Rinse your razor in the sink. Before shaving, partially fill the sink with warm water. This will rinse th e blade just as well and use less water. Check pipes and faucets for leaks. Even the smallest drip from a worn washer can waste 50 gallons or more a day.
Larger leaks can waste hundreds.
Water your lawn only when it needs it. Watering frequently can be very wasteful as it doesn't allow for rainfall that can reduce the need for watering. A good way to see if your lawn needs watering is to step on some grass. If the grass springs back up when you move, it doesn't need watering. Use your automatic washer for full loads only.