominant Aquifer LIMESTONE OR DOLOMITE
Hardness under 60 to above 180 mg/L as CaCO₃ — Estimate. Estimate based on Health Canada hardness bands
Drilling cost $7,000–$15,000 — Estimate. Typical drilling prices in Canada, about $70–$150 per foot
Domestic Household Use 0% of wells

Where This Report Applies

Approximate boundary of RM of St. Andrews

Shaded area is an approximate municipal outline for orientation only. Well records are aggregated across the entire RM of St. Andrews.

Depth Distribution

Most completed wells fall near the median depth of 100 ft. Recorded depths cover 6,297 wells.

0–49 ft 3.3% · 209
49–98 ft 43.1% · 2,714
98–148 ft 36.4% · 2,295
148–197 ft 8.7% · 546
197–295 ft 7.4% · 468
295–394 ft 1% · 64
394–591 ft 0% · 1
591+ ft 0% · 0

Median depth of 100 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.

Carbonate Bedrock (Limestone / Dolomite) Primary Bedrock Aquifer
95.5%

6,156 of 6,443 Major regional bedrock aquifer formed by Ordovician/Silurian dolomite. Known for reliable, high-volume yields with elevated mineral hardness and dissolved calcium/magnesium carbonates.

Undifferentiated Aquifer Regional Formation
3.8%

242 of 6,443 Unclassified hydrogeological formation from legacy provincial drill records.

Sand & Gravel Aquifer Glacial Drift Aquifer
0.6%

38 of 6,443 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.

Sedimentary Shale Formation Fractured Shale Aquifer
0%

3 of 6,443 Fractured sedimentary shale formation (including Odanah / Pierre members). Characterized by high total dissolved solids (TDS) and potential sulfur/iron compounds.

Sandstone Bedrock Formation Basal Bedrock Aquifer
0%

2 of 6,443 Deep basal sandstone bedrock unit (including Winnipeg Formation). Supplies exceptionally stable yields; often exhibits moderate mineral hardness with silica-rich water.

Precambrian Crystalline Bedrock (Granite) Crystalline Bedrock Aquifer
0%

1 of 6,443 Crystalline Canadian Shield rock. Yields soft, slightly acidic water with minimal dissolved solids, relying on secondary fracture networks for groundwater storage.

Glacial Drift Silt & Till Protective Overburden
0%

1 of 6,443 Dense, low-permeability clay-rich glacial deposits with localized silt lenses. Serves as a natural confining barrier protecting deeper aquifers from surface contamination.

246 holes found no usable water. test holes, observation or monitoring wells, dewatering wells, decommissioned wells, dry holes, no-aquifer holes, and other non-supply wells filtered out of the headline

Water Quality Profile

A published hardness range, when one exists for this place and aquifer. Not a test of your well.

Measured nearby

Measured government tests within 25 km of RM of St. Andrews.

Soft (<60) Med (61–120) Hard (121–180) V. hard (>180)

USGS (2018) bands reprinted by Health Canada. A range can cross more than one band. This is not a sample.

What this is not

  • Not a laboratory result for a well on your property.
  • Not a reason to size a softener. Size equipment from a lab test.
  • Not a drilling quote. A cost line on this page is a national estimate, not a price for one well.

Health Canada has not set a maximum acceptable concentration for hardness. A wide published range can sit in more than one USGS band.

Drilling Activity

Historical permit and construction activity by decade.

Pre-1970 544 wells · avg 76 ft
1970s 1,434 wells · avg 95 ft
1980s 1,172 wells · avg 120 ft
1990s 891 wells · avg 136 ft
2000s 945 wells · avg 129 ft
2010s 622 wells · avg 128 ft
2020s 331 wells · avg 131 ft

61% of dated wells are over 30 years old (pre-1995). Steel casing installed before 1995 can lose integrity over time. Any older well should get a casing inspection and a certified bacterial test before reliance.

Treatment

Size treatment from a laboratory test

This page does not turn a hardness range or a well depth into an equipment total, a grain capacity, or a drilling price. Read the methodology, the filtration guide, and the products catalog.

Suggested system

Suggested system for RM of St. Andrews

1

Test kit

estimate, confirm with a lab test

A test of your own well comes before any equipment. Test for coliform bacteria.

Water testing
2

Iron and manganese filter

estimate, confirm with a lab test

An iron filter is worth considering because wells in this place draw from LIMESTONE OR DOLOMITE. This follows the aquifer type. Iron and manganese were not used from a monitoring-well test.

Iron and manganese guide
3

Water softener

estimate, confirm with a lab test

Some wells nearby test above 120 mg/L, a softener may help, confirm with a lab test. 68 wells test above 180 mg/L.

Hard-water guide
Local Contractors

Licensed Water Well Drillers Serving RM of St. Andrews

Because water wells in RM of St. Andrews average 100 ft into limestone or dolomite, contractors equipped with heavy rotary rigs and proper casing seals are recommended. Contact local drillers directly or request competitive bids.

Selkirk Drillers Ltd.

Yard: Selkirk, MB (9 km away)

Serves RM of St. Andrews
★ 4.6 (18 Google reviews)
Red River Carbonate Aquifers Domestic Drinking Wells Pump Diagnostics

Norwest Water Well Drilling Ltd.

Yard: St. Andrews, MB (14.6 km away)

Serves RM of St. Andrews
Confirm the contractor's provincial licence before you hire
Interlake Drilling High-Yield Domestic Geothermal Loops

Perimeter Drilling / Ed & Di Enterprises

Yard: St. Andrews, MB (18.6 km away)

Serves RM of St. Andrews
Confirm the contractor's provincial licence before you hire
Capital Region Residential Carbonate Bedrock Wells Well Decommissioning

Ford Drilling Ltd.

Yard: Matlock, MB (22.2 km away)

Serves RM of St. Andrews
★ 4.5 (4 Google reviews)
Interlake Limestone Bedrock Residential Wells Submersible Pumps

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Frequently Asked Questions

Quick answers about water wells in RM of St. Andrews.

What is the median well depth in RM of St. Andrews?

Among 6297 producing water wells with a recorded depth, the median is 100.0 ft (30.48 m).

Which aquifer is recorded most often in RM of St. Andrews?

The most frequently recorded producing aquifer is LIMESTONE OR DOLOMITE, on 6014 of 6443 wells with a producing aquifer name.

Adjacent Municipalities & Nearby Well Records

Explore neighbouring hydrogeological formations and compare drilling depths

Nearby communities