Dunbar-Southlands Water Hardness & Quality Report (2026)
Water Hardness
Source
reservoir
pH Level
7.3
neutral = 7.0
Lead
0.003 mg/L
✓ Below action level
TDS
83.6 mg/L
Est. Daily Cost
$0.12
energy & soap waste
Source: Health Canada Water Quality · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Dunbar-Southlands, your appliances are currently losing 6% efficiency due to mineral buildup.
| Appliance | In Dunbar-Southlands | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.2 yrs | 8.5 yrs | -4% |
| Washing Machine | 12 yrs | 12 yrs | — |
| Water Heater | 13.9 yrs | 15 yrs | -7% |
Regional Water Comparison
How Dunbar-Southlands compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Dunbar-Southlands, British Columbia | 43.5 mg/L | Low | 🟢 Soft |
| Arbutus Ridge, British Columbia | 59 mg/L | Medium | 🟢 Soft |
| West Point Grey, British Columbia | 16 mg/L | Low | 🟢 Soft |
| Kitsilano, British Columbia | 82 mg/L | Medium | 🟡 Moderately Hard |
| Kerrisdale, British Columbia | 90.5 mg/L | Medium | 🟡 Moderately Hard |
National Benchmark
How Dunbar-Southlands compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Dunbar-Southlands | 43.5 mg/L | 🟢 None |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Dunbar-Southlands's Water Unique?
Local geology and source profile
Dunbar-Southlands (a peaceful, affluent southwest Vancouver neighbourhood — one of Vancouver's most desirable family areas, centred on Dunbar Street between 16th and 41st Avenues and extending south to SW Marine Drive, known for its grand craftsman homes, excellent schools, the Pacific Spirit Regional Park, and the Southlands equestrian estate district) receives its drinking water through the City of Vancouver, purchasing bulk supply from Metro Vancouver (GVWD) — sourced from the protected Capilano, Seymour, and Coquitlam mountain watersheds. Water is treated at the Seymour-Capilano Filtration Plant using ozonation, biofiltration, UV disinfection, and chloramination, fully meeting the Guidelines for Canadian Drinking Water Quality (GCDWQ). Hardness in the Dunbar-Southlands distribution zone is 43.5 mg/L (2.5 gpg) — classified as soft by Health Canada.
Dunbar-Southlands' 43.5 mg/L is consistent with the broader southwest Vancouver distribution corridor (Riley Park 44.5 mg/L, Marpole 44.5 mg/L, South Granville 16.5 mg/L) — all sharing the fundamentally soft Coast Mountain granodiorite and gneiss watershed supply of Metro Vancouver. The Dunbar corridor's south Vancouver position in the transmission network produces the characteristic soft supply reflecting the extremely insoluble mountain source geology.
With 43.5 mg/L of hardness, Dunbar-Southlands homes are essentially scale-free — occasional kettle cleaning every three months is sufficient. Hot water tanks have an excellent operational lifespan. The City of Vancouver provides water quality information at vancouver.ca. Dunbar-Southlands' large stock of pre-1945 craftsman homes and character houses — among Vancouver's most treasured heritage residential properties — includes many properties where the City's lead service line programme and Health Canada precautionary guidance on older plumbing infrastructure are relevant.
Geology & Source: Supplied by City of Vancouver from Metro Vancouver (GVWD) mountain reservoir water — the Dunbar-Southlands southwest Vancouver distribution zone retains soft Coast Mountain character at 43.5 mg/L (2.5 gpg).