Public water system · MT0004040
ActiveRec Advanced Silicon Materials LLC
At a glance
Rec Advanced Silicon Materials LLC (PWSID MT0004040) is an active non-transient non-community water system in Silver Bow County, Montana. It reports serving 210 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in November 2005.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
210
Service connections
1
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Rec Advanced Silicon Materials LLC compare with other water systems in Silver Bow County?
By EPA's size categories, Rec Advanced Silicon Materials LLC is a very small system (500 people or fewer). Silver Bow County has 24 active public water systems. Its population served is well below the county average of 1,797 people per system, and accounts for 0.5% of the 43,130 people reported by systems filed under the county. Across Montana, the 2,378 active systems average 489 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Rec Advanced Silicon Materials LLC is about half of 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. Montana has 319 active non-transient non-community water systems, 13% 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 Rec Advanced Silicon Materials LLC?
EPA lists Rec Advanced Silicon Materials LLC 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. 18 of the 24 active systems in Silver Bow County (75%) are also privately owned.
Does Rec Advanced Silicon Materials LLC have drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in November 2005. The violations listed here began between December 1998 and November 2005. By type: 7 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2005-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2005-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-10-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2001-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2000-10-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1999-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1998-12-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 8 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.
Rec Advanced Silicon Materials LLC: frequently asked questions
Who runs Rec Advanced Silicon Materials LLC?
Rec Advanced Silicon Materials LLC (PWSID MT0004040) is a non-transient non-community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Rec Advanced Silicon Materials LLC serve?
Rec Advanced Silicon Materials LLC reports serving 210 people through 1 service connection in Silver Bow County, Montana.
Where does Rec Advanced Silicon Materials LLC 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 Rec Advanced Silicon Materials LLC have any drinking water violations?
EPA's records list 8 violations for this system; 1 is health-based, and the most recent began in November 2005. 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 Rec Advanced Silicon Materials LLC'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 8 violations for this system; 1 is health-based, and the most recent began in November 2005. For current results, consult EPA ECHO, or the MT state drinking water program.
Where can I find Rec Advanced Silicon Materials LLC's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Rec Advanced Silicon Materials LLC 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 Silver Bow County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Butte Silverbow Water Dept | Silver Bow | 33,000 | Community | Surface water |
| Montana Technological University | Silver Bow | 3,200 | Non-transient non-community | Purchased surface water |
| Fairmont Hot Springs Resort | Silver Bow | 1,965 | Community | Groundwater |
| Harrington Bottling Co | Silver Bow | 1,001 | Non-transient non-community | Groundwater |
| Divide Feely North Rest Stop | Silver Bow | 500 | Transient non-community | Groundwater |
| Divide Feely South Rest Stop | Silver Bow | 500 | 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, “Rec Advanced Silicon Materials LLC, PWSID MT0004040, Montana”, https://aquacensus.com/water-systems/montana/rec-advanced-silicon-materials-llc-mt0004040 (data as of October 1, 2026).