Public water system · CO0335321

Active

Grandview Cg

At a glance

Grandview Cg (PWSID CO0335321) is an active transient non-community water system in Larimer County, Colorado. It reports serving 64 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as owned by the federal government. EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in September 2019.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

Service connections

Primary source

Groundwater

System type

TNCWS

Transient non-community water system

System record

PWSIDCO0335321

System typeTransient non-community water system

Activity statusActive

Population served64

Service connections1

Primary water sourceGroundwater

Owner typeFederal government

Primacy agencyCO state drinking water program

City served—

StateColorado

ZIP—

CountyLarimer County

How does Grandview Cg compare with other water systems in Larimer County?

By EPA's size categories, Grandview Cg is a very small system (500 people or fewer). Larimer County has 134 active public water systems. Its population served is well below the county average of 3,842 people per system, and accounts for less than 0.1% of the 514,860 people reported by systems filed under the county. Across Colorado, the 2,207 active systems average 3,400 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Grandview Cg is about 56% below that figure.

What does “transient non-community water system” mean?

A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Colorado has 956 active transient non-community water systems, 43% 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 Grandview Cg?

EPA lists Grandview Cg as owned by the federal 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. 26 of the 134 active systems in Larimer County (19%) are also owned by the federal government.

Does Grandview Cg have drinking water violations?

EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in September 2019. The violations listed here began between April 1996 and September 2019. By type: 9 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 10 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
2019-09-17	Required treatment not metTreatment Technique Startup Procedures (RTCR) · code 2D	Revised Total Coliform Rulecode 8000	Yes	Resolved
2014-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
2012-08-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2012-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
2011-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitritecode 1041	No	Resolved
2010-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
2008-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitritecode 1041	No	Resolved
2000-10-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
2000-04-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
1996-04-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved

All 10 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.

Grandview Cg: frequently asked questions

Who runs Grandview Cg?

Grandview Cg (PWSID CO0335321) is a transient non-community water system owned by the federal government. It is regulated by the CO state drinking water program.

How many people does Grandview Cg serve?

Grandview Cg reports serving 64 people through 1 service connection in Larimer County, Colorado.

Where does Grandview Cg 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 Grandview Cg have any drinking water violations?

EPA's records list 10 violations for this system; 1 is health-based, and the most recent began in September 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 Grandview Cg'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 10 violations for this system; 1 is health-based, and the most recent began in September 2019. For current results, consult EPA ECHO, or the CO state drinking water program.

Where can I find Grandview Cg's water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Grandview Cg is a 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 Larimer County

Water system	County	Population served	Type	Source
Ft Collins City of	Larimer	179,901	Community	Surface water
Loveland City of	Larimer	91,077	Community	Surface water
Ft Collins Loveland Wd	Larimer	63,532	Community	Purchased surface water
East Larimer County Wd	Larimer	27,944	Community	Purchased surface water
Csu Main and West Housing Campus	Larimer	27,375	Community	Purchased surface water
Little Thompson Wd	Larimer	25,654	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, “Grandview Cg, PWSID CO0335321, Colorado”, https://aquacensus.com/water-systems/colorado/grandview-cg-co0335321 (data as of October 1, 2026).