Public water system · IA2839021
ActiveManchester Water Supply
At a glance
Manchester Water Supply (PWSID IA2839021) is an active community water system in Delaware County, Iowa. It reports serving 5,077 people through 2,210 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in April 1988.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
5,077
Service connections
2,210
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Manchester Water Supply compare with other water systems in Delaware County?
By EPA's size categories, Manchester Water Supply is a medium system (3,301 to 10,000 people). Delaware County has 28 active public water systems, and Manchester Water Supply is the largest of them by population served. Its population served is about 15 times the county average of 336 people per system, and accounts for 54% 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 Manchester Water Supply is about 24% 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 Manchester Water Supply?
EPA lists Manchester 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 Manchester Water Supply have drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in April 1988. The violations listed here began between October 1983 and April 1988. By type: 1 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Nitrate (2 of them). EPA lists 1 as resolved and 1 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1988-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1983-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Archived |
All 2 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.
Manchester Water Supply: frequently asked questions
Who runs Manchester Water Supply?
Manchester Water Supply (PWSID IA2839021) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Manchester Water Supply serve?
Manchester Water Supply reports serving 5,077 people through 2,210 service connections in Delaware County, Iowa.
Where does Manchester 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 Manchester Water Supply have any drinking water violations?
EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in April 1988. 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 Manchester 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. EPA's records list 2 violations for this system; 1 is health-based, and the most recent began in April 1988. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Manchester Water Supply's water quality report?
As a community water system, Manchester 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 |
|---|---|---|---|---|
| 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 |
| Ryan Water Supply | Delaware | 350 | 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, “Manchester Water Supply, PWSID IA2839021, Iowa”, https://aquacensus.com/water-systems/iowa/manchester-water-supply-ia2839021 (data as of October 1, 2026).