Public water system · CO0262171
ActiveCeesi
At a glance
Ceesi (PWSID CO0262171) is an active non-transient non-community water system in Weld County, Colorado. It reports serving 30 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in May 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
30
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Ceesi compare with other water systems in Weld County?
By EPA's size categories, Ceesi 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 less than 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 non-transient non-community water system reports serving 430 people, so Ceesi is well below that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Colorado has 183 active non-transient non-community water systems, 8.3% 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 Ceesi?
EPA lists Ceesi 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. 43 of the 75 active systems in Weld County (57%) are also privately owned.
Does Ceesi have drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in May 2019. The violations listed here began between October 2012 and May 2019. By type: 2 monitoring and reporting and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 3 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2019-05-05 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Unaddressed |
| 2014-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2013-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2012-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | 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.
Ceesi: frequently asked questions
Who runs Ceesi?
Ceesi (PWSID CO0262171) is a non-transient non-community water system privately owned. It is regulated by the CO state drinking water program.
How many people does Ceesi serve?
Ceesi reports serving 30 people through 1 service connection in Weld County, Colorado.
Where does Ceesi 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 Ceesi have any drinking water violations?
EPA's records list 4 violations for this system; 2 are health-based, and the most recent began in May 2019. 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 Ceesi'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; 2 are health-based, and the most recent began in May 2019. For current results, consult EPA ECHO, or the CO state drinking water program.
Where can I find Ceesi's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ceesi is a non-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 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, “Ceesi, PWSID CO0262171, Colorado”, https://aquacensus.com/water-systems/colorado/ceesi-co0262171 (data as of October 1, 2026).