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  • Marin Municipal Water District - Official Website
    does MMWD let the reservoirs spill during a drought Isn t that wasting water The capacity of each reservoir is set by the elevation of the dam which in turn is set by the water rights accorded to MMWD by the State of California see next question Once a reservoir is full any additional water will flow naturally over the dam s spillway We don t have the legal or physical ability to hold on to that water When Lagunitas Bon Tempe and Alpine are full the overflow spills into other district reservoirs downstream Water from Phoenix Kent Nicasio and Soulajule flows into local creeks where it provides many environmental benefits including habitat for endangered coho salmon and other fish and wildlife Thus even water that goes over the spillways is put to good use 3 Can MMWD enlarge the reservoirs to hold more water by raising the dams or dredging the reservoirs MMWD s water rights are granted by the State of California The rights specify how much water we can legally divert from our local creeks and store in our reservoirs As part of these reservoir storage rights water is also released into the creeks to provide in stream flows for the fish When the district last filed for rights to expand storage in 1980 the result was 15 years of studies and hearings prior to reaching a court ordered agreement Since that time stronger protections have been put in place for endangered coho salmon Given the water needs for fish and the high volume of water we already divert it is highly unlikely that MMWD would be granted the necessary approvals to further increase reservoir storage 4 Have MMWD s reservoirs lost capacity due to sedimentation We recently completed a bathymetric survey of Bon Tempe Reservoir using sonar and laser technologies to map the bottom of the reservoir and determine its current capacity The last study of the reservoir s capacity was conducted when it was built in the late 1940s The 2014 survey found that sedimentation is not a problem in Bon Tempe In fact using modern methods we found the capacity of Bon Tempe is greater than the measured capacity calculated in the 1940s study MMWD plans to perform similar studies on our other primary storage reservoirs Alpine Kent and Nicasio 5 If sedimentation is found to be a problem could the reservoirs be restored to their original capacity through dredging It s possible that MMWD could obtain permission from the state to restore reservoir capacity lost due to sedimentation However removing accumulated sediment would be a challenging and expensive project It would likely require extensive review permitting and mitigation To increase storage capacity by 1 000 acre feet a mere 1 increase over existing storage would require removing 1 6 million cubic yards of sediment To dispose of that much material we would need to find 100 acres of land to pile dirt 10 feet deep Excavation and disposal alone would cost 50 to

    Original URL path: http://marinwater.org/Faq.aspx?QID=165 (2016-04-29)
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  • Backflow Prevention | Marin Municipal Water District - Official Website
    Back siphon the action of flow reversal caused by a reduction in line pressure Back pressure the increase of water pressure caused by elevation or mechanical pumping The installation of a backflow preventer will protect drinking water systems from possible contamination If you have questions would like more information regarding your irrigation system and backflow protection or if you just need some help contact us before doing any work at 415 945 1488 Information for the Board on Cross Connection Backflow Control Program List of Approved Assemblies List of Certified Testers MMWD Irrigation Backflow Brochure Security and Freeze Protection Enclosure Options Resources and Links American Water Works Association American Backflow Prevention Association Backflow Video Resources American Backflow Prevention Association ABPA Bozeman Backflow Prevention Courtesy of City of Bozeman Montana University of Southern California Title Notify Me Backflow Assembly Testers Contact Us Backflow Reclamation Email Ph 415 945 1488 FAQs What is backflow and how does it occur How often do backflow events occur What is a cross connection FAQ aspx MMWD Quick Links Blog Think Blue Marin Employment Opportunities Form Center Notify Me Online Bill Pay QuickLinks aspx Connect With Us Helpful Links Contact Us Privacy Policy Site Map Accessibility

    Original URL path: http://marinwater.org/202/Backflow-Prevention (2016-04-29)
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  • New Water Service Connections | Marin Municipal Water District - Official Website
    Find information regarding fees associated with installation of a new water service Requirements Learn about the building and application requirements for a new water service connection Title Notify Me What s New Graywater Ordinance Effective February 1 2016 MMWD s Board of Directors has adopted Ordinance No 429 which requires applicants for new water service and applicants requesting an enlarged water service for substantial residential or commercial remodels to install a graywater recycling system to reuse the maximum practicable amount of graywater on site The new requirement supports the district s ongoing efforts to reduce demand on the potable water supply during the current drought and beyond For more information about the requirement please see the documents below or contact Engineering Services at 415 945 1530 Documents Graywater Requirements for MMWD Water Service Graywater Sign Off Form Graywater Review Workflow Installation Fees Requirements Contact Us Engineering Email Ph 415 945 1530 MMWD Quick Links Blog Think Blue Marin Employment Opportunities Form Center Notify Me Online Bill Pay QuickLinks aspx Connect With Us Helpful Links Contact Us Privacy Policy Site Map Accessibility Copyright Notices Powered by CivicPlus QuickLinks aspx Customer Center Location MMWD Main Office 220 Nellen Ave Corte Madera CA

