Public water system · KS2016124
ActiveRiley, City of
At a glance
City of Riley (PWSID KS2016124) is an active community water system in Riley County, Kansas. It reports serving 977 people through 444 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; none is health-based, and the most recent began in December 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
977
Service connections
444
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does City of Riley compare with other water systems in Riley County?
By EPA's size categories, City of Riley is a small system (501 to 3,300 people). Riley County has 13 active public water systems, and City of Riley is the 5th-largest of them by population served. Its population served is well below the county average of 4,819 people per system, and accounts for 1.6% of the 62,651 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 Riley 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 Riley?
EPA lists City of Riley 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 13 active systems in Riley County (54%) are also owned by a local government.
Does City of Riley have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in December 2020. The violations listed here began between July 2001 and December 2020. By type: 4 public notice, recordkeeping or other and 2 monitoring and reporting. The contaminant or rule involved most often is Consumer Confidence Rule (4 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2020-12-31 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2018-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 2004-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2003-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2002-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2001-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
All 6 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 Riley: frequently asked questions
Who runs City of Riley?
City of Riley (PWSID KS2016124) 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 Riley serve?
City of Riley reports serving 977 people through 444 service connections in Riley County, Kansas.
Where does City of Riley 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 Riley have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in December 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 Riley'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 6 violations for this system; none is health-based, and the most recent began in December 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 Riley's water quality report?
As a community water system, City of Riley 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 Riley County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Manhattan, City of | Riley | 54,763 | Community | Groundwater |
| Riley Co Rwd 1 | Riley | 2,108 | Community | Purchased groundwater |
| Ogden, City of | Riley | 1,721 | Community | Groundwater |
| Colonial Gardens Mobile Home Ct | Riley | 1,200 | Community | Purchased groundwater |
| Riverchase Mobile Home Park | Riley | 460 | Community | Groundwater |
| Leonardville, City of | Riley | 436 | 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, “Riley, City of, PWSID KS2016124, Kansas”, https://aquacensus.com/water-systems/kansas/riley-city-of-ks2016124 (data as of October 1, 2026).