Public water system record
Williamsburg 206
Serves Thiensville, Ozaukee County, WI · 48 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Williamsburg 206 in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 0
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Williamsburg 206 draws water from 1 well.
- Most recent formal enforcement: signed compliance agreement by Wisconsin, December 2009.
- Record on file since 1991, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 32 service lines.
Check whether Williamsburg 206 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.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Public Notice
OTHER
|
Oct 17, 2024 | Active |
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2017 | Resolved |
Full record since 1991
EPA's records for Williamsburg 206 go back to 1991. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 113 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 1 | 95 |
| 2000s | 2 | 15 |
| 2010 to October 18, 2016 | 0 | 3 |
| October 19, 2016 to 2019 | 0 | 1 |
| 2020s | 1 | 1 |
Most recent health-based violation before October 19, 2016: Total Coliform, began September 2005, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2005 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Sep 1, 2003 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1995 | Resolved |
Enforcement actions
Wisconsin regulators took 4 formal enforcement actions against Williamsburg 206 and issued 3 boil water orders between 1995 and 2009, filed as 29 records in EPA's data. The most recent was a signed compliance agreement in December 2009.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 15, 2009 | Wisconsin | Signed compliance agreement | 10 violations (2 health-based): Consumer Confidence Rule, Total Coliform |
| Dec 15, 2008 | Wisconsin | Signed compliance agreement | 1 violation: Total Coliform |
| Sep 22, 2005 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
| Sep 15, 2003 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
| Apr 7, 1998 | Wisconsin | Signed compliance agreement | 39 violations: Lead and Copper Rule, Gross Alpha, Excl. Radon and U, 1,2-Dichloroethane, 1,2-Dichloropropane, Trichloroethylene |
| Mar 26, 1996 | Wisconsin | Signed compliance agreement | 45 violations: Lead and Copper Rule, Total Coliform, Gross Alpha, Excl. Radon and U, Ethylbenzene, Carbon tetrachloride |
| Jul 10, 1995 | Wisconsin | Boil water order | 1 violation (1 health-based): Total Coliform |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Where the water comes from
Williamsburg 206 draws water from 1 well.
Annual water quality report
Williamsburg 206 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.
Systems serving 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Williamsburg 206 for a copy.
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 Wisconsin.
Certified drinking water labs by state EPA guidance for private wells