Location and Projects
Address
P. O. Box 632, Union, MO, 63084
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Septic Services Stl. LLC William Mannecke
Septic Services Stl. LLC William Mannecke, Union, Po Box 632, Union, MO (Owned by: David C. Flagg) holds a Drainlayer license and 9 other licenses according to the St Louis County license board.
Their BuildZoom score of 107 ranks in the top 6% of 23,328 Missouri licensed contractors.
Their license was verified as active when we last checked. If you are thinking of hiring Septic Services Stl. LLC William Mannecke, we recommend double-checking their license status with the license board and using our project planner to get competitive quotes.
Septic Services Stl. LLC William Mannecke Contact Information
Phone Number: (314) 603-5222
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Address: P. O. Box 632, Union, MO 63084
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Septic Services Stl. LLC William Mannecke Union
Quality
107
94th percentile
Pro tip:
We generally recommend hiring a contractor with a score higher than 95.
Septic Services Stl. LLC William Mannecke has a BuildZoom score of 107, which places them above 94% of 23,328 contractors in Missouri.
Activity
|
15 projects
|
2025 |
|
24 projects
|
2024 |
|
19 projects
|
2023 |
Our building permit records indicate that Septic Services Stl. LLC William Mannecke has worked on at least
58.0 projects over the past 3 years.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
This is an overview of this contractor's activity. Click here to access our complete licensing and building permit database.
Experience
|
7 projects
|
New Constructions |
Analyzing permits over the last 4 years shows that Septic Services Stl. LLC William Mannecke mostly works on
new construction
projects.
Pricing
|
11 projects
|
$5k-$20k |
|
47 projects
|
$20k-$50k |
The typical size of their permits is approximately $26,000. This graph shows the distribution of these job values.
Pro tip:
For more details about their pricing, check out their recent activity to see how much they have charged for different types of work.
Building Permits by Septic Services Stl. LLC William Mannecke
This is a sample of this contractor's permits. Click here to access their complete permit history.
Pump and crush the existing aeration tank. tie into the existing inlet and install to 1 200-gallon class one tank (750 gpd) tying into the existing lift station. tank replacement only no field modification
Valuation:
$8,000
Permit #:
25DRN-00720
Status:
complete
Fee:
$79
Permit Type:
Repair
Building Type:
N/A
Attn: jim showmaker: the system could not find the address by searching on the address i looked up the locator for 635 madison valley (19y340032) and used it the address came up as 635 old slave rd. also i don't have the building permit number but jim and i emailed about this today and jim told me i could submit the septic for the builder f.h. terbrock and sons inc. installation of ne... see more
Valuation:
$35,000
Permit #:
24DRN-02552
Status:
issued
Fee:
$274
Permit Type:
New construction
Building Type:
N/A
The septic review under the building permit 25bld-02557 has not been approved yet and we are submitting the plans/docs under this permit. we will install a new septic system per approved plans and specs
Valuation:
$26,000
Permit #:
25DRN-01108
Status:
issued
Fee:
$274
Permit Type:
New construction
Building Type:
N/A
****unable to process – please resubmit* we are unable to process your permit for the following reason(s): a septic bypass does not require plan review; however before resubmitting a no plan review drain laying permit an inside plumbing investigation must be done. please have the homeowner contact jim showmaker at 314-615-0330 to set up the plumbing investigation. please click on the ... see more
Valuation:
$35,000
Permit #:
24DRN-00515
Status:
canceled
Fee:
N/A
Permit Type:
Alteration
Building Type:
N/A
Pump and crush the existing tanks. tie into the existing inlet and install a 1 200-gallon class one tank (500 gpd). install outlet to a 1 000-gallon lift station with pump floats and a high-water alarm. tying into the existing pressure line and drain field
Valuation:
$8,000
