Public water system · IA2864013
ActiveRyan Water Supply
At a glance
Ryan Water Supply (PWSID IA2864013) is an active community water system in Delaware County, Iowa. It reports serving 350 people through 160 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
350
Service connections
160
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Ryan Water Supply compare with other water systems in Delaware County?
By EPA's size categories, Ryan Water Supply is a very small system (500 people or fewer). Delaware County has 28 active public water systems. Its population served is roughly in line with the county average of 336 people per system, and accounts for 3.7% of the 9,400 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 Ryan Water Supply 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,502 Iowa systems (82%) list groundwater as their primary source.
Who owns and regulates Ryan Water Supply?
EPA lists Ryan Water Supply as owned by a local government. 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. 10 of the 28 active systems in Delaware County (36%) are also owned by a local government.
Does Ryan Water Supply have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2025. The violations listed here began between April 2005 and July 2025. By type: 8 monitoring and reporting, 2 public notice, recordkeeping or other, 1 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Nitrite (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 |
|---|---|---|---|---|
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2019-11-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2018-12-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2018-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitritecode 1041 | Yes | Resolved |
| 2017-12-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2017-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2017-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2010-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2010-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2006-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2005-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | 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.
Ryan Water Supply: frequently asked questions
Who runs Ryan Water Supply?
Ryan Water Supply (PWSID IA2864013) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Ryan Water Supply serve?
Ryan Water Supply reports serving 350 people through 160 service connections in Delaware County, Iowa.
Where does Ryan Water Supply 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 Ryan Water Supply have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2025. 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 Ryan Water Supply'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, one is health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Ryan Water Supply's water quality report?
As a community water system, Ryan Water Supply 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 Delaware County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Manchester Water Supply | Delaware | 5,077 | Community | Groundwater |
| Earlville Muni Water Supply | Delaware | 724 | Community | Groundwater |
| Hopkinton Municipal Utilities | Delaware | 622 | Community | Groundwater |
| Backbone State Park | Delaware | 508 | Transient non-community | Groundwater |
| Delhi Water Supply | Delaware | 420 | Community | Groundwater |
| Colesburg Water Supply | Delaware | 386 | 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, “Ryan Water Supply, PWSID IA2864013, Iowa”, https://aquacensus.com/water-systems/iowa/ryan-water-supply-ia2864013 (data as of October 1, 2026).