Click to Home
Go To Search
Urban Forest
San Jose Home
Water Features
Fountain outside a buildingPonds and Fountains
The water found in a pond or pool is just as full of activity and as varied in its composition as a soil sample. It is not just a simple see-through medium but a living system, composed of water, gases, dissolved mineral nutrients, plants, and often animals.

Pools and ponds are aesthetically pleasing but often difficult and expensive to manage. Improperly designed water features frequently allow runoff from the surrounding landscape to contaminate the water with nutrients and chemicals from fertilizers and herbicides.

Maintaining Clean Water
The biggest problem facing landscape managers responsible for water features is the potential for algae growth. This growth cannot always be prevented, but careful attention to design as well as management strategies can keep it under control.

Using nutrient-rich recycled water may offer more of a challenge to maintain algae-free water, but there are several techniques available to minimize algae growth. They include:
  • Where practical, design or reconfigure to minimize exposure to sunlight. Shading will also reduce evaporation
  • Use deep and narrow water features, which will not heat up as quickly as shallow, wide features
  • Provide adequate circulation and aeration and avoid designing areas where water will not circulate
  • Use blue dye, which is effective because it absorbs light
  • Increase the frequency and quantity of applied chlorine