Marlborough 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
88.5 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 Marlborough, your appliances are currently losing 6% efficiency due to mineral buildup.
| Appliance | In Marlborough | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 8.1 yrs | 8.5 yrs | -5% |
| Washing Machine | 11.9 yrs | 12 yrs | -1% |
| Water Heater | 13.8 yrs | 15 yrs | -8% |
Regional Water Comparison
How Marlborough compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Marlborough, British Columbia | 46 mg/L | Low | 🟢 Soft |
| Garden Village, British Columbia | 83 mg/L | Medium | 🟡 Moderately Hard |
| Metrotown, British Columbia | 66.5 mg/L | Medium | 🟡 Moderately Hard |
| South Slope, British Columbia | 70 mg/L | Medium | 🟡 Moderately Hard |
| Douglas-Gilpin, British Columbia | 30.5 mg/L | Low | 🟢 Soft |
National Benchmark
How Marlborough compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Marlborough | 46 mg/L | 🟢 None |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Marlborough's Water Unique?
Local geology and source profile
Marlborough's drinking water is supplied through the Metro Vancouver (GVWD) regional network — drawing from the Capilano, Seymour, and Coquitlam Lake mountain watersheds and distributed through the Burnaby–New Westminster transmission infrastructure. Water is treated and distributed fully meeting the Guidelines for Canadian Drinking Water Quality (GCDWQ). Hardness in the Marlborough sub-zone is 46 mg/L (2.7 gpg) — classified as soft by Health Canada, consistent with the Metro Vancouver soft mountain supply in the south Burnaby distribution corridor.
Marlborough (a residential neighbourhood in south Burnaby near the New Westminster boundary, in the Sperling–Marlborough Drive area of south Burnaby) receives the Metro Vancouver Coast Mountain granodiorite watershed supply. At 46 mg/L, Marlborough is slightly harder than the ultra-soft inner-city Vancouver zones (16.5–27 mg/L) but still soft — reflecting the longer distribution pipeline routing from the North Shore filtration plant through the Burnaby transmission network to the south Burnaby corridor, where slight pipeline mineral accumulation increases the hardness from the source's near-zero level.
With 46 mg/L, Marlborough homes are essentially scale-free — occasional kettle cleaning every three months is adequate. Hot water tanks have an excellent operational lifespan. The City of Burnaby or City of New Westminster provides water quality information at burnaby.ca or newwestcity.ca. Health Canada lead precautionary guidance applies to pre-1975 properties in the established Marlborough residential area adjacent to the Burnaby–New Westminster boundary.
Geology & Source: Supplied by Metro Vancouver (GVWD) through the Burnaby–New Westminster distribution network — the Marlborough south Burnaby distribution sub-zone carries soft supply at 46 mg/L (2.7 gpg), consistent with the Metro Vancouver soft mountain watershed supply.