BILLINGS, MT · Yellowstone County
OAK RIDGE ESTATES Water System
Consumer Confidence Report status
OAK RIDGE ESTATES must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.
As of August 1, 2026, EPA's federal records show no open violations for OAK RIDGE ESTATES.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Montana’s official records. Always confirm current status with Montana before making decisions based on this information.
System facts
- System ID (PWSID)
- MT0004250
- System type
- Community Water System
- Population served
- 200
- Service connections
- 81
- Ownership
- privately owned
- Water source
- groundwater (wells)
OAK RIDGE ESTATES is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 200 people from groundwater.
As of August 1, 2026, its federal record holds 2 entries in 2006, all of which EPA lists as closed. Nothing has been added since 2006.
All 2 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves volatile organic chemicals.
Violation history
Monitoring, Regular
—p-Dichlorobenzene
January 1, 2006 – December 31, 2006
ResolvedMonitoring, Regular
—Tetrachloroethylene
January 1, 2006 – December 31, 2006
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 2006 – December 31, 2006 | Monitoring, Regular | p-Dichlorobenzene | — | Resolved |
| January 1, 2006 – December 31, 2006 | Monitoring, Regular | Tetrachloroethylene | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- July 11, 2023State Violation/Reminder Notice9 linked violations
- November 22, 2010Federal Compliance achieved33 linked violations
Common questions
Is OAK RIDGE ESTATES required to publish a Consumer Confidence Report?
- Yes. OAK RIDGE ESTATES is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is OAK RIDGE ESTATES’s next Consumer Confidence Report due?
- OAK RIDGE ESTATES’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does OAK RIDGE ESTATES have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for OAK RIDGE ESTATES.
What is a Consumer Confidence Report?
- A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.
Contact
STONE, SPENCER M
406-652-5523
BILLINGS, MT 59101