Ottawa sits at City Score rank #7 with a standing of 66%, from 7 of 8 open-data pillars (tax, construction, connectivity, indoor air, water, seismic hazard, growth, safety). Missing pillars score at median standing so thin coverage cannot inflate the rank. Rising 15 places versus 2022 (#22 → #7).
Latest owned placements: building permit value rank #7 of 10 (2024); indoor radon rank #111 of 327 at 112 Bq/m³ survey mean; residential mill rate rank #54 of 57 (7.36 mill rate). Full tables and method notes live on each study edition; atlas readings for the same slug open from the topic buttons.
In the 2025 City Score edition, Ottawa carries a City Score standing of 66% (rank #7 of 343) with 7 of 8 pillars observed. That sits 14 points above the Ontario peer average across 123 ranked cities. Within Ontario, Ottawa ranks #6 of 123 on City Score.
The strongest signal in the current chart is drinking-water hardness (standing 99%, rank #341 of 343, raw score 21). The weakest observed pillar is seismic hazard (standing 15%, rank #52 of 343). Crime severity uses the Statistics Canada police-service CSI mapped to Ottawa Police Service (StatCan Ontario part of Ottawa–Gatineau) (table 35100026), not a regional proxy.
Drinking-water hardness on the water atlas reads 21 mg/L as CaCO₃ for Ottawa. Compare that figure to the hardness pillar on the chart and to the national hardness guide on the hub.
