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Williams Lake Drinking Water Quality
By OpenStats · Built from official Canadian sources
Regional estimateB
Water quality grade
Good
Graded against Health Canada drinking water guidelines
Lead within guidelinepH in range
Hardness vs provincial average90 mg/L · prov. avg 139 mg/L
Lead vs provincial average0.2 μg/L · prov. avg 0.3 μg/L
Hardness
90 mg/L
Lead
0.2 μg/L
≤ 5 μg/L
pH
6.8
6.5–8.5 range
Hardness
90 mg/L
Moderate
Lead
0.2 μg/L
Max: 5 μg/L
pH
6.8
6.5–8.5
Chlorine
0.7 mg/L
Max: 4 mg/L
From source to sink
Where Williams Lake water comes from
Lakes, rivers, wells, and treatment plants behind the kitchen tap, in plain language. Chemistry grades above are a separate lab snapshot; this section is the route the water travels.
Open the full tap storyOn the map
Where Williams Lake water lives
Source waters and treatment plants pinned from published utility names. Open a pin below for the full OpenStreetMap view.
- CityWilliams Lake
Municipal service area
- Treatment plantScout Island / Lakeside chlorination (pressure media filtration WTP funded for manganese)
Approximate pin near Williams Lake (exact plant coordinates pending)
Map data © OpenStreetMap contributors. Pins are approximate for orientation, not legal survey points.
Where it starts
Groundwater
Research confidence: high
Named source waters
- Williams Lake aquifer (deep wells on Scout Island and North Lakeside)
Treatment plants
Scout Island / Lakeside chlorination (pressure media filtration WTP funded for manganese)
Sodium hypochlorite disinfection at source today. Funded pressure-media filtration plant will add manganese removal and filtration.
How it reaches your street
Five deep wells (four Scout Island, one north shore), nine reservoirs (~20,000 m³), booster pumps between zones.
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Reading this page
Williams Lake's most recent drinking water sample (2026-07-22) reports hardness of 90 mg/L, classified as moderately hard, and pH 6.8, drawn from a surface water source and treated at Williams Lake Water Treatment Plant. Lead measured 0.2 μg/L and fluoride 0.5 mg/L.
Free chlorine measured 0.7 mg/L in this sample. No E. coli was detected in this sample.
Williams Lake's hardness of 90 mg/L is below the British Columbia average of 139 mg/L across 31 tracked municipalities, with a provincial average pH of 7.5.
These readings summarize a single compliance snapshot, not a certification of the water reaching your tap. Test your own water periodically, especially on a private well, and consider a softener if hardness is classified hard or very hard.
How to use this page: read the headline metrics first, then where the water comes from (map and tap story), then the parameter table and source footer.
Health parameters meet Health Canada limits; turbidity above the 1 NTU typical target.
Health parameters meet Health Canada limits; turbidity exceeds the typical 1 NTU aesthetic target.
Figure 1 · From source to sink
How drinking water reaches your tap
Compared to provincial average
British Columbia · 31 cities in sample
Hardness (city vs British Columbia avg)90 mg/L
pH (city vs British Columbia avg)6.8
Lead (city vs British Columbia avg)0.2 μg/L
Fluoride (city vs British Columbia avg)0.5 mg/L
Provincial average: hardness 139 mg/L · pH 7.5 · lead 0.3 μg/L · fluoride 0.6 mg/L
Full parameters
| Parameter | Reading | Health Canada guideline | Status |
|---|---|---|---|
| Hardness | 90 mg/L | No health limit (aesthetic) | Compliant |
| pH | 6.8 | 6.5–8.5 | Compliant |
| Lead | 0.2 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.5 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 0.7 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 1.1 NTU | ≤ 1 NTU (typical target) | Exceeds guideline |
Alberta water licences
WaterRegister.ca
On a private well or holding an Alberta water allocation licence? Water Register maps EPA licence records, transfer comparables, and watershed context across the province.
Explore WaterRegister.ca →Drinking water filters and test kits
Pitcher and under-sink filters, plus hardness strips and TDS meters for tap checks.
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· Compare options- Shop on Amazon.caWater filter pitcherPopular everyday tap filter
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- Shop on Amazon.caShower filterChlorine at the showerhead
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- Shop on Amazon.caTDS meterQuick dissolved-solids readout
- Shop on Amazon.caWater hardness test stripsQuick tap reading
Source · ECCC / municipal open data (seed). Last updated 2026-07-22. Refreshed on the site's automated schedule.