Answer:
Dear [Principal's Name],
I am writing to request your permission to start a "save water campaign" at our school. As you may know, water conservation and harvesting are important issues that affect not only our community, but also the entire planet.
I believe that our school can play a significant role in raising awareness about the importance of water conservation and the ways in which we can all work together to reduce water waste. The campaign would involve a series of activities and events, such as posters and flyers, class presentations, and possibly even a school-wide contest to encourage students to come up with creative ideas for saving water.
I am confident that this campaign would not only educate our students about the importance of water conservation, but also inspire them to take action in their own lives. I hope that you will consider granting permission for us to proceed with this initiative.
Thank you for your time and consideration.
Sincerely,
[Your Name]