Water & Sewer
Santa Rosa's primary source of water is from the Russian River supplied by the Sonoma County Water Agency (Water Agency) through the Water Agency’s aqueduct. Santa Rosa’s Water System provides water service to over 53,000 residential and commercial connections through over 600 miles of water main.
Water Distribution System
There are 24 reservoirs (tanks) located in higher elevations within Santa Rosa that provide valuable storage of 22 million gallons of drinking water. Due to elevation differences throughout the City, 25 - 30% of Santa Rosa’s water is boosted to these reservoirs by water pump stations to help to maintain adequate water pressure to our customers.
Water Operations is able to effectively operate and troubleshoot the city’s Water Distribution System by monitoring all pump station and reservoir parameters remotely using a Supervisory Control and Data Acquisition (SCADA) System.
Maintenance & Repair The water system is maintained by three Water Operations Construction crews to insure delivery of clean and safe drinking water with a minimum or no interruption to our customers. These crews are responsible for mainline, valve and sample station repairs, maintenance and repair of fire hydrants, city-side leak repairs, and plastic service line replacement.
Additionally, the Water Operations crews maintain the 6,000 fire hydrants throughout the City. Maintenance includes testing for proper operation and clearing any obstructions, such as vegetation that might impede the use of the hydrant. The crew also tests the flow of the hydrants and paint a color coded top indicating the flow rate for easy identification, as well as, paint a number on the body of the hydrant indicating its static pressure.
Water that goes down your shower, toilet and sink drain enters our wastewater collection system. Over 500 miles of underground pipes brings this wastewater from homes, businesses and industry located within the City of Santa Rosa, as well as, within the cities of Rohnert Park, Cotati, Sebastopol, and the South Park Sanitation District to the Laguna Treatment Plant.
Wastewater Collection System
The majority of our wastewater runs by gravity through a series of wastewater pipes to the Plant. The remainder of the wastewater, due to elevations that will not allow for gravity flow, must be lifted (pumped) to a location through force (pressurized) mains in the wastewater system that will allow the wastewater to return to a gravity wastewater main. The wastewater lift station system consists of 18 wastewater lift pump stations.
Maintenance & Repair
Santa Rosa Water has a robust maintenance and repair program to prevent sewer line blockages, breaks, overflows and Inflow & Infiltration of groundwater and storm water into the collection system.
The Cleaning Crew cleans and maintains the collection system using Combination Cleaning Trucks which have the ability to clean the sewer lines with high water pressure, as well as, the capability to vacuum debris that is encountered.
Additionally, Santa Rosa Water works to eliminate inflow and infiltration of groundwater and storm water into the collection system, as such water does not need to be treated at the Laguna Treatment Plant; it should be entering our storm drain system or soaking into the ground. Santa Rosa Water conducts smoke testing to find the source of an inflow and infiltration problem, as well as, leaks and illegal connections to
Sewer Lateral Maintenance Areas of Responsibility
City Code; Title 15 Sewers, Chapter 15-16 Sewer Connections:
User shall maintain, operate, and repair, at user’s own expense and after obtaining all required permits, the entire sewer service lateral, cleanouts, backwater valves and backflow overflow devices from, upon, within, and under user’s premises and property and to the City sewer. User shall be responsible for maintaining a clear, unobstructed sewer service lateral, free of all breaks, leaks and obstructions, including, but not limited to, roots, rocks, dirt, and grease, from, upon, within, and under the user’s premises and to the City sewer. It is user’s responsibility to operate, maintain, and repair the entire sewer service lateral, however, the City may, in its sole discretion and at City expense, elect to perform occasional repairs on that portion of the sewer service lateral located between the City sewer and to the backside of the curb or sidewalk. (Ord. 3914 § 1, 2009; Ord. 3895 § 1, 2008)”
For questions regarding installation of a sewer lateral, or the fees associated to connect, contact Utilities Engineering Customer Service at (707) 543-4200.
- How does the Wastewater Collection System Work?
- Where does our wastewater go?
- What is inflow and infiltration?
- Why is inflow and infiltration a problem?
- What is an erroneous connection to the wastewater system?
- How does Santa Rosa Water identify inflow and infiltration?
- How can inflow and infiltration be prevented?
- What are Sewer backups/blocks and how are they prevented?