Find your water by ZIP code.
Look up any of 18,133 covered ZIP codes to see the public water systems on record for that area, or browse by state.
ZIP codes by state
- Birmingham352013520235203352043520535206352073520835209352103521135212352133521435215352163521735218352193522035221352223522335224352263522835229352313523235233352343523535236352373523835242352433524435246352493525335254352553525935260352613526635270352823528335285352873528835290352913529235293352943529535296352973529835299
- Mobile366013660236603366043660536606366073660836609366103661136612366153661636617366183661936625366283663036633366403664136644366523666036663366703667136675366853668836689366913669336695
- Montgomery3610136102361033610436105361063610736108361093611036111361123611336114361153611636117361183611936120361213612336124361253613036131361323613336134361353614036141361423617736191
- Huntsville358013580235803358043580535806358073580835809358103581135812358133581435815358163582435893358943589535896358973589835899
- Tuscaloosa35401354023540335404354053540635407354853548635487
- Anniston36201362023620436205362063620736210
- Gadsden359013590235903359043590535907
- Decatur3560135602356033560935699
Water quality by ZIP code, from public records
- The water systems on recordEvery public water system our records link to the ZIP, and how each link was made: listed by EPA for the ZIP, matched by city area, or buying water from a wholesaler.
- Each system’s resultsWhat the system’s records show: substances detected, each against its listed reference, what was tested and not found, and water hardness.
- Where to go nextA link to each system’s full record, where every result opens its evidence, and next steps at home, including testing your own tap.
Questions about ZIP code lookups
Can I check my water quality by ZIP code?
Yes. Type your 5-digit ZIP code above to see the public water systems on record for that area and what their records show. If a ZIP isn’t in the directory yet, Find my water can still look it up by city or by the water system ID (PWSID) on your bill.
Why can one ZIP code show more than one water system?
A ZIP code is a postal area, not a water service area. One ZIP can be served by two or more utilities, so the ZIP page lists each one. Your water bill names your supplier.
Where does the data come from?
From public records, mainly EPA drinking water data and utility reports. Every result links to its record on the water system’s page, which names the source.
Is a ZIP code lookup the same as testing my tap?
No. Utility records describe the water a system delivers, not the water at your faucet. Lead from home plumbing, for example, only shows up in a test of your own tap.