If you own a Watts Premier reverse osmosis system, this 50 GPD membrane replacement is a game-changer. After installing it in my 5-stage WP5-50 system (which has served me faithfully for a decade), I immediately noticed the difference in water purity. My TDS meter showed a dramatic drop from 31 PPM to just 2 PPM after flushing two tanks – that’s cleaner than most bottled water!

The installation was straightforward, though I’d recommend taking a quick photo of your tubing connections before disassembling the old membrane. The built-in check valve is a smart design feature that sets Watts apart from generic replacements – no separate parts to fuss with.

While some users report slightly higher PPM readings (10 vs. previous 4-8), my experience matched the advertised performance. The membrane handles our moderately hard water beautifully, removing not just TDS but also heavy metals and chlorine taste. Pro tip: Pair it with fresh sediment/carbon filters for optimal results.

At this price point, it’s worth sticking with OEM rather than risking off-brand membranes that might compromise your system’s efficiency. Just remember – lifespan varies based on your water quality; ours lasts about 3 years before needing replacement.