Hillsboro Water Quality
Oregon
The tap water in Hillsboro, Oregon is served by 7 EPA-regulated water systems covering approximately 95,100 people. 4 health-based violations are on record, most recently for 5000 in 2002. Data source: EPA Safe Drinking Water Information System.
Drinking water in Hillsboro, Oregon is delivered through 7 EPA-regulated community water systems serving an estimated 95,100 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.
The SDWIS record for Hillsboro shows 4 total violations across all 7 systems, of which 4 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. 15 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 |
|---|---|---|---|
| HILLSBORO, CITY OF | 92,632 | 0 | Clean |
| HILLSBORO-CHERRY GROVE | 1,628 | 2 | Health |
| FIR GROVE HOMEOWNERS ASSN | 450 | 0 | Clean |
| SOUTH HILLS WATER SYSTEM | 250 | 0 | Clean |
| WOLSBORN FARMS WATER DISTRICT | 90 | 2 | Health |
| RAINBOW ENDS WATER SYSTEM | 50 | 0 | Clean |
| JOINT WATER COMMISSION | 0 | 0 | Clean |
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 | 2002-01-02 |
| 5000 | 2000-01-01 |
| 5000 | 1998-07-01 |
| 5000 | 1995-07-01 |
TRI Facilities in Hillsboro
| Facility | Total Releases |
|---|---|
| Intel Corp-Ronler Acres Campus | 283.6K lbs |
| Tokyo Ohka Kogyo America Inc | 189.0K lbs |
| Quantumclean | 111.0K lbs |
| Dynic USA | 30.5K lbs |
| Qorvo US Inc. | 23.4K lbs |
| Glacier Northwest Inc Hillsboro Ready-Mix Plant | 22.4K lbs |
| Jireh Semiconductor Inc | 2.1K lbs |
| American Precision Industries | 1.1K lbs |
| Hillsboro Concrete | 224 lbs |
| Jsr Micro Inc. | 90 lbs |
Frequently Asked Questions
Is Hillsboro, Oregon water safe to drink? ▼
How many water violations does Hillsboro have? ▼
What contaminants were found in Hillsboro water? ▼
How many water systems serve Hillsboro? ▼
Where does Hillsboro get its drinking water? ▼
Are there pollution sources near Hillsboro? ▼
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.