Petawawa Water Hardness & Quality Report (2026)
Water Hardness
180+ mg/L
Very Hardestimated · not lab-verified
Source
lake
pH Level
8.6
neutral = 7.0
Lead
0.001 mg/L
✓ Below action level
TDS
862.1 mg/L
Est. Daily Cost
$0.91
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 Petawawa, your appliances are currently losing 45% efficiency due to mineral buildup.
| Appliance | In Petawawa | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.7 yrs | 8.5 yrs | -45% |
| Washing Machine | 6.6 yrs | 12 yrs | -45% |
| Water Heater | 8.3 yrs | 15 yrs | -45% |
Regional Water Comparison
How Petawawa compares to its nearest neighbours
| City | Hardness | Mineralization | Risk |
|---|---|---|---|
| ▶ Petawawa, Ontario | ≈ 180+ mg/L | Very High | 🔴 Very Hard |
| Pembroke, Ontario | ≈ 0–60 mg/L | Medium | 🟢 Soft |
| Mississippi Mills, Ontario | ≈ 120–179 mg/L | High | 🟠 Hard |
| Carleton Place, Ontario | ≈ 0–60 mg/L | Medium | 🟢 Soft |
| Kanata, Ontario | ≈ 0–60 mg/L | Medium | 🟢 Soft |
National Benchmark
How Petawawa compares to the Canada average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Petawawa | ≈ 180+ mg/L | 🔴 High |
| Canada National Avg | 140 mg/L | 🟠 Moderate |
| Vancouver Top Rated | 3 mg/L | 🟢 None |
Bring Vancouver-quality water to your Petawawa home
Shop water softeners on Amazon.com →
What Makes Petawawa's Water Unique?
Local geology and source profile
The water supply for Petawawa, Ontario, comes from a local lake within the Ottawa Valley corridor. While specific details about the treatment plants and exact sources are not readily available, the Town of Petawawa's system is managed by the Ontario Clean Water Agency. For precise information on treatment processes and current quality metrics, direct contact with the municipality or their official consumer confidence report is recommended.
The region's geology features a mix of Shield and Paleozoic sedimentary rocks. This transitional geological setting, particularly within the Renfrew County lake systems, contributes to the water's characteristics. The interaction with calcareous deposits in this area is the primary reason for the water's notably high hardness.
Residents may notice the effects of this very hard water on their appliances and plumbing. Over time, mineral buildup can reduce the efficiency of water heaters and dishwashers, potentially shortening their lifespan. You might also find that soaps and detergents don't lather as easily. Regularly descaling appliances and pipes can help mitigate these issues and maintain optimal performance.
Geology & Source: Transitional Shield–Paleozoic sedimentary geology; calcareous deposits produce very hard water
Other Ontario Water Reports
Report an Issue
Notice an error or missing data? Help us keep this page accurate. If you spot incorrect water hardness, outdated utility info, or missing details, please let us know.
All reports are reviewed by our team. Thank you for supporting data quality!