Public water system · CO0219729
ActiveSylvan Lake State Park
At a glance
Sylvan Lake State Park (PWSID CO0219729) is an active transient non-community water system in Eagle County, Colorado. It reports serving 255 people through 18 service connections. Its primary water source is groundwater under influence of surface water, and EPA lists it as owned by a state government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
255
Service connections
18
Primary source
GU
Groundwater under influence of surface water
System type
TNCWS
Transient non-community water system
System record
How does Sylvan Lake State Park compare with other water systems in Eagle County?
By EPA's size categories, Sylvan Lake State Park is a very small system (500 people or fewer). Eagle County has 46 active public water systems. Its population served is well below the county average of 2,242 people per system, and accounts for 0.2% of the 103,152 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 Sylvan Lake State Park is about 77% above 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 Sylvan Lake State Park?
EPA lists Sylvan Lake State Park as owned by a state 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. 4 of the 46 active systems in Eagle County (8.7%) are also owned by a state government.
Does Sylvan Lake State Park have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 2026. The violations listed here began between July 2025 and March 2026. By type: 6 monitoring and reporting and 6 public notice, recordkeeping or other. The contaminant or rule involved most often is Public Notice (6 of them). EPA lists 10 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 |
|---|---|---|---|---|
| 2026-03-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Archived |
| 2026-03-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Archived |
| 2026-01-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2026-01-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2025-12-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2025-12-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2025-09-24 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2025-09-10 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2025-08-27 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2025-08-13 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2025-07-30 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2025-07-16 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
The 12 most recent 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.
Sylvan Lake State Park: frequently asked questions
Who runs Sylvan Lake State Park?
Sylvan Lake State Park (PWSID CO0219729) is a transient non-community water system owned by a state government. It is regulated by the CO state drinking water program.
How many people does Sylvan Lake State Park serve?
Sylvan Lake State Park reports serving 255 people through 18 service connections in Eagle County, Colorado.
Where does Sylvan Lake State Park 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 Sylvan Lake State Park have any drinking water violations?
Of the 12 most recent violations in EPA's records, 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 Sylvan Lake State Park'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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in March 2026. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find Sylvan Lake State Park's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Sylvan Lake State Park 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 Eagle County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Eagle River Wsd | Eagle | 51,515 | Community | Surface water |
| Gypsum Town of | Eagle | 15,272 | Community | Surface water |
| Vail Assoc Midvail Eagle | Eagle | 7,600 | Non-transient non-community | Purchased surface water |
| Eagle Town of | Eagle | 7,511 | Community | Surface water |
| Mid Valley Md | Eagle | 4,588 | Community | Groundwater |
| Basalt Town of | Eagle | 2,357 | Community | Groundwater under influence of 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, “Sylvan Lake State Park, PWSID CO0219729, Colorado”, https://aquacensus.com/water-systems/colorado/sylvan-lake-state-park-co0219729 (data as of October 1, 2026).