Public water system · MO5172986
ActiveAva Head Start
At a glance
Ava Head Start (PWSID MO5172986) is an active non-transient non-community water system in Douglas County, Missouri. It reports serving 75 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
75
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Ava Head Start compare with other water systems in Douglas County?
By EPA's size categories, Ava Head Start is a very small system (500 people or fewer). Douglas County has 9 active public water systems, and Ava Head Start is the 5th-largest of them by population served. Its population served is well below the county average of 406 people per system, and accounts for 2.1% of the 3,652 people reported by systems filed under the county. Across Missouri, the 2,943 active systems average 2,049 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Ava Head Start is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Missouri has 228 active non-transient non-community water systems, 7.7% 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 Ava Head Start?
EPA lists Ava Head Start 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. 6 of the 9 active systems in Douglas County (67%) are also privately owned.
Does Ava Head Start have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in October 2025. The violations listed here began between January 2009 and October 2025. By type: 2 monitoring and reporting, 1 public notice, recordkeeping or other and 1 monitoring. The contaminants or rules involved are Public Notice, Revised Total Coliform Rule, Total coliform bacteria (TCR) and Nitrate-Nitrite. EPA lists 3 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 |
|---|---|---|---|---|
| 2025-10-01 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2024-08-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2010-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Resolved |
All 4 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.
Ava Head Start: frequently asked questions
Who runs Ava Head Start?
Ava Head Start (PWSID MO5172986) is a non-transient non-community water system privately owned. It is regulated by the MO state drinking water program.
How many people does Ava Head Start serve?
Ava Head Start reports serving 75 people through 1 service connection in Douglas County, Missouri.
Where does Ava Head Start 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 Ava Head Start have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in October 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 Ava Head Start'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 4 violations for this system; none is health-based, and the most recent began in October 2025. For current results, consult EPA ECHO, or the MO state drinking water program.
Where can I find Ava Head Start's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ava Head Start is a non-transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Douglas County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ava Pws | Douglas | 3,000 | Community | Groundwater |
| Junction Store LLC | Douglas | 150 | Transient non-community | Groundwater |
| Plainview Elem School | Douglas | 128 | Non-transient non-community | Groundwater |
| Skyline Elementary School | Douglas | 119 | Non-transient non-community | Groundwater |
| Mt Zion Bible School | Douglas | 75 | Non-transient non-community | Groundwater |
| Cactus Canyon Campground | Douglas | 50 | 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, “Ava Head Start, PWSID MO5172986, Missouri”, https://aquacensus.com/water-systems/missouri/ava-head-start-mo5172986 (data as of October 1, 2026).