Water Quality Report · Updated May 12, 2026
MARYSVILLE UTILITIES
MARYSVILLE UTILITIES delivers tap water graded D (62/100) by TapWaterSafety.org. The utility serves approximately 88,582 residents in Marysville, 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 Marysville tap water safe to drink?
MARYSVILLE UTILITIES delivers tap water that earns a grade of D (62/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including arsenic significantly above health guideline.
The utility serves 88,582 residents in Marysville, drawing from surface water (purchased). Despite being legal under US EPA standards, this water would fail the European Union's Drinking Water Directive, primarily due to arsenic significantly above health guideline.
Public testing data identifies 12 contaminants in this water above EWG's health-based guidelines, including: Arsenic, Haloacetic acids (HAA9), Haloacetic acids (HAA5), Total trihalomethanes (TTHMs), Trichloroacetic acid, Chloroform, Dichloroacetic acid, Bromodichloromethane, Chromium (hexavalent), Bromochloroacetic acid, Dibromochloromethane, Nitrate. 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.
Quick actions for Marysville residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for MARYSVILLE UTILITIES.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 2.3 ppb, 575x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 25.5 ppb, 424x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 25.3 ppb, 253x above the EWG health guideline of 0.1 ppb.
Contact MARYSVILLE UTILITIES
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 Marysville
Filters matched to the specific contaminants in this water supply.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
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 62/100 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 |
2.3 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 575× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
25.5 ppb | 0.06 | — | — | — | — | — | 424× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
25.3 ppb | 0.1 | 60.0 | 60 | — | — | — | 253× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
28.2 ppb | 0.15 | 80.0 | 100 | — | — | — | 188× over |
| Trichloroacetic acid Disinfection byproduct |
14.3 ppb | 0.1 | — | — | — | — | — | 143× over |
| Chloroform Disinfection byproduct |
24.8 ppb | 0.4 | — | — | — | — | — | 62× over |
| Dichloroacetic acid Disinfection byproduct |
10.0 ppb | 0.2 | — | — | — | — | — | 50× over |
| Bromodichloromethane Disinfection byproduct |
2.57 ppb | 0.06 | — | — | — | — | — | 43× over |
| Chromium (hexavalent) Heavy metal |
0.614 ppb | 0.02 | — | — | — | — | — | 31× over |
| Bromochloroacetic acid Disinfection byproduct |
0.352 ppb | 0.02 | — | — | — | — | — | 18× over |
| Dibromochloromethane Disinfection byproduct |
0.526 ppb | 0.1 | — | — | — | — | — | 5.3× over |
| Nitrate Inorganic |
0.613 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 4.4× over |
| Manganese Heavy metal |
79.0 ppb | 100.0 | — | 50 | 80 | — | — | Fails EU |
| Chlorate Disinfection byproduct |
115.1 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.912 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.915 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.0458 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
0.0357 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0456 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| 4-Androstene-3,17-dione* Other |
0.095 ppt | — | — | — | — | — | — | Below guideline |
| Fluoride* Inorganic |
0.68 ppm | — | 4.0 | 1.5 | 1.5 | — | — | 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.
MARYSVILLE UTILITIES service area
This water system serves 1 community in Snohomish County, Washington. Click any city for its dedicated tap water quality page.
Find the right filter for Marysville water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.