Public water system · IA0819303
ActiveCoal Valley Water District
At a glance
Coal Valley Water District (PWSID IA0819303) is an active community water system in Boone County, Iowa. It reports serving 240 people through 96 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 4 are health-based, and the most recent began in August 2010.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
240
Service connections
96
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Coal Valley Water District compare with other water systems in Boone County?
By EPA's size categories, Coal Valley Water District is a very small system (500 people or fewer). Boone County has 12 active public water systems. Its population served is well below the county average of 2,219 people per system, and accounts for 0.9% of the 26,624 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 Coal Valley Water District 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 Coal Valley Water District?
EPA lists Coal Valley Water District as privately owned. 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 12 active systems in Boone County (42%) are also privately owned.
Does Coal Valley Water District have drinking water violations?
EPA's records list 9 violations for this system; 4 are health-based, and the most recent began in August 2010. The violations listed here began between August 1990 and August 2010. By type: 4 contaminant level above the legal limit, 4 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 9 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 |
|---|---|---|---|---|
| 2010-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 1999-10-19 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1999-07-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1998-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1991-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1990-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1990-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 9 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.
Coal Valley Water District: frequently asked questions
Who runs Coal Valley Water District?
Coal Valley Water District (PWSID IA0819303) is a community water system privately owned. It is regulated by the IA state drinking water program.
How many people does Coal Valley Water District serve?
Coal Valley Water District reports serving 240 people through 96 service connections in Boone County, Iowa.
Where does Coal Valley Water District 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 Coal Valley Water District have any drinking water violations?
EPA's records list 9 violations for this system; 4 are health-based, and the most recent began in August 2010. 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 Coal Valley Water District'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 9 violations for this system; 4 are health-based, and the most recent began in August 2010. For current results, consult the system's annual water quality report, EPA ECHO, or the IA state drinking water program.
Where can I find Coal Valley Water District's water quality report?
As a community water system, Coal Valley Water District 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 Boone County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Boone Water Works | Boone | 12,704 | Community | Groundwater under influence of surface water |
| Xenia Rwd (Boone) | Boone | 4,975 | Community | Purchased groundwater under influence |
| Madrid Water Department | Boone | 3,090 | Community | Groundwater under influence of surface water |
| Ogden Municipal Utilities | Boone | 2,419 | Community | Groundwater |
| Xenia Rwd (Madrid) | Boone | 1,635 | Community | Purchased groundwater under influence |
| Woodward Resource Center | Boone | 700 | Community | Purchased surface water |
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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, “Coal Valley Water District, PWSID IA0819303, Iowa”, https://aquacensus.com/water-systems/iowa/coal-valley-water-district-ia0819303 (data as of October 1, 2026).