Safety factors matter because a water resistance rower combines moving body position, a sliding seat, foot straps, a handle pull, a long frame, and a water tank. The machine can feel smooth, but poor setup or worn parts can turn a simple rowing session into an awkward or risky one.
The most important checks are practical: stable placement, enough rail clearance, secure footrests, smooth seat travel, safe tank condition, and a stroke pace the user can control. A safer rower is easier to use consistently because the user is not fighting the machine.