This booklet is addressed to the operators of plants for: 

• depuration of civil wastewater, or sewage;
• treatment of the sludge remaining after depuration processes.

The aim of the publication is to illustrate, after a careful description of the main occupational risks, the appropriate preventive and protective systems.
In addition, you can find some summarizing “sheets”, about the following risks:

• exposure to biological agents;
• exposure to chemical agents;
• electricity;
• exposure to noise;
• microclimate and physical strain;
• accidents due to machines and workplaces;
• fire and explosion.

At the end, 3 Appendices contain:

• legislation about most of the above mentioned risks;
• hints on medical surveillance;
• methods for assessing particular risks.