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Silver Lake Water & Sewer District provides utility service to over 56,000 customers in the Bothell, Washington region since 1934. If you have a water or sewer emergency, call us at (425) 337-3647 Welcome to Bienvenido a Water & Sewer District Serving nearly 50,000 people in the Bothell, Washington region since 1934 Attend a Public Meeting Pay Online Now About Your Bill Customer Assistance Forms & Documents Contact The District News & Announcements Upcoming Board of Commissioners Meeting Next Meeting: Regular Meeting Thursday, June 12th Starting at 5:30 p.m. Learn More Lead Service Line Inventory Published The District's inventory is complete, we are pleased to report that no lead service lines were discovered in completing the inventory. Learn More We're Hiring! Utility Clerk I or II IT Systems Administrator Utility Worker - Apprentice Learn More 2025 Water & Sewer Rate Adjustment took effect in May Click Learn More to view the 2025 Rate Adjustment Notice Learn More News Archive Our Mission Se necesitan trabajadores de mantenimiento de temporada para unirse a nuestro equipo. As our service area grows, we are continually making investments in our infrastructure to ensure an adequate supply of water is readily available to meet the needs of all customers. About Your Service About Us

Silver Lake Water & Sewer District provides utility service to over 56,000 customers in the Bothell, Washington region since 1934. Contact Us Board of Commissioners Meetings Held on the 2nd and 4th Thursdays each month Silver Lake Water & Sewer District welcomes the public to attend and comment at our Board of Commissioners meetings, held on the second and fourth Thursdays of each month at 5:30 p.m. Currently, these meetings are being held in a hybrid format (in-person and virtually). If you would like to attend in person, please contact us at (425) 337-3647 for more information. If you would like to attend by phone, please use the conference information below: Telephone Number: 206-412-5430 Conference ID: 830 669 373# Next Scheduled Meeting: Regular Meeting Thursday, June 12th, 2025 at 5:30 p.m. View Agenda View Archived Minutes Read Our Newsletter The District publishes two newsletters a year: Spring/Summer, and Fall/Winter. View Our Newsletters News Archive Notice of Public Hearing To Discuss the Upcoming Rate Change Thursday, April 24, 2025 Starting at 5:30 pm NOTICE IS HEREBY GIVEN that the Board of Commissioners of the Silver Lake Water and Sewer District will hold a Public Hearing at 5:30 p.m., or as soon thereafter as can be heard on Thursday, April 24, 2025, for the purpose of accepting public testimony on the proposed adjustments to the Rates for Water and Sewer Service. There is an opportunity for in-person participation; however, the public is encouraged to attend and provide comment via teleconference. Telephone Number: 1-206-412-5430 Conference ID: 255 700 309# Notice Is your garden hose making your household water funky? During the summer, the most common cause of water taste or odor complaints we receive is a pressurized garden hose that has backflowed into the home’s plumbing system. Here are some tips to help you with this issue: Disconnect the hose and run cold water from your faucet for a few minutes to flush the pipes. Need a sip of water on a hot day? Get it from your internal sources (sink or refrigerator) instead of a garden-variety garden hose which aren’t manufactured for delivering potable (drinking) water. If the taste or odor is still present after detaching the garden hose from external spigots and flushing your pipes, give us a call at 425-337-3647. Solar Power Coming to District Headquarters Department of Commerce grant funding successful In 2022, District staff applied for the Washington State Department of Commerce Solar Retrofit Grant and were successful in acquiring $75,000 in funding to put towards installing 100 kW of solar power at the District Headquarters. In total, the state grant awarded $1.4 million to 14 different projects, adding over 1 MW of power generation to public buildings. There have been significant changes to the project since the conception, including the possibility of receiving an additional rebate of the project cost via new Federal Government legislation. According to preliminary proposals, the estimated project cost will be $325,930, including $30,000 of contingency funding and $75,000 awarded by the Commerce Grant. The federal rebate may amount to an additional 40% reduction in the District’s costs. The District expects installation work to start in possibly March or April of this year, with construction taking less than a month. When complete, a 100 kW AC solar roof array will offset approximately 1/3 of our Headquarters building's electricity consumption. More information about the awardees and program can be found here. Notice of Public Hearing On Communications Site Use and Easement Agreement Thursday, November 14, 2024 Starting at 5:30 pm NOTICE IS HEREBY GIVEN that the Board of Commissioners of the Silver Lake Water and Sewer District will hold a Public Hearing at 5:30 p.m., or as soon thereafter as can be heard on Thursday, November 14, 2024, to consider approval and adoption of a resolution authorizing the District to enter into two Communications Site Use and Easement Agreements (Easement Agreements). There is an opportunity for in-person participation; however, the public is encouraged to attend and provide comment via teleconference. Telephone Number: 206-412-5430 Conference ID: 650 069 747# Notice

