Here are some tips to conserve water. There is a state-wide alert:

Dont water your lawn between 10am and 4pm, during heat of the day, you can lose as much as 65 percent of the water to evaporation.

For most Florida soils, grass needs about 2/3 to 3/4 of an inch of water every three to five days. Overwatering is bad for your lawn, causing it to develop shallower roots. Cutting grass too short has the same effect.

Use a slow-release nitrogen product for fertilizer and don't overdo it. Fertilizers increase water needs because they stimulate growth. Try mulch around trees, shrubs and flower beds to hold moisture in the soil.

Cluster plants based on their water needs. Because grass is often the biggest water user, limit it to areas where children or pets play, using mulch or other ground cover elsewhere.

The best way to conserve water is to try xeriscaping, or using only native plants that have adapted to Florida's climate and are resistant to insects and disease.

http://www.orlandosentinel.com/news/041299_xtips12_19.htm