High water pressure can cause traditional sprinklers to mist, fog and waste water. This professional pop-up sprinkler features a built-in 30 PSI pressure regulator that reduces excess water pressure and cuts water usage by up to 50%. Designed with a tapered neck to ensure retraction in all soil types, along with an exclusive co-molded wiper seal that halts leaks and prevents dirt and grit from getting inside the unit. Note: A pressure regulator is required on all sprays sold in the following states: California, Washington, Colorado, Hawaii and Vermont.