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COVID-19 Updates: Get the latest public information related to coronavirus disease 2019 (COVID-19) at ReadySLO.org.

Public Works office buildings are closed to the public in an effort to keep the community and staff safe.  However, we are still conducting business via email, [email protected] or phone calls, 805-781-5252.  Follow us on Twitter @SLOCountyPWD for the latest updates.

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John Diodati

John Diodati

Interim Director

Contact Public Works via web form, email, or call us at (805) 781-5252.


Forms & Documents > Water Resources

Name Description Type
Drainage Studies Folder
Drinking Water Source Assessments Folder
Groundwater Reports Folder
Invasive Mussels Folder
Master Water Report Folder
Monthly Precipitation Reports Folder
Salinas Dam Release Reports Folder
Stormwater Folder
Water Conservation Folder
Water Quality Reports Folder
Water-Resources-District-Budget-Mngmnt-Policy Water Resources District Budget Policy File
Water-Resources-Division-Strategic-Plan Water Resources Strategic Plan File
Watershed Sanitary Surveys Folder
Lake Nacimiento Water Quality Report Updated Weekly this report lists the tests performed and results found for Lake Nacimiento. File
Zone 3 (Lopez Pipeline) Water Quality Report Updated Weekly this report lists the tests performed and results found for the Lopez Pipeline turnouts. File
Lopez Reservoir Daily Summaries (April 2000-Current) Daily water levels for Lopez Reservoir levels. File
SLO County Average Annual Rainfall Average annual rainfall for SLO County based on data collected from 1955-1998. File
NPDES Annual Notification National Pollutant Discharge Elimination System Annual notification for treatment at Lopez and Santa Margarita Lakes. File
NPDES Aquatic Weed Control Plan National Pollutant Discharge Elimination System Aquatic Pesticide Plan for Lopez and Santa Margarita Lakes. File
Request for Water & Sewer Availability (Will Serve) Request to verify availability of Water and Sewer File
Potable Water Delivery Contact List Local companies delivering potable water to San Luis Obispo County. File

Contact Public Works via web form, email, or call us at (805) 781-5252.