Bio Piscinas

Bio Piscinas, based in Aljezur in the Algarve region of Portugal, is a company dedicated to the design, construction and promotion of Biological Pools® — natural swimming pools that rely on ecological water treatment systems rather than chemical products. Their approach combines the pleasure of swimming with sustainable, low-impact water management, creating pools that integrate naturally into the surrounding landscape. Beyond building the pools themselves, Bio Piscinas offers a range of complementary services including landscape architecture, ecological water treatment plants (ETAP), solar sauna installations, and rewilding projects, positioning the company as a broader provider of sustainable outdoor living solutions. Their product range spans from public-use biological pools to smaller-scale, private installations, catering to a variety of client needs from residential gardens to public leisure spaces. The company markets its work internationally, highlighting Biological Pools® installed around the world, and shares its story through galleries, testimonials, awards and media coverage. Their focus on natural aesthetics, ecological function and long-term sustainability sets them apart from conventional pool builders reliant on chlorine and other chemical treatments. With a base of operations in Aljezur, a coastal town known for its natural beauty within the Southwest Alentejo and Vicentine Coast Natural Park, Bio Piscinas embodies the growing movement in Portugal toward construction and leisure practices that respect natural ecosystems while still delivering high-quality, enjoyable outdoor spaces for swimming and relaxation.