LAKE OSWEGO MUNICIPAL WATER
PWSID: OR4100457 · Lake Oswego, OR · Serves 40,000 people
According to EPA Safe Drinking Water Information System (SDWIS), LAKE OSWEGO MUNICIPAL WATER (PWSID OR4100457) in Lake Oswego, OR is listed as a CWS water system covering about 40,000 people. The same extract lists 1 health-based violation record spanning 2000-2000. Those 1 health-based row for LAKE OSWEGO MUNICIPAL WATER cover contaminants such as Lead and Copper Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
LAKE OSWEGO MUNICIPAL WATER has 1 health-based violation record in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 1 distinct EPA contaminant code appears in this system's record, including Lead and Copper Rule. Recorded violations span 2000–2000. Day-to-day primacy enforcement for this system runs through the Oregon drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Oregon state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- OR4100457
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Lake Oswego, OR
- Population Served
- 40,000
- Health Violations
- Yes (1)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Lead and Copper Rule | 1 | 1 |
Violation History (1)
| Contaminant | Health | Date |
|---|---|---|
| Lead and Copper Rule | Yes | Jan 1, 2000 |
Frequently Asked Questions
What does EPA SDWIS list for LAKE OSWEGO MUNICIPAL WATER?
How many people does LAKE OSWEGO MUNICIPAL WATER serve?
What violations does LAKE OSWEGO MUNICIPAL WATER have?
What contaminants have been found in LAKE OSWEGO MUNICIPAL WATER water?
Compare beyond Oregon
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest LAKE OSWEGO MUNICIPAL WATER on cumulative violation count (1) and EPA-reported population served (40,000). Violation-count peers include CHOCTAW - CONEHATTA, CHOCTAW - PEARL RIVER, CHOCTAW - TUCKER. Population peers include NEWARK WATER DEPARTMENT, CORAL SPRINGS IMPROVEMENT DIST, HALLANDALE BEACH, CITY OF.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
LAKE OSWEGO MUNICIPAL WATER (OR4100457) is drawn from EPA SDWIS. Nearby county systems in this extract include SUNRISE WATER AUTHORITY; OREGON CITY; OAK LODGE WATER SERVICES; CLACKAMAS RIVER WATER. Health-based rows (1 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.