PlainWater
Counties → Ohio

Franklin County, Ohio

Water Systems
96
Population Served
1,503,985
Total Violations
5,342
1,188 health-based
PFAS Detected
8
of 13 tested

Violation Analysis

83.3%
Systems with Violations
55.6
Avg Violations per System
22.2%
Health-Based Violations

Water Source Types

GW
36 systems (38%)
SW
14 systems (15%)

PFAS Contamination

13
Systems Tested
8
PFAS Detected
61.5%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Franklin Ohio water systems by violation status, EPA SDWIS records.

No violations on record (6) One or more violations (44)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Columbus Public Water System 1,305,946 33 Detected
Westerville City PWS 39,000 32 Detected
Reynoldsburg City PWS 37,847 5 Detected
Gahanna City PWS 33,258 37 Clean
Bexley City PWS 14,250 15 Detected
Jefferson Water and Sewer District PWS 11,294 123 Clean
Canal Winchester City PWS 9,286 3 Clean
Sanitary District #4 8,575 40 Detected
Aqua Ohio - Blacklick 7,100 19 Clean
Aqua Ohio - Huber Ridge PWS 6,950 24 Clean
Aqua Ohio - Lake Darby 3,562 4 Clean
Groveport PWS 3,229 149 Clean
Obetz Village PWS 3,167 24 -
Aqua Ohio - Worthington Hills PWS 2,500 0 -
Timberlake Water System 1,600 201 Clean
Obetz Satellite 6 PWS 1,317 16 -
Obetz Satellite 2 PWS 1,267 11 -
Mount Carmel Grove City 1,000 0 -
Aqua Ohio - Timberbrook Pw 865 2 -
Turn Point Apostolic Church PWS 800 113 -
Enchanted Acres MHP 750 53 -
Cedar Ridge Lodge Area PWS 600 76 -
Oak Hills Mobile Home Park 505 65 -
Movement Church of Columbus 400 0 -
Covenant Church 400 0 -
Darbydale Elementary School PWS 370 12 -
Grace Evangelical Church 311 87 -
Lockbourne Village PWS 275 48 -
Leonard Park PWS 266 4 -
Great Beginnings Academy 236 238 -
Pleasant Acres MHP 217 169 -
Ponderosa Estates MHP 216 324 -
Dollar General #17176 - Grove City 203 0 -
Obetz Satellite 3 PWS 200 2 -
Makoy Center, Inc. 200 55 -
Southeast Conservation Club - Campground 200 23 -
Hayden Heights MHP 188 395 -
Country Side Mobile Home 180 725 -
The Darby House 180 95 -
Groveport Municipal Golf Course PWS 175 41 -
Obetz Satellite 4 PWS 175 2 -
Sutphen Corporation 160 46 -
Creekside Church 155 35 -
Obetz Satellite 1 PWS 151 18 -
By Way Mobile Home Park 150 74 -
Homestead Springs Golf Course 150 8 -
Sunoco Food Mart 7563 PWS 150 24 -
Brobst Memorial Park PWS 150 15 -
Darby Nature Center PWS 150 0 -
Circle S Farms PWS 150 23 -

Other Counties in Ohio

Cuyahoga County
11 systems · 1,410,751 served · 1,166 violations
Hamilton County
28 systems · 842,267 served · 1,480 violations
Montgomery County
74 systems · 529,379 served · 4,724 violations
Summit County
214 systems · 467,695 served · 17,163 violations
Lucas County
46 systems · 433,198 served · 3,569 violations
Butler County
22 systems · 378,755 served · 1,035 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Franklin County? ▼
Franklin County has 5,342 total drinking water violations across 96 water systems, of which 1,188 are health-based violations. 83.3% of systems have at least one violation.
How many people get water from Franklin County systems? ▼
Water systems in Franklin County serve approximately 1,503,985 people through 96 public water systems.
Has PFAS been detected in Franklin County water? ▼
Of 13 water systems tested for PFAS in Franklin County, 8 had PFAS detected (61.5% detection rate).
What types of water sources supply Franklin County? ▼
Water systems in Franklin County use GW (36 systems), SW (14 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 22.2% of Franklin County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.