Public water system · CO0224170
ActiveZ-Stop
At a glance
Z-Stop (PWSID CO0224170) is an active transient non-community water system in Gilpin County, Colorado. It reports serving 500 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2006.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
500
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Z-Stop compare with other water systems in Gilpin County?
By EPA's size categories, Z-Stop is a very small system (500 people or fewer). Gilpin County has 20 active public water systems, and Z-Stop is the 4th-largest of them by population served. Its population served is about 56% below the county average of 1,125 people per system, and accounts for 2.2% of the 22,489 people reported by systems filed under the county. Across Colorado, the 2,207 active systems average 3,400 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Z-Stop is about 3.5 times that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Colorado has 956 active transient non-community water systems, 43% of the state's 2,207 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,437 Colorado systems (65%) list groundwater as their primary source.
Who owns and regulates Z-Stop?
EPA lists Z-Stop as privately owned. The CO state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 9 of the 20 active systems in Gilpin County (45%) are also privately owned.
Does Z-Stop have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2006. By type: 1 monitoring and reporting. The contaminant or rule involved is Total coliform bacteria (TCR). EPA lists 1 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2006-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
The one violation in EPA's records.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.
Z-Stop: frequently asked questions
Who runs Z-Stop?
Z-Stop (PWSID CO0224170) is a transient non-community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Z-Stop serve?
Z-Stop reports serving 500 people through 1 service connection in Gilpin County, Colorado.
Where does Z-Stop 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 Z-Stop have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2006. 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 Z-Stop'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 one violation for this system; it is not health-based, and the most recent began in October 2006. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find Z-Stop's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Z-Stop is a 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 Gilpin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Black Hawk City of | Gilpin | 15,167 | Community | Surface water |
| Central City City of | Gilpin | 3,750 | Community | Surface water |
| Gilpin County School | Gilpin | 562 | Non-transient non-community | Groundwater |
| Columbine Cg | Gilpin | 376 | Transient non-community | Groundwater |
| Cold Springs Cg | Gilpin | 304 | Transient non-community | Groundwater |
| Base Camp at Golden Gate Canyon | Gilpin | 302 | Transient non-community | Groundwater |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Z-Stop, PWSID CO0224170, Colorado”, https://aquacensus.com/water-systems/colorado/z-stop-co0224170 (data as of October 1, 2026).