Source water assessments (IRWD) Baker Water Treatment Plant water assessment
Imported (MWD) water assessment Every five years, MWD is required by DDW to examine possible sources of drinking water contami- nation in its State Water Project and Colorado River source waters. The most recent surveys for MWD’s source waters are the Colorado River Watershed Sanitary Survey – 2020 update, and the State Water Project Watershed Sanitary Survey – 2021 update. Both source waters are exposed to stormwater runoff,
groundwater is considered most vulnerable to contamination from gas stations, historic gas stations, metal plating/finishing/fabrication facilities, military installations and plastics/synthetics producers. An assessment of the groundwater sources in the Wells 21-22 Desalter Project was completed in May 2009. This groundwater is considered most vulnerable to contamination from sewer collection systems,
The Baker Water Treatment Plant receives untreated surface water from MWD (see MWD water assess- ment above) and untreated surface water from Santiago Reservoir, also known as Irvine Lake. The surface water assessment of Santiago Reservoir is provided by Serrano Water District, which also uses
source water from Santiago Reservoir. The most recent sanitary survey for Santiago Reservoir was updated in 2019. Water supplies from Santiago Reservoir are most vulnerable to septic systems and wildfires. The Source Water Assessment for Santiago Reservoir was completed in
automobiles (gas stations), historic gas stations and underground storage tanks (confirmed leaking tanks). An assessment of the groundwater sources in the Irvine Desalter Project was completed in March 2006. This groundwater is considered most vulnerable to contami- nation from crop irrigation and fertilizers.
recreational activities, wastewater discharges, wildlife, fires, and other watershed-related factors that could affect water quality. Water from the Colorado River is considered to be most vulnerable to
April 2001. The assessment was conducted for the Serrano Water
An assessment of the groundwater source in the Orange Park Acres service area of IRWD was completed in March 2003. This groundwater is considered most vulnerable to contamination from sewer collection systems. An assessment of the groundwater in the Santiago Canyon service area of IRWD was completed in January 2003. There have been no contaminants detected in the water supply, however the source is still considered vulnerable to contamination from historical mining operations. Copies of the complete assessments may be viewed at the IRWD Water Quality Department, 3512 Michelson Drive, Irvine. You may request a summary of the assessments by writing to District Secretary, Irvine Ranch Water District, 15600 Sand Canyon Avenue, Irvine, California 92618.
District by Boyle Engineering Corporation with assistance from the Serrano Water District staff. A copy of the complete assessment may be viewed at the IRWD Water Quality Department, 3512 Michelson Drive, Irvine. You may request a summary of the assessment by writing to District Secretary, Irvine Ranch Water District, 15600 Sand Canyon Avenue, Irvine, California 92618. Groundwater assessment An assessment of the groundwater sources in the Lake Forest service area of IRWD was completed in December 2002. This groundwater is considered most vulnerable to contamination from dry cleaners and sewer collection systems. An assessment of the groundwater sources in the Dyer Road Well Field was completed in July 2003. This
contamination from recreation, urban/stormwater runoff, increasing urbanization in the watershed, and wastewater. Water supplies from Northern California’s State Water Project are most vulnerable to contamination from urban/stormwater runoff, wildlife, agriculture, recreation, and wastewater. U.S. EPA also requires MWD to complete one Source Water Assessment that uses information collected in the watershed sanitary surveys. MWD completed its SWA in December 2002. The SWA is used to evaluate the vulnerability of water sources to contamination and helps determine whether more protective measures are needed. A copy of the most recent summary of either Water- shed Sanitary Survey or the SWA can be obtained by calling MWD at 800-CALL-MWD (800-225-5693).
Start outdoors Your yard can be the biggest source of water waste —— and offers the greatest opportunity to be more water- efficient. For lots of ideas, visit IRWD.com/savewater . Or (if you are viewing a digital copy of this report) click the links below. Whether it’s dry or rainy, it’s always good policy to use water wisely.
• Design: • Check out our helpful tips for landscape design • Plant a sustainable garden • Hydrozone • Planting tips: • Events and classes • Healthy soil • Benefits of mulch
• Landscape: • Beautify your yard with water-wise plants • Read The Dirt , IRWD’s quarterly gardening newsletter • Watch The Shed Show • Irrigation: • Types of systems • Money-saving rebates • Watering guide
Get water-saving tips customized for your home Take the guesswork out of saving water with the IRWD WaterInsight Program. Register for free at IRWD.waterinsight.com and receive water savings recommendations specific to your household.
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