Preston Centre Water Hardness & Quality Report (2026)
Water Hardness
Source
lake
pH Level
8.1
neutral = 7.0
Lead
0.004 mg/L
✓ Below action level
TDS
549.7 mg/L
Est. Daily Cost
$0.61
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 Preston Centre, your appliances are currently losing 31% efficiency due to mineral buildup.
| Appliance | In Preston Centre | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 2 yrs | 8.5 yrs | -76% |
| Washing Machine | 5.1 yrs | 12 yrs | -58% |
| Water Heater | 6.4 yrs | 15 yrs | -57% |
Regional Water Comparison
How Preston Centre compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Preston Centre, Ontario | 229 mg/L | Very High | 🔴 Very Hard |
| Greenway-Chaplin, Ontario | 229.5 mg/L | Very High | 🔴 Very Hard |
| Cambridge, Ontario | 280 mg/L | Very High | 🔴 Very Hard |
| Hespeler, Ontario | 245 mg/L | Very High | 🔴 Very Hard |
| Fiddlesticks, Ontario | 229 mg/L | Very High | 🔴 Very Hard |
National Benchmark
How Preston Centre compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Preston Centre | 229 mg/L | 🔴 High |
| Canada National Avg | 141 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
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What Makes Preston Centre's Water Unique?
Local geology and source profile
Preston Centre's drinking water is managed by the Region of Waterloo, drawing from the Grand River via the Mannheim Water Treatment Plant — Preston Centre is the historic downtown core of Preston, one of the three former cities merged into Cambridge in 1973, located at the confluence of the Speed River and the Grand River, a heritage commercial district of Victorian and Edwardian commercial buildings along King Street East in south Cambridge, home to the Preston Springs Hotel heritage building, the Speed and Grand River confluence historic mill district, and the vibrant Preston Centre market and arts community that anchors Cambridge's south end heritage identity. Water undergoes coagulation, sedimentation, filtration, UV disinfection, and chloramination, meeting all Guidelines for Canadian Drinking Water Quality (GCDWQ) requirements. Hardness measures 229 mg/L (13.4 gpg) — classified as very hard by Health Canada, consistent with the standard Waterloo Region Grand River supply range.
Preston Centre draws from the Grand River at the Speed River confluence — the Grand River carries dissolved Silurian Guelph Formation dolostone, Niagara Formation limestone, and Ordovician carbonate from the Niagara Escarpment and the Paris-Galt Moraine, producing very hard supply throughout the Cambridge-Galt-Hespeler area. At 229 mg/L, Preston Centre is at the standard Waterloo Region Grand River supply level (session reference: Waterloo Region range 221.5–229.5 mg/L), consistent with Centreville Chicopee (225.5 mg/L from this batch) in the same regional supply.
At 229 mg/L, Preston Centre homeowners face persistent scale challenges — monthly to bimonthly kettle and showerhead descaling is typical. The Region of Waterloo provides water quality information at regionofwaterloo.ca. Health Canada lead precautionary guidance applies to pre-1975 properties in the historic Preston Centre Victorian commercial and residential heritage district.
Geology & Source: Supplied by the Region of Waterloo from the Grand River via the Mannheim Water Treatment Plant — the Preston Centre Cambridge distribution sub-zone carries very hard supply at 229 mg/L (13.4 gpg), consistent with the standard Waterloo Region Grand River supply range.