Books in the Rescue Riders series

Hannah, Jade and Charlotte are mad about ponies and love riding. So when disaster strikes, they're the first to ride to the rescue... A riding school outing ends in trouble when a fire breaks out in an old building. With no phone line in place and emergency services some distance away, the girls must think fast. Charlotte volunteers to gallop to the nearest farm, while Hannah and Jade come up with a plan to fetch water on horseback. But will the girls raise the alarm in time - before the flames take a final hold?