Twin Lakes Service Area
Published drinking-water records and contacts for Twin Lakes Service Area. System ID1280099. Review sources and dates; not a real-time water assessment.
- System ID
- ID1280099
- State or territory
- ID
- Published population served
- 2023
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 10 — 1995-01-01 – 2024-12-31
- Idaho selected chemical sample panels: 5 — 2026-03-17 – 2026-03-24
Missing records here do not mean the provider did not test. Published records are not a real-time assessment of your tap water.
Published testing results
Selected recent records are shown below. Different sampling locations and dates are not interchangeable. These excerpts are not a complete testing history.
“<” means below the stated reporting limit, not zero. A reported measurement alone is not a safety verdict. Read an example
Lead and copper: 90th-percentile summaries
These describe a monitoring period across sampled locations, not the result at your home. How to read the 90th percentile
| Substance | Published 90th percentile | Monitoring period | Source quarter |
|---|---|---|---|
| Lead (PB90) | 0.001 mg/L | 2022-01-01 – 2024-12-31 | 2026Q3 |
| Lead (PB90) | 0.002 mg/L | 2021-01-01 – 2021-06-30 | 2026Q3 |
| Lead (PB90) | 0.002 mg/L | 2020-07-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0.003 mg/L | 2017-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | 0.002 mg/L | 2014-01-01 – 2016-12-31 | 2026Q3 |
| Lead (PB90) | 0.0015 mg/L | 2011-01-01 – 2013-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2008-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0.002 mg/L | 2005-01-01 – 2007-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| ARSENIC | .00591 mg/L | 2026-03-24 | WELL1 / Idaho selected chemical sample panels |
| NITRATE | .371 mg/L | 2026-03-24 | WELL1 / Idaho selected chemical sample panels |
| SODIUM | 2.84 mg/L | 2026-03-24 | WELL1 / Idaho selected chemical sample panels |
| NITRATE | .216 mg/L | 2026-03-17 | WELL3 / Idaho selected chemical sample panels |
| NITRATE | .363 mg/L | 2026-03-17 | WF1&2&3 / Idaho selected chemical sample panels |
State sampling points can include untreated water. Publisher qualifiers and units are retained; consult the full source notes before interpreting a record.
Download state records with source notes (CSV)
Published compliance history
17 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
| Rule / record | Period | Recorded status | Health-based (EPA classification) | Source quarter |
|---|---|---|---|---|
| Stage 1 Disinfectants and Disinfection Byproducts Rule / Monitoring and Reporting (DBP) | 2006-04-01 – 2006-06-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Repeat Major (TCR) | 1999-09-01 – 1999-09-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Repeat Minor (TCR) | 1999-09-01 – 1999-09-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR) | 1999-09-01 – 1999-09-30 | Archived | Yes | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1999-07-01 – 1999-07-31 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Minor (TCR) | 1995-08-01 – 1995-08-31 | Archived | No | 2026Q3 |
| Total Coliform Rule / Maximum Contaminant Level Violation, Monthly (TCR) | 1995-07-01 – 1995-07-31 | Archived | Yes | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Minor (TCR) | 1994-10-01 – 1994-10-31 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Minor (TCR) | 1993-10-01 – 1993-10-31 | Archived | No | 2026Q3 |
| Arsenic Rule / Monitoring, Regular | 1979-10-01 – 1979-10-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1979-10-01 – 1979-10-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1979-10-01 – 1979-10-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1979-10-01 – 1979-10-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1979-10-01 – 1979-10-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1979-10-01 – 1979-10-31 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1979-10-01 – 1979-10-31 | Archived | No | 2026Q3 |
| Inorganic Chemicals / Monitoring, Regular | 1979-10-01 – 1979-10-31 | Archived | No | 2026Q3 |
Source dates and refresh checks
A refresh check is not a sample date. Publication periods, sample dates and checks are shown separately.
- EPA SDWIS lead/copper summaries and service areas — source period: — – —; last checked: 2026-10-17
- EPA SDWIS contacts and compliance records — source period: — – —; last checked: 2026-10-17
- EPA UCMR 5 sample results — source period: 2023-01-03 – 2026-06-17; last checked: 2026-10-17
- Idaho selected chemical sample panels — last successful check: 2026-10-12
Administrative contact (EPA filing)
Scheidt, Suzanne: 208-687-6593
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.