Public water system · OR4100239
ActiveLondon Water Co-Op
At a glance
London Water Co-Op (PWSID OR4100239) is an active community water system in Lane County, Oregon. It reports serving 63 people through 24 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in March 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
63
Service connections
24
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does London Water Co-Op compare with other water systems in Lane County?
By EPA's size categories, London Water Co-Op is a very small system (500 people or fewer). Lane County has 231 active public water systems. Its population served is well below the county average of 1,415 people per system, and accounts for less than 0.1% of the 326,858 people reported by systems filed under the county. Across Oregon, the 2,536 active systems average 1,587 people each. Nationally, the average active community water system reports serving 6,703 people, so London Water Co-Op is well below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Oregon has 940 active community water systems, 37% of the state's 2,536 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 211 Oregon systems (8.3%) list surface water as their primary source.
Who owns and regulates London Water Co-Op?
EPA lists London Water Co-Op as owned by a local government. The OR state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 42 of the 231 active systems in Lane County (18%) are also owned by a local government.
Does London Water Co-Op have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in March 2026. The violations listed here began between January 2026 and March 2026. By type: 6 public notice, recordkeeping or other and 6 required treatment not met. The contaminant or rule involved most often is Public Notice (6 of them). EPA lists 6 as archived, 4 as resolved and 2 as unaddressed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-03-07 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2026-03-07 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2026-03-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
| 2026-03-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
| 2026-02-13 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2026-02-13 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2026-02-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
| 2026-02-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
| 2026-01-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2026-01-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2026-01-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
| 2026-01-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Archived |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
London Water Co-Op: frequently asked questions
Who runs London Water Co-Op?
London Water Co-Op (PWSID OR4100239) is a community water system owned by a local government. It is regulated by the OR state drinking water program.
How many people does London Water Co-Op serve?
London Water Co-Op reports serving 63 people through 24 service connections in Lane County, Oregon.
Where does London Water Co-Op get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does London Water Co-Op have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in March 2026. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is London Water Co-Op's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in March 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the OR state drinking water program.
Where can I find London Water Co-Op's water quality report?
As a community water system, London Water Co-Op must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Lane County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Eugene Water & Electric Board | Lane | 176,000 | Community | Surface water |
| Springfield Utility Board | Lane | 62,100 | Community | Surface water |
| Cottage Grove, City of | Lane | 10,879 | Community | Surface water |
| Florence, City of | Lane | 9,561 | Community | Groundwater |
| Junction City Water Utilities | Lane | 7,000 | Community | Groundwater |
| Rainbow Water District | Lane | 6,300 | Community | Groundwater under influence of surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “London Water Co-Op, PWSID OR4100239, Oregon”, https://aquacensus.com/water-systems/oregon/london-water-co-op-or4100239 (data as of October 1, 2026).