Public water system record
Washington County PWSD 1
Serves an area of Washington County, MO · 503 people served
Federal records show no health-based violations and 3 monitoring/reporting issues for Washington County PWSD 1 in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 3
Key facts
- Washington County PWSD 1 buys its water from Potosi PWS.
- Most recent formal enforcement: signed compliance agreement by Missouri, April 2010.
- Record on file since 1991, with 18 health-based violations before October 20, 2016.
- Lead pipe inventory: 0 lead and 291 unknown out of 291 service lines.
Check whether Washington County PWSD 1 serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
None since October 2016.
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2021 | Resolved |
|
Public Notice
OTHER
|
Jun 14, 2015 | Resolved |
Full record since 1991
EPA's records for Washington County PWSD 1 go back to 1991. Before October 20, 2016 they list 18 health-based violations (18 resolved) and 22 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 2 |
| 2000s | 11 | 14 |
| 2010 to October 19, 2016 | 5 | 6 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 20, 2016: Total Coliform, began April 2015, Resolved.
Show all 18 health-based violations before October 20, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2010 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2008 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2008 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2003 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2003 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2003 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2002 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2001 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1995 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 1991 | Resolved |
Enforcement actions
Missouri regulators took 2 formal enforcement actions against Washington County PWSD 1 between 2003 and 2010. The most recent was a signed compliance agreement in April 2010.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Apr 6, 2010 | Missouri | Signed compliance agreement | 14 violations (7 health-based): Public Notice, Total Coliform, Consumer Confidence Rule |
| Oct 14, 2003 | Missouri | Signed compliance agreement | 6 violations (4 health-based): Total Coliform |
Where the water comes from
Washington County PWSD 1 buys its water from Potosi PWS. It lists no wells or intakes of its own.
Buys water from
- Potosi PWS Potosi, MO
Annual water quality report
Washington County PWSD 1 must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Missouri.
Certified drinking water labs by state EPA guidance for private wells