Public water system · MT0003744
ActivePondera Colony Water Systems
At a glance
Pondera Colony Water Systems (PWSID MT0003744) is an active community water system in Pondera County, Montana. It reports serving 112 people through 9 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
112
Service connections
9
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Pondera Colony Water Systems compare with other water systems in Pondera County?
By EPA's size categories, Pondera Colony Water Systems is a very small system (500 people or fewer). Pondera County has 12 active public water systems. Its population served is well below the county average of 389 people per system, and accounts for 2.4% of the 4,664 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 Pondera Colony Water Systems 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 Pondera Colony Water Systems?
EPA lists Pondera Colony Water Systems 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. 7 of the 12 active systems in Pondera County (58%) are also privately owned.
Does Pondera Colony Water Systems have drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2018. The violations listed here began between July 1994 and October 2018. By type: 10 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Lead and Copper Rule (4 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2018-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2018-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2014-01-01 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2011-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2001-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1999-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1998-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1997-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1997-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1995-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1994-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 11 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.
Pondera Colony Water Systems: frequently asked questions
Who runs Pondera Colony Water Systems?
Pondera Colony Water Systems (PWSID MT0003744) is a community water system privately owned. It is regulated by the MT state drinking water program.
How many people does Pondera Colony Water Systems serve?
Pondera Colony Water Systems reports serving 112 people through 9 service connections in Pondera County, Montana.
Where does Pondera Colony Water Systems 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 Pondera Colony Water Systems have any drinking water violations?
EPA's records list 11 violations for this system; none is health-based, and the most recent began in October 2018. 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 Pondera Colony Water Systems' 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 11 violations for this system; none is health-based, and the most recent began in October 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the MT state drinking water program.
Where can I find Pondera Colony Water Systems' water quality report?
As a community water system, Pondera Colony Water Systems 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 Pondera County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Conrad Water Dept | Pondera | 2,500 | Community | Surface water |
| Tiber County Water District | Pondera | 750 | Community | Surface water |
| Valier Town of | Pondera | 452 | Community | Groundwater |
| Ncmrwa Pondera Co Service Area | Pondera | 144 | Community | Purchased surface water |
| Brady County Water Sewer District | Pondera | 144 | Community | Purchased surface water |
| New Miami Colony | Pondera | 130 | 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, “Pondera Colony Water Systems, PWSID MT0003744, Montana”, https://aquacensus.com/water-systems/montana/pondera-colony-water-systems-mt0003744 (data as of October 1, 2026).