Public water system · IA2900626
ActiveTimberline Estates, Ltd.
At a glance
Timberline Estates, Ltd. (PWSID IA2900626) is an active community water system in Des Moines County, Iowa. It reports serving 712 people through 282 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in December 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
712
Service connections
282
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Timberline Estates, Ltd. compare with other water systems in Des Moines County?
By EPA's size categories, Timberline Estates, Ltd. is a small system (501 to 3,300 people). Des Moines County has 11 active public water systems. Its population served is well below the county average of 3,927 people per system, and accounts for 1.6% of the 43,192 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, Ltd. 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, Ltd.?
EPA lists Timberline Estates, Ltd. 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. 5 of the 11 active systems in Des Moines County (45%) are also privately owned.
Does Timberline Estates, Ltd. have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in December 2025. The violations listed here began between September 1980 and December 2025. By type: 6 contaminant level above the legal limit, 4 monitoring and reporting and 2 monitoring. The contaminant or rule involved most often is Combined Radium (-226 and -228) (3 of them). EPA lists 8 as archived and 4 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-12-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2025-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2009-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1985-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Archived |
| 1984-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Archived |
| 1984-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Fluoridecode 1025 | Yes | Archived |
| 1983-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Fluoridecode 1025 | Yes | Archived |
| 1983-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Combined Radium (-226 and -228)code 4010 | Yes | Archived |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Archived |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
| 1980-09-30 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | 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.
Timberline Estates, Ltd.: frequently asked questions
Who runs Timberline Estates, Ltd.?
Timberline Estates, Ltd. (PWSID IA2900626) is a community water system privately owned. It is regulated by the IA state drinking water program.
How many people does Timberline Estates, Ltd. serve?
Timberline Estates, Ltd. reports serving 712 people through 282 service connections in Des Moines County, Iowa.
Where does Timberline Estates, Ltd. 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, Ltd. 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 December 2025. 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, Ltd.'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 December 2025. 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, Ltd.'s water quality report?
As a community water system, Timberline Estates, Ltd. 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 Des Moines County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Burlington Municipal Waterworks | Des Moines | 26,015 | Community | Surface water |
| Rathbun Reg Wtr Assn (Burlington) | Des Moines + 1 more | 8,375 | Community | Purchased surface water |
| West Burlington Muni. Water Supply | Des Moines | 3,728 | Community | Purchased surface water |
| Mediapolis Water Supply | Des Moines | 1,688 | Community | Purchased surface water |
| Iowa Army Ammunition Plant | Des Moines | 1,100 | Non-transient non-community | Purchased surface water |
| Danville Water Supply | Des Moines | 923 | Community | Purchased 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, “Timberline Estates, Ltd., PWSID IA2900626, Iowa”, https://aquacensus.com/water-systems/iowa/timberline-estates-ltd-ia2900626 (data as of October 1, 2026).