Public water system · IA9778966
ActiveStone State Park
At a glance
Stone State Park (PWSID IA9778966) is an active transient non-community water system in Woodbury County, Iowa. It reports serving 150 people through 21 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 8 violations for this system; 2 are health-based, and the most recent began in May 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
150
Service connections
21
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Stone State Park compare with other water systems in Woodbury County?
By EPA's size categories, Stone State Park is a very small system (500 people or fewer). Woodbury County has 32 active public water systems. Its population served is well below the county average of 3,110 people per system, and accounts for 0.2% of the 99,514 people reported by systems filed under the county. Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Stone State Park is roughly in line with that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Iowa has 626 active transient non-community water systems, 34% 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 Stone State Park?
EPA lists Stone State Park as owned by a state 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. 1 of the 32 active systems in Woodbury County (3.1%) are also owned by a state government.
Does Stone State Park have drinking water violations?
EPA's records list 8 violations for this system; 2 are health-based, and the most recent began in May 2020. The violations listed here began between June 1995 and May 2020. By type: 5 monitoring and reporting, 2 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 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 |
|---|---|---|---|---|
| 2020-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2011-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2002-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2001-11-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 1995-06-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitritecode 1041 | No | 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.
Stone State Park: frequently asked questions
Who runs Stone State Park?
Stone State Park (PWSID IA9778966) is a transient non-community water system owned by a state government. It is regulated by the IA state drinking water program.
How many people does Stone State Park serve?
Stone State Park reports serving 150 people through 21 service connections in Woodbury County, Iowa.
Where does Stone State Park 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 Stone State Park have any drinking water violations?
EPA's records list 8 violations for this system; 2 are health-based, and the most recent began in May 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 Stone State Park'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; 2 are health-based, and the most recent began in May 2020. For current results, consult EPA ECHO, or the IA state drinking water program.
Where can I find Stone State Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Stone State Park is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Woodbury County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Sioux City Water Supply | Woodbury | 85,791 | Community | Groundwater under influence of surface water |
| Sergeant Bluff Water Supply | Woodbury | 5,015 | Community | Groundwater |
| Moville Water Supply | Woodbury | 1,687 | Community | Groundwater |
| Sloan Water Supply | Woodbury | 1,042 | Community | Groundwater |
| Lawton Water Supply | Woodbury | 988 | Community | Groundwater |
| Correctionville Water Supply | Woodbury | 766 | 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, “Stone State Park, PWSID IA9778966, Iowa”, https://aquacensus.com/water-systems/iowa/stone-state-park-ia9778966 (data as of October 1, 2026).