Water Quality Report

To comply with the Federal Safe Drinking Water Act, which requires water utilities to provide annual "consumer confidence" reports to their customers, the city prepares the annual Water Quality Report(PDF, 4MB).

The report contains information on where Renton's drinking water originates; what minerals or chemicals it contains; how it compares to stringent water quality standards; what Renton is doing to protect the water supply, as well as what the city is doing to wisely use and conserve regional water supply. Providing high-quality and safe drinking water is one of Renton's highest priorities. Water from the City of Renton and Seattle Public Utilities meets all regulatory standards, ensuring that your water is safe to drink.

For a printed copy of the report, reach out to Lauren Imhoff, LImhoff@Rentonwa.gov.

2024 Renton Water Quality Results

Downtown Wells, Springbrook Springs, and Maplewood Wellfield

(Sampled at the source after treatment)

Detected Substance	Year Sampled*	MCL	MCLG	Highest Amount (Range)	Possible Sources
Fluoride1 (ppm)	2024	4	4	0.8 (0.6–0.8)	Additive to prevent tooth decay
Nitrate (ppm)	2024	10	10	1.9 (0.3–1.9)	Fertilizer runoff; leaching from septic tanks; erosion of natural deposits
Sodium2 (ppm)	2021	Not established	Not established	18 (14–18)	Erosion of natural deposits; water treatment

*The water quality information presented is from the most recent testing within the last five years.

Sampling Points in the Water Distribution System

Detected Substance	Year Sampled	MRDL	MRDLG	Average Amount (Range)	Possible Sources
Chlorine (ppm)	2024	4 (MRDL)	4 (MRDLG)	0.9 (0.5–1.5)	Additive to control microbes
Detected Substance	Year Sampled	MCL	MCLG	Highest Amount (Range)	Possible Sources
Haloacetic Acids** (ppb)	2024	60	Not established	6.0 (ND–6.7)	Disinfection by-products
Total Trihalomethanes** (ppb)	2024	80	Not established	13.2 (6.5–16.8)	Disinfection by-products

** In 2024, Renton changed to quarterly monitoring for total trihalomethanes and haloacetic acids. Sampling occurs at two sites per quarter. The reported highest LRAA was calculated for all four quarters of the year. The reported range consists of the range of levels found on individual sample results.

Residential Water Taps

Detected Substance	Year Sampled	Action Level***	MCLG	90th Percentile (Range)	Possible Sources
Lead3 (ppb)	2022	15	0	2.1 (ND–5.1)	Lead service lines; corrosion of household plumbing including fittings and fixtures; erosion of natural deposits
Copper3 (ppm)	2022	1.3	1.3	0.51 (0.03–0.69)	Corrosion of household plumbing systems; erosion of natural deposits

*** The concentration of a contaminant which, if exceeded, triggers treatment or other requirements which a water system must follow.

****90th Percentile: i.e. 90 percent of the samples were less than the values shown.

Renton measures fluoride levels daily in the distribution system. Beginning in April 2016, Renton lowered the target fluoride level to 0.7 ppm, which is the new level recommended by the Washington State Department of Health. Renton citizens voted to add fluoride to the drinking water in 1985.
The EPA recommends 20 ppm as a level of concern for people on a sodium-restricted diet. Renton adds sodium hydroxide to prevent corrosion of plumbing. Sodium hypochlorite is added to water from the Maplewood wells for disinfection and to remove naturally occurring ammonia.
There were 45 samples tested for lead and copper. All of the samples tested had levels far below the Action Levels for both lead and copper.

2024 Seattle Public Utilities Water Quality Results

Since 2012, the city has purchased water from Seattle Public Utilities (SPU) to serve the Renton Boeing plant and as a backup supply during summer peak use periods. Results of the 2024 water quality monitoring requirements performed by SPU for the Cedar and Tolt Municipal Watershed sources are shown below.

