Public water system · IA3135018

Active

Farley Water Supply

At a glance

Farley Water Supply (PWSID IA3135018) is an active community water system in Dubuque County, Iowa. It reports serving 1,766 people through 615 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; 7 are health-based, and the most recent began in July 2018.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

1,766

Service connections

615

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDIA3135018

System typeCommunity water system

Activity statusActive

Population served1,766

Service connections615

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyIA state drinking water program

City servedFarley

StateIowa

ZIP—

CountyDubuque County

How does Farley Water Supply compare with other water systems in Dubuque County?

By EPA's size categories, Farley Water Supply is a small system (501 to 3,300 people). Dubuque County has 74 active public water systems. Its population served is about 41% above the county average of 1,255 people per system, and accounts for 1.9% of the 92,853 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 Farley 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 Farley Water Supply?

EPA lists Farley 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. 22 of the 74 active systems in Dubuque County (30%) are also owned by a local government.

Does Farley Water Supply have drinking water violations?

EPA's records list 8 violations for this system; 7 are health-based, and the most recent began in July 2018. The violations listed here began between January 2013 and July 2018. By type: 7 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Combined Radium (-226 and -228) (7 of them). EPA lists 7 as resolved and 1 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.

Began	Violation	Contaminant or rule	Health-based	Status
2018-07-01	Monitoring and reportingMonitoring, Regular · code 03	Gross alpha (excluding radon and uranium)code 4000	No	Archived
2016-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Radium (-226 and -228)code 4010	Yes	Resolved
2015-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Radium (-226 and -228)code 4010	Yes	Resolved
2015-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Radium (-226 and -228)code 4010	Yes	Resolved
2013-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Radium (-226 and -228)code 4010	Yes	Resolved
2013-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Radium (-226 and -228)code 4010	Yes	Resolved
2013-04-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Radium (-226 and -228)code 4010	Yes	Resolved
2013-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Combined Radium (-226 and -228)code 4010	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.

Farley Water Supply: frequently asked questions

Who runs Farley Water Supply?

Farley Water Supply (PWSID IA3135018) is a community water system owned by a local government. It is regulated by the IA state drinking water program.

How many people does Farley Water Supply serve?

Farley Water Supply reports serving 1,766 people through 615 service connections in Dubuque County, Iowa.

Where does Farley 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 Farley Water Supply have any drinking water violations?

EPA's records list 8 violations for this system; 7 are health-based, and the most recent began in July 2018. 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 Farley 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 8 violations for this system; 7 are health-based, and the most recent began in July 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.

Where can I find Farley Water Supply's water quality report?

As a community water system, Farley 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 Dubuque County

Water system	County	Population served	Type	Source
Dubuque Water Works	Dubuque	59,667	Community	Groundwater
Asbury Municipal Water System	Dubuque	5,943	Community	Groundwater
Dyersville Municipal Water Co	Dubuque	4,477	Community	Groundwater
John Deere Dubuque Works	Dubuque	3,000	Non-transient non-community	Groundwater
Cascade Municipal Water Supply	Dubuque	2,386	Community	Groundwater
Peosta Water Supply	Dubuque	2,278	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, “Farley Water Supply, PWSID IA3135018, Iowa”, https://aquacensus.com/water-systems/iowa/farley-water-supply-ia3135018 (data as of October 1, 2026).