Saint Lawrence
Published drinking-water records and contacts for Saint Lawrence. System SD4600286. Review sources and dates; not a real-time water assessment.
- System ID
- SD4600286
- State or territory
- SD
- Published population served
- 198
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 18 — 1994-01-01 – 2024-12-31
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) | 0.005 mg/L | 2024-01-01 – 2024-12-31 | 2026Q3 |
| Lead (PB90) | 0.008 mg/L | 2021-01-01 – 2021-12-31 | 2026Q3 |
| Lead (PB90) | 0.008 mg/L | 2018-01-01 – 2018-12-31 | 2026Q3 |
| Lead (PB90) | 0.015 mg/L | 2015-01-01 – 2015-12-31 | 2026Q3 |
| Lead (PB90) | 0.01 mg/L | 2012-01-01 – 2012-12-31 | 2026Q3 |
| Lead (PB90) | 0.004 mg/L | 2009-01-01 – 2009-12-31 | 2026Q3 |
| Lead (PB90) | 0.004 mg/L | 2006-01-01 – 2006-12-31 | 2026Q3 |
| Lead (PB90) | 0.002 mg/L | 2003-01-01 – 2003-12-31 | 2026Q3 |
Published compliance history
42 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 |
|---|---|---|---|---|
| Total Coliform Rule / Notification, Public | 1997-09-15 – 1997-10-14 | Archived | No | 2026Q3 |
| Total Coliform Rule / Notification, Public | 1997-08-11 – 1997-09-10 | Archived | No | 2026Q3 |
| Total Coliform Rule / Notification, Public | 1997-07-15 – 1997-08-14 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1997-07-01 – 1997-07-31 | Archived | No | 2026Q3 |
| Total Coliform Rule / Notification, Public | 1997-06-21 – 1997-07-20 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1997-06-01 – 1997-06-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1997-05-01 – 1997-05-31 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Repeat Major (TCR) | 1997-04-01 – 1997-04-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Notification, Public | 1997-02-12 – 1997-03-11 | Archived | No | 2026Q3 |
| Total Coliform Rule / Notification, Public | 1997-01-20 – 1997-02-19 | Archived | No | 2026Q3 |
| Total Coliform Rule / Notification, Public | 1996-12-14 – 1997-01-13 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1996-12-01 – 1996-12-31 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1996-11-11 – 1996-12-10 | Archived | No | 2026Q3 |
| Total Coliform Rule / Notification, Public | 1996-11-11 – 1996-12-10 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1996-11-01 – 1996-11-30 | Archived | No | 2026Q3 |
| Miscellaneous Other Rules / Notification, Public | 1996-10-14 – 1996-11-13 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Repeat Major (TCR) | 1996-10-01 – 1996-10-31 | Archived | No | 2026Q3 |
| Total Coliform Rule / Notification, Public | 1996-08-17 – 1996-09-16 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Repeat Major (TCR) | 1996-08-01 – 1996-08-31 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Repeat Major (TCR) | 1996-07-01 – 1996-07-31 | 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
Administrative contact (EPA filing)
Saint Lawrence: 6058533159
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.