**Obras Sanitarias S.E. MGP (OSSE)** is a key public utility company serving Mar del Plata, dedicated to providing essential water and wastewater services. With over 82 years of experience, OSSE operates vital infrastructure such as the Torre Tanque, a historic water tower that also welcomes visitors through guided tours. The company is committed to sustainability and transparency, featuring initiatives related to wastewater management through its advanced Emisario Submarino system, which has been operational for a decade.

OSSE offers a range of services, including potable water supply, sewage management, and online customer support through its virtual office, making bill payments, service inquiries, and complaint submissions easy for its users. The agency also provides educational projects for the community, promoting awareness about water conservation and responsible waste management. Additionally, OSSE encourages customer engagement with discounts for early annual payments. With a focus on community involvement and efficient service delivery, Obras Sanitarias continues to enhance the quality of life in Mar del Plata.