Updated: Feb 27, 2026
Location
Address
2109 DOWNING AVE
, Waterloo, IA, 50701
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Williams Plumbing LLC
Williams Plumbing LLC at 2109 DOWNING AVE , Waterloo, IA 50701, held a Plumber license (#51791) with the Iowa contractors license board with an expiration date of 06-30-2017. We last verified the license was expired on 10-05-2022.
Their BuildZoom score is 0 because we haven’t been able to verify an active license. As a result, they’re not ranked in the top 50% of 39,764 Iowa contractors.
If you’re thinking about hiring them, we recommend double-checking their license status with your local licensing authority. Alternatively, use our bidding system to be easily matched to qualified, licensed professionals in your area.
Williams Plumbing LLC Services
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Williams Plumbing LLC Contact Information
Phone Number: (319) 404-1447
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Address: 2109 DOWNING AVE
, Waterloo, IA 50701
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Williams Plumbing LLC License info
Inactive License
| License # | 51791 |
| Status | Inactive |
| State | Iowa |
| Type | Plumbing And Mechanical |
| Business Type | Other |
- According to the Iowa Department of Public Health, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Williams Plumbing LLC at the Iowa Department of Public Health.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | C124077 |
| Status | Inactive |
| State | Iowa |
| Type | Contractor |
| Business Type | Other |
- According to the Iowa Workforce Development Agency, the status of this license was at one point cancelled. However, this information may have changed. If this is your business, please update your license status.
Check this license's status for Williams Plumbing LLC at the Iowa Workforce Development Agency.
This is a sample of licensing data; click here to access a complete history.
ALERT*
BuildZoom Score
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- *No active license on file. If you are Williams Plumbing LLC, click “This is My Business” to update your information.
Williams Plumbing LLC Employees
DW
Derek P Williams
Owner
DW
Derek Williams
Master Of Record