Public water system · CO0137001
ActiveArriba Town of
At a glance
Town of Arriba (PWSID CO0137001) is an active community water system in Lincoln County, Colorado. It reports serving 216 people through 159 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
216
Service connections
159
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Town of Arriba compare with other water systems in Lincoln County?
By EPA's size categories, Town of Arriba is a very small system (500 people or fewer). Lincoln County has 6 active public water systems, and Town of Arriba is the 4th-largest of them by population served. Its population served is well below the county average of 1,288 people per system, and accounts for 2.8% of the 7,725 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 Town of Arriba 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,437 Colorado systems (65%) list groundwater as their primary source.
Who owns and regulates Town of Arriba?
EPA lists Town of Arriba 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. 4 of the 6 active systems in Lincoln County (67%) are also owned by a local government.
Does Town of Arriba have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2016. The violations listed here began between January 1997 and July 2016. By type: 3 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 4 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 |
|---|---|---|---|---|
| 2016-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2012-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2005-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1997-01-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 4 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.
Town of Arriba: frequently asked questions
Who runs Town of Arriba?
Town of Arriba (PWSID CO0137001) is a community water system owned by a local government. It is regulated by the CO state drinking water program.
How many people does Town of Arriba serve?
Town of Arriba reports serving 216 people through 159 service connections in Lincoln County, Colorado.
Where does Town of Arriba get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Town of Arriba have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in July 2016. 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 Town of Arriba'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 4 violations for this system; none is health-based, and the most recent began in July 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the CO state drinking water program.
Where can I find Town of Arriba's water quality report?
As a community water system, Town of Arriba 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 Lincoln County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Limon Town of | Lincoln | 5,080 | Community | Groundwater |
| Limon Correctional Facility | Lincoln | 1,289 | Community | Purchased groundwater |
| Hugo Town of | Lincoln | 885 | Community | Groundwater |
| Genoa Town of | Lincoln | 153 | Community | Groundwater under influence of surface water |
| Karval Water Users Inc. | Lincoln | 102 | 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, “Arriba Town of, PWSID CO0137001, Colorado”, https://aquacensus.com/water-systems/colorado/arriba-town-of-co0137001 (data as of October 1, 2026).