Public water system · CO0162559
ActiveNunn Town of
At a glance
Town of Nunn (PWSID CO0162559) is an active community water system in Weld County, Colorado. It reports serving 499 people through 225 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; none is health-based, and the most recent began in October 2013.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
499
Service connections
225
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Town of Nunn compare with other water systems in Weld County?
By EPA's size categories, Town of Nunn is a very small system (500 people or fewer). Weld County has 75 active public water systems. Its population served is well below the county average of 4,824 people per system, and accounts for 0.1% of the 361,765 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 Nunn 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 Town of Nunn?
EPA lists Town of Nunn 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. 31 of the 75 active systems in Weld County (41%) are also owned by a local government.
Does Town of Nunn have drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in October 2013. The violations listed here began between July 2007 and October 2013. By type: 4 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 5 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 |
|---|---|---|---|---|
| 2013-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2007-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2007-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
All 5 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 Nunn: frequently asked questions
Who runs Town of Nunn?
Town of Nunn (PWSID CO0162559) 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 Nunn serve?
Town of Nunn reports serving 499 people through 225 service connections in Weld County, Colorado.
Where does Town of Nunn 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 Town of Nunn have any drinking water violations?
EPA's records list 5 violations for this system; none is health-based, and the most recent began in October 2013. 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 Nunn'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 5 violations for this system; none is health-based, and the most recent began in October 2013. 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 Nunn's water quality report?
As a community water system, Town of Nunn 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 Weld County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Greeley City of | Weld | 132,310 | Community | Surface water |
| Firestone Town of | Weld | 27,798 | Community | Purchased surface water |
| Johnstown Town of | Weld | 27,295 | Community | Surface water |
| Windsor Town of | Weld | 23,500 | Community | Purchased surface water |
| Evans City of | Weld | 19,369 | Community | Purchased surface water |
| Frederick Town of | Weld | 17,173 | 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, “Nunn Town of, PWSID CO0162559, Colorado”, https://aquacensus.com/water-systems/colorado/nunn-town-of-co0162559 (data as of October 1, 2026).