Public water system · IL1270100
ActiveJoppa
At a glance
Joppa (PWSID IL1270100) is an active community water system in Massac County, Illinois. It reports serving 445 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, none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
445
Service connections
180
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Joppa compare with other water systems in Massac County?
By EPA's size categories, Joppa is a very small system (500 people or fewer). Massac County has 5 active public water systems, and Joppa is the 5th-largest of them by population served. Its population served is well below the county average of 2,849 people per system, and accounts for 3.1% of the 14,244 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active community water system reports serving 6,703 people, so Joppa 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. Illinois has 1,773 active community water systems, 46% of the state's 3,872 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,808 Illinois systems (73%) list groundwater as their primary source.
Who owns and regulates Joppa?
EPA lists Joppa as owned by a local government. The IL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 4 of the 5 active systems in Massac County (80%) are also owned by a local government.
Does Joppa have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2025. The violations listed here began between June 1977 and July 2025. By type: 10 monitoring and reporting, 1 reporting and 1 public notice, recordkeeping or other. The contaminants or rules involved are Lead and Copper Rule Revisions, Consumer Confidence Rule, Combined Radium (-226 and -228) and Chromium. EPA lists 10 as archived and 2 as unaddressed. 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. 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 |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2023-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Archived |
| 1986-09-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Chromiumcode 1020 | No | Archived |
| 1986-09-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Fluoridecode 1025 | No | Archived |
| 1986-09-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Mercurycode 1035 | No | Archived |
| 1986-09-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Seleniumcode 1045 | No | Archived |
| 1986-09-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Cadmiumcode 1015 | No | Archived |
| 1986-09-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Arseniccode 1005 | No | Archived |
| 1986-09-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Nitratecode 1040 | No | Archived |
| 1986-09-01 | Monitoring and reportingMonitoring, Check/Repeat/Confirmation · code 04 | Bariumcode 1010 | No | Archived |
| 1977-06-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
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.
Joppa: frequently asked questions
Who runs Joppa?
Joppa (PWSID IL1270100) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Joppa serve?
Joppa reports serving 445 people through 180 service connections in Massac County, Illinois.
Where does Joppa 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 Joppa have any drinking water violations?
Of the 12 most recent violations in EPA's records, none 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 Joppa'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, none 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 IL state drinking water program.
Where can I find Joppa's water quality report?
As a community water system, Joppa 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 Massac County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Metropolis | Massac | 6,309 | Community | Groundwater |
| Fort Massac PWD | Massac | 6,290 | Community | Purchased groundwater |
| Brookport | Massac | 730 | Community | Groundwater |
| Solstice Advanced Materials Us, Inc. | Massac | 470 | Non-transient non-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, “Joppa, PWSID IL1270100, Illinois”, https://aquacensus.com/water-systems/illinois/joppa-il1270100 (data as of October 1, 2026).