50 Years of Engineering and Consulting
Service Excellence

Huntingburg Breaks Ground on WWTP & Interceptor Project
On July 16, the City of Huntingburg broke ground on a significant infrastructure project to replace the current Wastewater Treatment Plant with a new Sequential Batch Reactor (SBR), as well… Read More
Commonwealth Engineers, Inc. Announces New Senior Project Manager and Opening of New Office Location
Commonwealth Engineers, Inc. is excited to announce the hiring of John Wetzel, PE who will lead our new office in Huntingburg, Indiana.
July 12 Deadline to Apply for the 3M and DuPont PFAS Settlement
Public Water Systems may be eligible for compensation from a recent $14.75 Billion PFAS settlement involving industry giants 3M and DuPont.
Sanitary Sewer Collection System Modeling
Hydraulic modeling is an important process used by Commonwealth Engineers to assist communities with the management of their sewer utilities.
Infrastructure Investment to Address PFAS in Water Systems
Addressing PFAS contamination may require significant investment in your water utility infrastructure, depending on source water quality. This investment is crucial, and government funding and community initiatives all play a… Read More
PFAS Challenges and Solutions for Water Utilities
PFAS present unique challenges for water utilities tasked with ensuring safe drinking water as they are hard to detect and hard to remove.
How Forever Chemicals Enter Water Systems
When human-made PFAS enter water systems they become a major concern for the environment and public health as they are hard to break down.
Commonwealth Announces New Human Resources Director
Commonwealth Engineers, Inc. is proud to announce Natalie Anderson, PHR, SHRM-CP as the new Human Resources Director serving out of the Indianapolis Headquarters.
Final PFAS National Primary Drinking Water Regulation
The Environmental Protection Agency (EPA) announced in April 2023 the final National Primary Drinking Water Regulation (NPDWR) for six PFAS.
Years Experience
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focus on water resources
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acceptance of planning documents, plans, and specs for permitting & funding

Water Resource Engineering & Consulting Services

Since 1974, Commonwealth Engineers has been the consultant of choice by a broad cross-section of clientele, including cities, towns, municipalities, private sector and commercial clients. Our core team of engineers, scientists, regulators, and designers are specialized to solve your most pressing matters related to wastewater, potable water, stormwater, sustainable infrastructure, dams, levees, waterways, site civil, and energy-saving systems.



No matter your need, you can count on project support from our staff from start to finish, and even beyond! Every project is assigned a Project Manager, Funding Specialist, Regulatory Specialist, Project Engineer, and Designer…all accompanied by our business development staff keeping you connected to the right person, at the right time, every step of the way.

We are here to help, contact us today! 



We’re invested in the communities in which we live and work. Like you, we want our families to live in a sustainable, healthy environment with a state-of-the-art infrastructure that is affordable and supportive of job growth for generations to come.

Inflow and Infiltration Project – Spencer, Indiana

The Spencer Inflow and Infiltration project rehabilitated select sections of the Town’s gravity sewer collection mains, ranging in size from 8 to 15 inches in diameter. The work includes cleaning… Read More

Potable Water
Water Utility Improvements Project – Maysville RWSD
Water Utility Improvements Project – Maysville Regional Water & Sewer District Division A – Water Main Extension The project includes but is not limited to a water main extension including… Read More
Potable Water
Water Utility Improvements Project – Gaston, Indiana
The project includes but is not limited to the replacement of selection sections of the Town’s water mains with a new 6-inch diameter water main. The work included the replacement… Read More
Wastewater Treatment Plant Rehabilitation Owensboro, Kentucky
Project Highlights Upgrade oxidation ditches to BNR process with turbo blowers Rehabilitation of structures & process equipment, including concrete tanks, clarifier equipment, pumps, the UV system, and the PAA system… Read More
Wastewater Treatment Plant Improvements – Greenfield, Indiana
Project Need Originally constructed in the 1960s, updated and expanded through the 2000s Includes one (1) main activated sludge wastewater treatment facility and two (2) trains of Actiflo high-rate settling… Read More
West Side Interceptor Improvements – Richmond, Indiana
Project Highlights Replace gravity sewers Collection system improvements Reduce combined sewer overflows Project Description The Richmond Sanitary District recently finished constructing over $6 million in collection system improvements, which involved… Read More
Wastewater Treatment Improvements – Syracuse, Indiana
The Problem Commonwealth was hired to investigate and provide solutions to an underperforming wastewater treatment system for their oxidation ditches, which was also impacting performance in their clarifiers, requiring frequent… Read More
Potable Water
Water System Improvements – Flora, Indiana
Water System Improvements Town of Flora, Indiana Commonwealth Engineers worked with the Town of Flora on a two-part project to make improvements to their water system. Division “A” – Water… Read More
Long Term Control Plan Improvements – Crown Point, Indiana
Commonwealth Engineers performed a Long Term Control Plan improvements for the City of Crown Point. It included: ANDERSON POND PROJECT The Crown Point Anderson Pond Project is a Long Term… Read More
Long Term Control Plan & Sewer System Modeling – Madison, Indiana
Long Term Control Plan & Sewer System Modeling City of Madison, Indiana Commonwealth Engineers performed a Value Engineering / Alternatives Assessment of the City’s CSO Collection System Improvements Project. Coordinated… Read More

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