Public water system · IA7909047
ActiveBrooklyn Water Department
At a glance
Brooklyn Water Department (PWSID IA7909047) is an active community water system in Poweshiek County, Iowa. It reports serving 1,505 people through 695 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; 3 are health-based, and the most recent began in February 1996.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,505
Service connections
695
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Brooklyn Water Department compare with other water systems in Poweshiek County?
By EPA's size categories, Brooklyn Water Department is a small system (501 to 3,300 people). Poweshiek County has 8 active public water systems, and Brooklyn Water Department is the 4th-largest of them by population served. Its population served is about 22% below the county average of 1,919 people per system, and accounts for 9.8% of the 15,352 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 Brooklyn Water Department 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 Brooklyn Water Department?
EPA lists Brooklyn 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. 6 of the 8 active systems in Poweshiek County (75%) are also owned by a local government.
Does Brooklyn Water Department have drinking water violations?
EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in February 1996. The violations listed here began between April 1983 and February 1996. By type: 3 contaminant level above the legal limit and 2 monitoring and reporting. The contaminant or rule involved most often is Combined Radium (-226 and -228) (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 |
|---|---|---|---|---|
| 1996-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 1991-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 1983-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Gross alpha (excluding radon and uranium)code 4000 | Yes | Resolved |
| 1983-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Combined Radium (-226 and -228)code 4010 | 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.
Brooklyn Water Department: frequently asked questions
Who runs Brooklyn Water Department?
Brooklyn Water Department (PWSID IA7909047) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Brooklyn Water Department serve?
Brooklyn Water Department reports serving 1,505 people through 695 service connections in Poweshiek County, Iowa.
Where does Brooklyn Water Department 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 Brooklyn Water Department have any drinking water violations?
EPA's records list 5 violations for this system; 3 are health-based, and the most recent began in February 1996. 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 Brooklyn 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 5 violations for this system; 3 are health-based, and the most recent began in February 1996. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Brooklyn Water Department's water quality report?
As a community water system, Brooklyn 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 Poweshiek County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Grinnell Water Department | Poweshiek | 9,564 | Community | Groundwater |
| Ponderosa Utilities Inc.. | Poweshiek | 1,750 | Community | Purchased groundwater |
| Montezuma Muni Water Supply | Poweshiek | 1,545 | Community | Groundwater |
| Grinnell MHP Mhc | Poweshiek | 313 | Community | Purchased groundwater |
| Malcom Water Supply | Poweshiek | 270 | Community | Purchased groundwater |
| Deep River Water Supply | Poweshiek | 249 | Community | Purchased 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, “Brooklyn Water Department, PWSID IA7909047, Iowa”, https://aquacensus.com/water-systems/iowa/brooklyn-water-department-ia7909047 (data as of October 1, 2026).