Public water system · CO0235177
ActiveTrails End for Girls
At a glance
Trails End for Girls (PWSID CO0235177) is an active transient non-community water system in Larimer County, Colorado. It reports serving 80 people through 1 service connection. Its primary water source is groundwater under influence of surface water, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 4 are health-based, and the most recent began in June 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
80
Service connections
1
Primary source
GU
Groundwater under influence of surface water
System type
TNCWS
Transient non-community water system
System record
How does Trails End for Girls compare with other water systems in Larimer County?
By EPA's size categories, Trails End for Girls is a very small system (500 people or fewer). Larimer County has 134 active public water systems. Its population served is well below the county average of 3,842 people per system, and accounts for less than 0.1% of the 514,860 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 Trails End for Girls is about 44% below 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 under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules. 166 Colorado systems (7.5%) list groundwater under influence of surface water as their primary source.
Who owns and regulates Trails End for Girls?
EPA lists Trails End for Girls 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. 86 of the 134 active systems in Larimer County (64%) are also privately owned.
Does Trails End for Girls have drinking water violations?
EPA's records list 9 violations for this system; 4 are health-based, and the most recent began in June 2025. The violations listed here began between June 2007 and June 2025. By type: 4 required treatment not met, 3 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Surface Water Treatment Rule (3 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2025-06-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2025-06-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2025-06-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2018-09-02 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Unaddressed |
| 2018-06-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | E. colicode 3014 | No | Resolved |
| 2017-09-01 | Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2012-06-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2007-07-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2007-06-01 | Required treatment not metMonthly Turbidity Exceed (Enhanced SWTR) · code 44 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
All 9 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.
Trails End for Girls: frequently asked questions
Who runs Trails End for Girls?
Trails End for Girls (PWSID CO0235177) is a transient non-community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Trails End for Girls serve?
Trails End for Girls reports serving 80 people through 1 service connection in Larimer County, Colorado.
Where does Trails End for Girls get its water?
EPA SDWIS lists this system's primary water source as groundwater under influence of surface water. Groundwater under the influence of surface water is well or spring water that the regulator has found to be affected by nearby surface water, so it is regulated under the surface-water treatment rules.
Does Trails End for Girls have any drinking water violations?
EPA's records list 9 violations for this system; 4 are health-based, and the most recent began in June 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 Trails End for Girls' 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 9 violations for this system; 4 are health-based, and the most recent began in June 2025. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find Trails End for Girls' water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Trails End for Girls 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 Larimer County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ft Collins City of | Larimer | 179,901 | Community | Surface water |
| Loveland City of | Larimer | 91,077 | Community | Surface water |
| Ft Collins Loveland Wd | Larimer | 63,532 | Community | Purchased surface water |
| East Larimer County Wd | Larimer | 27,944 | Community | Purchased surface water |
| Csu Main and West Housing Campus | Larimer | 27,375 | Community | Purchased surface water |
| Little Thompson Wd | Larimer | 25,654 | 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, “Trails End for Girls, PWSID CO0235177, Colorado”, https://aquacensus.com/water-systems/colorado/trails-end-for-girls-co0235177 (data as of October 1, 2026).