Public water system · MO6036075
ActiveFranklin County Pwsd 3 Lake Serene
At a glance
Franklin County Pwsd 3 Lake Serene (PWSID MO6036075) is an active community water system in Franklin County, Missouri. It reports serving 600 people through 180 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2008.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
600
Service connections
180
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Franklin County Pwsd 3 Lake Serene compare with other water systems in Franklin County?
By EPA's size categories, Franklin County Pwsd 3 Lake Serene is a small system (501 to 3,300 people). Franklin County has 81 active public water systems. Its population served is about 32% below the county average of 876 people per system, and accounts for 0.8% of the 70,978 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 Franklin County Pwsd 3 Lake Serene 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 Franklin County Pwsd 3 Lake Serene?
EPA lists Franklin County Pwsd 3 Lake Serene as owned by a local 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. 23 of the 81 active systems in Franklin County (28%) are also owned by a local government.
Does Franklin County Pwsd 3 Lake Serene have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2008. The violations listed here began between September 1999 and April 2008. By type: 10 monitoring and reporting, 1 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (9 of them). EPA lists 10 as resolved and 2 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 |
|---|---|---|---|---|
| 2008-04-01 | Monitoring and reportingMonitoring, Routine (IDSE) · code 30 | Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600 | No | Resolved |
| 2005-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Archived |
| 2004-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2003-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2002-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2000-11-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2000-01-11 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1999-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-09-01 | 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.
Franklin County Pwsd 3 Lake Serene: frequently asked questions
Who runs Franklin County Pwsd 3 Lake Serene?
Franklin County Pwsd 3 Lake Serene (PWSID MO6036075) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Franklin County Pwsd 3 Lake Serene serve?
Franklin County Pwsd 3 Lake Serene reports serving 600 people through 180 service connections in Franklin County, Missouri.
Where does Franklin County Pwsd 3 Lake Serene 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 Franklin County Pwsd 3 Lake Serene have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2008. 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 Franklin County Pwsd 3 Lake Serene'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, one is health-based, and the most recent began in April 2008. For current results, consult the system's annual water quality report, EPA ECHO, or the MO state drinking water program.
Where can I find Franklin County Pwsd 3 Lake Serene's water quality report?
As a community water system, Franklin County Pwsd 3 Lake Serene 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 Franklin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Washington Pws | Franklin | 14,068 | Community | Groundwater |
| Union Pws | Franklin | 12,348 | Community | Groundwater |
| Franklin County Pwsd 3 | Franklin | 8,250 | Community | Groundwater |
| Sullivan Pws | Franklin + 1 more | 7,081 | Community | Groundwater |
| Pacific Pws | Franklin + 1 more | 6,000 | Community | Groundwater |
| St Clair Pws | Franklin | 4,700 | 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, “Franklin County Pwsd 3 Lake Serene, PWSID MO6036075, Missouri”, https://aquacensus.com/water-systems/missouri/franklin-county-pwsd-3-lake-serene-mo6036075 (data as of October 1, 2026).