Federal Way Tap Water Quality Report
Federal Way's water has 3 contaminants above EPA MCLGs. Consider using a certified water filter for additional protection.
Other systems listed for Federal Way with results above guidelines: TACOMA WATER DIVISION CITY OF (1 above guidelines), HIGHLINE WATER DISTRICT (1 above guidelines)
Water system
LAKEHAVEN WATER AND SEWER DISTRICT
2 other systems are listed for Federal Way. See their figures
People Served
116,906
Health-based violations since 2020
0
LAKEHAVEN WATER AND SEWER DISTRICT. EPA SDWA violation data as of Q2 2026 (downloaded 2026-07-09).
Latest sample on file
Mar 2025 · LAKEHAVEN WATER AND SEWER DISTRICT
Utilities publish newer results in their annual water quality report (Consumer Confidence Report).
Is Federal Way Tap Water Safe to Drink?
We recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems. Federal Way's water has 3 contaminants above EPA health-based guidelines (MCLGs), while it meets federal legal limits.
LAKEHAVEN WATER AND SEWER DISTRICT, Federal Way's water system, serves 116,906 people. 2 other systems are listed for Federal Way. Each system's results are listed under its own name, never added to LAKEHAVEN WATER AND SEWER DISTRICT's. Water quality testing is conducted regularly and reported to the EPA. The latest sample on file for LAKEHAVEN WATER AND SEWER DISTRICT is from Mar 2025.
Boil water advisories are issued by water systems and state agencies, and they change from day to day. Boil water advisories in Washington
Federal Way Water Service Areas
What these numbers actually mean for Federal Way, WA
We read Federal Way, WA’s published record and send you a short report — which findings warrant a decision, which to ignore, and what to do about it. Including when the answer is nothing.
- 3 contaminants above EPA MCLGs and 7 contaminants with an EPA health goal detected in some samples (no level on file)
- 143 results on file
- 23 PFAS compounds on record
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Recommended Water Filters for Federal Way
Based on Federal Way's water quality data, these NSF-certified filters are recommended to remove contaminants above EPA MCLGs.
AquaTru
Classic
NSF Certified:
Flow Rate
0.04 gpm
Daily Production
600 gpd
Highlights:
- Best overall contaminant reduction score
- Most performance certifications
- Lifetime warranty
- NSF-42, NSF-53, NSF-58, NSF-401 certified
Removes 23 contaminants:
+18 more
Molybdenum, Barium, Chlorine, Arsenic, 83+ contaminants, Calcium, Chloride, Copper, Magnesium, Nitrate, Phosphorus, Sodium, Sulfate, Total Dissolved Solids, Zinc, Total THMs, Chloroform, Nitrate (as N)
AquaTru
Carafe
NSF Certified:
Flow Rate
0.3 gpm
Daily Production
4 gpd
Highlights:
- Verified PFAS reduction
- Glass collection vessel
- Plug-and-play installation
- NSF-53, NSF-42, NSF-58, NSF-401, NSF-372 certified
Removes 17 contaminants:
+12 more
Arsenic, 83+ contaminants, Copper, Total THMs, Chloroform, Chloride, Sulfate, Nitrate (as N), Molybdenum, Barium, Strontium, Uranium
Waterdrop
G3 P600
NSF Certified:
Flow Rate
600 gpm
Daily Production
600 gpd
Highlights:
- Space-saving design
- Good contaminant reduction
- NSF-58 certified
Removes 4 contaminants:
Waterdrop
G3 P800
NSF Certified:
Flow Rate
800 gpm
Daily Production
800 gpd
Highlights:
- High water production rate
- Modern design
- No tank needed
- NSF-42, NSF-53, NSF-58, NSF-372 certified
Removes 15 contaminants:
+10 more
Chlorine, Copper, Manganese, Potassium, Selenium, Total Dissolved Solids, Nitrate, Chloride, Sodium, Strontium
Filters for what Federal Way reported
Verify Your Water Quality with Independent Testing
With 3 contaminants above EPA MCLGs and 7 contaminants with an EPA health goal detected in some samples (no level on file), independent laboratory testing provides a second opinion and can track changes over time.
SimpleLab
Advanced Home Water Test
$269
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
Tap Score
PFAS Forever Chemicals Test
$339.95
Specialized test for PFOA, PFOS, and 24 other forever chemicals. Essential for areas near military bases, airports, or industrial sites.
Tap Score
Advanced Microplastics Test
$829
Cutting-edge testing for microplastics particles in drinking water using advanced laboratory techniques.
With 3 contaminants above health guidelines, you may want to explore water purification options. Learn how to make distilled water at home for applications like humidifiers, CPAP machines, and baby formula.
What Federal Way's water readings can explain
Utility-reported data for Federal Way includes turbidity and a chlorine-based disinfectant — the readings behind these common tap water questions. We publish a city-level hardness figure for Federal Way, resolved from its water systems where they report one and estimated from county sampling where they do not. Each page starts with the hot-tap and cold-tap check, then shows what your own water system reported.
On a private well near Federal Way? Public-water results do not apply to private wells. See King County well water testing and USGS risk data — modeled arsenic, nitrate, and the tests to run.
Water softener cost and installation in Federal Way
Federal Way's tap water measures 2.2 grains per gallon (37.9 mg/L) — soft on the USGS scale, below the range where scale is usually worth treating.
Water softener cost for 2.2 gpg water in Federal Way — equipment and local installation labour for your ZIP code, with the sizing arithmetic shown in full. For the national picture first, read what a water softener costs — equipment, installation labour and ten-year ownership, each separated out. For Washington as a whole, read water softener cost in Washington — priced against the plumber wage published for the state.
Frequently Asked Questions About Federal Way Tap Water
Federal Way's water has 3 contaminants above EPA MCLGs. While the water meets federal legal limits, we recommend using a certified water filter for additional protection, especially for vulnerable populations like children, pregnant women, and those with compromised immune systems.
Spotted something off on this page?
Residents keep our data honest.
This form corrects our data; it does not reach LAKEHAVEN WATER AND SEWER DISTRICT. For a problem with your water now (discolored water, no water, low pressure, a leak), contact LAKEHAVEN WATER AND SEWER DISTRICT directly.
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