Public water system · MO4120067
ActiveHawn State Park
At a glance
Hawn State Park (PWSID MO4120067) is an active transient non-community water system in Ste. Genevieve County, Missouri. It reports serving 200 people through 15 service connections. Its primary water source is groundwater, and EPA lists it as owned by a state government. EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in June 2011.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
200
Service connections
15
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Hawn State Park compare with other water systems in Ste. Genevieve County?
By EPA's size categories, Hawn State Park is a very small system (500 people or fewer). Ste. Genevieve County has 17 active public water systems. Its population served is well below the county average of 812 people per system, and accounts for 1.4% of the 13,798 people reported by systems filed under the county. Across Missouri, the 2,943 active systems average 2,049 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Hawn State Park is about 39% above 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. Missouri has 1,103 active transient non-community water systems, 37% of the state's 2,943 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,521 Missouri systems (86%) list groundwater as their primary source.
Who owns and regulates Hawn State Park?
EPA lists Hawn State Park as owned by a state government. The MO 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 17 active systems in Ste. Genevieve County (5.9%) are also owned by a state government.
Does Hawn State Park have drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in June 2011. The violations listed here began between September 2009 and June 2011. By type: 1 public notice, recordkeeping or other, 1 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2011-06-09 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2011-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2009-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 3 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.
Hawn State Park: frequently asked questions
Who runs Hawn State Park?
Hawn State Park (PWSID MO4120067) is a transient non-community water system owned by a state government. It is regulated by the MO state drinking water program.
How many people does Hawn State Park serve?
Hawn State Park reports serving 200 people through 15 service connections in Ste. Genevieve County, Missouri.
Where does Hawn 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 Hawn State Park have any drinking water violations?
EPA's records list 3 violations for this system; 1 is health-based, and the most recent began in June 2011. 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 Hawn 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 3 violations for this system; 1 is health-based, and the most recent began in June 2011. For current results, consult EPA ECHO, or the MO state drinking water program.
Where can I find Hawn State Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Hawn 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 Ste. Genevieve County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ste Genevieve Pws | Ste. Genevieve | 4,999 | Community | Groundwater |
| Ste Genevieve County Pwsd 1 Sc | Ste. Genevieve | 3,718 | Community | Groundwater |
| Ste Genevieve County Pwsd 1 North | Ste. Genevieve | 1,287 | Community | Groundwater |
| Grayhawk Water | Ste. Genevieve | 750 | Community | Groundwater |
| Lake Forest Estates | Ste. Genevieve | 650 | Community | Groundwater |
| Bloomsdale Pws | Ste. Genevieve | 639 | 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, “Hawn State Park, PWSID MO4120067, Missouri”, https://aquacensus.com/water-systems/missouri/hawn-state-park-mo4120067 (data as of October 1, 2026).