The above are two good, and siilar in approach answers, but there are two issues it seems no one includes:
1) If you house was built before 1978 it must be inspected by a certified contractor or lead ... read more
Can anyone recommend a drainage specialist for outdoors? Run off from surrounding properties is causing serious drainage problems that carries into our pool.
A landcaping contractor might help. Depending on your location, you may be able to find someone here: http://www.guildquality.com/find/Landscaping-and-hardscaping/North-America