The Efficiency of water service delivery is largely dependent on the prevailing condition of the distribution system.
SCWD's water system presently maintained and operated by PrimeWater-Sorsogon City is composed of sources, storage facilities and the distribution system, including individual service connections to water consumers.
The original waterworks system of the former Municipality of Sorsogon was constructed in 1929, composed of water sources tapped from a series of springs developed between 1929 and 1957.
Spring water was conveyed through the 150mm diameter transmission line to a break pressure chamber ehich was then divided into the two chamber, one supplying barangays Pangpang and Macabog while the other supplying Brgy. Bibincahan. Spring water was stored in the trapezoidal concrete reservoir at Brgy. Macabog while water supply for Brgy. Bibincahan was stored in the cylindrical ground reservoir at Sitio Baribag. These facilities are still being used to this day.
In 1980, the first deepwell of SCWD was constructed at Sitio Baribag. Originally a turbine pump, water was pumped into the Baribag Reservoir before discharging it into the distribution system. The turbine pump was replaced with a submersible pump and motor in 2006 to enhance its efficiency. The mixture of spring water and pumped water was stored in the Baribag Reservoir where water treatment through chlorination was applied.
Another well was constructed and operated as Pumping Station No. 2 beside Our Lady of Penafrancia Seminary, also at Brgy. Bibincahan, in 1995. Additional deepwell sources were constructed from 1999 to 2022 within the main service areas of SCWD, bringing to 16 the number of operational deepwells to date.
All deepwells have varying well casings and well depth, ranging from 4 inches to 10 inches abd from 74 meters to 170 meters, respectively. Water is drawn using submersible pumps and motors ranging from 5Hp to 60Hp and are operated using either a variable frequency drive or reduced voltage automatic transformer. Main power is sourced through the Sorsogon II Electric Cooperative while stand-by generator sets are used during the power service interruptions.
Another SCWD water source is the bulk supply from Abejo Waters Corp. (AWC) Sorsogon Bulk Water Supply Ultra-filtration and Treatment Facility at Sitio Rangas, Brgy. Guinlajon, using Cawayan River as surface water source since 2015. Filtration is done by a two-unit modular micro ultra-filtration system with a capacity of 3,000 cubic meters per day. Filtered water is stored and treated, conveyed via 1.4 kilometers of 200mm transmission line and injected into the SCWD distribution system. Two additional deepwells were completed by AWC at Brgy. Guinlajon (2019) and St. Raphael Subdivision, Brgy. Pangpang (2021), bringing AWC total estimated production to 5,400 cmd.
PrimeWater-Sorsogon City also purchases treated water from Casiguran Water District via a Memorandum of Agreement beginning on 2016 at a minimum volume of 500 cmd on the first year, and increasing volume delivery to up to 2,000 cmd on the 25th year.