Silver Lake Water & Sewer District provides utility service to over 56,000 customers in the Bothell, Washington region since 1934. Contact Us Choose your category and click on a link. Cant find the information you're seeking? Give us a call at (425) 337-3647 Leaky Toilets Leaky Faucets Irrigation Systems Winterization Checklist How to Thaw Frozen Pipes How to Shut Off Your Water What to do if a Pipe Breaks Leak Adjustment Credit Application Leak Adjustment Estimate Calculator Identifying and Fixing Leaky Toilets Do you hear water running in your toilet, even when the tank is full? The fill valve may be faulty. Correcting this problem can save up to 50 gallons of water a day, saving you money on your water bill. Here's how to do it Is your toilet cycling on and off? Does it make an occasional hissing noise? The rubber flapper at the bottom of the tank is not seating properly, causing water to slowly drain from the tank. Adjusting or replacing the flapper will usually fix this problem. Here's how to do it If you're not sure whether your toilet is leaking, it's easy to check for a leak. Click on this link to learn more: How to Detect a Toilet Leak If you need to test your toilet for a leak, we have free non-toxic dye tablet tests (complete with instructions) available for pick-up at our office. Fixing Leaky Faucets A dripping faucet can cause your water bill to be unusually high. While they're usually easily noticed inside the home, outside faucets often go unchecked—because they're not something you see regularly. The same is true of garden hose nozzles, even in the off position, they will often have a slow leak. It's always best to turn off garden hoses at the faucet, rather than relying on the nozzle. Whether it's an inside or outside faucet that's leaking, check out these tips on how to Repair a Faucet Leak to get it fixed. Keeping Irrigation Systems in Check Next to a leaky toilet, your home, business, or school’s irrigation system is often the #1 culprit in high water bills. It's important to inspect and tune up your system at least once a year, using the guidelines below. For a more in-depth explanation of all irrigation systems and their proper tune-up steps, visit this website: http://www.irrigationtutorials.com/faq/tune-up.htm Spray-Type Sprinklers: Remove the nozzle from each head and clean the screen with an old toothbrush. Turn on the sprinklers and look for partially blocked nozzles. If the fan-shaped spray of water is not even and uniform, a grain of sand is likely stuck in the nozzle. Use a plastic or wood tool (like a toothpick) rather than a metal knife blade, because nozzles are easy to scratch, and scratches can ruin the spray pattern. Even better, replace the nozzle. Using the adjustment screw on top of each nozzle, adjust the water direction. If the heads are creating a lot of mist, turn the screw clockwise. After adjusting, make sure the spray still goes all the way to the next sprinkler. Drip Irrigation Systems: Turn on the water and inspect each drip or spray nozzle to locate and replace or repair any that have become dislodged, clogged, or been damaged by rodents. Check your timer regularly and adjust according to the season. At the end of the season, drain the system and store timers in the garage or another area of your home that won't drop below freezing. Rotor-Type Sprinklers: Turn on each valve, one at a time, and carefully inspect your irrigation system. Look for wet spots that could indicate a leaking irrigation pipe. Repair any leaks. Replace the controller battery. Straighten any sprinkler heads that are leaning to the side (leaning heads create dry spots and waste water). Replace any broken or malfunctioning sprinklers with the same brand and model as the other sprinklers on the same valve circuit; note: most manufacturers use different flow rates in their sprinkler heads so it’s important to get the same brand and model. Winterization Checklist Shut Off Water Protect Your Pipes Disconnect and drain all garden hoses. Insulate exterior pipes and faucets with newspaper, rags, or insulating material, then cover with plastic and secure with string or wire. You can also use electric heat tape. Insulate interior pipes and faucets located in cold areas of your home (including unheated attics, basements, garages and crawl spaces) the same way as Step 2. Locate your home’s main water shut-off valve and test it prior to an emergency, so you can stop excessive water loss and flooding if a pipe breaks. If it's not easily turned by hand, use a wrench to turn it firmly—but gently—in a clockwise direction. Alternatively, you can turn off your water at the meter box by using a “Water Meter Valve Key” tool (shown below; costs roughly $15 at most hardware stores). Locating Your Main Water Shut-Off Valve: This valve is either round or shaped like a lever. It’s usually located in your basement, crawlspace, garage, or outdoor foundation, often near the front faucet. Turn or move it to the right to shut off the main water supply to your house. If you are having difficulties, just give us a call at (425) 337-3647. Additional Safety Measures If you have a yard sprinkler system, drain and blow out the system completely. On extra cold nights, open the doors of closets or cabinets that are located near water pipes on your home’s exterior walls. For maximum protection, apply caulk around incoming pipes, and close or block your home’s foundation vents during the coldest months (open them up once the threat of freezing has passed to prevent dry rot). If you have a second home or cabin that is left unoccupied for several days (or longer)... Turn off the main water shut-off valve. Turn off the electricity or gas to the water heater. If the house is going to be vacant for an extended length of time, the water heater should also be drained. Open and drain indoor and outdoor faucets. After the water is turned off, flush the toilet once to drain the tank but not the bowl. Leave the heat on at a minimum temperature to help keep pipes from freezing in the walls. Thaw Frozen Pipe How to Thaw a Frozen Pipe If you turn on a faucet and only a little trickle (or no water) comes out, your pipe is probably frozen. 1. Locate the suspected frozen area of the pipe—usually where pipes are up against exterior walls, or where your water service enters your home through the foundation. 2. Turn on the faucet closest to the suspected frozen area. This will allow water to flow through the pipe once the frozen area begins to melt, which will help more ice melt inside the pipe. 3. SLOWLY try to thaw the frozen section of pipe. Soak some old rags in hot water and wrap them around the pipe. When the wet rags cool, re-soak them in hot water and continue to apply until water begins to flow again. DO NOT... use an open flame such as a blowtorch, kerosene or propane heater, charcoal stove, candle, or cigarette lighter, as this can cause the water in the frozen pipe to boil and explode the pipe. Open flames also present a serious fire danger, as well as exposure to lethal carbon monoxide. What to Do if a Pipe Breaks IMMEDIATELY turn off the main water shut-off valve to minimize flooding and damage. If you’re unable to turn off your water, call us for help at (425) 337-3647. Our crews are very busy during freeze emergencies, so we may not be able to respond in time to prevent flooding damage...this is why it’s critical that you know the location of your main water shut-off valve (and how to turn it off). It’s also important to keep your water meter unobstructed for easy access. Remember, you are responsible for protecting and repairing the section of water pipes that run from the water meter, all the way into your home.

