Public water system · CO0149160
ActiveButtermilk Md
At a glance
Buttermilk Md (PWSID CO0149160) is an active community water system in Pitkin County, Colorado. It reports serving 200 people through 64 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
200
Service connections
64
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Buttermilk Md compare with other water systems in Pitkin County?
By EPA's size categories, Buttermilk Md is a very small system (500 people or fewer). Pitkin County has 49 active public water systems. Its population served is well below the county average of 1,085 people per system, and accounts for 0.4% of the 53,175 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 Buttermilk Md is well 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 337 Colorado systems (15%) list purchased surface water as their primary source.
Who owns and regulates Buttermilk Md?
EPA lists Buttermilk Md 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. 9 of the 49 active systems in Pitkin County (18%) are also owned by a local government.
Does Buttermilk Md have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in January 2026. The violations listed here began between July 2024 and January 2026. By type: 7 public notice, recordkeeping or other and 5 monitoring and reporting. The contaminant or rule involved most often is Public Notice (6 of them). EPA lists 7 as addressed, 3 as resolved and 2 as archived. Addressed means the violation is not resolved or archived and is covered by formal enforcement. 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 |
|---|---|---|---|---|
| 2026-01-03 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Addressed |
| 2025-10-05 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Addressed |
| 2025-07-05 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Addressed |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2025-04-05 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Addressed |
| 2025-01-05 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Addressed |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Archived |
| 2025-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Addressed |
| 2025-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Archived |
| 2024-10-05 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Addressed |
| 2024-07-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | 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.
Buttermilk Md: frequently asked questions
Who runs Buttermilk Md?
Buttermilk Md (PWSID CO0149160) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does Buttermilk Md serve?
Buttermilk Md reports serving 200 people through 64 service connections in Pitkin County, Colorado.
Where does Buttermilk Md get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Buttermilk Md 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 January 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 Buttermilk Md'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 January 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 Buttermilk Md's water quality report?
As a community water system, Buttermilk Md 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 Pitkin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Aspen City of | Pitkin | 31,100 | Community | Surface water |
| Snowmass Village Wsd | Pitkin | 6,353 | Community | Surface water |
| Aspen Ski Corp Hi Alpine L9 | Pitkin | 2,900 | Transient non-community | Surface water |
| Aspen Ski Corp Garrett Gulch | Pitkin | 2,630 | Transient non-community | Surface water |
| Aspen Ski Co Sundeck | Pitkin | 1,801 | Transient non-community | Groundwater under influence of surface water |
| Aspen Ski Corp Elk Camp | Pitkin | 1,380 | Transient non-community | 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, “Buttermilk Md, PWSID CO0149160, Colorado”, https://aquacensus.com/water-systems/colorado/buttermilk-md-co0149160 (data as of October 1, 2026).