Scottsdale officials are warning residents that hidden irrigation leaks in their yards could be the reason their water bills are suddenly going up. The city says these leaks often happen underground or within landscaping systems, making them hard to detect — while still wasting thousands of gallons of water over time. That means your sprinkler system could be leaking every day… and you wouldn’t even know it. According to the city, some of the most common warning signs include:     •    Soggy or unusually wet spots in your yard     •    Patches of grass that look greener than the rest     •    A sudden spike in your monthly water bill Even small leaks can slowly add up, especially in Arizona where irrigation systems run frequently to keep landscapes alive. To help residents catch these issues early, Scottsdale is offering free tools and services, including:     •    Leak alerts through their WaterSmart system     •    Free outdoor water efficiency checks     •    Workshops on manag...