Portland Water Quality
Oregon
The tap water in Portland, Oregon is served by 27 EPA-regulated water systems covering approximately 752,577 people. 74 health-based violations are on record, most recently for 5000 in 2025. Data source: EPA Safe Drinking Water Information System.
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.
The SDWIS record for Portland shows 74 total violations across all 27 systems, of which 74 are health-based, meaning either a Maximum Contaminant Level (MCL) was exceeded or a required treatment technique was not followed. Contaminants cited in health-based violations include 5000, 5200, 8000, 4000, 0700 and 1 others. 71 TRI-reporting industrial facilities are also located within the city limits.
A past EPA violation does not mean the water is currently unsafe, utilities are required to notify customers and remediate under state primacy oversight. 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 | 2 | 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 |
| ROCKY POINTE MARINA | 125 | 2 | Health |
| Columbia Place LLC | 125 | 0 | Clean |
| MOBILE VILLAGE MHP LLC | 100 | 0 | Clean |
| SAUVIE ISLAND MOORAGE | 96 | 1 | Health |
| LAKEVIEW TRAILER PARK | 70 | 0 | Clean |
| WOODBURN MOBILE ESTATES | 70 | 0 | Clean |
| TOTEM VILLAGE MHP | 70 | 0 | Clean |
| MCCUDDYS LANDING | 70 | 0 | Clean |
| 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?
Health-based violations indicate contaminant levels that exceeded EPA maximum contaminant levels (MCLs). This does not necessarily mean water is currently unsafe.
| Contaminant | Begin Date |
|---|---|
| 5000 | 2025-09-11 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 5200 | 2024-10-17 |
| 8000 | 2024-10-01 |
| 8000 | 2024-10-01 |
| 8000 | 2024-09-01 |
| 8000 | 2024-09-01 |
| 8000 | 2024-09-01 |
| 8000 | 2024-08-01 |
| 8000 | 2024-08-01 |
| 8000 | 2024-08-01 |
| 5000 | 2024-04-01 |
| 5000 | 2024-04-01 |
| 5000 | 2022-07-01 |
| 4000 | 2022-01-01 |
| 4000 | 2021-10-01 |
| 4000 | 2021-07-01 |
| 4000 | 2021-04-01 |
| 5000 | 2021-01-15 |
| 5000 | 2021-01-15 |
| 5000 | 2021-01-15 |
| 4000 | 2021-01-01 |
| 4000 | 2020-10-01 |
| 4000 | 2020-07-01 |
| 8000 | 2020-05-01 |
| 4000 | 2020-04-01 |
| 0700 | 2018-11-07 |
| 0700 | 2018-11-07 |
| 0700 | 2018-11-07 |
| 0700 | 2018-11-07 |
| 4000 | 2018-10-01 |
| 4000 | 2018-04-01 |
| 5000 | 2018-03-11 |
| 0800 | 2017-12-18 |
| 5000 | 2016-09-01 |
| 0700 | 2016-05-04 |
| 4000 | 2016-04-01 |
| 4000 | 2016-01-01 |
| 5000 | 2015-10-01 |
| 4000 | 2015-10-01 |
| 5000 | 2015-10-01 |
| 5000 | 2015-10-01 |
| 5000 | 2015-10-01 |
| 5000 | 2015-10-01 |
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
Is Portland, Oregon water safe to drink? ▼
How many water violations does Portland have? ▼
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? ▼
About This Data
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). Violations are reported by state agencies to EPA and include both health-based (MCL exceedances) and monitoring/reporting violations.
A reported violation does not necessarily mean water is currently unsafe to drink. Many violations are resolved quickly, and public water systems are required to notify customers of significant issues. For current water quality, contact your local water utility.
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.