County · Ohio

Franklin County, Ohio: drinking water records

Name: Drinking water records for Franklin County, Ohio
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 31 community water systems across 44 ZIP codes in Franklin County, then find water-testing resources and available recent monitoring-station readings.

In focus31Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 13 of the 31 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 31 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	PFAS found	Health-based violations	Lead, 9 in 10 homes at or below
Sanitary District #4 OH2501003	8,575	120	6	1	1.3 ppbbelow the action level
Timberlake Water System OH2501812	1,600	60	0	1	1.8 ppbbelow the action level
Columbus Public Water System OH2504412	1,305,946	300	6	0	1.2 ppbbelow the action level
Westerville City PWS OH2503411	39,000	120	1	0	1.5 ppbbelow the action level
Reynoldsburg City PWS OH2503203	37,847	180	1	0	2.1 ppbbelow the action level
Gahanna City PWS OH2501303	33,258	120	0	0	0.5 ppbbelow the action level
Bexley City PWS OH2500103	14,250	240	5	0	0 ppbbelow the action level
Jefferson Water and Sewer District PWS OH2504012	11,294	60	0	0	2 ppbbelow the action level
Canal Winchester City PWS OH2500312	9,286	60	0	0	2.1 ppbbelow the action level
Aqua Ohio - Blacklick OH2502412	7,100	60	0	0	0 ppbbelow the action level
Aqua Ohio - Huber Ridge PWS OH2502512	5,393	60	0	0	0 ppbbelow the action level
Aqua Ohio - Lake Darby OH2502612	3,562	60	0	0	0 ppbbelow the action level
Groveport PWS OH2501512	3,229	60	0	0	1.5 ppbbelow the action level
Obetz Village PWS OH2502212	3,167	0	0	1	1.2 ppbbelow the action level
Oak Hills Mobile Home Park OH2502112	505	0	0	5	1.1 ppbbelow the action level
Lockbourne Village PWS OH2503903	275	0	0	1	0 ppbbelow the action level
Leonard Park PWS OH2570717	266	0	0	1	0 ppbbelow the action level
Community Gardens MHP OH2500512	74	0	0	1	6.2 ppbbelow the action level
Aqua Ohio - Worthington Hills PWS OH2502812	2,500	0	0	0	0 ppbbelow the action level
Obetz Satellite 6 PWS OH2566512	1,317	0	0	0	0 ppbbelow the action level
Obetz Satellite 2 PWS OH2554603	1,267	0	0	0	0 ppbbelow the action level
Aqua Ohio - Timberbrook Pw OH2502712	865	0	0	0	2.7 ppbbelow the action level
Enchanted Acres MHP OH2500712	750	0	0	0	1 ppbbelow the action level
Pleasant Acres MHP OH2502912	217	0	0	0	1.1 ppbbelow the action level
Ponderosa Estates MHP OH2503012	216	0	0	0	0 ppbbelow the action level
Hayden Heights MHP OH2501612	188	0	0	0	9 ppbbelow the action level
Country Side Mobile Home OH2500612	180	0	0	0	3 ppbbelow the action level
Obetz Satellite 1 PWS OH2504303	151	0	0	0	0.7 ppbbelow the action level
By Way Mobile Home Park OH2500212	150	0	0	0	0 ppbbelow the action level
Galloway Water System PWS OH2570758	350	0	0	0	not reported
Monterey Care Center OH2570736	130	0	0	0	not reported

USGS · Monitoring stations

The water, more recently.

Available station readings in Franklin County, Ohio. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in Franklin County

44ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

Columbus
Dublin
Gahanna
Grove City
Groveport
Harrisburg
Hilliard
New Albany
Reynoldsburg
Upper Arlington
Westerville
Worthington

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

43002Columbus
43004Columbus
43016Dublin
43017Dublin
43026Hilliard
43054New Albany
43068Reynoldsburg
43081Westerville
43085Worthington
43109Columbus
43119Columbus
43123Grove City
43125Groveport
43126Harrisburg
43137Columbus
43201Columbus
43202Columbus
43203Columbus
43204Columbus
43205Columbus
43206Columbus
43207Columbus
43209Columbus
43210Columbus
43211Columbus
43212Columbus
43213Columbus
43214Columbus
43215Columbus
43217Columbus
43218Columbus
43219Columbus
43220Upper Arlington
43221Upper Arlington
43222Columbus
43223Columbus
43224Columbus
43227Columbus
43228Columbus
43229Columbus
43230Gahanna
43231Columbus
43232Columbus
43235Columbus

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASChoosing a PFAS filterPFAS was found in 5 of the 13 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter10 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near Franklin County

All Ohio counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.