Public water system · MO4256181
ActiveLake Seven Falls Assn Inc.
At a glance
Lake Seven Falls Assn Inc. (PWSID MO4256181) is an active community water system in Ste. Genevieve County, Missouri. It reports serving 475 people through 76 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
475
Service connections
76
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Lake Seven Falls Assn Inc. compare with other water systems in Ste. Genevieve County?
By EPA's size categories, Lake Seven Falls Assn Inc. is a very small system (500 people or fewer). Ste. Genevieve County has 17 active public water systems. Its population served is about 41% below the county average of 812 people per system, and accounts for 3.4% 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 community water system reports serving 6,703 people, so Lake Seven Falls Assn Inc. 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. Missouri has 1,612 active community water systems, 55% 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 Lake Seven Falls Assn Inc.?
EPA lists Lake Seven Falls Assn Inc. as privately owned. 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. 11 of the 17 active systems in Ste. Genevieve County (65%) are also privately owned.
Does Lake Seven Falls Assn Inc. have drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in April 2025. The violations listed here began between May 2006 and April 2025. By type: 5 contaminant level above the legal limit, 3 public notice, recordkeeping or other, 2 monitoring and 2 monitoring and reporting. The contaminant or rule involved most often is Combined Radium (-226 and -228) (5 of them). 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 |
|---|---|---|---|---|
| 2025-04-23 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2024-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 2024-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 2024-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 2023-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 2023-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Combined Radium (-226 and -228)code 4010 | Yes | Resolved |
| 2019-09-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2012-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2012-04-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2011-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2006-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | 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.
Lake Seven Falls Assn Inc.: frequently asked questions
Who runs Lake Seven Falls Assn Inc.?
Lake Seven Falls Assn Inc. (PWSID MO4256181) is a community water system privately owned. It is regulated by the MO state drinking water program.
How many people does Lake Seven Falls Assn Inc. serve?
Lake Seven Falls Assn Inc. reports serving 475 people through 76 service connections in Ste. Genevieve County, Missouri.
Where does Lake Seven Falls Assn Inc. 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 Lake Seven Falls Assn Inc. have any drinking water violations?
Of the 12 most recent violations in EPA's records, 5 are health-based, and the most recent began in April 2025. 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 Lake Seven Falls Assn Inc.'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, 5 are health-based, and the most recent began in April 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Lake Seven Falls Assn Inc.'s water quality report?
As a community water system, Lake Seven Falls Assn Inc. 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 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, “Lake Seven Falls Assn Inc., PWSID MO4256181, Missouri”, https://aquacensus.com/water-systems/missouri/lake-seven-falls-assn-inc-mo4256181 (data as of October 1, 2026).