Public water system · IA0970006
ActiveSumner Water Supply
At a glance
Sumner Water Supply (PWSID IA0970006) is an active community water system in Bremer County, Iowa. It reports serving 2,030 people through 900 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2008.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,030
Service connections
900
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Sumner Water Supply compare with other water systems in Bremer County?
By EPA's size categories, Sumner Water Supply is a small system (501 to 3,300 people). Bremer County has 16 active public water systems, and Sumner Water Supply is the 3rd-largest of them by population served. Its population served is about 43% below the county average of 3,535 people per system, and accounts for 3.6% 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 Sumner 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 Sumner Water Supply?
EPA lists Sumner 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 Sumner Water Supply have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2008. The violations listed here began between July 2003 and October 2008. By type: 12 monitoring and reporting. The contaminants or rules involved are Nitrate, Haloacetic acids (HAA5), Total trihalomethanes (TTHM) and Total coliform bacteria (TCR). EPA lists 12 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 |
|---|---|---|---|---|
| 2008-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2008-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2006-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Benzo(a)pyrenecode 2306 | No | Resolved |
| 2003-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloroethanecode 2980 | No | Resolved |
| 2003-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
| 2003-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Dalaponcode 2031 | No | Resolved |
| 2003-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 2003-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,2-Dichloropropanecode 2983 | No | Resolved |
| 2003-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
| 2003-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
The 12 most recent 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.
Sumner Water Supply: frequently asked questions
Who runs Sumner Water Supply?
Sumner Water Supply (PWSID IA0970006) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Sumner Water Supply serve?
Sumner Water Supply reports serving 2,030 people through 900 service connections in Bremer County, Iowa.
Where does Sumner 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 Sumner Water Supply have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2008. 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 Sumner 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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in October 2008. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Sumner Water Supply's water quality report?
As a community water system, Sumner 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 |
| 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 |
| Readlyn Water Supply | Bremer | 845 | 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, “Sumner Water Supply, PWSID IA0970006, Iowa”, https://aquacensus.com/water-systems/iowa/sumner-water-supply-ia0970006 (data as of October 1, 2026).