Corvallis Water Quality
Oregon
According to EPA SDWIS, Corvallis, Oregon is served by 12 community water systems covering about 63,100 people. The same extract lists 9 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 Corvallis, Oregon is delivered through 12 EPA-regulated community water systems serving an estimated 63,100 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 9 violation records across the 12 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 4 distinct EPA contaminant codes: Revised Total Coliform Rule, LEAD AND COPPER RULE REVISIONS, Lead and Copper Rule, Coliform (TCR). 5 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 |
|---|---|---|---|
| CORVALLIS, CITY OF | 61,468 | 0 | Clean |
| KNOLL TERRACE PARK | 452 | 1 | Health |
| VINEYARD MOUNTAIN WATER | 325 | 0 | Clean |
| ALSEA COUNTY SERVICE DISTRICT | 202 | 0 | Clean |
| CASCADE VIEW ESTATES | 113 | 0 | Clean |
| NORTH CORVALLIS MHP-WELL #1 | 100 | 1 | Health |
| WOODLAND MOBILE HOME PARK | 91 | 0 | Clean |
| WHISPERING PINES MOBILE LODGE | 90 | 1 | Health |
| RIDGEWOOD DIST IMPROV CO | 90 | 2 | Health |
| COLORADO LAKE COOP | 80 | 0 | Clean |
| RAINTREE ESTATES | 50 | 2 | Health |
| JACKSON CREEK WATER ASSOCIATION | 39 | 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 |
|---|---|---|
| RIDGEWOOD DIST IMPROV CO | Revised Total Coliform Rule | 2025-03-01 |
| RIDGEWOOD DIST IMPROV CO | Revised Total Coliform Rule | 2025-03-01 |
| NORTH CORVALLIS MHP-WELL #1 | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| KNOLL TERRACE PARK | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| JACKSON CREEK WATER ASSOCIATION | Lead and Copper Rule | 2023-07-01 |
| JACKSON CREEK WATER ASSOCIATION | Lead and Copper Rule | 2023-07-01 |
| WHISPERING PINES MOBILE LODGE | Revised Total Coliform Rule | 2021-10-01 |
| RAINTREE ESTATES | Revised Total Coliform Rule | 2020-10-01 |
| RAINTREE ESTATES | Coliform (TCR) | 2016-03-01 |
What are Corvallis's health-based records for?
Corvallis's health-based violation records carry 4 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 |
|---|---|---|
| Revised Total Coliform Rule | 4 | 3 |
| Lead and Copper Rule Revisions | 2 | 2 |
| Lead and Copper Rule | 2 | 1 |
| Coliform (TCR) | 1 | 1 |
TRI Facilities in Corvallis
| Facility | Total Releases |
|---|---|
| Hollingsworth & Vose Fiber Co | 81.7K lbs |
| Green & White | 6.5K lbs |
| Oregon Rubber Mills Co | 889 lbs |
| Corvallis Asphalt | 6 lbs |
| Hp Inc. | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Corvallis, Oregon? ▼
How many water violations does Corvallis have in this EPA extract? ▼
What contaminants were found in Corvallis water? ▼
How many water systems serve Corvallis? ▼
Where does Corvallis get its drinking water? ▼
Are there pollution sources near Corvallis? ▼
How does Corvallis compare in Oregon?
Of the 287 Oregon places with at least one community water system on file, Corvallis ranks #15 by number of systems (12).
Either side of it: Scappoose (13), Albany (12), Astoria (9), Lake Oswego (9)
About This Data
Figures here are the current EPA SDWIS extract joined to the 12 community water systems whose service area lists Corvallis, 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.