Portland Water Quality
Oregon
According to EPA SDWIS, Portland, Oregon is served by 27 community water systems covering about 752,577 people. The same extract lists 77 health-based violation records, most recently coded 8000 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Portland, Oregon is delivered through 27 EPA-regulated community water systems serving an estimated 752,577 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 77 violation records across the 27 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 7 distinct EPA contaminant codes: Revised Total Coliform Rule, Arsenic, Lead and Copper Rule, LEAD AND COPPER RULE REVISIONS, Gross Alpha, Excl. Radon and U and 2 others. 71 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Oregon drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| PORTLAND WATER BUREAU | 666,200 | 1 | Health |
| ROCKWOOD PUD | 65,443 | 0 | Clean |
| WEST SLOPE WATER DISTRICT | 11,000 | 1 | Health |
| RALEIGH WATER DISTRICT | 4,500 | 0 | Clean |
| PALATINE HILL WATER DISTRICT | 1,500 | 0 | Clean |
| WASHINGTON COUNTY RAILROAD | 795 | 1 | Health |
| SHADY OAKS ESTATES | 648 | 14 | Health |
| MANNA HOUSE CHURCH | 300 | 2 | Health |
| SMGV/WIDGI CREEK | 300 | 4 | Health |
| HIGHLINE OAKS WATER UTILITY | 242 | 8 | Health |
| MONTGOMERY PLACE WATER SYSTEM | 207 | 13 | Health |
| EVERETT SQUARE WINDCREST ESTATES | 204 | 8 | Health |
| ROSE HILL ESTATES SUBDIVISION | 177 | 0 | Clean |
| ENCHANTED MOBILE HOME PARK | 150 | 12 | Health |
| Columbia Place LLC | 125 | 0 | Clean |
| ROCKY POINTE MARINA | 125 | 2 | Health |
| MOBILE VILLAGE MHP LLC | 100 | 0 | Clean |
| SAUVIE ISLAND MOORAGE | 96 | 1 | Health |
| LAKEVIEW TRAILER PARK | 70 | 0 | Clean |
| TOTEM VILLAGE MHP | 70 | 0 | Clean |
| MCCUDDYS LANDING | 70 | 0 | Clean |
| WOODBURN MOBILE ESTATES | 70 | 1 | Health |
| TIMBER CREEK ESTATES | 60 | 1 | Health |
| THURSTON OAKS MHP | 38 | 0 | Clean |
| MAYFAIR MOORAGE INC | 30 | 0 | Clean |
| BIG OAK MARINA | 30 | 6 | Health |
| ROBBINS NEST RESIDENTIAL PARK | 27 | 2 | Health |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| SMGV/WIDGI CREEK | Revised Total Coliform Rule | 2025-12-01 |
| WOODBURN MOBILE ESTATES | Arsenic | 2025-10-01 |
| ROBBINS NEST RESIDENTIAL PARK | Lead and Copper Rule | 2025-09-11 |
| HIGHLINE OAKS WATER UTILITY | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SHADY OAKS ESTATES | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| EVERETT SQUARE WINDCREST ESTATES | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| WASHINGTON COUNTY RAILROAD | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| MONTGOMERY PLACE WATER SYSTEM | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| TIMBER CREEK ESTATES | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| ROBBINS NEST RESIDENTIAL PARK | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SAUVIE ISLAND MOORAGE | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SMGV/WIDGI CREEK | Revised Total Coliform Rule | 2024-10-01 |
| SMGV/WIDGI CREEK | Revised Total Coliform Rule | 2024-10-01 |
| SMGV/WIDGI CREEK | Revised Total Coliform Rule | 2024-10-01 |
| BIG OAK MARINA | Revised Total Coliform Rule | 2024-09-01 |
| BIG OAK MARINA | Revised Total Coliform Rule | 2024-09-01 |
| BIG OAK MARINA | Revised Total Coliform Rule | 2024-09-01 |
| BIG OAK MARINA | Revised Total Coliform Rule | 2024-08-01 |
| BIG OAK MARINA | Revised Total Coliform Rule | 2024-08-01 |
| BIG OAK MARINA | Revised Total Coliform Rule | 2024-08-01 |
| EVERETT SQUARE WINDCREST ESTATES | Lead and Copper Rule | 2024-04-01 |