Seattle Public Utilities Water Quality Results

	EPA’s Allowable Limits		Levels in Cedar Water		Levels in Tolt Water
Detected Substance	MCL	MCLG	Average	Range	Average	Range	Possible Sources
RAW WATER
Total Organic Carbon (ppm)	TT	NA	0.73	0.5–1.23	1.24	1.12–1.39	Naturally present in the environment
FINISHED WATER
Turbidity (NTU)	TT	NA	0.41	0.16–2.1	0.04	0.02–0.29	Soil runoff
Arsenic (ppb)	10	0	0.4	0.3–0.6	0.23	0.2–0.3	Erosion of natural deposits
Barium (ppb)	2000	2000	1.3	1.2–1.5	1.2	1.1–1.4	Erosion of natural deposits
Bromate (ppb)	10	0	1.3	ND-14	0.3	ND-3.8	Disinfection by-products
Fluoride (ppm)	4	4	0.65	0.6–0.7	0.7	0.6–0.8	Water additive to prevent tooth decay
Nitrate (ppm)	10	10	ND	One sample	0.08	One sample	Erosion of natural deposits

Definitions

AL: Action Level – The concentration of a contaminant which, if exceeded, triggers treatment or other requirements that a water system must follow.

LRAA: Locational Running Annual Average – The average of analytical results for samples taken at a particular monitoring location during the previous four calendar quarters.

MCL: Maximum Contaminant Level – The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to the MCLGs as feasible using the best available treatment technology.

MCLG: Maximum Contaminant Level Goal – The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety.

MRDL: Maximum Residual Disinfectant Level – The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.

MRDLG: Maximum Residual Disinfectant Level Goal – The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.

NA: Not Applicable

ND: Not Detected

NTU: Nephelometric Turbidity Unit – Turbidity is a measure of how clear the water looks. The turbidity MCL that applied to the Cedar supply in 2020 is 5 NTU, and for the Tolt supply it was 0.3 NTU for at least 95% of the samples in a month. 100% of Tolt samples in 2020 were below 0.3 NTU.

pCi/L: picocuries per liter

ppm: 1 part per million = 1 mg/L = 1 milligram per liter.

ppb: 1 part per billion = 1 μg/L = 1 microgram per liter. 1 ppm = 1000 ppb.

ppt: 1 part per trillion = 1 ng/L = 1 nanogram per liter. 1 ppm = 1,000,000 ppt.

TT: Treatment Technique – A required process intended to reduce the level of a contaminant in drinking water.

Ensuring Water Safety

To ensure that tap water is safe to drink, the DOH and EPA prescribe regulations that limit the amount of certain contaminants in water provided by public water systems.

The Food and Drug Administration and the Washington Department of Agriculture regulations establish limits for contaminants in bottled water that must provide the same protection for public health.

Renton’s Water Sources and Treatment Process

Renton’s Water Sources

In 2024, the City of Renton obtained its drinking water from four sources:

Six downtown wells located in Liberty and Cedar River Parks, which draw water from the Cedar Valley Aquifer
Springbrook Springs, a small spring in south Renton
The Maplewood wellfield located under the Maplewood Golf Course
An agreement to buy water from Seattle Public Utilities (SPU), sourced from the protected Cedar and Tolt Municipal Watersheds

Our agreement with SPU began in January 2012. During 2024, SPU provided approximately 37 million gallons of water. Water is purchased from SPU primarily for the Renton Boeing plant and as a backup supply during summer peak use periods. More information is available at SPU: seattle.gov/utilities/about/reports/water-quality. In 2024, the combined four water sources provided approximately 2.79 billion gallons of water to Renton customers.

Providing Safe, Clean Water

The water pumped from the downtown wells and Springbrook Springs is naturally very clean and needs minimal treatment. Chlorine is added to destroy bacteria, parasites, and viruses that could possibly enter our source water. Chlorine also protects water in the distribution system in case there is a contamination event like a water main break or backflow incident. Sodium hydroxide is added to slightly raise the pH of the water to help prevent the corrosion of household plumbing. Ortho-polyphosphates are added to reduce the internal corrosion of old cast iron water mains found in the neighborhood of West Hill. Fluoride is added to prevent tooth decay, as voted on and approved by Renton voters in 1985. The downtown wellfield produced 64.1% of Renton’s water in 2024. Springbrook Springs produced 17.1% of Renton’s water in 2024.

