Public water system · CO0115784
ActiveUpper Surface Creek Domestic Wua
At a glance
Upper Surface Creek Domestic Wua (PWSID CO0115784) is an active community water system in Delta County, Colorado. It reports serving 2,800 people through 971 service connections. Its primary water source is surface water, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in May 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,800
Service connections
971
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Upper Surface Creek Domestic Wua compare with other water systems in Delta County?
By EPA's size categories, Upper Surface Creek Domestic Wua is a small system (501 to 3,300 people). Delta County has 42 active public water systems, and Upper Surface Creek Domestic Wua is the 3rd-largest of them by population served. Its population served is about 4.2 times the county average of 660 people per system, and accounts for 10% of the 27,718 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 Upper Surface Creek Domestic Wua is about 58% 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 228 Colorado systems (10%) list surface water as their primary source.
Who owns and regulates Upper Surface Creek Domestic Wua?
EPA lists Upper Surface Creek Domestic Wua 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. 30 of the 42 active systems in Delta County (71%) are also privately owned.
Does Upper Surface Creek Domestic Wua have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in May 2024. The violations listed here began between November 2020 and May 2024. By type: 5 contaminant level above the legal limit, 5 monitoring and reporting, 1 required treatment not met and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Haloacetic acids (HAA5) (5 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2024-05-05 | Required treatment not metOCCT/SOWT Treatment Installation/Demonstration · code 58 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2023-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2023-06-06 | Public notice, recordkeeping or otherSample Siting Plan Errors (RTCR) · code 5A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-06-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorine dioxidecode 1008 | No | Resolved |
| 2023-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2023-01-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2023-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2022-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2022-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2021-04-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2021-04-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | No | Resolved |
| 2020-11-01 | Monitoring and reportingMonitoring of Treatment (SWTR-Filter) · code 36 | Surface Water Treatment Rulecode 0200 | 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.
Upper Surface Creek Domestic Wua: frequently asked questions
Who runs Upper Surface Creek Domestic Wua?
Upper Surface Creek Domestic Wua (PWSID CO0115784) is a community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Upper Surface Creek Domestic Wua serve?
Upper Surface Creek Domestic Wua reports serving 2,800 people through 971 service connections in Delta County, Colorado.
Where does Upper Surface Creek Domestic Wua get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Upper Surface Creek Domestic Wua have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in May 2024. 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 Upper Surface Creek Domestic Wua'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, 6 are health-based, and the most recent began in May 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Upper Surface Creek Domestic Wua's water quality report?
As a community water system, Upper Surface Creek Domestic Wua 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 Delta County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Delta City of | Delta | 8,700 | Community | Purchased surface water |
| Orchard City Town of | Delta | 3,100 | Community | Groundwater under influence of surface water |
| Paonia Town of | Delta | 2,499 | Community | Groundwater under influence of surface water |
| Cedaredge Town of | Delta | 2,400 | Community | Surface water |
| Hotchkiss Town of | Delta | 2,050 | Community | Surface water |
| Rogers Mesa Wc | Delta | 840 | 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, “Upper Surface Creek Domestic Wua, PWSID CO0115784, Colorado”, https://aquacensus.com/water-systems/colorado/upper-surface-creek-domestic-wua-co0115784 (data as of October 1, 2026).