Public water system · IA2835056
ActiveHopkinton Municipal Utilities
At a glance
Hopkinton Municipal Utilities (PWSID IA2835056) is an active community water system in Delaware County, Iowa. It reports serving 622 people through 325 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; none is health-based, and the most recent began in October 2006.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
622
Service connections
325
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Hopkinton Municipal Utilities compare with other water systems in Delaware County?
By EPA's size categories, Hopkinton Municipal Utilities is a small system (501 to 3,300 people). Delaware County has 28 active public water systems, and Hopkinton Municipal Utilities is the 3rd-largest of them by population served. Its population served is about 85% above the county average of 336 people per system, and accounts for 6.6% 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 Hopkinton Municipal Utilities 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 Hopkinton Municipal Utilities?
EPA lists Hopkinton Municipal Utilities 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 Hopkinton Municipal Utilities have drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in October 2006. The violations listed here began between October 1986 and October 2006. By type: 8 monitoring and reporting. The contaminant or rule involved most often is Combined Radium (-226 and -228) (2 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2006-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2006-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2005-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2003-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2003-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 1994-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 1986-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 1986-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
All 8 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.
Hopkinton Municipal Utilities: frequently asked questions
Who runs Hopkinton Municipal Utilities?
Hopkinton Municipal Utilities (PWSID IA2835056) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Hopkinton Municipal Utilities serve?
Hopkinton Municipal Utilities reports serving 622 people through 325 service connections in Delaware County, Iowa.
Where does Hopkinton Municipal Utilities 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 Hopkinton Municipal Utilities have any drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in October 2006. 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 Hopkinton Municipal Utilities' 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 8 violations for this system; none is health-based, and the most recent began in October 2006. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Hopkinton Municipal Utilities' water quality report?
As a community water system, Hopkinton Municipal Utilities 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 |
| 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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Hopkinton Municipal Utilities, PWSID IA2835056, Iowa”, https://aquacensus.com/water-systems/iowa/hopkinton-municipal-utilities-ia2835056 (data as of October 1, 2026).