How to Find Out Who Provides Water and Sewer to an Address

The fastest reliable answer comes from the local government, and EPA says so itself: its national map of water service areas is a first step, but it calls local government “typically the most accurate source” for whether a system serves a given property. Start with EPA’s map to get a candidate utility and its system ID, then confirm with that utility or the city or county before you budget. The stakes are real. The City of Tampa charges $2,800 for a 3/4-inch water connection inside city limits and $3,500 outside them, and a new home in unincorporated Hillsborough County pays $10,530.75 or $7,503.25 depending on which county service area it sits in (Hillsborough County fees).

This article covers how to identify the provider. Once you know it, the tap fees by city table and the city pages give the one-time charges.

Why the city name on the address doesn’t settle it

Mailing addresses follow Postal Service delivery areas, not utility boundaries. A “Houston, TX” or “Kyle, TX” address can sit outside the city’s pipes entirely, and a city can serve lots well beyond its limits. Examples from our city pages:

• Houston, Texas. A Houston mailing address does not guarantee City of Houston water; parcels in a municipal utility district (MUD) pay the district’s charges instead (Houston tap fees).
• Kyle, Texas. Some Kyle-area addresses get water from Goforth Special Utility District, not the city, and pay Goforth’s own impact fee (Kyle tap fees).
• Fort Mill, South Carolina. The Town serves addresses inside its limits and some outside them, while several named subdivisions are served by York County Utilities on a different fee schedule (Fort Mill tap fees).
• Murfreesboro, Tennessee. The city’s water department covers much of Murfreesboro, and the Consolidated Utility District of Rutherford County serves other parts of the city and county, with different connection charges (Murfreesboro tap fees).
• Lakeland, Florida. Lakeland’s water and wastewater service areas reach well past the city limits, and the same house pays $8,076 inside the city and $10,045.25 outside it (FY2026), because outside-city charges run about 25% higher; the City Code sets a 25% outside-city surcharge on wastewater charges (Lakeland tap fees).
• Buckeye, Arizona. Parts of the Buckeye area are served by Arizona Water Company or EPCOR, and the city’s water and wastewater development fees do not apply to that service (Buckeye tap fees).

Water and sewer can also come from two different providers at one address, and electricity is a separate question again. Ask about each service by name.

Step 1: EPA’s national service area map

EPA’s Office of Water publishes a Public Water System Service Areas map. It covers more than 44,000 community water systems serving about 99% of the population served by community systems. Each area carries the system’s federal ID (PWSID), so you can look the system up in other federal records.

Use it as a lead, not a verdict. EPA says about 60% of community system boundaries come from states or the systems themselves, and the rest were modeled from inputs such as building footprints and service connections. Modeled boundaries, in EPA’s words, “often differ from actual boundaries.” Each shape’s pop-up says whether it is EPA-modeled, state-sourced or system-sourced. A state- or system-sourced boundary is stronger evidence than a modeled one.

If no system shows at your location, EPA gives two usual reasons: the property is on a private well, which EPA does not regulate, or its system could not be mapped reliably. Either way, you still need a local answer.

The map covers drinking water only, so the sewer question goes to the city, county or district.

Step 2: Confirm the system in federal and state records

• SDWIS Federal Reports. EPA’s SDWIS Federal Reporting Services lists public water systems by state, city, county or system name. It confirms a system exists and gives its ID, type and population served. It does not draw boundaries.
• Consumer Confidence Reports. Every community water system must send customers an annual water quality report by July 1, and EPA’s CCR page links a search tool for finding them. A current report names the system and lists its phone number. The seller’s copy shows which system served the house.
• Texas water districts. TCEQ’s Water Districts Map Viewer shows MUDs, special utility districts and other water districts on a map and links to the state’s district database. TCEQ says it is not a survey and shows only approximate property boundaries. TCEQ’s older Drinking Water Watch has been replaced by a new Drinking Water Viewer for system records.
• Colorado special districts. Colorado’s Division of Local Government points to an interactive statewide special districts map. It warns that boundaries change, so confirm with the local jurisdiction.

Texas water and sewer territory also has a legal basis: private utilities and water supply or sewer service corporations need a certificate of convenience and necessity (CCN) from the Public Utility Commission before serving retail customers (Water Code 13.242), and Water Code section 13.257 requires each utility to record a certified copy of its CCN map and a boundary description in the real property records of every county it serves. A title search or the utility itself can show whether a parcel is inside a certificated area. We could not load the PUC’s own map pages to check them, so this article doesn’t link them.

Step 3: Ask the local government and the utility

EPA points people to local government “new resident” pages and general information lines, and to county and regional planning offices. The questions that settle it:

1. Give the parcel number, not just the street address. A new lot may not have an address yet.
2. Ask separately: “Who provides water?” and “Who provides sewer, or is this parcel on septic?”
3. Ask whether the parcel is inside that provider’s service area, or only near it. Near it can mean a line extension at your cost; see utility extension cost.
4. Ask whether an inside-city or outside-city rate applies, and whether the lot sits in a special assessment or sub-area with its own fees.
5. Ask for the answer in writing, such as an availability letter or will-serve letter.

Some utilities do part of the sorting for you: the Town of Fort Mill lists the subdivisions that York County serves. Our Murfreesboro page gives the phone numbers for the city water department and the Consolidated Utility District.

Special districts: MUD, SUD, CDD and metro districts

Special districts are separate local governments. Their fees and taxes come on top of city and county charges, and state law makes sellers disclose some of them.

What each district type is and the disclosure a buyer should get. Sources linked in the table; checked 2026-09-25.

Two limits on the Texas CCN notice matter for new homes. It does not apply to a lot inside a city served by a city-owned utility, or to a property already receiving water or sewer service from the provider on the day of sale. A vacant lot outside a city is exactly where it does apply, and the notice warns that lines may need to be built before service starts. Florida’s CDD disclosure covers the initial sale of a parcel or home, so a resale buyer may never see it.

What to ask the seller and title company

• Existing home: ask for a recent water and sewer bill. It names the provider and shows whether sewer is billed at all. No sewer charge usually means septic. See septic vs. sewer cost.
• Texas: check the Water Supply line on the seller’s disclosure and ask whether a 49.452 district notice or a 13.257 CCN notice applies. If the seller never gives a required 13.257 notice, the buyer may terminate the contract. A signed copy of the notice is recorded in the county records at closing.
• Vacant lot: ask the seller for any will-serve letter, prior tap receipt or fee payment. A fee already paid can transfer; see tap fee credits. For the physical side of reaching a lot, see cost to bring utilities to land.
• Title company: ask for the recorded documents that affect the parcel, including district filings and utility easements. A CCN map recorded in the county records under Water Code 13.257 is one of those documents. For fees that can land at closing, see utility fees at closing.

State hubs with provider notes: Texas, Florida, Colorado, Arizona, North Carolina. To price the connection once you know the provider, use the utility connection cost calculator.

Frequently asked questions