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Surrey 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 average184 mg/L · prov. avg 139 mg/L
Lead vs provincial average0 μg/L · prov. avg 0.3 μg/L
Hardness
184 mg/L
Lead
0 μg/L
≤ 5 μg/L
pH
7.7
6.5–8.5 range
Hardness
184 mg/L
Very hard
Lead
0 μg/L
Max: 5 μg/L
pH
7.7
6.5–8.5
Chlorine
0.5 mg/L
Max: 4 mg/L
From source to sink
Where Surrey 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 Surrey water lives
Source waters and treatment plants pinned from published utility names. Open a pin below for the full OpenStreetMap view.
- CitySurrey
Municipal service area
- Source waterCapilano Reservoir
Source water
- Source waterSeymour Reservoir
Source water
- Treatment plantSeymour Capilano Filtration Plant
Approximate pin near Surrey (exact plant coordinates pending)
- Treatment plantCoquitlam Water Treatment Plant
Approximate pin near Surrey (exact plant coordinates pending)
Map data © OpenStreetMap contributors. Pins are approximate for orientation, not legal survey points.
Where it starts
Surface water
Research confidence: high
Named source waters
- Capilano Reservoir
- Seymour Reservoir
- Coquitlam Reservoir
Treatment plants
Seymour Capilano Filtration Plant
Regional Metro Vancouver treatment for Capilano/Seymour sources.
Coquitlam Water Treatment Plant
Regional Metro Vancouver treatment for Coquitlam source; Surrey reports receiving a large share of supply via Coquitlam and Seymour crossings (Annacis, Port Mann, Barnston).
How it reaches your street
Surrey buys all potable water from the Greater Vancouver Water District and operates one of BC’s longest municipal distribution networks, with many pressure zones and pump stations. Secondary chlorination is applied before water enters city mains; no further municipal treatment.
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Partner
Lab water test for Surrey taps
Municipal reports cover the plant. A Tap Score kit tests the water at a Surrey tap for a broader contaminant panel.
Lab kit partner link. We may earn a commission when tracking is active.
Reading this page
Surrey's most recent drinking water sample (2026-07-22) reports hardness of 184 mg/L, classified as very hard, and pH 7.7, drawn from a surface water source and treated at Surrey Water Treatment Plant. Lead measured 0 μg/L and fluoride 0.5 mg/L.
Free chlorine measured 0.5 mg/L in this sample. No E. coli was detected in this sample.
Surrey's hardness of 184 mg/L is above 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 and very hard water.
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)184 mg/L
pH (city vs British Columbia avg)7.7
Lead (city vs British Columbia avg)0 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 | 184 mg/L | No health limit (aesthetic) | Compliant |
| pH | 7.7 | 6.5–8.5 | Compliant |
| Lead | 0 μg/L | ≤ 5 μg/L | Compliant |
| Fluoride | 0.5 mg/L | ≤ 1.5 mg/L | Compliant |
| Chlorine (free) | 0.5 mg/L | ≤ 4 mg/L | Compliant |
| Turbidity | 2.5 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 →Water softeners for hard water
Very hard water. Whole-house softeners are the high-ticket fit; salt and test kits support the install.
As an Amazon Associate, OpenStats earns from qualifying purchases.
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- Shop on Amazon.caWater hardness test stripsConfirm mg/L before sizing a unit
- Shop on Amazon.caTDS meterQuick dissolved-solids check
Source · ECCC / municipal open data (seed). Last updated 2026-07-22. Refreshed on the site's automated schedule.