Public water system · IA2718755
ActiveSirwa #3 (Leon)
At a glance
Sirwa #3 (Leon) (PWSID IA2718755) is an active community water system in Decatur County, Iowa. It reports serving 1,373 people through 549 service connections. Its primary water source is purchased surface water, and EPA lists it as privately owned. EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in October 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,373
Service connections
549
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Sirwa #3 (Leon) compare with other water systems in Decatur County?
By EPA's size categories, Sirwa #3 (Leon) is a small system (501 to 3,300 people). Decatur County has 5 active public water systems, and Sirwa #3 (Leon) is the 4th-largest of them by population served. Its population served is well below the county average of 7,682 people per system, and accounts for 3.6% of the 38,411 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 Sirwa #3 (Leon) 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 119 Iowa systems (6.5%) list purchased surface water as their primary source.
Who owns and regulates Sirwa #3 (Leon)?
EPA lists Sirwa #3 (Leon) 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. 2 of the 5 active systems in Decatur County (40%) are also privately owned.
Does Sirwa #3 (Leon) have drinking water violations?
EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in October 2014. The violations listed here began between July 2000 and October 2014. By type: 3 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2014-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2014-06-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2012-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2000-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 4 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.
Sirwa #3 (Leon): frequently asked questions
Who runs Sirwa #3 (Leon)?
Sirwa #3 (Leon) (PWSID IA2718755) is a community water system privately owned. It is regulated by the IA state drinking water program.
How many people does Sirwa #3 (Leon) serve?
Sirwa #3 (Leon) reports serving 1,373 people through 549 service connections in Decatur County, Iowa.
Where does Sirwa #3 (Leon) get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Sirwa #3 (Leon) have any drinking water violations?
EPA's records list 4 violations for this system; 3 are health-based, and the most recent began in October 2014. 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 Sirwa #3 (Leon)'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 4 violations for this system; 3 are health-based, and the most recent began in October 2014. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Sirwa #3 (Leon)'s water quality report?
As a community water system, Sirwa #3 (Leon) 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 Decatur County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Rathbun Regional Water Assn (Rathbun) | Decatur + 7 more | 33,000 | Community | Surface water |
| Lamoni Municipal Utilities | Decatur | 2,029 | Community | Surface water |
| Leon Water Supply | Decatur | 1,830 | Community | Surface water |
| Garden Grove Water Supply | Decatur | 179 | 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, “Sirwa #3 (Leon), PWSID IA2718755, Iowa”, https://aquacensus.com/water-systems/iowa/sirwa-3-leon-ia2718755 (data as of October 1, 2026).