Water Quality Report · Updated October 07, 2026
BELLEVUE CITY OF
BELLEVUE CITY OF delivers tap water graded C (71/100) by TapWaterSafety.org. The utility serves approximately 321,349 residents in Bellevue, Washington using surface water (purchased). The most significant water quality concerns are: Arsenic significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline.
Is Bellevue tap water safe to drink?
BELLEVUE CITY OF delivers tap water that earns a grade of C (71/100) from TapWaterSafety.org — an average rating, with several contaminants above health guidelines but generally compliant with US legal limits.
The utility serves 321,349 residents in Bellevue, drawing from surface water (purchased).
Public testing data identifies 9 contaminants in this water above EWG's health-based guidelines, including: Arsenic, Haloacetic acids (HAA9), Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Trichloroacetic acid, Dichloroacetic acid, Chloroform, Bromodichloromethane, Chromium (hexavalent). For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
EPA compliance record
Official U.S. EPA records for BELLEVUE CITY OF (system ID WA5305575) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Quick actions for Bellevue residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for BELLEVUE CITY OF.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 2.9 ppb, 725x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 26.6 ppb, 444x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 28.6 ppb, 286x above the EWG health guideline of 0.1 ppb.
Contact BELLEVUE CITY OF
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for Bellevue
Filters matched to the specific contaminants in this water supply.
Reverse osmosis certified for arsenic (NSF/ANSI 58)
$429-$599Reverse osmosis certified under NSF/ANSI 58 for arsenic is the most reliable home option.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
Score breakdown
This utility's overall score of 71/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
2.9 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 725× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
26.6 ppb | 0.06 | — | — | — | — | — | 444× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
28.6 ppb | 0.1 | 60.0 | 60 | — | — | — | 286× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
25.8 ppb | 0.15 | 80.0 | 100 | — | — | — | 172× over |
| Trichloroacetic acid Disinfection byproduct |
13.7 ppb | 0.1 | — | — | — | — | — | 137× over |
| Dichloroacetic acid Disinfection byproduct |
13.6 ppb | 0.2 | — | — | — | — | — | 68× over |
| Chloroform Disinfection byproduct |
23.9 ppb | 0.4 | — | — | — | — | — | 60× over |
| Bromodichloromethane Disinfection byproduct |
1.57 ppb | 0.06 | — | — | — | — | — | 26× over |
| Chromium (hexavalent) Heavy metal |
0.107 ppb | 0.02 | — | — | — | — | — | 5.3× over |
| Dibromochloromethane Disinfection byproduct |
0.0113 ppb | 0.1 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
10.9 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
1.32 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.306 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0243 ppb | 1500.0 | — | — | — | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
BELLEVUE CITY OF service area
This water system serves 1 community in King County, Washington. Click any city for its dedicated tap water quality page.
Find the right filter for Bellevue water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.