Public water system · IA9260302
ActiveTimberline Estates
At a glance
Timberline Estates (PWSID IA9260302) is an active community water system in Washington County, Iowa. It reports serving 95 people through 41 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 6 violations for this system; none is health-based, and the most recent began in January 2008.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
95
Service connections
41
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Timberline Estates compare with other water systems in Washington County?
By EPA's size categories, Timberline Estates is a very small system (500 people or fewer). Washington County has 24 active public water systems. Its population served is well below the county average of 670 people per system, and accounts for 0.6% of the 16,082 people reported by systems filed under the county. Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active community water system reports serving 6,703 people, so Timberline Estates 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. Iowa has 1,084 active community water systems, 59% of the state's 1,828 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,502 Iowa systems (82%) list groundwater as their primary source.
Who owns and regulates Timberline Estates?
EPA lists Timberline Estates as privately owned. The IA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 11 of the 24 active systems in Washington County (46%) are also privately owned.
Does Timberline Estates have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in January 2008. The violations listed here began between February 2002 and January 2008. By type: 5 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2008-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2005-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2005-03-31 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2002-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2002-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 6 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.
Timberline Estates: frequently asked questions
Who runs Timberline Estates?
Timberline Estates (PWSID IA9260302) is a community water system privately owned. It is regulated by the IA state drinking water program.
How many people does Timberline Estates serve?
Timberline Estates reports serving 95 people through 41 service connections in Washington County, Iowa.
Where does Timberline Estates 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 Timberline Estates have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in January 2008. 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 Timberline Estates' 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 6 violations for this system; none is health-based, and the most recent began in January 2008. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Timberline Estates' water quality report?
As a community water system, Timberline Estates 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 Washington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Washington Water Department | Washington | 7,362 | Community | Groundwater |
| Kalona Water Dept | Washington | 2,630 | Community | Groundwater |
| Wellman Municipal Waterworks | Washington | 1,524 | Community | Groundwater |
| Riverside Water Supply | Washington | 1,060 | Community | Groundwater |
| Brighton Municipal Water Supply | Washington | 600 | Community | Groundwater |
| Ainsworth Water Works | Washington | 511 | 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, “Timberline Estates, PWSID IA9260302, Iowa”, https://aquacensus.com/water-systems/iowa/timberline-estates-ia9260302 (data as of October 1, 2026).