Program Information Human Services Association (HSA) is a private nonprofit agency whose principal mission is to enhance the cultural, ethical, and social consciousness of underprivileged children, adults, senior citizens, and families through staff leadership. HSA was founded in Bell Gardens in 1940 as an outreach effort of the Presbyterian Church USA, when floods in the area highlighted the pre-existing and growing problems of poverty in Bell Gardens and surrounding southeast Los Angeles County communities. Today, HSA serves over 20,000 clients annually on a non-sectarian basis with a range of services that addresses the unique and shared needs of clients of all ages.