Public water system · KS2000103
ActiveIola, City of
At a glance
City of Iola (PWSID KS2000103) is an active community water system in Allen County, Kansas. It reports serving 5,343 people through 2,668 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in June 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
5,343
Service connections
2,668
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does City of Iola compare with other water systems in Allen County?
By EPA's size categories, City of Iola is a medium system (3,301 to 10,000 people). Allen County has 14 active public water systems, and City of Iola is the largest of them by population served. Its population served is about 7.5 times the county average of 714 people per system, and accounts for 53% of the 9,991 people reported by systems filed under the county. Across Kansas, the 1,041 active systems average 2,800 people each. Nationally, the average active community water system reports serving 6,703 people, so City of Iola is about 20% 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. Kansas has 863 active community water systems, 83% of the state's 1,041 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 75 Kansas systems (7.2%) list surface water as their primary source.
Who owns and regulates City of Iola?
EPA lists City of Iola as owned by a local government. The KS state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 14 of the 14 active systems in Allen County (100%) are also owned by a local government.
Does City of Iola have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in June 2020. The violations listed here began between February 2017 and June 2020. By type: 12 monitoring and reporting. The contaminant or rule involved most often is Cryptosporidium (11 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 |
|---|---|---|---|---|
| 2020-06-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Long Term 2 Enhanced Surface Water Treatment Rulecode 0800 | No | Resolved |
| 2018-11-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | No | Resolved |
| 2018-08-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | No | Resolved |
| 2018-07-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | No | Resolved |
| 2018-06-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | No | Resolved |
| 2018-03-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | No | Resolved |
| 2018-02-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | No | Resolved |
| 2017-12-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | No | Resolved |
| 2017-11-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | No | Resolved |
| 2017-06-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | No | Resolved |
| 2017-03-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | No | Resolved |
| 2017-02-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | Cryptosporidiumcode 3015 | 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.
City of Iola: frequently asked questions
Who runs City of Iola?
City of Iola (PWSID KS2000103) is a community water system owned by a local government. It is regulated by the KS state drinking water program.
How many people does City of Iola serve?
City of Iola reports serving 5,343 people through 2,668 service connections in Allen County, Kansas.
Where does City of Iola get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does City of Iola have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in June 2020. 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 City of Iola'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, none is health-based, and the most recent began in June 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the KS state drinking water program.
Where can I find City of Iola's water quality report?
As a community water system, City of Iola 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 Allen County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Humboldt, City of | Allen | 1,836 | Community | Surface water |
| Allen Co Rwd 8 | Allen | 736 | Community | Purchased surface water |
| Gas City, City of | Allen | 501 | Community | Purchased surface water |
| La Harpe, City of | Allen | 484 | Community | Purchased surface water |
| Moran, City of | Allen | 467 | Community | Purchased surface water |
| Allen Co Rwd 15 | Allen | 135 | Community | Purchased surface water |
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, “Iola, City of, PWSID KS2000103, Kansas”, https://aquacensus.com/water-systems/kansas/iola-city-of-ks2000103 (data as of October 1, 2026).