The District (formerly known as Hazel Dell Sewer District) has a rich history of service and support for the communities it serves. In 1958, the District was formed to meet the needs of a growing business community that was not served by sewer. The District was formed under the name Clark County Public Sewer District No. 1, later renamed Hazel Dell Sewer District and is now Clark Regional Wastewater District. The newly formed District provided treatment and collection for 300 customers in Hazel Dell. In the 1970’s, recognizing the economies of scale for wastewater treatment, the District stopped providing treatment services. Instead, through separate interlocal agreements with Clark County and the City of Vancouver, the District began to utilize their existing plants for wastewater treatment. This has allowed the District to focus on the collection and transmission system.
In 1993, the County requested the District to take over all of its collection and transmission functions, leaving the County to focus only on treatment at the Salmon Creek Treatment Plant (SCTP). In 1995, the County, the City of Battle Ground and the District entered into a three-way agreement to expand and improve the SCTP. The District and Battle Ground own 100% of the capacity of SCTP, with the County providing the facility and operating staff. In 2003, the three partners, under the direction and management of the District, undertook a $77 million dollar capital improvement upgrade of the Salmon Creek Wastewater Management System (SCWMS). Today the project is completed, providing additional treatment capacity for several years.