Public water system · WA53AE340
ActiveOalc Davenport
At a glance
Oalc Davenport (PWSID WA53AE340) is an active transient non-community water system in Lincoln County, Washington. It reports serving 300 people through 3 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
300
Service connections
3
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Oalc Davenport compare with other water systems in Lincoln County?
By EPA's size categories, Oalc Davenport is a very small system (500 people or fewer). Lincoln County has 33 active public water systems. Its population served is about 43% below the county average of 530 people per system, and accounts for 1.7% of the 17,490 people reported by systems filed under the county. Across Washington, the 4,705 active systems average 2,172 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Oalc Davenport is about twice that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Washington has 1,913 active transient non-community water systems, 41% of the state's 4,705 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 4,370 Washington systems (93%) list groundwater as their primary source.
Who owns and regulates Oalc Davenport?
EPA lists Oalc Davenport as privately owned. The WA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 18 of the 33 active systems in Lincoln County (55%) are also privately owned.
Does Oalc Davenport have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2026. The violations listed here began between October 2025 and January 2026. By type: 2 monitoring and reporting. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 2 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2026-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2025-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 2 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.
Oalc Davenport: frequently asked questions
Who runs Oalc Davenport?
Oalc Davenport (PWSID WA53AE340) is a transient non-community water system privately owned. It is regulated by the WA state drinking water program.
How many people does Oalc Davenport serve?
Oalc Davenport reports serving 300 people through 3 service connections in Lincoln County, Washington.
Where does Oalc Davenport get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Oalc Davenport have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 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 Oalc Davenport'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. EPA's records list 2 violations for this system; none is health-based, and the most recent began in January 2026. For current results, consult EPA ECHO, or the WA state drinking water program.
Where can I find Oalc Davenport's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Oalc Davenport is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Lincoln County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sprague Lake Eb Rest Area | Lincoln | 2,286 | Transient non-community | Groundwater |
| Davenport Water Division | Lincoln | 1,750 | Community | Groundwater |
| Sprague Lake Wb Rest Area | Lincoln | 1,736 | Transient non-community | Groundwater |
| Fort Spokane Campground | Lincoln | 1,436 | Transient non-community | Groundwater |
| Reardan Town of | Lincoln | 1,418 | Community | Groundwater |
| Spring Canyon Campground | Lincoln | 1,043 | Transient non-community | Groundwater |
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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, “Oalc Davenport, PWSID WA53AE340, Washington”, https://aquacensus.com/water-systems/washington/oalc-davenport-wa53ae340 (data as of October 1, 2026).