Public water system · IA0477040
ActiveMystic Water Supply
At a glance
Mystic Water Supply (PWSID IA0477040) is an active community water system in Appanoose County, Iowa. It reports serving 322 people through 148 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 8 violations for this system; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
322
Service connections
148
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Mystic Water Supply compare with other water systems in Appanoose County?
By EPA's size categories, Mystic Water Supply is a very small system (500 people or fewer). Appanoose County has 5 active public water systems, and Mystic Water Supply is the 4th-largest of them by population served. Its population served is well below the county average of 1,440 people per system, and accounts for 4.5% of the 7,200 people reported by systems filed under the county. Across Iowa, the 1,828 active systems average 1,718 people each. Nationally, the average active community water system reports serving 6,703 people, so Mystic Water Supply 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. Iowa has 1,084 active community water systems, 59% of the state's 1,828 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 119 Iowa systems (6.5%) list purchased surface water as their primary source.
Who owns and regulates Mystic Water Supply?
EPA lists Mystic Water Supply as owned by a local government. The IA state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 5 of the 5 active systems in Appanoose County (100%) are also owned by a local government.
Does Mystic Water Supply have drinking water violations?
EPA's records list 8 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between June 2009 and July 2025. By type: 4 monitoring and reporting, 3 public notice, recordkeeping or other and 1 monitoring. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2025-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2025-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2020-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2014-12-22 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2014-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2011-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2011-06-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2009-06-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
All 8 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.
Mystic Water Supply: frequently asked questions
Who runs Mystic Water Supply?
Mystic Water Supply (PWSID IA0477040) is a community water system owned by a local government. It is regulated by the IA state drinking water program.
How many people does Mystic Water Supply serve?
Mystic Water Supply reports serving 322 people through 148 service connections in Appanoose County, Iowa.
Where does Mystic Water Supply get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Mystic Water Supply have any drinking water violations?
EPA's records list 8 violations for this system; 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 Mystic Water Supply'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 8 violations for this system; 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 IA state drinking water program.
Where can I find Mystic Water Supply's water quality report?
As a community water system, Mystic Water Supply 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 Appanoose County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Centerville Municipal Waterworks | Appanoose | 5,344 | Community | Purchased surface water |
| Moravia Public Water Supply | Appanoose | 637 | Community | Purchased surface water |
| Moulton Water Department | Appanoose | 607 | Community | Purchased surface water |
| Cincinnati Municipal Water Co | Appanoose | 290 | Community | Purchased surface water |
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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, “Mystic Water Supply, PWSID IA0477040, Iowa”, https://aquacensus.com/water-systems/iowa/mystic-water-supply-ia0477040 (data as of October 1, 2026).