Public water system · CO0125710
ActiveGranby Town of South Service Area
At a glance
Granby Town of South Service Area (PWSID CO0125710) is an active community water system in Grand County, Colorado. It reports serving 2,300 people through 765 service connections. Its primary water source is groundwater under influence of surface water, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; none is health-based, and the most recent began in March 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,300
Service connections
765
Primary source
GU
Groundwater under influence of surface water
System type
CWS
Community water system
System record
How does Granby Town of South Service Area compare with other water systems in Grand County?
By EPA's size categories, Granby Town of South Service Area is a small system (501 to 3,300 people). Grand County has 77 active public water systems. Its population served is about 3.2 times the county average of 728 people per system, and accounts for 4.1% of the 56,067 people reported by systems filed under the county. Across Colorado, the 2,207 active systems average 3,400 people each. Nationally, the average active community water system reports serving 6,703 people, so Granby Town of South Service Area is about 66% 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. Colorado has 1,068 active community water systems, 48% 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 Granby Town of South Service Area?
EPA lists Granby Town of South Service Area as owned by a local government. 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. 17 of the 77 active systems in Grand County (22%) are also owned by a local government.
Does Granby Town of South Service Area have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in March 2026. The violations listed here began between May 1992 and March 2026. By type: 6 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2026-03-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2018-10-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | E. colicode 3014 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2007-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2002-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1992-05-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 6 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.
Granby Town of South Service Area: frequently asked questions
Who runs Granby Town of South Service Area?
Granby Town of South Service Area (PWSID CO0125710) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does Granby Town of South Service Area serve?
Granby Town of South Service Area reports serving 2,300 people through 765 service connections in Grand County, Colorado.
Where does Granby Town of South Service Area 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 Granby Town of South Service Area have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in March 2026. 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 Granby Town of South Service Area'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 6 violations for this system; none is health-based, and the most recent began in March 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Granby Town of South Service Area's water quality report?
As a community water system, Granby Town of South Service Area 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 Grand County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Winter Park Wsd | Grand | 6,635 | Community | Surface water |
| Grand County Water No 1 | Grand | 5,400 | Community | Surface water |
| Winter Park Resort Sunspot | Grand | 5,006 | Transient non-community | Groundwater |
| Winter Park Resort Lunch Rock | Grand | 5,001 | Transient non-community | Groundwater |
| Winter Park Resort Snoasis | Grand | 5,001 | Transient non-community | Groundwater |
| Winter Park Ranch Wsd | Grand | 3,250 | 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, “Granby Town of South Service Area, PWSID CO0125710, Colorado”, https://aquacensus.com/water-systems/colorado/granby-town-of-south-service-area-co0125710 (data as of October 1, 2026).