Twin Island Estates
Published drinking-water records and contacts for Twin Island Estates. System MO5036186. Review sources and dates; not a real-time water assessment.
- System ID
- MO5036186
- State or territory
- MO
- Published population served
- 525
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 11 — 1993-07-01 – 2025-12-31
- Missouri DNR PFAS samples — non-UCMR classes: 50 — 2024-03-06 – 2024-03-06
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) | 0.00458 mg/L | 2023-01-01 – 2025-12-31 | 2026Q3 |
| Lead (PB90) | 0.00197 mg/L | 2020-01-01 – 2022-12-31 | 2026Q3 |
| Lead (PB90) | 0.00197 mg/L | 2020-01-01 – 2022-12-31 | 2026Q3 |
| Lead (PB90) | 0.0069 mg/L | 2017-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | 0.00534 mg/L | 2011-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | 0.0069 mg/L | 2017-01-01 – 2019-12-31 | 2026Q3 |
| Lead (PB90) | 0.00532 mg/L | 2002-01-01 – 2010-12-31 | 2026Q3 |
| Lead (PB90) | 0.00596 mg/L | 2004-01-01 – 2004-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| PERFLUORODECANE SULFONIC ACID 8:2 FTS | < 2 NG/L | 2024-03-06 | TREATMENT WELL #3 / Missouri DNR PFAS samples — non-UCMR classes |
| 11CL-PF3OUDS | < 2 NG/L | 2024-03-06 | TREATMENT WELL #3 / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUORO PFEESA | < 1.8 NG/L | 2024-03-06 | TREATMENT WELL #4 / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUOROCTANOIC ACID (PFOA) | < 1.8 NG/L | 2024-03-06 | TREATMENT WELL #4 / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUOROHEXANE SULFONIC ACID 4:2 FTS | < 1.8 NG/L | 2024-03-06 | TREATMENT WELL #4 / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUORODODECANOIC ACID (PFDOA) | < 1.8 NG/L | 2024-03-06 | TREATMENT WELL #4 / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUORODODECANOIC ACID (PFDOA) | < 2 NG/L | 2024-03-06 | TREATMENT WELL #3 / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUORONONANOIC ACID (PFNA) | < 1.8 NG/L | 2024-03-06 | TREATMENT WELL #4 / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUORO PFMBA | < 1.8 NG/L | 2024-03-06 | TREATMENT WELL #4 / Missouri DNR PFAS samples — non-UCMR classes |
| 9CL-PF3ONS | < 1.8 NG/L | 2024-03-06 | TREATMENT WELL #4 / Missouri DNR PFAS samples — non-UCMR classes |
| ADONA | < 2 NG/L | 2024-03-06 | TREATMENT WELL #3 / Missouri DNR PFAS samples — non-UCMR classes |
| PERFLUOROBUTANOIC ACID (PFBA) | < 2 NG/L | 2024-03-06 | TREATMENT WELL #3 / Missouri DNR PFAS samples — non-UCMR classes |
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
0 imported records. Status is as recorded in the source; historical records are not current advisories. Missing records do not establish that no violations occurred.
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
- Missouri DNR PFAS samples — non-UCMR classes — last successful check: 2026-10-15
Administrative contact (EPA filing)
Goodson, Doug: 319-350-0045
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.