Public water system · KS2009106
ActiveGardner, City of
At a glance
City of Gardner (PWSID KS2009106) is an active community water system in Johnson County, Kansas. It reports serving 23,942 people through 7,973 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, 9 are health-based, and the most recent began in July 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
23,942
Service connections
7,973
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does City of Gardner compare with other water systems in Johnson County?
By EPA's size categories, City of Gardner is a large system (10,001 to 100,000 people). Johnson County has 8 active public water systems, and City of Gardner is the 3rd-largest of them by population served. Its population served is well below the county average of 83,844 people per system, and accounts for 3.6% of the 670,749 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 Gardner is about 3.6 times 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 Gardner?
EPA lists City of Gardner 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. 7 of the 8 active systems in Johnson County (88%) are also owned by a local government.
Does City of Gardner have drinking water violations?
Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in July 2019. The violations listed here began between July 2002 and July 2019. By type: 5 contaminant level above the legal limit, 4 required treatment not met, 2 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminant or rule involved most often is Carbon, total (4 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 |
|---|---|---|---|---|
| 2019-07-02 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2011-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2005-07-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2005-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2005-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2005-04-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2005-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2005-01-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2004-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2004-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2004-10-01 | Required treatment not metTreatment Technique Precursor Removal · code 46 | Carbon, totalcode 2920 | Yes | Resolved |
| 2002-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | 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 Gardner: frequently asked questions
Who runs City of Gardner?
City of Gardner (PWSID KS2009106) 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 Gardner serve?
City of Gardner reports serving 23,942 people through 7,973 service connections in Johnson County, Kansas.
Where does City of Gardner 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 Gardner have any drinking water violations?
Of the 12 most recent violations in EPA's records, 9 are health-based, and the most recent began in July 2019. 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 Gardner'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, 9 are health-based, and the most recent began in July 2019. 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 Gardner's water quality report?
As a community water system, City of Gardner 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 Johnson County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Water District 1 of Johnson Co | Johnson | 490,000 | Community | Surface water |
| Olathe, City of | Johnson | 143,014 | Community | Surface water |
| Johnson Co Rwd 7 | Johnson | 6,457 | Community | Purchased surface water |
| Desoto, City of | Johnson | 4,645 | Community | Groundwater |
| Edgerton, City of | Johnson | 1,741 | Community | Purchased surface water |
| New Century Air Center | Johnson | 500 | Non-transient non-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, “Gardner, City of, PWSID KS2009106, Kansas”, https://aquacensus.com/water-systems/kansas/gardner-city-of-ks2009106 (data as of October 1, 2026).