Silver Lake Water & Sewer District water quality
Maltby, WA · serves 65,033 people (22,984 connections) · Purchased surface water · Local government · EPA ID WA5379250
Data: U.S. EPA · How we read the data · How we check it
Buys water from City of Everett Public Works Dept., Alderwood Water District. Treated water bought from another system can carry that system's contaminants.
Summary
No federal limits exceeded in EPA data.
- PFAS
- Not detectedNone of 29 PFAS found above EPA's reporting limits in 4 samples (2023–2025).
- Lead
- No resultsNo lead and copper results in EPA's national database.
- Violations
- None health-basedNo health-based violations since 2016.
- Built before 1986, or not sure what your service line is made of? Check your service line and test your tap. Utility data can't show your pipes.
- Tested your own tap? Compare your result with these numbers. Moving? Compare this system with another.
- Read Silver Lake Water & Sewer District's annual water quality report (Consumer Confidence Report). It lists every regulated contaminant tested and is usually on the utility's website or mailed with your bill. EPA: how to find it.
PFAS (“forever chemicals”)
EPA UCMR 5: 1 entry point tested Aug 2023 to May 2024. "Average" is the highest entry-point average (non-detects counted as zero), the way EPA compares UCMR 5 results to the limits. ppt = parts per trillion. These results do not determine compliance.
| Contaminant | Highest average |
|---|---|
| PFOA Not detected Limit 4 ppt | – |
| PFOS Not detected Limit 4 ppt | – |
| PFHxS Not detected Limit 10 ppt | – |
| PFNA Not detected Limit 10 ppt | – |
| HFPO-DA (GenX) Not detected Limit 10 ppt | – |
| Hazard Index (a combined score for PFHxS, PFNA, GenX and PFBS, where above 1 is over the limit) Not detected Limit 1 | – |
| PFBS Not detected Guideline 2,000 ppt | – |
| PFBA Not detected Guideline 6,000 ppt | – |
| PFHxA Not detected Guideline 3,000 ppt | – |
29 PFAS tested, 0 detected at least once. "Not detected" means below EPA's reporting limit (about 2 to 20 ppt depending on the chemical), not proven zero. PFAS not listed were not detected. The limits for PFHxS, PFNA, GenX and the Hazard Index were proposed for rescission in May 2026. That proposal is not final. Systems have until 2029 to meet the limits.
Lithium
Not detected in 3 samples (reporting limit 9 ppb). About lithium.
Lead and copper
No lead and copper results reported to EPA's national database for this system.
Violations
Health-based violations mean a contaminant exceeded a limit or a required treatment step was missed. Monitoring and reporting violations mean required tests or reports were late or missing, so the water's quality during that time is unknown. The total includes every violation in EPA's records, most of them paperwork.
Earlier EPA testing (2013–2020)
| Contaminant | Highest | Guideline |
|---|---|---|
| Manganese | 5.8 ppb | 300 ppb |
| Strontium | 0.018 ppm | 1.5 ppm |
| Chromium-6 | 0.36 ppb | – |
| Chlorate | 110 ppb | 210 ppb |
| Vanadium | 0.22 ppb | 21 ppb |
Where it serves
Maltby, Eastmont, Mill Creek
ZIP codes the system reported serving: 98012, 98082, 98208, 98296
Nearby utilities
- Woodinville Water District Woodinville · 4 mi
- Northshore Utility District Kenmore · 7 mi
- City of Kirkland Kirkland · 9 mi
- City of Redmond Water System Redmond · 9 mi
- Alderwood Water District North Lynnwood · 9 mi
- City of Lynnwood Lynnwood · 9 mi
Questions
Is Silver Lake Water & Sewer District water safe to drink?
Silver Lake Water & Sewer District has no health-based violations since 2016. EPA testing found no PFAS above the federal limits. Federal data can't tell you about your own pipes: lead comes from service lines and plumbing, so test your tap if your home was built before 1986. For the official word, read the utility's annual Consumer Confidence Report.
Does Silver Lake Water & Sewer District water have PFAS?
EPA tested Silver Lake Water & Sewer District for 29 PFAS between Aug 2023 and May 2024 and none were detected above the reporting limits (about 2 to 20 ppt depending on the chemical).
Check these numbers yourself
Every figure on this page comes from public EPA records. You don't have to take our word for it:
- EPA's own report for WA5379250: violations, enforcement and inspections, straight from EPA.
- EPA UCMR 5 data: the PFAS and lithium results (search the file for PWSID WA5379250).
- EPA SDWIS download: the lead results, population and violation records we use.
- The utility's annual water quality report (Consumer Confidence Report): ask Silver Lake Water & Sewer District, or see EPA's guide to finding it.
Found something that doesn't match? Tell us and we'll check it against EPA's records. How we check our data.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.