I have dual impressions about the Philippines. After having watched and read about rivers full of garbage, piles of trash everywhere, terrible traffic, air filled with toxic smoke, mercury and other poisonous contamination of water and soil I was about to change my mind about going there. On the other hand there are images of beautiful nature, marine life and lots of tourists. So its kind of a place of contrast. Are those claims true or exaggerated? For example with drinking water, can I drink from a spring or should I spend money on bottled water? Another question of concern for me is typhoons; are there islands which are safer than others? I need to form an objective opinion. Your thoughts are welcome.
Don't be turned off by what you see in TV or documentary shows about pollution, garbage, and traffic in the Philippines. Those problems, like others have mentioned, are mostly confined to the large cities such as Manila. I can't comment about Cebu since I have not lived or been there. However, once you leave the urban cities, the country side offers lots of fresh air, green spaces, and nice clean rivers and beaches. Garbage will still be somewhat of an issue but not that bad compared to Manila.
Concerning water, when coming from a sterile environment such as North America, always drink from bottled water because your gut won't be able to take the bacteria found in tap water in Manila and other places around the Philippines. Even if you see locals drinking tap water, don't follow them. They have developed strong guts over the years and they can handle it. Even if you think you can, don't. You don't want to risk it and ruin you vacation at the same time. Also, when ordering cold drinks, tell your waiter or waitress not to put ice on it. You don't know where the ice came from. In the province, they drag the large block of ice on the ground before hacking it down and storing it in a cooler. Also, you do not know where the water they used to make the ice came from.
On typhoons, the season starts any time from August to November. Monsoon season (heavy rains) start from July to November and on some years last into December. The best time to visit the Philippines is from December to June. The weather between December to March is nice, comfortable, and dry. March to June is very hot and dry. June to October is hot, wet and very humid. There are two common paths for typhoons in the Philippines. All typhoons start from the eastern seaboard (pacific) and cut diagonally across Luzon from SE to NW. Some cut from East to West across the Visayas. Palawan and Mindanao rarely get hit by typhoons. So, during typhoon season, I feel Palawan is a safer destination. Even some parts of Mindanao are OK but I would stay away from the 'hot spots' or 'off limits for any visitor' areas.
So, don't be discouraged by the bad stuff you see on TV or read in magazines. The good stuff you see, read, and hear are real. The good thing is that the good outweighs the bad.