TROY, MT · Lincoln County
ANGEL ISLAND SUBDIVISION Water System
Consumer Confidence Report status
ANGEL ISLAND SUBDIVISION 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 ANGEL ISLAND SUBDIVISION.
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)
- MT0000582
- System type
- Community Water System
- Population served
- 150
- Service connections
- 184
- Ownership
- privately owned
- Water source
- groundwater (wells)
ANGEL ISLAND SUBDIVISION is one of 1,084 community water systems in Montana in the 500 or fewer people size category, serving 150 people from groundwater.
As of August 1, 2026, its federal record holds 1 entry in 1996, all of which EPA lists as closed. Nothing has been added since 1996.
All 1 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 inorganic chemicals.
Violation history
Monitoring, Regular
—Nitrate
January 1, 1996 – December 31, 1996
Resolved
Resolved addressed and confirmed by the state
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| January 1, 1996 – December 31, 1996 | Monitoring, Regular | Nitrate | — | Resolved |
Resolved addressed and confirmed by the state
Enforcement actions
- January 13, 2004State Compliance achieved1 linked violation
- July 25, 2003State Violation/Reminder Notice1 linked violation
- July 25, 2003State Public Notification requested1 linked violation
- August 29, 2002State Public Notification received1 linked violation
- July 12, 2002State Public Notification requested1 linked violation
- July 12, 2002State Violation/Reminder Notice1 linked violation
- May 19, 2001State Compliance achieved1 linked violation
Common questions
Is ANGEL ISLAND SUBDIVISION required to publish a Consumer Confidence Report?
- Yes. ANGEL ISLAND SUBDIVISION 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 ANGEL ISLAND SUBDIVISION’s next Consumer Confidence Report due?
- ANGEL ISLAND SUBDIVISION’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does ANGEL ISLAND SUBDIVISION have any open drinking water violations on record?
- As of August 1, 2026, EPA's federal records show no open violations for ANGEL ISLAND SUBDIVISION.
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
ANGEL ISLAND ASSOCIATION
406-295-5259
TROY, MT 59935