Denman Island Well Depths & Groundwater Data (50 Wells)

Bottom Line Up Front

In Denman Island the median well is 123 feet deep and draws from Unknown bedrock, which supplies 476% 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: standard regional mineral profile. Local sampling should confirm the unresolved formation profile.

Modelled Well Depth

123 FT

Median for this area. Typical range 64–183 ft.

Est. Completion Cost

$11,248 CAD

$91/ft effective rate (includes fixed $1,900 mobilization & pump installation).

Water Hardness

325 MG/L

Very Hard. Standard regional mineral profile.

Pump class at this depth: 3/4 HP submersible, 4" casing

Adjust Target Depth

Drag the yellow indicator across the strata bar

Representative Geological StrataDrilling in: Unknown (0–400+ ft)

Unknown

40 ft (Shallow)Median 123 ft400 ft (Deep)

Well Statistics

Local measurements compared against British Columbia provincial benchmarks.

Hydrogeological Metric	Local Measurement	BC Provincial Benchmark
Total Registered Wells	50	1,420 avg per RM
Median Well Depth	123 ft	118 ft provincial median
Average Well Depth	124.5 ft	137.1 ft provincial average
Recorded Depth Range	11 – 400 ft	2 – 1,201 ft recorded range
Dominant Aquifer	Unknown	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 Denman Island

Shaded area is an approximate municipal outline for orientation only. Well records are aggregated across the entire Denman Island.

Depth Distribution

Most completed wells fall near the median depth of 123 ft.

0-50 ft

11.7% · 30

51-100 ft

26.6% · 68

101-150 ft

23% · 59

151-200 ft

19.5% · 50

201-250 ft

10.2% · 26

251-300 ft

5.1% · 13

301-400 ft

3.1% · 8

401+ ft

0.8% · 2

Median depth of 123 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.

Undifferentiated Aquifer 476%

238 wells Unclassified hydrogeological formation from legacy provincial drill records.

Water Quality Profile

Estimated hardness, mineral risks and treatment implications.

Total Hardness

Very Hard

325 MG/L

as CaCO3, Health Canada scale

Soft Moderate Hard Very hard

Present Mineral Risk

Scale build-up in kettles, heaters and fixtures
Dissolved iron and manganese staining
Elevated calcium and magnesium from Unknown bedrock

Test before purchasing treatment. Hardness varies well to well within the same quarter section.

Size custom treatment system for this water

Drilling Activity

Historical permit and construction activity by decade.

Pre-1970

4 wells · avg 94 ft

1970s

18 wells · avg 114 ft

1980s

41 wells · avg 119 ft

1990s

60 wells · avg 136 ft

2000s

32 wells · avg 176 ft

2010s

48 wells · avg 160 ft

2020s

15 wells · avg 175 ft

43% 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.

Affiliate & Editorial Disclosure: In accordance with the Competition Bureau of Canada and FTC guidelines, please note that links to filtration equipment and test kits are affiliate links. If you purchase through our links, Canada Well Data may earn a commission at no extra cost to you. Recommendations are generated independently from regional well records and Health Canada GCDWQ standards. Learn more about our affiliate and editorial disclosure policy.

Data-Driven Prescription

The treatment system this water needs

Generated from 325 mg/L hardness, unknown and a 123 ft median completion depth, for a four-person household. Adjust the assumptions in the builder.

Equipment Total

$2,039

Annual Consumables

$489

Softener Sizing

52,000 gr

01

Water Testing

Tap Score Canadian Essential Water Test

required

Nothing gets sized without numbers. Regional modelling puts hardness near 325 mg/L in unknown, 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

Shop this stage Budget option · $39 Premium option · $499

02

Whole-Home Softening

SpringWell SS1 48,000 Grain Whole-Home Softener

required

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

Shop this stage

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Frequently Asked Questions

Quick answers about water wells in Denman Island.

How deep are water wells in Denman Island?

The average water well in Denman Island, BC is 124.5 feet deep. Most wells range between 64.0 and 183.0 feet.

What is the primary aquifer in Denman Island?

The most common aquifer tapped by drillers in Denman Island is Unknown.