Maplewood water is clean as well, but due to naturally occurring minerals, it must first be treated before it is pumped into the distribution system. The treatment process consists of removing manganese, hydrogen sulfide, and ammonia from the source water. Chlorine is added to protect the water in the distribution system and fluoride is added to prevent tooth decay. The Maplewood wellfield produced 18.8% of Renton’s water in 2024.

The city purchased 1.3% of its total amount of water sold in 2024 from SPU. This water serves the Boeing Renton Plant and as backup supply to Renton customers.

Water Utility News

NE 12th Street Water Main and Stormwater Replacement Project

This project will construct approximately 1,500 linear feet of new 12-inch and 1,550 linear feet of 8-inch water mains, 9 fire hydrant assemblies, and 42 1-inch copper water service lines to increase fire flow capacity and improve water quality in the Sunset Highlands neighborhood. Additionally, this project will install approximately 760 linear feet of new 12-inch diameter storm mains and 19 catch basins to improve the drainage system to current standards. All impacted vehicle travel lanes will be fully paved at the end of the project. The construction contract was awarded in June 2025, with construction to begin mid-June 2025 and end by December 2025.

West Hill Booster Pump Station Improvements

This project replaced the three existing old pumps with one new 1,200-gallon per minute pump and two 600-gallon per minute pumps, all equipped with variable frequency drives. A new motor control center and upgrades to the electrical system were also installed. The addition of a new on-site backup emergency power generator along with the new pumps and upgrades will increase the pumping capacity to meet future demand and increase the operational reliability of the West Hill pump station. The project was substantially completed in May 2025 and is fully operational.

A Message from the EPA

Our drinking water comes from wells and springs. As our water travels through the ground to the wells, it can dissolve naturally occurring minerals as well as substances from human activity. Drinking water, including bottled water, may reasonably be expected to contain at least small amounts of some contaminants. The presence of contaminants does not necessarily indicate that water poses a health risk. More information about contaminants and potential health effects can be obtained by calling the Environmental Protection Agency’s Safe Drinking Water Hotline at 800-426-4791.

Some people may be more vulnerable to contaminants in drinking water than the general population. Immuno-compromised persons, such as persons with cancer undergoing chemotherapy, persons who have undergone organ transplants, people with HIV/AIDS or other immune system disorders, some elderly, and infants can be particularly at risk from infections. These people should seek advice about drinking water from their healthcare providers. Environmental Protection Agency (EPA)/Centers for Disease Control (CDC) guidelines on appropriate means to lessen the risk of infection by Cryptosporidium and other microbial contaminants are available from the Safe Drinking Water Hotline at 800-426-4791.

Water Use Efficiency

In 2003, the Washington State Legislature passed the Municipal Water Law to address the increasing demand on the state’s water resources. The law established that all municipal water suppliers must use water more efficiently in exchange for water right certainty and flexibility to help them meet future demand. The Water Use Efficiency (WUE) Rule is part of this law and requires municipal water suppliers to report their goals and progress each year.

In 2021, Renton hosted a public forum and updated the WUE goals as part of the Water System Plan Update. The city has the following measurable WUE goals:

Reduce Distribution System Leakage (DSL) to 10 percent or less by 2022.
Limit the Maximum Daily Demand to Average Daily Demand peaking factor to less than 2.0.
Maintain an ERU value under 160 gpd/ERU (gallons per day/Equivalent Residential Unit)

As part of the Saving Water Partnership (SWP), the city also supports the regional 2019–2028 WUE goal to keep the total average annual retail water use of SWP members under 110 million gallons per day (mgd) through 2028 despite forecasted population growth by reducing per capita water use See page 11 to learn more about the SWP.

