Reitz & Jens, Inc.
Three separate people at this firm are documented as both PE and CFM across four different government documents - municipal work orders, a watershed plan and a city report - which is the strongest credential verification found on the Missouri side of the confluence. Holds a $1 million City of St. Charles contract for the Frenchtown and Elm Point levee studies covering protection up to the 500-year event.
Who runs it
- Paul Reitz ✓ PE, CFM - President
- Eric J. Karch ✓ PE, CFM - Principal, Water Resources Lead
- Chris Kuester ✓ PE, CFM - Stormwater
Credentials & verification
- CFM (Certified Floodplain Manager)
- Three named PE + CFM staff, each verified on government documents
- Years in business
- 60+ years
Services
Service area
St. Louis City · St. Louis County · St. Charles County · Statewide Missouri · Metro East Illinois
Our verification notes
Credentials here were read off real signed documents rather than a staff page, which is why they are stated with confidence. The firm's own site was used only for contact details and never as a qualifying source. Their work is levee and floodplain scale; whether they take single-building certificate engagements should be confirmed directly.
Sources checked
- https://www.stcharlescitymo.gov/AgendaCenter/ViewFile/Agenda/_03232020-990
- https://cms2.revize.com/revize/laduemo/Agenda%20Links/CC%20Links/2025/2025.10.20/Resolutions/packet_ReitzJens_WO5_Culvert%20Repairs.pdf
- https://www.berkeleymo.us/egov/documents/1776461015_78334.pdf
- https://www3.epa.gov/epawaste/coal/pdf/ameren_sioux_draft.pdf
Last verified 2026-08-13. This is an independent listing, not an endorsement, and we are not affiliated with Reitz & Jens, Inc.. Confirm the current license, insurance and references directly before signing any contract.
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