Public water system · IA3815042
ActiveDike Water Supply
At a glance
Dike Water Supply (PWSID IA3815042) is an active community water system in Grundy County, Iowa. It reports serving 1,306 people through 561 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in July 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,306
Service connections
561
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Dike Water Supply compare with other water systems in Grundy County?
By EPA's size categories, Dike Water Supply is a small system (501 to 3,300 people). Grundy County has 8 active public water systems, and Dike Water Supply is the 3rd-largest of them by population served. Its population served is about 27% above the county average of 1,026 people per system, and accounts for 16% of the 8,205 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 Dike 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 156 Iowa systems (8.5%) list purchased groundwater as their primary source.
Who owns and regulates Dike Water Supply?
EPA lists Dike 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. 8 of the 8 active systems in Grundy County (100%) are also owned by a local government.
Does Dike Water Supply have drinking water violations?
EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in July 2019. The violations listed here began between November 1997 and July 2019. By type: 2 monitoring and reporting, 2 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2019-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | Resolved |
| 2005-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2002-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1997-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1997-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 5 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.
Dike Water Supply: frequently asked questions
Who runs Dike Water Supply?
Dike Water Supply (PWSID IA3815042) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Dike Water Supply serve?
Dike Water Supply reports serving 1,306 people through 561 service connections in Grundy County, Iowa.
Where does Dike Water Supply get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Dike Water Supply have any drinking water violations?
EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in July 2019. 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 Dike 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 5 violations for this system; 2 are health-based, and the most recent began in July 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Dike Water Supply's water quality report?
As a community water system, Dike 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 Grundy County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Grundy Center Water Supply | Grundy | 2,796 | Community | Purchased groundwater |
| Reinbeck Water Supply | Grundy | 1,662 | Community | Groundwater |
| Conrad Water Supply | Grundy | 1,098 | Community | Purchased groundwater |
| Wellsburg Water Supply | Grundy | 721 | Community | Purchased groundwater |
| Holland Water Supply | Grundy | 270 | Community | Purchased groundwater |
| Stout Water Supply | Grundy | 191 | 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, “Dike Water Supply, PWSID IA3815042, Iowa”, https://aquacensus.com/water-systems/iowa/dike-water-supply-ia3815042 (data as of October 1, 2026).