| MONTGOMERY PLACE WATER SYSTEM | Lead and Copper Rule | 2024-04-01 |
| HIGHLINE OAKS WATER UTILITY | Lead and Copper Rule | 2022-07-01 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2022-01-01 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2021-10-01 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2021-07-01 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2021-04-01 |
| MONTGOMERY PLACE WATER SYSTEM | Lead and Copper Rule | 2021-01-15 |
| MONTGOMERY PLACE WATER SYSTEM | Lead and Copper Rule | 2021-01-15 |
| MONTGOMERY PLACE WATER SYSTEM | Lead and Copper Rule | 2021-01-15 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2021-01-01 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2020-10-01 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2020-07-01 |
| MANNA HOUSE CHURCH | Revised Total Coliform Rule | 2020-05-01 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2020-04-01 |
| ENCHANTED MOBILE HOME PARK | Groundwater Rule | 2018-11-07 |
| ENCHANTED MOBILE HOME PARK | Groundwater Rule | 2018-11-07 |
| ENCHANTED MOBILE HOME PARK | Groundwater Rule | 2018-11-07 |
| ENCHANTED MOBILE HOME PARK | Groundwater Rule | 2018-11-07 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2018-10-01 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2018-04-01 |
| WEST SLOPE WATER DISTRICT | Lead and Copper Rule | 2018-03-11 |
| PORTLAND WATER BUREAU | Long Term 2 Enhanced Surface Water Treatment Rule | 2017-12-18 |
| HIGHLINE OAKS WATER UTILITY | Lead and Copper Rule | 2016-09-01 |
| ENCHANTED MOBILE HOME PARK | Groundwater Rule | 2016-05-04 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2016-04-01 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2016-01-01 |
| HIGHLINE OAKS WATER UTILITY | Lead and Copper Rule | 2015-10-01 |
| SHADY OAKS ESTATES | Gross Alpha, Excl. Radon and U | 2015-10-01 |
| EVERETT SQUARE WINDCREST ESTATES | Lead and Copper Rule | 2015-10-01 |
What are Portland's health-based records for?
Portland's health-based violation records carry 7 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Lead and Copper Rule | 31 | 7 |
| Gross Alpha, Excl. Radon and U | 13 | 1 |
| Groundwater Rule | 12 | 1 |
| Revised Total Coliform Rule | 11 | 3 |
| Lead and Copper Rule Revisions | 8 | 8 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 1 | 1 |
| Arsenic | 1 | 1 |
TRI Facilities in Portland
| Facility | Total Releases |
|---|---|
| Siltronic Corp | 2.1M lbs |
| Pcc Structurals Inc Large Parts Campus | 1.7M lbs |
| Vigor Industrial | 507.3K lbs |
| Boeing Co of Portland | 431.9K lbs |
| Mondelez Global LLC | 356.3K lbs |
| Arclin Surfaces LLC | 328.3K lbs |
| Gunderson Marine LLC | 190.6K lbs |
| Esco Group | 190.2K lbs |
| Columbia Steel Casting Co Inc | 183.3K lbs |
| Evraz Portland | 153.7K lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Portland, Oregon? ▼
How many water violations does Portland have in this EPA extract? ▼
What contaminants were found in Portland water? ▼
How many water systems serve Portland? ▼
Where does Portland get its drinking water? ▼
Are there pollution sources near Portland? ▼
How does Portland compare in Oregon?
Of the 287 Oregon places with at least one community water system on file, Portland ranks #5 by number of systems (27).
Either side of it: Grants Pass (34), Eugene (33), Salem (26), Klamath Falls (15)
About This Data
Figures here are the current EPA SDWIS extract joined to the 27 community water systems whose service area lists Portland, ranked against the 287 Oregon places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.