Public water system · IA0140007
ActiveGreenfield Municipal Utilities
At a glance
Greenfield Municipal Utilities (PWSID IA0140007) is an active community water system in Adair County, Iowa. It reports serving 2,227 people through 1,058 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; 3 are health-based, and the most recent began in August 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,227
Service connections
1,058
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Greenfield Municipal Utilities compare with other water systems in Adair County?
By EPA's size categories, Greenfield Municipal Utilities is a small system (501 to 3,300 people). Adair County has 6 active public water systems, and Greenfield Municipal Utilities is the largest of them by population served. Its population served is about 76% above the county average of 1,267 people per system, and accounts for 29% of the 7,600 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 Greenfield 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 24 Iowa systems (1.3%) list surface water as their primary source.
Who owns and regulates Greenfield Municipal Utilities?
EPA lists Greenfield 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. 5 of the 6 active systems in Adair County (83%) are also owned by a local government.
Does Greenfield Municipal Utilities have drinking water violations?
EPA's records list 8 violations for this system; 3 are health-based, and the most recent began in August 2020. The violations listed here began between July 2004 and August 2020. By type: 5 monitoring and reporting and 3 required treatment not met. The contaminant or rule involved most often is Interim Enhanced Surface Water Treatment Rule (3 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 |
|---|---|---|---|---|
| 2020-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2020-08-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2017-07-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2012-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2012-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2008-08-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2005-06-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2004-07-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | 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.
Greenfield Municipal Utilities: frequently asked questions
Who runs Greenfield Municipal Utilities?
Greenfield Municipal Utilities (PWSID IA0140007) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Greenfield Municipal Utilities serve?
Greenfield Municipal Utilities reports serving 2,227 people through 1,058 service connections in Adair County, Iowa.
Where does Greenfield Municipal Utilities get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Greenfield Municipal Utilities have any drinking water violations?
EPA's records list 8 violations for this system; 3 are health-based, and the most recent began in August 2020. 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 Greenfield 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; 3 are health-based, and the most recent began in August 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Greenfield Municipal Utilities' water quality report?
As a community water system, Greenfield 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 Adair County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Stuart Water Supply | Adair | 1,814 | Community | Purchased surface water |
| Sirwa #1 (Greenfield) | Adair | 1,712 | Community | Purchased surface water |
| Adair Municipal Water Supply | Adair | 809 | Community | Groundwater |
| Fontanelle Water Works | Adair | 670 | Community | Purchased surface water |
| Orient Municipal Water Supply | Adair | 368 | Community | Purchased surface water |
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, “Greenfield Municipal Utilities, PWSID IA0140007, Iowa”, https://aquacensus.com/water-systems/iowa/greenfield-municipal-utilities-ia0140007 (data as of October 1, 2026).