Permit #:
24DRN-01913
Status:
complete
Fee:
$79
Permit Type:
Repair
Building Type:
N/A
***septic bypass inside investigation approved 12/22/2022 **we will be bypassing the old septic system and tank running approx. 300 of 6 pvc and connecting to msd sewer lateral extension stub left in front yard from when new sewers were installed. msd project #22otcpt-00641 sewer connection. per terri stewart at msd (314)768-6288
Valuation:
$25,000
Permit #:
23DRN-00013
Status:
complete
Fee:
$236
Permit Type:
Replacement
Building Type:
N/A
Pump and crush the existing tank. set new 1 200-gallon class one tank (500 gpd) tying into the existing inlet and outlet. tank only repair
Valuation:
$8,000
Permit #:
25DRN-00191
Status:
complete
Fee:
$79
Permit Type:
Repair
Building Type:
N/A
Tank replacement only- pump and crush the existing tank. tie into the existing inlet and install a 1 200-gallon class one tank (500 gpd). tying into the existing outlet and drain field
Valuation:
$8,000
Permit #:
25DRN-01608
Status:
issued
Fee:
$79
Permit Type:
Repair
Building Type:
N/A
Original permit was 24drn-00897 owner decided to move field and change field type. this is the re-submittal of these changes. submitted per direction of jim showmaker. please advise if i should cancel old permit
Valuation:
$35,000
Permit #:
24DRN-01958
Status:
complete
Fee:
$321
Permit Type:
Replacement
Building Type:
N/A
Pump and crush the existing septic tank. tie into the existing 4 house outlet and install new grinder basin with pump floats and high water alarm. install new 2 hdpe low pressure sewer force main from the basin 450 and connect to the existing msd force main junction box 19t1-0034s msd permit application # 23msd-00062 connection permit 23conct-00185 per attached plans and specs
Valuation:
$35,000
Permit #:
23DRN-01501
Status:
complete
Fee:
$298
Permit Type:
Replacement
Building Type:
N/A
**please notify beth or kim to process this permit plans have been approved by jim showmaker and are on file at clayton permit office. we will be installing a new septic system per approved plans
Valuation:
$25,000
Permit #:
23DRN-00841
Status:
complete
Fee:
$274
Permit Type:
New construction
Building Type:
N/A
**please notify beth or kim to process this permit plans have been approved by jim showmaker and are on file at clayton permit office. we will be installing a new septic system per approved plans
Valuation:
$30,000
Permit #:
23DRN-00403
Status:
complete
Fee:
$274
Permit Type:
Replacement
Building Type:
N/A
Septi by-pass to msd sanitary sewer. installing pump station and 202 of hdpe forcemain into msd manhole per msd approved plans 23msd-00466 and msd permits: 24conct-00112 and 24modst-00077
Valuation:
$35,000
Permit #:
24DRN-00592
Status:
complete
Fee:
$168
Permit Type:
Alteration
Building Type:
N/A
Pump & crush the existing tank and lift station. tie into the existing inlet and install a 1200 gallon class one tank (500gpd). install outlet to new 1000 gallon lift station with pump floats and high water alarm. tying into the existing drain field. not replacing field
Valuation:
$8,000
Permit #:
23DRN-02281
Status:
complete
Fee:
$126
Permit Type:
Replacement
Building Type:
N/A
Septic tank replacement only: pump and crush the existing tank. install a new 1 200-gallon class one tank (500 gpd) tying into the existing inlet and outlet
Valuation:
$8,000
Permit #:
25DRN-01946
Status:
issued
Fee:
$79
Permit Type:
Repair
Building Type:
N/A
Pump and crush the existing septic tank. install 1 200-gallon class one tank (500 gpd). tying into the existing inlet and outlet
Valuation:
$8,000
Permit #:
24DRN-02421
Status:
issued
Fee:
$79
Permit Type:
Repair
Building Type:
N/A
Plans and plumbing modifications were approved on this project under 21drn-00027 per jim showmaker they are paper only and not on digital. i will pick them up at clayton
Valuation:
$25,000
Permit #:
24DRN-00680
Status:
complete
Fee:
$274
Permit Type:
Replacement
Building Type:
N/A
Pump and crush the existing septic tank. install a new 1200 gallon class one septic tank. tying into the existing inlet and outlet. ****this is just a tank replacement. ****
Valuation:
$6,000
Permit #:
23DRN-00999
Status:
complete
Fee:
$274
Permit Type:
Replacement