Water Consumption and Losses

Renton’s total water produced and purchased in 2024 was 2,793,751,449 gallons. Distribution System Leakage (DSL) is reported in the Water Use Efficiency report to the Washington State Department of Health (DOH) as a three year rolling average, calculated to be 15.2%. Renton’s DSL for the 2024 calendar year was 15.5%, or 432,294,006 gallons. This is a 1.1% increase from 2023. Our three-year rolling average increased by 0.26%. DSL reflects the amount of water and potential revenue that has been lost due to unauthorized water use, water main breaks and leaks, functional issues, and other causes.

Water Loss Control Action Plan

Since the three-year (2022–2024) annual average of the city’s DSL exceeds 10%, the city is required by the state to develop and implement a Water Loss Control Action Plan. The city is taking the following actions, among others, to identify and reduce water loss in the distribution system:

Continue the annual replacement of aging and leaky water mains.
Conduct leak testing on old underground water reservoirs and repair leaky joints on concrete floors and walls.
Continue using Advanced Metering Infrastructure (AMI) technology to detect leaks and testing of water meters.

2024 Renton Water Statistics

2,756,809,000 gallons produced by the City of Renton from nine wells and one spring
319 miles of water main in service
17,931total metered connections
7,532,265 gallons produced on an average day
13,179,000 gallons produced on high-demand day: July 10, 2024
5,034,000 gallons produced on low-demand day: November 19, 2024

Child looking through magnifying glass at glass of water

Water Quality Topics

Lead and Your Health

If present, elevated levels of lead can cause serious health problems, especially for pregnant women and young children. Lead in drinking water is primarily from materials and components associated with service lines and home plumbing. The City of Renton Water Utility is responsible for providing high-quality drinking water, but cannot control the variety of materials used in plumbing components. When your water has been sitting for several hours, you can minimize the potential for lead exposure by flushing your tap for 30 seconds to two minutes before using water for drinking or cooking. If you are concerned about lead in your water, you may wish to have your water tested. Information on lead in drinking water, testing methods, and steps you can take to minimize exposure is available from the Safe Drinking Water Hotline at 800-426-4791 or epa.gov/safewater/lead.

If you flush your tap, you can use the flushed water for watering plants or general cleaning. Hot water is likely to contain higher levels of lead. Only use water from the cold-water tap for drinking, cooking, and especially for making baby formula. Homes built before 1986 are more likely to have lead pipes, fixtures, and solder. The most common problem is brass or chrome-plated brass faucets and fixtures that can leach lead into the water, especially hot water. Until ten years ago, the legal limit for “lead-free” pipes was up to 8% lead. As of January 1, 2014, all newly installed water faucets, fixtures, pipes, and fittings must meet new lead-free requirements, which reduce the amount of lead allowed to 0.25%. However, these requirements do not apply to existing fixtures, such as those found in many older homes.

Lead Prevention

Renton works to prevent the corrosion of lead as well as other metals such as copper and iron. The pH of Renton’s water is adjusted to prevent the corrosion of household plumbing—the major potential source of lead in our water. In areas of the city with cast iron water mains, such as West Hill, ortho-polyphosphates are added to prevent corrosion. To make sure this treatment is working, water is periodically tested at residential taps. This testing is in compliance with the Lead and Copper Rule. More information is available at doh.wa.gov/leadandcopperrule.

Lead Testing in Schools

The Washington State Department of Health has developed a program to address concerns about lead in school drinking water. For updated information, please visit: doh.wa.gov/LeadinSchoolDrinkingWater.

PFAS Chemicals

PFAS is an acronym for “per- and poly-fluorinated alkyl substances.” PFAS are synthetic chemicals used in many consumer products, including food wrappers, fabrics, and carpets, to make them resistant to water, oil, grease, stains, and heat. Certain types of firefighting foam may contain PFAS. Even though PFAS compounds aren’t manufactured in Washington State, there are known cases of PFAS contamination in drinking water linked to the use of firefighting foam by the U.S. military, local fire departments, and airports.

