50 Years of Engineering and Consulting
Service Excellence

Featured
PFAS Challenges and Solutions for Water Utilities
Per- and polyfluoroalkyl substances (PFAS) present unique challenges for water utilities tasked with ensuring safe drinking water. On April 10, 2024, the U.S. Environmental Protection Agency (EPA) finalized a National… Read More
Featured
How Forever Chemicals Enter Water Systems
When PFAS enter water systems they become a major concern for the environment and public health.
Featured
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.
Featured
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.
Community
Commonwealth Joins Newburgh, IN for Ohio River Sweep
On May 11, 2024, Commonwealth Engineers’ Evansville Office staff, teamed up to participate in Newburgh’s Annual Ohio River Sweep to increase water quality.
Awards
2024 Winner of the Central Indiana Top Workplaces Award
Commonwealth Engineers has been named a 2024 Central Indiana Top Workplace for the 6th consecutive year!
Awards
ACEC 2024 Engineering Excellence Awards
The American Council of Engineering Companies (ACEC) of Indiana has announced its 2024 Engineering Excellence Awards. Commonwealth Engineers is grateful for our continued partnerships with communities who strive daily to… Read More
News
Biden-Harris Administration Finalizes First-Ever National Drinking Water Standard to Protect 100M People from PFAS Pollution
As part of the Administration’s commitment to combating PFAS pollution, EPA announces $1B investment through President Biden’s Investing in America agenda to address PFAS in drinking water April 10, 2024… Read More
News
Portage Breaks Ground on WWTP Improvements
The City of Portage, Indiana broke ground on the Wastewater Treatment Plant Improvements Project, which will provide critical rehabilitation.
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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.

WHAT ARE YOUR GREATEST CHALLENGES?

INFRASTRUCTURE | REGULATORY | PLANNING | BUDGET

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! 


OFFICES

INDIANA AND KENTUCKY

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
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
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
Wastewater
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
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
Wastewater
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
Wastewater
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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