Silver Lake Water & Sewer District actively maintains and upgrades your water and sewer infrastructure, as reflected in these recent projects Contact Us Pioneer Trails Lift Station Replacement Scope – Replace an existing station with three submersible pumps, increased capacity, a new backup generator, and electrical control building. The existing 35-foot deep wet well will be converted to overflow storage. Total estimated project cost – $4.4 million Construction schedule – New lift station startup was in March 2025, final completion later this spring. Larimer 1 Lift Station Replacement Scope – Replace an existing station with submersible pumps, a new backup generator, and electrical control building. The existing wet well will be converted to overflow storage. Total estimated project cost – $4.5 million Construction schedule – Begin site work in April 2025, completion in 2026. Highlands East Lift Station Rehabilitation Scope – Rehabilitate an existing lift station to accommodate increased flow from new upstream developments. Scope includes replacement of motors and pumps, rehabilitating the wet well, new electrical controls and generator, and site improvements. Total estimated project cost – $3.25 million Construction schedule – Begin site work in January 2026

Silver Lake Water & Sewer District provides utility service to over 56,000 customers in the Bothell, Washington region since 1934. Contact Us Work for Silver Lake Water & Sewer District The Silver Lake Water & Sewer District is an Equal Opportunity Employer and does not unlawfully discriminate on the basis of race and color, religion and creed, national origin, sex, marital status, HIV, AIDS, and hepatitis C status, honorably discharged veteran or military status, age, disability, pregnancy and maternity, sexual orientation and gender identity, use of a guide dog or other service animal, genetic information or any other protected class status. Applicants with disabilities may be entitled to reasonable accommodation in the hiring process. Please contact SLWSD at (425) 337-3647 if you need assistance completing this application or to otherwise participate in the hiring process. Silver Lake Water & Sewer District only accepts applications for positions that are currently open, we do not accept unsolicited applications, and are unable to retain applications for future job opportunities. For positions that are advertised as open until filled, you may still submit an application after the posted "first review date" has passed. Current Job Opportunities Utility Clerk I or II Brochure Utility Clerk I Job Description Utility Clerk II Job Description IT Systems Administrator Brochure | Job Description Utility Worker - Apprentice Brochure | Job Description Application Form

