Public water system · MO4020601
ActivePilot Knob Rural Wd 1 N & S
At a glance
Pilot Knob Rural Wd 1 N & S (PWSID MO4020601) is an active community water system in Iron County, Missouri. It reports serving 839 people through 254 service connections. Its primary water source is purchased 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 July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
839
Service connections
254
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Pilot Knob Rural Wd 1 N & S compare with other water systems in Iron County?
By EPA's size categories, Pilot Knob Rural Wd 1 N & S is a small system (501 to 3,300 people). Iron County has 23 active public water systems, and Pilot Knob Rural Wd 1 N & S is the 2nd-largest of them by population served. Its population served is about 195% above the county average of 285 people per system, and accounts for 13% of the 6,544 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 Pilot Knob Rural Wd 1 N & S 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 177 Missouri systems (6%) list purchased groundwater as their primary source.
Who owns and regulates Pilot Knob Rural Wd 1 N & S?
EPA lists Pilot Knob Rural Wd 1 N & S 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. 6 of the 23 active systems in Iron County (26%) are also owned by a local government.
Does Pilot Knob Rural Wd 1 N & S have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2025. The violations listed here began between July 2003 and July 2025. By type: 5 monitoring and reporting, 3 public notice, recordkeeping or other, 2 monitoring, 1 reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (6 of them). EPA lists 11 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2016-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2016-07-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-06-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2014-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2013-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2013-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-11-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | 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.
Pilot Knob Rural Wd 1 N & S: frequently asked questions
Who runs Pilot Knob Rural Wd 1 N & S?
Pilot Knob Rural Wd 1 N & S (PWSID MO4020601) is a community water system owned by a local government. It is regulated by the MO state drinking water program.
How many people does Pilot Knob Rural Wd 1 N & S serve?
Pilot Knob Rural Wd 1 N & S reports serving 839 people through 254 service connections in Iron County, Missouri.
Where does Pilot Knob Rural Wd 1 N & S 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 Pilot Knob Rural Wd 1 N & S 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 July 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 Pilot Knob Rural Wd 1 N & 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 July 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 Pilot Knob Rural Wd 1 N & S' water quality report?
As a community water system, Pilot Knob Rural Wd 1 N & S 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 Iron County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mo American Ironton | Iron | 1,460 | Community | Surface water |
| Pilot Knob Pws | Iron | 746 | Community | Groundwater |
| Viburnum Pws | Iron | 639 | Community | Groundwater |
| Arcadia Pws | Iron | 607 | Community | Groundwater |
| Doe Run Company Buick Smelter | Iron | 311 | Non-transient non-community | Groundwater |
| Annapolis Pws | Iron | 300 | 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, “Pilot Knob Rural Wd 1 N & S, PWSID MO4020601, Missouri”, https://aquacensus.com/water-systems/missouri/pilot-knob-rural-wd-1-n-s-mo4020601 (data as of October 1, 2026).