Public water system · KS2019117
ActiveCaldwell, City of
At a glance
City of Caldwell (PWSID KS2019117) is an active community water system in Sumner County, Kansas. It reports serving 1,019 people through 647 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in December 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,019
Service connections
647
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Caldwell compare with other water systems in Sumner County?
By EPA's size categories, City of Caldwell is a small system (501 to 3,300 people). Sumner County has 19 active public water systems. Its population served is about 19% below the county average of 1,258 people per system, and accounts for 4.3% of the 23,906 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 Caldwell 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. Kansas has 863 active community water systems, 83% of the state's 1,041 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 587 Kansas systems (56%) list groundwater as their primary source.
Who owns and regulates City of Caldwell?
EPA lists City of Caldwell as privately owned. 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. 4 of the 19 active systems in Sumner County (21%) are also privately owned.
Does City of Caldwell have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in December 2018. By type: 1 monitoring and reporting. The contaminant or rule involved is Lead and Copper Rule. EPA lists 1 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 |
|---|---|---|---|---|
| 2018-12-30 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
The one violation in EPA's records.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 Caldwell: frequently asked questions
Who runs City of Caldwell?
City of Caldwell (PWSID KS2019117) is a community water system privately owned. It is regulated by the KS state drinking water program.
How many people does City of Caldwell serve?
City of Caldwell reports serving 1,019 people through 647 service connections in Sumner County, Kansas.
Where does City of Caldwell 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 City of Caldwell have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in December 2018. 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 Caldwell'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 one violation for this system; it is not health-based, and the most recent began in December 2018. 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 Caldwell's water quality report?
As a community water system, City of Caldwell 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 Sumner County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Wellington, City of | Sumner | 7,664 | Community | Surface water |
| Mulvane, City of | Sumner | 6,587 | Community | Purchased surface water |
| Belle Plaine, City of | Sumner | 1,468 | Community | Groundwater |
| Sumner Co Rwd 5 | Sumner | 1,429 | Community | Groundwater |
| Sumner Co Rwd 4 | Sumner | 1,157 | Community | Purchased groundwater |
| Conway Springs, City of | Sumner | 1,106 | 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, “Caldwell, City of, PWSID KS2019117, Kansas”, https://aquacensus.com/water-systems/kansas/caldwell-city-of-ks2019117 (data as of October 1, 2026).