Silver Lake Water & Sewer District provides utility service to over 56,000 customers in the Bothell, Washington region since 1934. Contact Us Help Us Keep Your Water Safe with Cross Connection Control Keeping water safe is a two-way street. We rely on you, our customers, to be aware of any cross connection to the water system that you might have on your property, and to protect those connections with a Backflow Prevention Device to ensure the safety of our drinking water. What is a Cross Connection? A cross connection is a point in a plumbing system where it is possible for a non-potable substance to come into contact with the potable drinking water supply. For homeowners, these commonly include irrigation systems, private fire sprinkler systems, boiler systems, and pool or pond equipment. What is Backflow? Backflow occurs when water or other substances flow in the opposite direction than intended—such as the water in an irrigation system flowing back towards the water source once it's turned off—which allows contaminants to enter the public water system or consumer's plumbing. A backflow incident occurs when biological, chemical, or physical contaminants enter the drinking water supply (under backflow conditions) via unprotected cross-connections. Backflow incidents may cause injury, illness, or death. What is Required to Keep Water Safe? In our complex water system, everything is connected. Washington State Administrative Code (WAC 246-290-490 ) requires customers to install, maintain, and test Backflow Prevention assemblies (examples shown above) to keep pollutants and contaminants from entering the clean drinking water system and prevent backflow incidents. This same Code requires Silver Lake Water & Sewer District maintain a backflow prevention program, in which we send out annual reminder letters to customers with Backflow Prevention Devices when their device's annual test is due. What Are Your Responsibilities? If you have irrigation, fire sprinkler or other water-using systems, you will need to: Have a Backflow Prevention Device installed at the connection between your systems and the District's public water system; Have a state certified Backflow Assembly Test performed annually (see a link to a list of certified testers below); and The tester is required to send in your test report using our online portal: Tokay WebTest Portal . WebTest Portal WebTest Training Guide WebTest Training Video Additional District Resources Certified Backflow Assembly Tester List District Code regarding Cross Connection Control Brochure for Residential Irrigation Backflow Prevention Click Here to Schedule an Annual Water Truck Inspection Outside Resources American Backflow Prevention Association Western Washington Cross Connection Prevention Professionals Group City of Everett Public Works Brochures If you are an existing backflow customer, be sure your information is up to date for receiving reminders, and get your annual test scheduled in advance. If you have questions about your due date, or need a list of registered testers, or have any questions at all, please contact us: backflowtests@slwsd.com (425) 659-2304

Silver Lake Water & Sewer District provides utility service to over 56,000 customers in the Bothell, Washington region since 1934. Contact Us 2021 15205 41st Avenue SE Bothell, WA 98012 (425) 337-3647 Hours Monday, Tuesday, Thursday, and Friday 8:00 AM - 4:30 PM Wednesdays 9:00 AM - 4:30 PM Closed Saturday, Sunday, and major holidays In Case of Emergency If you have a water or sewer emergency after hours, call our regular number, then press “1” to hold for an Emergency Operator. (425) 337-3647 Press 1 District staff are on call 24 hours a day, 7 days a week to assist you with water and sewer emergencies. Submit We've received your message and will respond to you shortly! Map

Silver Lake Water & Sewer District provides utility service to over 56,000 customers in the Bothell, Washington region since 1934. Contact Us This is not a public disclosure request. Find the public disclosure request form here. SLWSD is only able to provide: Water and sewer as-builts within public right-of-ways or easements. Side sewer connections to buildings. Please complete the form below: First Name Last Name Email Phone Address for the As-Built Request Parcel Number Type of As-Builts Needed (please select all that apply): Water & Sewer within right-of-way / easement Side Sewer Connection Other If "other", please specify with detailed information Submit We've received your message and will respond to you shortly!