Building Type:
N/A
Bypass existing septic system install 6 pvc from house sanitary outlet to msd 8 sewer connect to msd 8 sanitary sewer main in front yard of residence with 8x6 saddle. msd connection permit# 23otcpt-00610
Valuation:
$25,000
Permit #:
23DRN-02723
Status:
complete
Fee:
$239
Permit Type:
Replacement
Building Type:
N/A
*****please notify beth or kim to process this permit plans have been approved by jim showmaker and are on file at clayton permit office. we will be installing a new septic system per approved plans
Valuation:
$25,000
Permit #:
22DRN-01136
Status:
complete
Fee:
$274
Permit Type:
Replacement
Building Type:
N/A
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Septic Services Stl. LLC William Mannecke Reviews
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Verified License
BuildZoom confirmed this contractor's license
Septic Services Stl. LLC William Mannecke License info
Verified License
| License # | D6293 |
| Status | Active |
| County | St Louis County |
| Type | Drainlayer |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Septic Services Stl. LLC William Mannecke at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | D10370 |
| Status | Active |
| County | St Louis County |
| Type | Drainlayer |
- BuildZoom verified this license was active as of June 2026.
Verify this license's status for Septic Services Stl. LLC William Mannecke at the Saint Louis County Department of Public Works.
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| City | Dardenne Prairie |
- When BuildZoom last verified this license, it had an expiration date of December, 2024. Check the current license status of Septic Services Stl. LLC William Mannecke with the City of Dardenne Prairie
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| County | St Louis County |
| Type | Drainlayer |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Septic Services Stl. LLC William Mannecke with the Saint Louis County Department of Public Works
This is a sample of licensing data; click here to access a complete history.
License Not Verified
| Status | Active |
| City | Dardenne Prairie |
- When BuildZoom last verified this license, it had an expiration date of December, 2020. Check the current license status of Septic Services Stl. LLC William Mannecke with the City of Dardenne Prairie
This is a sample of licensing data; click here to access a complete history.
Verified License
| License # | 30097 |
| Status | Active |
| County | Jefferson County |
| Type | Drainlayer |
- BuildZoom has not verified this license since June, 2013.
Verify this license's status for Septic Services Stl. LLC William Mannecke at the Jefferson County Building Division.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | St. Charles County |
| Type | On Site Wastewater Treatment System Installer |
- According to the St. Charles County Department of Development & Business Services, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | St. Charles County |
| Type | On Site Wastewater Treatment System Installer |
- According to the St. Charles County Department of Development & Business Services, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| Status | Inactive |
| County | St. Charles County |
| Type | On Site Sewage Disposal Contractor |
- According to the St. Charles County Department of Development & Business Services, 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.
This is a sample of licensing data; click here to access a complete history.
Inactive License
| License # | 30097-ADVANCED |
| Status | Inactive |
| County | Jefferson County |
| Type | Drainlayer Contractor |
- According to the Jefferson County Building Division, 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 Septic Services Stl. LLC William Mannecke at the Jefferson County Building Division.
This is a sample of licensing data; click here to access a complete history.
107
BuildZoom Score
260
Permits
- Building permit records show that Septic Services Stl. LLC William Mannecke has worked on 260 permitted projects.
Septic Services Stl. LLC William Mannecke Employees
DF
David C Flagg
DJ
David C Flagg Jr
DF
David C. Flagg
Owner
DF
David Flagg
WM
William A Mannecke
WJ
William A Mannecke Jr