PFAS Rule and Testing

Under the 2023 Unregulated Contaminant Monitoring Rule 5 (UCMR5), the water utility tested drinking water samples for 29 PFAS compounds, including 5 state-regulated PFAS. PFAS compounds were not detected in the UCMR5 samples collected from the downtown wells and Maplewood wellfield. One sample in March 2023 showed a low-level detection of perfluorobutane sulfonic acid (PFBS) at Springbrook Springs; however follow-up sampling in September 2023 did not detect PFBS.

Springbrook Springs PFBS Result March 2023 = 2.98 ppt
Springbrook Springs PFBS Result Sept 2023 = No Detection
WA DOH PFBS State Action Level = 345 ppt

ppt = parts per trillion; 1 part per trillion is equivalent to a single penny in $10,000,000,000

The Washington State Board of Health has adopted a new rule requiring community public water systems to conduct additional testing for PFAS. If PFAS levels exceed the state action level (SAL), the system must notify customers within 30 days and increase testing frequency. The city will perform additional PFAS sampling in 2025, with results published in the 2026 Water Quality Report. Public notifications will be issued if elevated levels are detected.

One of the challenges of providing health guidance for PFAS is that these chemicals are still being researched. Health advice is updated as new science becomes available. The City of Renton will continue monitoring emerging contaminants like PFAS and stay current with state and federal regulations to ensure our customers receive accurate, science-based information about their drinking water.

For more information, please visit epa.gov/pfas and doh.wa.gov/pfas.

Aerial view looking south over Kennydale neighborhood to Southport and Mount Rainier in the distance

Renton Water Quality Topics

Water Quality for Brewers

For brewers in our community, specific water quality parameters are often of interest. Below are the values for the minerals and parameters generally requested. These numbers are the annual range of values. Renton’s water comes from multiple sources and depending upon your location, you may receive water from one source or a combination of our water sources.

Water Quality of Downtown Wells

Average pH (2021) = 7.4–8.0
Total hardness as Calcium Carbonate, ppm (2021) = 44
Sodium, ppm (2021) = 14
Sulfate, ppm (2021) = 4.9
Chloride, ppm (2021) = 3.5

Historical Data

Calcium, ppm (2004) = 13
Magnesium, ppm (2004) = 3.5

ppm = parts per million

Water Hardness

Renton’s water falls within the slightly hard, moderately hard, and hard range, depending upon the customer’s water source within the city. The most recent water hardness testing showed 44 ppm for the downtown wells, 69 ppm for Maplewood, and 125 ppm for Springbrook Springs. A water’s hardness is dependent upon the levels of two naturally occurring soluble minerals—calcium and magnesium. Hard water may cause scale buildup in cooking pans, sinks, and water heaters, and may require using more soap to form a lather. If you do not know which water source your drinking water comes from, the water utility can help. Please find the contact information on the last page of this report.

WATER HARDNESS SCALE

Grains/Gal	mg/L & ppm	Classification
Less than 1	Less than 17.1	Soft
1–3.5	17.1–60	Slightly Hard
3.5–7	60–120	Moderately Hard
7–10	120–180	Hard
Over 10	Over 180	Very Hard

Fluoride

In 1985, the citizens of Renton voted to have fluoride added to the city’s drinking water. Fluoride levels were adjusted in 2016 to meet the DOH’s new recommended level of 0.7 ppm. More information on fluoride can be found at the CDC at cdc.gov/fluoridation/faqs.

How Can I Get Involved?

The City of Renton welcomes your interest in its water system. The Renton City Council is the city’s decision-making body and meets on the first four Mondays of each month at 7 p.m. Meetings are conducted via videoconference and in person at the Council Chambers on the 7th floor of city hall.

The Utilities Committee oversees water utility issues. They meet the first and third Mondays of the month at 3 p.m. in the 7th floor Council Conference Room or via videoconference. Members of the Utilities Committee for 2025 are:

Kim-Khánh Văn, Chair
Carmen Rivera, Vice-Chair
Valerie O’Halloran, Member

Call the City Clerk Division at 425-430-6510 for meeting or agenda information, or check the council calendar at rentonwa.gov/council.

It’s Watering Season – Make Every Drop Count!

