Which engineering firms design wastewater systems for new developments in Florida?

Most searches for wastewater engineering firms in Florida return the large national names, and those firms are built around utility plant programs. The sewer, lift station, force main and package plant work that one development needs is usually designed by a Florida civil firm or by a licensed out-of-state firm that keeps wastewater in house. Which one fits turns on where the sewage goes.

What kinds of engineering firms design wastewater systems for Florida developments?

Three kinds take the work, and each is built for a different project.

• National firms that hold utility and municipal plant programs, usually under public procurement.
• Florida civil and land development firms that design the sewer side of a subdivision alongside the site work.
• Licensed out-of-state firms that take overflow or specialty wastewater work and hold a Florida license to seal it.

The group you hire from sets the kind of project the team sees every month. A firm that spends its year on a county plant reads a subdivision differently than a firm that designs them.

Do the big national firms take development-scale wastewater work?

Rarely. Their Florida wastewater work is usually a utility plant program awarded through public procurement, not a subdivision's sewer.

Miami-Dade County shows the shape of that market. In 2024, the Board of County Commissioners ratified the award of three non-exclusive professional services agreements for engineering design services for upgrades to the county's three existing wastewater treatment plants, as recorded in Miami-Dade County's resolution on the awards (opens in a new tab). The firms named are Black & Veatch, Jacobs, and Hazen and Sawyer.

The scope covered planning, design, engineering services during construction, condition assessment, and renewal and replacement at three plants. That is utility-scale work, on whole plants and their appurtenant facilities.

It is a fit question, not a quality question. A firm built to run plant upgrade programs is not organized around one development's lift station and general permit. If your project does need a plant, some of these firms will take it. Ask who will seal the drawings and whether that person has run Florida development permits.

What does a Florida development wastewater design include?

It covers the sewer side of the site, plus the permits that let it be built and operated.

MES's page on Florida wastewater engineering sets out the scope: gravity collection, lift stations and force mains, and treatment and reuse planning when a site cannot reach a public sewer.

Topography drives the layout. Flat ground leaves little fall for gravity sewers, so many Florida sites need a lift station, and the force main route follows from that decision.

The collection system needs a permit before construction. A conventional system of gravity sewers, pump stations and force mains can usually go under a general permit, with notice at least 30 days before construction under Rule 62-604.600, F.A.C. The receiving plant must have capacity for the flow.

Pump stations carry their own requirements. Every pump station needs emergency pumping capability, and some need an emergency generator in place, under Rule 62-604.400, F.A.C. Those items belong in the first conversation, not the last review.

Which agencies review a Florida wastewater design?

The Florida Department of Environmental Protection reviews it through a district office, the local government reviews the site plan, and a water management district may review the stormwater and wetland side.

MES's Florida water and wastewater page lays out that map. FDEP permits wastewater systems, and most permitting runs through its six district offices and some delegated local programs. A sewer collection system needs a permit before construction starts.

The local reviewer is not always the one the address suggests. Cities and counties review site plans under their own codes, and a mailing address does not always match the agency that reviews the site.

Water work brings in a second agency. Florida has five water management districts. They issue water use permits and review most Environmental Resource Permits for stormwater and wetland work.

FDEP district offices also permit new public water system construction, except in Miami-Dade, Hillsborough, Sarasota, Palm Beach, Polk and Volusia counties, where the county health department runs that program instead. A site that needs a water main as well as a sewer can have two different reviewers.

When does a development need its own treatment plant?

When the site cannot reach a public sewer, or the receiving plant cannot take the flow. A Florida development can then build its own plant, with an FDEP permit.

Capacity comes first. MES starts a Florida wastewater design by confirming the receiving utility has capacity for the development, because capacity decides the design and the phasing. The general permit is available only when the receiving plant has capacity and is not under an FDEP order for effluent violations or its ability to treat.

If the answer is no, the project moves to a plant. Plants that discharge to Tampa Bay, Sarasota Bay, Biscayne Bay, the Indian River Lagoon and other listed waters must provide advanced waste treatment, which changes the process selection and the footprint.

