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See how the rivers are classified

According to Resolution 357/2005 of Conama (National Council for the Environment), which classifies water bodies and the environmental guidelines for this classification, there are five classes in which we can fit fresh water bodies (rivers, lakes, ponds, etc.)

Classes of rivers:

1. Special Class

These are destined waters:

• Supply for human consumption, with disinfection;
• Preserving the natural balance of aquatic communities;
• Preservation of aquatic environments in full protection Conservation Units.

2. Class 1

These are destined waters:

• Supply for human consumption, after simplified treatment;
• To the protection of aquatic communities;
• Primary contact recreation, such as swimming and diving, as per Conama Resolution 274/2000;
• Irrigation of vegetables that are consumed raw and of fruits that grow close to the ground and that are eaten raw without removing the skin;
• The protection of aquatic communities in Indigenous Lands.

3. Class 2

These are destined waters:

• Supply for human consumption, after simplified treatment;
• The protection of aquatic communities;
• Primary contact recreation, such as swimming, water skiing and diving, in accordance with Conama Resolution 274/2000;
• Irrigation of vegetables, fruit plants and parks, gardens, sports and leisure fields, with which the public may have direct contact;
• To aquaculture and fishing activity.

4. Class 3

These are destined waters:

• Supply for human consumption, after conventional treatment;
• Irrigation of arboreal, cereal and forage crops;
• To recreational fishing;
• To secondary contact recreation;
• To the watering of animals.

5. Class 4

These are destined waters:

• To navigation;
• To landscape harmony.

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