Regional groundwater summary • Ontario Historical Log Extraction
Bottom Line Up Front
In Stormont, Dundas and Glengarry, the median completed well is 80 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 (about 87% 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 & Modeled Typical Strata
Drag the indicator line or tap a stratum below to read the recorded depth range
Modelled Depth
80 FT
Area median
Drilling cost
$5,600–$12,000
Estimate
Published hardness
under 60 to above 180 mg/L as CaCO₃
Modeled typical strata — placeholder from median depth + aquifer type; not local driller logs.
Local measurements compared against Ontario provincial benchmarks.
| Hydrogeological Metric | From the registry or a cited study | ON Provincial Benchmark |
|---|---|---|
| Total Registered Wells | 17,601 | — |
| Median Well Depth | 80 ft | 103 ft provincial median |
| Average Well Depth | 89.3 ft | — |
| Dominant Aquifer | Limestone | — |
| Hardness | under 60 to above 180 mg/L as CaCO₃ — Estimate. Estimate based on Health Canada hardness bands | — |
| Drilling cost | $5,600–$12,000 — Estimate. Typical drilling prices in Canada, about $70–$150 per foot | — |
| Domestic Household Use | 84% of wells | — |
Approximate boundary of Stormont, Dundas and Glengarry
Shaded area is an approximate municipal outline for orientation only. Well records are aggregated across the entire Stormont, Dundas and Glengarry.
Most completed wells fall near the median depth of 80 ft. Recorded depths cover 17,549 wells.
Median depth of 80 ft falls inside the reported range. Deeper completions here usually mean higher mineral content but steadier year-round pressure.
Bedrock and drift aquifers recorded by drillers in this area. Recorded for 17,507 of these 17,601 wells.
15,376 of 17,601 Major regional bedrock aquifer formed by Ordovician/Silurian dolomite. Known for reliable, high-volume yields with elevated mineral hardness and dissolved calcium/magnesium carbonates.
1,089 of 17,601 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.
577 of 17,601 Fractured sedimentary shale formation (including Odanah / Pierre members). Characterized by high total dissolved solids (TDS) and potential sulfur/iron compounds.
349 of 17,601 Impermeable glaciolacustrine clay and silt deposits formed in ancient glacial lakes. Acts as an effective regional aquitard confining underlying aquifers.
106 of 17,601 Deep basal sandstone bedrock unit (including Winnipeg Formation). Supplies exceptionally stable yields; often exhibits moderate mineral hardness with silica-rich water.
10 of 17,601 Crystalline Canadian Shield rock. Yields soft, slightly acidic water with minimal dissolved solids, relying on secondary fracture networks for groundwater storage.
3,194 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
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 Stormont, Dundas and Glengarry.
USGS (2018) bands reprinted by Health Canada. A range can cross more than one band. This is not a sample.
What this is not
Health Canada has not set a maximum acceptable concentration for hardness. A wide published range can sit in more than one USGS band.
OSNABRUCK, STORMONT, DUNDAS AND GLENGARRY UNITED COUNTIES, 11.98 km away, in the wider area.
11 government lab tests, dated 2007–2022.
Hardness 310–566 mg/L as CaCO₃, median 390.
Worked out by wellwaterguide.ca from 11 government lab tests.
reported hardness, or calculated from measured calcium and magnesium when hardness was not reported
Provincial Groundwater Monitoring Network (PGMN): water chemistry and well locations Open Government Licence - Ontario
ROXBOROUGH, STORMONT, DUNDAS AND GLENGARRY UNITED COUNTIES, 12.17 km away, in the wider area.
19 government lab tests, dated 2003–2025.
Hardness 287–530 mg/L as CaCO₃, median 437.
Worked out by wellwaterguide.ca from 19 government lab tests.
reported hardness, or calculated from measured calcium and magnesium when hardness was not reported
Provincial Groundwater Monitoring Network (PGMN): water chemistry and well locations Open Government Licence - Ontario
ROXBOROUGH, STORMONT, DUNDAS AND GLENGARRY UNITED COUNTIES, 12.17 km away, in the wider area.
19 government lab tests, dated 2003–2025.
Hardness 115–820 mg/L as CaCO₃, median 190.
Worked out by wellwaterguide.ca from 19 government lab tests.
reported hardness, or calculated from measured calcium and magnesium when hardness was not reported
Provincial Groundwater Monitoring Network (PGMN): water chemistry and well locations Open Government Licence - Ontario
1 well tested, 25 mg/L as CaCO₃ (1 test).
8.6 km away, nearby.
Tests dated 2007.
These results are old (tested 2007).
Worked out by wellwaterguide.ca from 1 government lab test.
reported hardness, or calculated from measured calcium and magnesium when hardness was not reported
Provincial Groundwater Monitoring Network (PGMN): water chemistry and well locations Open Government Licence - Ontario
Historical permit and construction activity by decade.
68% 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
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
Test kit
estimate, confirm with a lab testA test of your own well comes before any equipment. Test for coliform bacteria.
Water testingIron and manganese filter
estimate, confirm with a lab testManganese above the aesthetic objective, consider an iron/manganese filter. One monitoring well near this place has median iron of 1.23 mg/L and median manganese of 0.0799 mg/L. Another has median manganese of 0.608 mg/L.
Iron and manganese guideWater softener
estimate, confirm with a lab testA softener is likely needed. The nearest monitoring well has a median hardness of 390 mg/L as CaCO₃.
Hard-water guideBecause water wells in Stormont, Dundas and Glengarry average 80 ft into limestone, contractors equipped with heavy rotary rigs and proper casing seals are recommended. Contact local drillers directly or request competitive bids.
Yard: Richmond, ON (69.7 km away)
Yard: Verona, ON (155 km away)
Yard: Fenelon Falls, ON (304.8 km away)
Yard: Barrie, ON (379.3 km away)
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Quick answers about water wells in Stormont, Dundas and Glengarry.
Among 17549 producing water wells with a recorded depth, the median is 79.7 ft (24.3 m).
Explore neighbouring hydrogeological formations and compare drilling depths