From May through September, water use in our region nearly doubles. Most of that extra water is used to water lawns and gardens. And experts estimate that 50% or more of this water goes to waste, due to evaporation, runoff, or simply overwatering. Water may never make it to the plant roots if applied in the wrong way. To make the most of every drop, follow these simple guidelines:

Start Off Right

Add 2 to 4 inches of arborist wood chips to bare soil to reduce evaporation.
Repair leaky faucets and hoses. Even small leaks waste lots of water.

How & When To Water

Watering deeply but less often encourages deep roots and prevents diseases.
Let the top few inches of soil dry before watering again so roots and soil life can breathe.
Water early or late in the day to minimize evaporation.
Use timers to limit watering and make early morning irrigation convenient.
Split watering into two or more applications, at least 30 minutes apart, to prevent runoff. This is helpful on dry or clay soils, slopes, and berms.

Sprinkler Systems

Use sprinklers that apply water slowly enough so soil can absorb it without letting it run off.

If runoff or puddling occurs, run sprinklers for a short time, then turn them off and allow water to soak in before resuming watering.
Place sprinklers to avoid watering driveways, sidewalks, or walls.
Adjust sprinklers to prevent fine misting that just blows away.

When you conserve water, our planet and future generations thank you. The City of Renton wants to make conservation as easy as possible for our customers. For more tips, tools, and resources visit SavingWater.org.

$100 Rebate on replacing old toilets - picture of toilet with flowers growing

Water Conservation: Replacing Old Toilets

Ready To Replace Your Toilet?

Toilets are the biggest water-user in most homes. Replacing an older toilet with a new, water-efficient toilet will help keep your water and sewer bill as low as possible.

Did you know that if your toilet was manufactured before 2004, you may be eligible for a rebated toilet? It’s true! Toilets are the biggest water user in most homes. By replacing an older toilet, you can help save water every day and keep your water bill as low as possible. When considering whether to replace your toilet, ask yourself these questions:

Is it more than 20 years old?
Does it leak often?
Does it need 2 flushes to clear the bowl?

If you answered “yes” to any of these questions, it may be time to update your toilet.

The cost of replacing a toilet varies widely. And while it’s hard to find a toilet for less than $100, there is a good selection of water-wise toilets that cost under $200. Another major cost consideration is the installation. If you’re doing the installation yourself, you can keep costs low as you’ll only need to purchase a few small parts like a wax ring and some sealant.

$100 Rebate

Replace your old toilet and get a $100 rebate through the Saving Water Partnership. To qualify, your existing toilet must be older than 2004 and the new one must be eligible for the rebate.

How it works:

Go to savingwater.org/rebates to read the full participation criteria.
Buy and install an eligible toilet. Save the receipt.
Submit an online application at savingwater.org/rebates. You’ll need a digital copy of your receipt and a recent water bill.
Receive a check in the mail.

Water Conservation: Fix Leaks, Save Water

Average household water use by percentage

Leaks waste up to 12% of all water used at home. Yikes! That’s almost as much water as most homes use doing laundry each year. Check your home for the most common types of leaks.

Learn the signs of a running toilet. If you hear or see your toilet tank refilling in between flushes or if you need to jiggle the handle to stop the toilet water from running, you have a leak.
Check your toilet’s flapper. A worn-out flapper (the rubber valve at the bottom of the tank) can cause a silent leak. Open the tank and see or feel the flapper for signs of wear.
Take care of faucet and shower drips. Dripping faucets and showerheads can add up. Just one drop every two seconds wastes more than 1,000 gallons per year.
Check your water bill. Pick a month like January or February when you didn’t use water outdoors. If a family of four uses more than 9,000 gallons of water in a month, you may have a leak.
Find hidden leaks with your water meter. Read your water meter before and after a two-hour period when no one is using water. If the number changes, you may have a leak.

Watercolor illustration of colorful salmon jumping out of water

Saving Water Protects Salmon!

