Public water system · MT0004423
ActiveTrestle Creek I and Ii
At a glance
Trestle Creek I and Ii (PWSID MT0004423) is an active community water system in Mineral County, Montana. It reports serving 110 people through 84 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 3 violations for this system; none is health-based, and the most recent began in November 2007.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
110
Service connections
84
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Trestle Creek I and Ii compare with other water systems in Mineral County?
By EPA's size categories, Trestle Creek I and Ii is a very small system (500 people or fewer). Mineral County has 37 active public water systems. Its population served is well below the county average of 454 people per system, and accounts for 0.7% of the 16,812 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active community water system reports serving 6,703 people, so Trestle Creek I and Ii 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. Montana has 853 active community water systems, 36% of the state's 2,378 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 1,994 Montana systems (84%) list groundwater as their primary source.
Who owns and regulates Trestle Creek I and Ii?
EPA lists Trestle Creek I and Ii as privately owned. The MT 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 37 active systems in Mineral County (70%) are also privately owned.
Does Trestle Creek I and Ii have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in November 2007. The violations listed here began between July 2006 and November 2007. By type: 3 monitoring and reporting. The contaminant or rule involved most often is Lead and Copper Rule (2 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 2007-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2007-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2006-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
All 3 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.
Trestle Creek I and Ii: frequently asked questions
Who runs Trestle Creek I and Ii?
Trestle Creek I and Ii (PWSID MT0004423) is a community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Trestle Creek I and Ii serve?
Trestle Creek I and Ii reports serving 110 people through 84 service connections in Mineral County, Montana.
Where does Trestle Creek I and Ii 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 Trestle Creek I and Ii have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in November 2007. 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 Trestle Creek I and Ii'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 3 violations for this system; none is health-based, and the most recent began in November 2007. For current results, consult the system's annual water quality report, EPA ECHO, or the MT state drinking water program.
Where can I find Trestle Creek I and Ii's water quality report?
As a community water system, Trestle Creek I and Ii 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 Mineral County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Quartz Flat Rest Stop West | Mineral | 3,301 | Transient non-community | Groundwater |
| Quartz Flat Rest Stop East | Mineral | 3,301 | Transient non-community | Groundwater |
| Dena Mora Saltese East Rest | Mineral | 3,000 | Transient non-community | Groundwater |
| Dena Mora Saltese West Rest | Mineral | 2,000 | Transient non-community | Groundwater |
| Superior Town of | Mineral | 1,100 | Community | Groundwater |
| Lincolns Silver Dollar Bar | Mineral | 520 | Transient non-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, “Trestle Creek I and Ii, PWSID MT0004423, Montana”, https://aquacensus.com/water-systems/montana/trestle-creek-i-and-ii-mt0004423 (data as of October 1, 2026).