Public water system · IA0960045
ActivePlainfield Water Supply
At a glance
Plainfield Water Supply (PWSID IA0960045) is an active community water system in Bremer County, Iowa. It reports serving 393 people through 204 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 4 are health-based, and the most recent began in December 1997.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
393
Service connections
204
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Plainfield Water Supply compare with other water systems in Bremer County?
By EPA's size categories, Plainfield Water Supply is a very small system (500 people or fewer). Bremer County has 16 active public water systems. Its population served is well below the county average of 3,535 people per system, and accounts for 0.7% of the 56,553 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 Plainfield 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. 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 Plainfield Water Supply?
EPA lists Plainfield 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. 10 of the 16 active systems in Bremer County (63%) are also owned by a local government.
Does Plainfield Water Supply have drinking water violations?
EPA's records list 5 violations for this system; 4 are health-based, and the most recent began in December 1997. The violations listed here began between July 1987 and December 1997. By type: 4 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 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 |
|---|---|---|---|---|
| 1997-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1997-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1997-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Single Sample · code 01 | Nitratecode 1040 | Yes | Resolved |
| 1987-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | 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.
Plainfield Water Supply: frequently asked questions
Who runs Plainfield Water Supply?
Plainfield Water Supply (PWSID IA0960045) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Plainfield Water Supply serve?
Plainfield Water Supply reports serving 393 people through 204 service connections in Bremer County, Iowa.
Where does Plainfield Water Supply 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 Plainfield Water Supply have any drinking water violations?
EPA's records list 5 violations for this system; 4 are health-based, and the most recent began in December 1997. 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 Plainfield 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; 4 are health-based, and the most recent began in December 1997. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Plainfield Water Supply's water quality report?
As a community water system, Plainfield 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 Bremer County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ia Regional Utilities Assoc (Waverly) | Bremer + 7 more | 37,820 | Community | Groundwater |
| Waverly Water Department | Bremer | 10,394 | Community | Groundwater |
| Sumner Water Supply | Bremer | 2,030 | Community | Groundwater |
| Denver Water Supply | Bremer | 1,919 | Community | Groundwater |
| Tripoli Water Supply | Bremer | 1,191 | Community | Groundwater |
| Janesville Water Supply | Bremer | 1,034 | 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, “Plainfield Water Supply, PWSID IA0960045, Iowa”, https://aquacensus.com/water-systems/iowa/plainfield-water-supply-ia0960045 (data as of October 1, 2026).