When you save water, you help protect salmon. This is especially important during the summer and fall, when stream flows are naturally low and adult salmon are returning to our local rivers and streams to spawn. You can also help protect this important species by practicing these salmon-safe habits:

Never dump oil or other chemicals down storm drains, and make sure no pollutants are leaking that could get washed into waterways (including pressure washing). For more information on proper disposal methods for recycling motor oil and preventing car leaks from polluting waterways, please visit Renton’s Shift Green program at rentonwa.gov/oilrecycling.
Sweep sidewalks and driveways instead of hosing. Put sweepings in the garbage to prevent pollutants and debris from entering streams.
Use automatic car washes that recycle water and properly dispose of detergents.
Plant native plants and trees to reduce the need for watering, pest control, and fertilization. Reap multiple benefits such as controlling erosion, reducing flooding, filtering pollution, and attracting wildlife.
Use compost as a natural fertilizer on your lawn, flowers, and garden beds. Compost supports healthy plant roots and slowly releases water to plants. Avoid non-organic fertilizers.

Renton and the Saving Water Partnership

Renton is a Member of the Saving Water Partnership

IN JANUARY 2012, Renton signed an agreement to buy water from Seattle Public Utilities. As part of this agreement, the City of Renton joined the Saving Water Partnership (SWP). The SWP, which is made up of the City of Renton and 18 water utility partners around the Puget Sound, has set a ten-year conservation goal to keep the total average annual retail water use of SWP members under 110 mgd through 2028, despite forecasted population growth, by reducing per capita water use. For 2024, the SWP met the goal, using 94.5 mgd.

Why conserve? It works!

When we work together to save water, it makes a big difference. Thanks to conservation efforts, our region uses the same amount of water today that it did in the late 1950s.

Together We Provide Water Conservation Programs to the Region

In 2024, the SWP made progress in promoting environmental education and water conservation in Renton. These efforts collectively contributed to raising awareness and fostering sustainable practices, marking a successful year for the SWP in advancing environmental conservation and education within the community.

YOUTH EDUCATION The SWP’s youth education program conducted 35 engaging in-classroom presentations, reaching 882 students with topics such as the water cycle, salmon life cycle, and healthy soils.
YARD CARE Renton hosted six natural yard care classes taught by local gardening professionals with 90 attendees.
WATER USE The SWP offers technical assistance to both residential and commercial customers, addressing issues related to irrigation efficiency and indoor water use.
OUTREACH SWP hosted an outreach event for Fix-A-Leak Week at Boeing reaching 200 participants. They distributed educational materials including brochures about water-saving tips and leak prevention, Shared Waters Activity booklets, and water conservation materials such as shower timers.
REBATES The SWP continued to offer rebates for premium toilets for both residential and commercial customers encouraging the adoption of water-efficient fixtures, which use significantly less water per flush compared to regular fixtures.

For more materials and rebates please visit the Saving Water Partnership website at savingwater.org

How Can We Help You?

Questions about this report:

Public Works Water Utility Engineering at 425-430-7287 or email utilitysystems@rentonwa.gov

Water discoloration, taste, or odor:

Public Works Water Quality at 425-430-7400, 7 a.m. to 3:30 p.m. or 425-430-7500 after hours or weekends

To report water pressure problems, water leaking in the streets, or water leaking at a meter:

Water Maintenance at 425-430-7400, 7 a.m. to 3:30 p.m. or 425-430-7500 after hours or weekends

If you are moving and need to arrange for a change of water service, or for general billing questions:

Utility Billing at 425-430-6852

Emergencies: Call 911

This report is written and distributed in compliance with the Federal Safe Drinking Water Act, which requires water utilities to provide annual “consumer confidence” reports to their customers. You will find in this report: where our drinking water comes from; what minerals or chemicals it contains; how it compares to stringent water quality standards; what Renton is doing to protect our water supply; and what we are doing to wisely use and conserve our regional water supply. Hopefully this report will help you better understand your drinking water. We assure you that providing high-quality and safe drinking water is one of Renton’s highest priorities.

This report contains important information about your drinking water. Have someone translate it for you, speak with someone who understands it, or select a language at the top of this webpage.

Current Water Quality Report

2025 Water Quality Report(PDF, 4MB)