Public water system · IA2813019
ActiveDelaware Municipal Water Supply
At a glance
Delaware Municipal Water Supply (PWSID IA2813019) is an active community water system in Delaware County, Iowa. It reports serving 142 people through 42 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, none is health-based, and the most recent began in February 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
142
Service connections
42
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Delaware Municipal Water Supply compare with other water systems in Delaware County?
By EPA's size categories, Delaware Municipal Water Supply is a very small system (500 people or fewer). Delaware County has 28 active public water systems. Its population served is about 58% below the county average of 336 people per system, and accounts for 1.5% 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 Delaware Municipal 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 Delaware Municipal Water Supply?
EPA lists Delaware Municipal 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 Delaware Municipal Water Supply have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in February 2018. The violations listed here began between July 1999 and February 2018. By type: 11 monitoring and reporting and 1 monitoring. The contaminants or rules involved are Revised Total Coliform Rule, Gross alpha (excluding radon and uranium), cis-1,2-Dichloroethylene and Selenium. 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 |
|---|---|---|---|---|
| 2018-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2009-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | cis-1,2-Dichloroethylenecode 2380 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Seleniumcode 1045 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Antimonycode 1074 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Thalliumcode 1085 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | 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.
Delaware Municipal Water Supply: frequently asked questions
Who runs Delaware Municipal Water Supply?
Delaware Municipal Water Supply (PWSID IA2813019) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Delaware Municipal Water Supply serve?
Delaware Municipal Water Supply reports serving 142 people through 42 service connections in Delaware County, Iowa.
Where does Delaware Municipal 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 Delaware Municipal Water Supply 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 February 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 Delaware Municipal 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, none is health-based, and the most recent began in February 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Delaware Municipal Water Supply's water quality report?
As a community water system, Delaware Municipal 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, “Delaware Municipal Water Supply, PWSID IA2813019, Iowa”, https://aquacensus.com/water-systems/iowa/delaware-municipal-water-supply-ia2813019 (data as of October 1, 2026).