Public water system · IA0848015
ActiveMadrid Water Department
At a glance
Madrid Water Department (PWSID IA0848015) is an active community water system in Boone County, Iowa. It reports serving 3,090 people through 1,240 service connections. Its primary water source is groundwater under influence of surface water, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in June 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,090
Service connections
1,240
Primary source
GU
Groundwater under influence of surface water
System type
CWS
Community water system
System record
How does Madrid Water Department compare with other water systems in Boone County?
By EPA's size categories, Madrid Water Department is a small system (501 to 3,300 people). Boone County has 12 active public water systems, and Madrid Water Department is the 3rd-largest of them by population served. Its population served is about 39% above the county average of 2,219 people per system, and accounts for 12% of the 26,624 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 Madrid Water Department is about half of 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 under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules. 7 Iowa systems (0.4%) list groundwater under influence of surface water as their primary source.
Who owns and regulates Madrid Water Department?
EPA lists Madrid Water Department 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. 4 of the 12 active systems in Boone County (33%) are also owned by a local government.
Does Madrid Water Department have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in June 2025. The violations listed here began between December 2014 and June 2025. By type: 1 required treatment not met, 1 public notice, recordkeeping or other and 1 monitoring and reporting. The contaminants or rules involved are Epichlorohydrin and Total coliform bacteria (TCR). EPA lists 3 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 |
|---|---|---|---|---|
| 2025-06-01 | Required treatment not metTreatment Techniques · code 07 | Epichlorohydrincode 2257 | Yes | Resolved |
| 2015-07-01 | Public notice, recordkeeping or otherVariance/Exemption/Other Compliance · code 08 | Not reported | No | Resolved |
| 2014-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 3 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.
Madrid Water Department: frequently asked questions
Who runs Madrid Water Department?
Madrid Water Department (PWSID IA0848015) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Madrid Water Department serve?
Madrid Water Department reports serving 3,090 people through 1,240 service connections in Boone County, Iowa.
Where does Madrid Water Department get its water?
EPA SDWIS lists this system's primary water source as groundwater under influence of surface water. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules.
Does Madrid Water Department have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in June 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 Madrid Water Department'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 3 violations for this system; 1 is health-based, and the most recent began in June 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 Madrid Water Department's water quality report?
As a community water system, Madrid Water Department 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 Boone County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Boone Water Works | Boone | 12,704 | Community | Groundwater under influence of surface water |
| Xenia Rwd (Boone) | Boone | 4,975 | Community | Purchased groundwater under influence |
| Ogden Municipal Utilities | Boone | 2,419 | Community | Groundwater |
| Xenia Rwd (Madrid) | Boone | 1,635 | Community | Purchased groundwater under influence |
| Woodward Resource Center | Boone | 700 | Community | Purchased surface water |
| Camp Mitigwa | Boone | 300 | Transient non-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, “Madrid Water Department, PWSID IA0848015, Iowa”, https://aquacensus.com/water-systems/iowa/madrid-water-department-ia0848015 (data as of October 1, 2026).