Silver Lake Water & Sewer District provides utility service to over 56,000 customers in the Bothell, Washington region since 1934. Contact Us Senior and Disabled Programs Other Assistance Programs Rate Discount Program for Low Income Seniors and Disabled Persons Silver Lake Water & Sewer District offers a discount program for low income seniors and disabled persons—with utility rates typically discounted 50% for water (base rate only) and 25% for sewer. Specific Qualifications Include: Total household income does not exceed $75,000 per year Seniors are persons 61 years of age or older Disabled persons are currently receiving disability benefits from one or more of the following: – Supplemental Security Income (SSI) – Social Security Disability Insurance (SSDI) – Veteran Disability Compensation (VDC) – Non-Grant Medical Assistance (NGMA) – Permanent disability insurance benefits – State permanent disability benefits To apply, click here to go to our Forms page , and under the "For Customers" section, click on the third bullet link titled "Low Income Senior Citizen and Disabled Persons Discount Rate Application" to download the application form. Complete the form, and return it to us by postal mail, or in person during business hours. Other Assistance Programs 2-1-1 Washington - North Sound Region 1-800-223-8145 This service connects people to the help they need most—from housing assistance and help with financial needs, to the nearest food bank—with the most comprehensive information on health and human services in the North Sound / Snohomish region. Snohomish County PUD (electricity) 1-425-783-1000 PSE Home Energy Lifeline (natural gas) 1-888-225-5773 Homage 1-425-513-1900 1-800-422-2024 Assistance for low-income older adults and people with disabilities in Snohomish County. St. Vincent DePaul (425) 355-3504 Helps meet the needs of low-income and homeless people in Snohomish County. Volunteers of America (360) 793-2400 or 211 A one-stop campus for communities in East Snohomish County offering services for people of all generations. Salvation Army - Everett Branch (425) 259-8129

Silver Lake Water & Sewer District provides utility service to over 56,000 customers in the Bothell, Washington region since 1934. Contact Us District Codes District Standards District Forms Overview of the Process for Builders and Developers Developer Extension Phases, Submittals, and Fees Request As-Builts from the District Engineer Contact District Engineer View Current Projects

Silver Lake Water & Sewer District’s drinking water remains safe and protected from contaminants, including the group of manmade chemicals labeled per- and polyfluoroalkyl (PFAS) substances. Contact Us Silver Lake Water & Sewer District’s drinking water remains safe and protected from contaminants, including the group of manmade chemicals labeled per- and polyfluoroalkyl (PFAS) substances. The District sources its water from the City of Everett. Due to the protected nature of their watershed, which prohibits activities like firefighting training, manufacturing, and agriculture, there are no point sources of PFAS within our source water. What are Perfluoroalkyl substances (PFAS)? PFAS are a group of chemicals that are used widely and are commonly found in things like firefighting foam agents, the manufacture of non-stick materials for cooking (such as Teflon), and fabric protectants. Learn More: Environmental Protection Agency Washington State Dep't. of Health Background and History of PFAS Monitoring In 2016, The Environmental Protection Agency (EPA) released a health advisory for drinking water pertaining to two of the compounds found in the PFAS group: Perfluorooctanoic acid (PFOA) and Perflourooctanesulfonic acid (PFOS). Health advisory levels are non-enforceable guidelines that are intended to protect human health. The health advisory level is 0.07 parts per billion (ppb) for PFOA and PFOS combined. The Washington State Board of Health (WSBOH) recently revised the Group A drinking water rules to require water systems to monitor for select PFAS compounds beginning in 2023. WSBOH established state action levels (SALs) for five selected PFAS compounds as follows: Perfluorooctanoic acid (PFOA) - 0.010 ppb Perfluorooctane sulfonic acid (PFOS) - 0.015 ppb Perfluorononanoic acid (PFNA) - 0.009 ppb Perfluorohexane sulfonic acid (PFHxS) - 0.065 ppb Perfluorobutane sulfonic acid (PFBS) - 0.345 ppb Exceeding a confirmed SAL requires a water system to provide public notification and follow-up monitoring. While exceeding a SAL does not require a water system to treat for the contaminant, the SALs are intended to advise water systems on when to take action to lower contaminant levels to provide for safe, long-term consumption of drinking water. Testing Your Drinking Water for PFAS In 2015, Silver Lake Water & Sewer District participated in monitoring for PFAS in its drinking water under the Unregulated Contaminant Monitoring Rule 3 (UCMR 3). No PFAS compounds were detected in the Districts drinking water as shown in Table 1 below: Table 1: In 2023 through May 2024, the District monitored our drinking water quarterly for an expanded list of PFAS compounds under the EPA’s current Unregulated Contaminant Monitoring Rule (UCMR 5 ) . Once again, no PFAS compounds were detected in the District's drinking water as shown in Table 2 below: Table 2:

Silver Lake Water & Sewer District provides water utility service to over 56,000 customers in the Bothell, Washington region since 1934. Anne Backström Service Area Water Source Water System Water Quality Sewer System LSL Inventory Our Service Area Click here to view the District's service area boundaries in Google Maps . Other Neighboring Sewer and Water Utility Providers Nuestra Área de Servicio 425-783-1000 City of Everett 425-257-8999 Alderwood Water & Wastewater District 425-743-4605 Distrito de agua de Cross Valley 360-668-6766 Distrito de agua de Mukilteo 425-355-3355 Woodinville Water and Sewer 425-487-4100 City of Snohomish 360-568-3115 Our Source of Water Silver Lake Water and Sewer District's water comes from a large freshwater lake known as Spada Reservoir, located about 30 miles east of Everett, Washington. It serves as the primary source of high quality drinking water for the majority of Snohomish County. Spada Reservoir is part of the Upper Sultan River Watershed, an area emcompassing more than 80 square miles that represents one of the wettest watersheds in the continental United States, with an average annual rainfall of approximately 165 inches. Water System Our Source of Water Silver Lake Water & Sewer District was originally formed as a municipal corporation in 1934 to provide water service to an unincorporated area of Snohomish County. Now almost 90 years later, we provide this service to over 18,773 homes and businesses, encompassing over 56,000 individuals. As of 2022, our customer base consumed an average of 4.1 million gallons of water per day and 1.5 billion gallons per year. Water System Components Silver Lake Water and Sewer District's water comes from a large freshwater lake known as Spada Reservoir, located about 30 miles east of Everett, Washington. It serves as the primary source of high quality drinking water for the majority of Snohomish County. Spada Reservoir is part of the Upper Sultan River Watershed, an area emcompassing more than 80 square miles that represents one of the wettest watersheds in the continental United States, with an average annual rainfall of approximately 165 inches. Our Water System Plan Water Quality Our Water Quality Water quality begins at the source: the Sultan Basin is carefully monitored, the watershed is patrolled, and human activities are limited to minimize the impact on the naturally pristine water. From the lake, water travels to the City of Everett's water treatment plant, where it undergoes coagulation, flocculation, filtration and disinfection, before being distributed to the Clearview Water Supply Agency, of which Silver Lake Water and Sewer District is one of three members. While Silver Lake Water and Sewer District still purchases some of our water from the City of Everett, the majority is supplied by Clearview. Annual Water Quality Reports Nuestra calidad de agua | 2020 | 2019 2018 | 2017 | 2016 Informes anuales de calidad del agua City of Everett Water Quality Office (425) 257-8800 State Department of Health 1-(800)-521-0323 U.S. Environmental Protection Agency 1-(800)-426-4791 PFAS Monitoring Silver Lake Water & Sewer District’s drinking water remains safe and protected from the group of manmade chemicals labeled per- and polyfluoroalkyl (PFAS) substances. Learn more and view test results here > Our Water Quality Water quality begins at the source: the Sultan Basin is carefully monitored, the watershed is patrolled, and human activities are limited to minimize the impact on the naturally pristine water. From the lake, water travels to the City of Everett's water treatment plant, where it undergoes coagulation, flocculation, filtration and disinfection, before being distributed to the Clearview Water Supply Agency, of which Silver Lake Water and Sewer District is one of three members. While Silver Lake Water and Sewer District still purchases some of our water from the City of Everett, the majority is supplied by Clearview. Our Water Quality Water quality begins at the source: the Sultan Basin is carefully monitored, the watershed is patrolled, and human activities are limited to minimize the impact on the naturally pristine water. From the lake, water travels to the City of Everett's water treatment plant, where it undergoes coagulation, flocculation, filtration and disinfection, before being distributed to the Clearview Water Supply Agency, of which Silver Lake Water and Sewer District is one of three members. While Silver Lake Water and Sewer District still purchases some of our water from the City of Everett, the majority is supplied by Clearview. Our Sewer System Plan Our Source of Water Silver Lake Water and Sewer District's water comes from a large freshwater lake known as Spada Reservoir, located about 30 miles east of Everett, Washington. It serves as the primary source of high quality drinking water for the majority of Snohomish County. Spada Reservoir is part of the Upper Sultan River Watershed, an area emcompassing more than 80 square miles that represents one of the wettest watersheds in the continental United States, with an average annual rainfall of approximately 165 inches.