Town of Dayton
Published drinking-water records and contacts for Town of Dayton. System WY5600202. Review sources and dates; not a real-time water assessment.
- System ID
- WY5600202
- State or territory
- WY
- Published population served
- 824
- System type (source code)
- CWS
Published records and dates
- Lead and copper monitoring summaries: 8 — 2003-01-01 – 2026-12-31
- Wyoming selected chemical sample panels: 15 — 2026-03-12 – 2026-03-12
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) | 0.003 mg/L | 2024-01-01 – 2026-12-31 | 2026Q3 |
| Lead (PB90) | 0.004 mg/L | 2021-01-01 – 2023-12-31 | 2026Q3 |
| Lead (PB90) | 0.002 mg/L | 2018-01-01 – 2020-12-31 | 2026Q3 |
| Lead (PB90) | 0 mg/L | 2015-01-01 – 2017-12-31 | 2026Q3 |
| Lead (PB90) | 0.004 mg/L | 2012-01-01 – 2014-12-31 | 2026Q3 |
| Lead (PB90) | 0.006 mg/L | 2009-01-01 – 2011-12-31 | 2026Q3 |
| Lead (PB90) | 0.005 mg/L | 2006-01-01 – 2008-12-31 | 2026Q3 |
| Lead (PB90) | 0.003 mg/L | 2003-01-01 – 2005-12-31 | 2026Q3 |
| Substance | Published result | Sample date | Location / source |
|---|---|---|---|
| ARSENIC | < 0.005 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| BARIUM | 0.034 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| CADMIUM | < 0.002 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| CHROMIUM | < 0.01 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| CYANIDE | < 0.01 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| FLUORIDE | 0.1 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| MERCURY | < 0.001 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| NICKEL | < 0.01 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| SELENIUM | < 0.005 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| SODIUM | 2 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| SULFATE | 5 mg/L | 2026-03-12 | SP01 / Wyoming selected chemical sample panels |
| ANTIMONY, TOTAL | < 0.005 mg/L | 2026-03-12 | SP01 / Wyoming 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
15 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 |
|---|---|---|---|---|
| Interim and Long Term 1 Enhanced Surface Water Treatment Rule / Failure Submit Filter Profile/CPE Report | 2023-07-01 – 2023-07-31 | Resolved | No | 2026Q3 |
| Interim and Long Term 1 Enhanced Surface Water Treatment Rule / Failure Submit Filter Profile/CPE Report | 2023-05-01 – 2023-05-31 | Resolved | No | 2026Q3 |
| Interim and Long Term 1 Enhanced Surface Water Treatment Rule / Failure Submit Filter Profile/CPE Report | 2023-04-01 – 2023-04-30 | Resolved | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 2006-07-01 – 2006-07-31 | Archived | No | 2026Q3 |
| Surface Water Treatment Rule / Treatment Technique (SWTR and GWR) | 1999-06-01 – 1999-06-30 | Archived | Yes | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Major (TCR) | 1998-05-01 – 1998-05-31 | Archived | No | 2026Q3 |
| Surface Water Treatment Rule / Treatment Technique (SWTR and GWR) | 1998-05-01 – 1998-05-31 | Archived | Yes | 2026Q3 |
| Surface Water Treatment Rule / Treatment Technique (SWTR and GWR) | 1997-05-01 – 1997-05-31 | Archived | Yes | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1994-04-01 – 1994-06-30 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1994-01-01 – 1994-03-31 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1993-10-01 – 1993-12-31 | Archived | No | 2026Q3 |
| Nitrate Rule / Monitoring, Regular | 1993-07-01 – 1993-09-30 | Archived | No | 2026Q3 |
| Total Coliform Rule / Monitoring, Routine Minor (TCR) | 1992-01-30 – 1992-02-29 | Archived | No | 2026Q3 |
| Radionuclides and Revised Rad Rule / Monitoring, Regular | 1976-07-01 – 1980-06-30 | Archived | No | 2026Q3 |
| Radionuclides and Revised Rad Rule / Monitoring, Regular | 1976-07-01 – 1980-06-30 | 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
- Wyoming selected chemical sample panels — last successful check: 2026-10-16
Administrative contact (EPA filing)
Gray, Corby: 307-461-7308
An administrative filing contact may not be a customer-service line. Confirm current contact details with the provider.