Exploring the properties of exoplanets near or inside the radius valley provides insight on the transition from the rocky super-Earths to the larger, hydrogen-rich atmosphere mini-Neptunes. Here, we report the discovery of TOI-1452b, a transiting super-Earth (Rp=1.67{+/-}0.07R{Earth}) in an 11.1day temperate orbit (Teq=326{+/-}7K) around the primary member (H=10.0, Teff=3185 {+/-}50K) of a nearby visual-binary M-dwarf. The transits were first detected by the Transiting Exoplanet Survey Satellite, then successfully isolated between the two 3.2" companions with ground-based photometry from the Observatoire du Mont-Megantic and MuSCAT3. The planetary nature of TOI-1452b was established through high-precision velocimetry with the near-infrared SPIRou spectropolarimeter as part of the ongoing SPIRou Legacy Survey. The measured planetary mass (4.8{+/-}1.3M{Earth}) and inferred bulk density (5.6_-1.6_^+1.8^g/cm^3^) is suggestive of a rocky core surrounded by a volatile-rich envelope. More quantitatively, the mass and radius of TOI-1452b, combined with the stellar abundance of refractory elements (Fe, Mg, and Si) measured by SPIRou, is consistent with a core-mass fraction of 18%{+/-}6% and a water-mass fraction of 22_-13_^+21^%. The water world candidate TOI-1452b is a prime target for future atmospheric characterization with JWST, featuring a transmission spectroscopy metric similar to other well-known temperate small planets such as LHS1140b and K2-18b. The system is located near Webb's northern continuous viewing zone, implying that is can be followed at almost any moment of the year.