Reuse is the direction the state is pushing. State law favors reuse of reclaimed water, and utilities that discharge to surface waters must plan to end nonbeneficial discharge by January 1, 2032, with some exemptions. For a developer, that shapes whether the plant is designed for disposal or for water somebody can use. Our discussion of selling treated wastewater to industry follows that path further.

How do you check that a firm is set up for Florida development work?

Score each item below yes or no. A firm is ready for your project only when every item is a yes.

1. The firm holds a Florida license, or a named Florida-licensed engineer will seal the drawings.
2. Someone on the assigned team has taken a domestic wastewater collection system through an FDEP district office.
3. The firm has confirmed which agency will review your site, in writing.
4. The firm checked the receiving utility's capacity before it priced the work.
5. The proposal names the person who does the design, not only the person who sells it.

Then put these questions on the kickoff agenda:

• Which agency reviews this site, and who at your firm has submitted to it?
• Does the receiving plant have capacity, and who confirmed it?
• Is the site on a lift station, and where does the force main go?
• If a plant is needed, what discharge or reuse path is the design built around?

What should you hand over at kickoff?

Enough for the engineer to confirm the agency, the capacity and the layout: the survey, the utility's will-serve or capacity answer, the site plan and the phasing. Missing inputs are what turn a design into a revision cycle.

“and then maybe we don't have everything and we start freaking out, right?”

A water engineering firm we spoke with

That is the case for sending the capacity letter and the survey with the kickoff, not after the first layout. A firm that asks for them before it starts is telling you something good about how it works.

Scope and limits. This article covers general Florida requirements for development wastewater design, based on the sources cited. County rules, utility requirements and the condition of the receiving plant vary by location and change, so confirm the reviewing agencies and the capacity answer for your own project before you rely on any of it. It is general education, not a design for your site.

Frequently asked questions

Do you need a Florida license to design a wastewater system there?

Yes. MES is licensed in Florida, and a firm based in another state can design Florida systems when it holds a Florida license. MES does that work from its McKinney, Texas office.

Who permits a new sewer line in Florida?

Usually an FDEP district office. A conventional gravity sewer, pump station and force main system typically goes under a general permit, and the system still needs that permit before construction starts.

Can a developer build a private wastewater plant in Florida?

Yes, with an FDEP permit. State law also favors reuse of reclaimed water, so the design usually has to answer where the treated water goes.

I run a small civil firm in Florida and a developer wants a wastewater plant designed on a site we already have under contract. Who should we bring in, and when?

Bring in a wastewater designer before the site plan is fixed, because the plant footprint, the discharge or reuse path and the FDEP permit drive the layout. A firm that designs both the collection system and the plant can carry the whole sewer side while your team keeps the site work.

I am a project manager for a developer in Central Florida and our engineer of record is based in another state. What should we ask them to prove before we rely on their wastewater design?

Ask for the Florida license and the name of the engineer who will seal the drawings, the agency they expect to review the site, and the capacity answer from the receiving utility. Those answers show whether they have done Florida development work or are learning it on your project.

Does a lift station change who you hire?

Not the firm, but the scope. A lift station adds emergency pumping capability and, on some stations, an emergency generator, so the design team needs that experience in house or on call.

Related Resources

• FDEP Permitting for Wastewater Systems in Florida: A Practical Guide for Developers
• What should a civil engineering firm verify before handing a wastewater lift station design to a specialist?
• Cloacina's Integrated Wastewater Solutions: How Developer-Focused Design Creates Better Treatment Systems
• Why Speed Is a Design Constraint: How Modern Engineering Firms Deliver Infrastructure Faster

Choosing a Wastewater Engineering Firm for a Florida Development?

We design the sewer side of Florida development, from gravity collection and lift stations to the treatment plant when no sewer is available, and we will tell you which parts your team should keep.

We specialize in:

• Florida wastewater collection and lift station design
• Force main routing and hydraulic design
• Package and private treatment plant design
• Reclaimed water and reuse planning
• FDEP permitting support
• Wastewater design overflow for engineering firms

Modern Engineering Solutions, McKinney, Texas. Contact: (214) 833-6748 or mod-eng.com