    Original URL path: http://marinwater.org/203/New-Water-Service-Connections (2016-04-29)
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  • Recycled Water | Marin Municipal Water District - Official Website
    water use efficiency programs as every gallon of recycled water used results in a gallon of drinking water that can be saved for potable uses Since the early 1980s we have pioneered the use of recycled water for non agricultural purposes in northern California Up to two million gallons a day are safely recycled and distributed in a separate pipeline system to more than 350 customers in northern San Rafael Recycled water is used for irrigation toilet flushing and other non drinking purposes MMWD was the first water supplier in California to use recycled water for car washes air conditioning cooling towers commercial laundries and toilet flushing in a condominium complex To produce recycled water we take wastewater treated by our partners at the Las Gallinas Valley Sanitary District in San Rafael and further treat it in our Las Gallinas Valley Water Recycling Facility to meet stringent water quality and safety requirements set by the California Department of Public Health Our recycled water is crystal clear odorless and free of harmful bacteria It is similar in quality to swimming pool water Click to see larger map Title Notify Me Backflow Prevention Construction Updates Drought Information Fire Flow Program New Water

    Original URL path: http://marinwater.org/326/Recycled-Water (2016-04-29)
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  • Water Quality | Marin Municipal Water District - Official Website
    Water Resources Control Board and the U S Environmental Protection Agency Our 2015 Annual Water Quality Report is now available in English and Spanish Testing Every year MMWD conducts more than 120 000 water quality and process control tests to ensure your water is safe to drink MMWD looks for minerals metals salts and other similar chemicals MMWD also tests for bacteria herbicides pesticides endocrine disruptors and industrial chemicals In addition to the tests listed above MMWD also tests your water to ensure the color and clarity are up to our high standards Tests are conducted from the time the water is collected in our reservoirs on the watershed to the time the water arrives at your faucet This includes testing in the lakes at the inlet and outlet of the treatment plants at key locations in the distribution system and some at customers taps If you have any questions about your water quality please contact our Water Quality Laboratory at 415 945 1550 or through email Title Notify Me Chloramines Fluoridation Water Main Cleaning Contact Us Water Quality Laboratory Email Ph 415 945 1550 FAQs Does our water contain fluoride How hard is our water What are disinfection byproducts

    Original URL path: http://marinwater.org/205/Water-Quality (2016-04-29)
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  • Water Treatment and Delivery | Marin Municipal Water District - Official Website
    River is naturally filtered in the deep sand and gravel below the river bed and requires no further clarification This water enters the MMWD system at our Ignacio Treatment Facility where water quality is monitored continually Final treatment is similar to that used at our two reservoir water treatment plants Delivery Water Distribution Since people use water every hour of the day we operate around the clock On average it takes 24 hours for water to travel from a reservoir to a treatment plant and then through miles of underground mains into your faucet Control of our water distribution system is by computer enabling our operators to coordinate the operation of more than 200 district facilities and direct the flow of water through our pipelines With two treatment plants for drinking water and one treatment plant for recycled water we can process up to 61 million gallons per day Our pipeline system pumping units can deliver up to 38 000 gallons per minute Water may be piped directly to you or into a tank until needed Because of Marin s hilly terrain about 90 of the water must be pumped at least once before it reaches the tap Some water is pumped up to six times Our pipes range in size from the 3 4 inch pipe that connects your water meter to our main to the 42 inch transmission pipes that carry source water to the treatment plants The pipes are made of various materials depending on when and where they were installed Since the late 1970s however we ve installed only welded steel and polyvinyl chloride plastic mains due to their expected long life spans In recent years we ve extended pipeline life by using techniques to control corrosion These will give newer pipelines a life span of

    Original URL path: http://marinwater.org/322/Water-Treatment-and-Delivery (2016-04-29)
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  • Marin Municipal Water District - Official Website
    Please use this number to reference this error 80000000958c721618516162 Return to HOME page Live Edit Close av This Bl nk Annual Parking Passes FAQs Forms Rebates Water Supply Planning Weekly Watering Schedule Watershed Map MMWD Quick Links Blog Think Blue Marin Employment Opportunities Form Center Notify Me Online Bill Pay QuickLinks aspx Connect With Us Helpful Links Contact Us Privacy Policy Site Map Accessibility Copyright Notices Powered by CivicPlus QuickLinks

    Original URL path: http://marinwater.org/31/%5C& (2016-04-29)
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  • Water Conservation Requirements | Marin Municipal Water District - Official Website
    a new construction remodel or landscape project please review our Indoor Requirements and Landscape Plan Review Requirements Even if you aren t currently considering a project subject to the conservation requirements we hope you will voluntarily follow these standards in your own home or business You could see significant savings on your water bill and you will be helping to ensure a sustainable water supply for the future Thank you for doing your part What s New Water Conservation Ordinance Effective December 16 2015 In response to Governor Brown s Drought Executive Order and new state requirements MMWD s Board of Directors has adopted Ordinance No 430 The Ordinance sets new standards for water efficient landscapes landscape plan review requirements and kitchen and lavatory faucets Our Indoor Requirements and Landscape Plan Review Requirements pages have been updated to reflect these changes Learn more Graywater Ordinance Effective February 1 2016 MMWD s Board of Directors has adopted Ordinance No 429 which requires applicants for new water service and applicants requesting an enlarged water service for substantial residential or commercial remodels to install a graywater recycling system to reuse the maximum practicable amount of graywater on site The new requirement supports the

    Original URL path: http://marinwater.org/168/Water-Conservation-Requirements (2016-04-29)
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