Water hardness in Uxbridge
Uxbridge, Ontario tap water is hard, drawn from groundwater via durham region uxbridge system. Here is what it means at home, and the source.
What this means at home
Noticeable scale on fixtures and in kettles and water heaters; many homes choose to soften.
Uxbridge is served by the Durham Region's Uxbridge groundwater system.
A softener is the usual call here. A quick test kit confirms it for your own tap.
New to this? Read hard water, explained, including whether it is safe to drink and how to test your tap.
The number, in real terms
At 186 mg/L mg/L (10.9 grains per gallon), a four-person Uxbridge household puts roughly 3,263 grains of hardness a day through its plumbing (industry sizing convention: about 300 US gallons a day). A common 32,000-grain softener would regenerate about every 10 days here; that regeneration cadence, not the sticker size, is what to match to this water when you buy.
Scale ceiling: every 1,000 litres heated can leave at most 186 grams of scale, because that is the total mineral carried at 186 mg/L mg/L. Real kettles and water heaters precipitate a fraction of that, but the ceiling scales with the number: Uxbridge's hard water earns its reputation for chewing through heater elements.
How this is calculated: grains per gallon = mg/L divided by 17.1; daily grain load = gpg x 300 US gallons (the softener trade sizes in US gallons, four-person household); regeneration interval = 32,000 grains divided by the daily load; scale ceiling = mg/L carried per 1,000 L. The input figure is Regional Municipality of Durham's own published number, checked 2026-07-03. Full method on the methodology page.
Uxbridge water hardness questions
How hard is the water in Uxbridge?
Uxbridge's tap water is hard, about 186 mg/L mg/L as calcium carbonate (10.9 grains per gallon), drawn from groundwater via durham region uxbridge system. Figure from Regional Municipality of Durham, last checked 2026-07-03.
Do I need a water softener in Uxbridge?
At this hardness, most Uxbridge homes run a softener: it cuts the scale that shortens the life of water heaters and appliances. Test your own street first, since individual readings still vary, then size the softener to that.
How does Uxbridge compare with nearby towns?
Closest verified figures: South-West Oxford at 180 mg/L as CaCO3 mg/L, East Gwillimbury at 167-329 mg/L as CaCO3 mg/L, King at 116 to 285 mg/L across York Region systems serving the Township of King mg/L. Uxbridge sits at 186 mg/L mg/L, all measured as calcium carbonate.
Source
Source: Regional Municipality of Durham, last checked 2026-07-03. Hardness varies by neighbourhood, season, and which well or plant serves your street, especially on groundwater systems. These are the municipal published figures as of the verified date, good for planning, not a substitute for a home test or your utility's current report.
Compare nearby verified figures: South-West Oxford (180 mg/L as CaCO3 mg/L), East Gwillimbury (167-329 mg/L as CaCO3 mg/L), King (116 to 285 mg/L across York Region systems serving the Township of King mg/L). Or see every municipality.