Public water system · OR4100244
ActiveCrescent Wtr Supply & Impr Dist
At a glance
Crescent Wtr Supply & Impr Dist (PWSID OR4100244) is an active community water system in Klamath County, Oregon. It reports serving 900 people through 315 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in January 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
900
Service connections
315
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Crescent Wtr Supply & Impr Dist compare with other water systems in Klamath County?
By EPA's size categories, Crescent Wtr Supply & Impr Dist is a small system (501 to 3,300 people). Klamath County has 106 active public water systems, and Crescent Wtr Supply & Impr Dist is the 4th-largest of them by population served. Its population served is about 64% above the county average of 549 people per system, and accounts for 1.5% of the 58,234 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 Crescent Wtr Supply & Impr Dist 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,175 Oregon systems (86%) list groundwater as their primary source.
Who owns and regulates Crescent Wtr Supply & Impr Dist?
EPA lists Crescent Wtr Supply & Impr Dist 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. 16 of the 106 active systems in Klamath County (15%) are also owned by a local government.
Does Crescent Wtr Supply & Impr Dist have drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in January 2018. The violations listed here began between January 1994 and January 2018. By type: 9 monitoring and reporting and 3 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (8 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2016-09-27 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2003-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2001-12-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2001-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2000-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1998-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
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.
Crescent Wtr Supply & Impr Dist: frequently asked questions
Who runs Crescent Wtr Supply & Impr Dist?
Crescent Wtr Supply & Impr Dist (PWSID OR4100244) is a community water system owned by a local government. It is regulated by the OR state drinking water program.
How many people does Crescent Wtr Supply & Impr Dist serve?
Crescent Wtr Supply & Impr Dist reports serving 900 people through 315 service connections in Klamath County, Oregon.
Where does Crescent Wtr Supply & Impr Dist 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 Crescent Wtr Supply & Impr Dist have any drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in January 2018. 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 Crescent Wtr Supply & Impr Dist'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, 3 are health-based, and the most recent began in January 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the OR state drinking water program.
Where can I find Crescent Wtr Supply & Impr Dist's water quality report?
As a community water system, Crescent Wtr Supply & Impr Dist 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 Klamath County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Klamath Falls Water Dept | Klamath | 40,475 | Community | Groundwater |
| Odot Hd Midland Info Ctr Ra | Klamath | 1,000 | Transient non-community | Groundwater |
| Merrill Water Department | Klamath | 907 | Community | Groundwater |
| Malin Municipal Water | Klamath | 815 | Community | Groundwater |
| Oregon Water Utilities - Mountain Lakes | Klamath | 770 | Community | Groundwater |
| Otic Beaver Marsh Ra-South | Klamath | 750 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Crescent Wtr Supply & Impr Dist, PWSID OR4100244, Oregon”, https://aquacensus.com/water-systems/oregon/crescent-wtr-supply-impr-dist-or4100244 (data as of October 1, 2026).