Spokane vs Kirkland Water Quality
Side-by-side water quality comparison for two Washington cities.
If you are comparing Spokane and Kirkland water quality - whether moving, choosing between the two, or curious about a relative's water - here is what the data shows.
Hardness comparison
Spokane has significantly harder water at 104 PPM versus Kirkland at 12 PPM, a difference of 92 PPM. Kirkland residents generally do not need any water softening equipment.
Water sources and why they differ
Water sources differ: Spokane draws from Spokane-Rathdrum Aquifer, while Kirkland uses Seattle Water (Cedar/Tolt Rivers). Both use similar source types, but local geology creates the hardness variation.
Contaminant concerns
PFAS contamination is a concern in Spokane (16.8 ppt, above the EPA limit of 4 ppt). A reverse osmosis system or NSF P473-certified filter is recommended for drinking water.
What this means for you
Not sure what your specific situation needs? Take the quiz to get a recommendation based on your water data, budget, and household size.
| Metric | Spokane | Kirkland |
|---|---|---|
| Hardness | 104 PPM | 12 PPM |
| GPG | 6.1 | 0.7 |
| TDS | 156 PPM | 32 PPM |
| PFAS | 16.8 ppt | 0 ppt |
| Lead | 2 ppb | 1 ppb |
| Chlorine | 0.7 mg/L | 1 mg/L |
| Level | Moderately Hard | Soft |