TapWaterMap

OR / Portland

OR · Tap water records

Portland tap water, in plain English

Here is what the EPA's own data shows about tap water in Portland. According to EPA SDWIS data retrieved July 2026, Portland is served by 27 active community water systems, together reported to serve about 752,577 people.

As of July 2026, EPA records show 937 violations across the community water system(s) serving Portland, going back to the earliest EPA record. 20 of these are classified by the EPA as health-based (a contaminant recorded above the limit the EPA tracks); the rest are monitoring or reporting violations. Each is listed by system below, with its status.

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What the EPA has on record, by system

Portland Water Bureau

666,200 served · surface water · PWSID OR4100657

Rockwood Pud

65,443 served · surface water · PWSID OR4100668

West Slope Water District

11,000 served · surface water · PWSID OR4100660

Raleigh Water District

4,500 served · surface water · PWSID OR4100667

Palatine Hill Water District

1,500 served · surface water · PWSID OR4100653

Washington County Railroad

795 served · groundwater · PWSID TX1700208

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Shady Oaks Estates

648 served · groundwater · PWSID TX1700632

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Manna House Church

300 served · groundwater · PWSID OR4101267

Smgv/Widgi Creek

300 served · groundwater · PWSID OR4101448

Highline Oaks Water Utility

242 served · groundwater · PWSID TX1700676

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Montgomery Place Water System

207 served · groundwater · PWSID TX1700074

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Everett Square Windcrest Estates

204 served · groundwater · PWSID TX1700427

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Rose Hill Estates Subdivision

177 served · groundwater · PWSID TX1700911

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Enchanted Mobile Home Park

150 served · groundwater · PWSID NM3510329

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Rocky Pointe Marina

125 served · groundwater · PWSID OR4101251

Columbia Place Llc

125 served · groundwater · PWSID WA5353263

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Mobile Village Mhp Llc

100 served · groundwater · PWSID OR4100984

Sauvie Island Moorage

96 served · groundwater · PWSID OR4101209

Lakeview Trailer Park

70 served · groundwater · PWSID MI0040431

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Woodburn Mobile Estates

70 served · groundwater · PWSID OR4100964

Totem Village Mhp

70 served · groundwater · PWSID OR4101171

Mccuddys Landing

70 served · groundwater · PWSID OR4106090

Timber Creek Estates

60 served · groundwater · PWSID TX1013239

As of July 2026, EPA records show no reported violations for this system in the period covered. This is not a guarantee about every substance, or about the water inside your home's plumbing.

Thurston Oaks Mhp

38 served · groundwater · PWSID OR4100841

Mayfair Moorage Inc

30 served · groundwater · PWSID OR4101258

Big Oak Marina

30 served · groundwater · PWSID OR4106054

Robbins Nest Residential Park

27 served · groundwater · PWSID OR4195304

What this means

A health-based violation means a contaminant was recorded above the limit the EPA tracks for it. A monitoring or reporting violation means a required test or report was late or missed — not that a contaminant was measured above a limit. “Returned to compliance” means the EPA recorded the issue as resolved.

This page summarizes the EPA's own records and does not assess whether your water is safe to drink. For the most current details, you can verify every record directly with the EPA, and contact your water system with questions.

Source: U.S. EPA Envirofacts SDWIS, retrieved July 2026. Records cover the EPA's full reporting history for these systems. Verify at EPA ECHO.