Yes, get a GFCI-protected, weather-resistant cord.

For pools, spas, or any wet area, you need a cord with a built-in GFCI (ground fault circuit interrupter) plug and a “W” in its type rating (like SJTW or STW). Regular indoor extension cords will eventually fail or shock someone.

The risk isn’t just a tripped breaker — it’s electrocution. Water carries current, and a tiny break in a standard cord’s insulation can turn a puddle into a danger zone. That’s why codes for pools and spas require GFCI protection at the outlet or on the cord itself. Most outdoor cords sold today have a GFCI block built into the plug end, but double-check the packaging says “for outdoor use” and lists a water resistance rating.

Look for the “W” in the cord’s jacket marking. UL-rated cords will say something like “SJTW” — the W stands for weather-resistant (meaning it handles moisture and UV). The thickness matters too: 14-gauge for medium loads (like pumps or lights), 12-gauge for heavier stuff. But never, ever use a cord that’s not GFCI-protected around water. The plastic boot on the plug end is a nice extra, not a substitute.

Your life is worth more than saving ten bucks on a cord.