Columbus Water Quality
Ohio
According to EPA SDWIS, Columbus, Ohio is served by 19 community water systems covering about 1,338,513 people. The same extract lists 15 health-based violation records, most recently coded 0800 in 2025. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Columbus, Ohio is delivered through 19 EPA-regulated community water systems serving an estimated 1,338,513 people. Each system is tracked in the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act, which requires testing for regulated contaminants, consumer notification of violations, and publication of an annual Consumer Confidence Report.
PlainEnviro's health-based SDWIS extract shows 15 violation records across the 19 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 6 distinct EPA contaminant codes: Long Term 2 Enhanced Surface Water Treatment Rule, LEAD AND COPPER RULE REVISIONS, Revised Total Coliform Rule, Groundwater Rule, Nitrate and 1 others. 46 TRI-reporting industrial facilities are also located within the city limits.
A past EPA health-based registry row does not describe water delivered today or current compliance status; utilities notify customers and remediate under state primacy oversight when required. For current water-quality status and treatment practices, review your local utility's most recent Consumer Confidence Report or contact the Ohio drinking water program. All records above reflect federal EPA SDWIS data and are not independently verified against state databases.
Community Water Systems
| System Name | Pop. Served | Violations | Status |
|---|---|---|---|
| COLUMBUS PUBLIC WATER SYSTEM | 1,305,946 | 3 | Health |
| MID-OHIO WSD - CHRISMAN AVENUE WTP | 10,256 | 4 | Health |
| SANITARY DISTRICT #4 | 8,575 | 1 | Health |
| MID-OHIO WSD - OLD SPRINGFIELD ROAD WTP | 5,176 | 0 | Clean |
| MID-OHIO WSD - JACKSON STREET WTP | 4,467 | 0 | Clean |
| TIMBERLAKE WATER SYSTEM | 1,600 | 1 | Health |
| AURORA ESTATES | 574 | 0 | Clean |
| GALLOWAY WATER SYSTEM PWS | 350 | 0 | Clean |
| FOXLAIR FARMS MHP INC. | 275 | 0 | Clean |
| LEONARD PARK PWS | 266 | 1 | Health |
| ONTARIO PLACE | 248 | 0 | Clean |
| CHARDON ESTATES | 217 | 3 | Health |
| MAPLE RIDGE MHC, LIMITED | 130 | 0 | Clean |
| WAGON WHEEL MOBILE HOME | 118 | 0 | Clean |
| RUSTIC ACRES PARK | 108 | 2 | Health |
| FOREST HILLS MHP | 78 | 0 | Clean |
| WATERFALL ESTATES MHP | 51 | 0 | Clean |
| MID-OHIO WSD - HIGH FREE PIKE WTP | 45 | 0 | Clean |
| THE LOGAN LODGE | 33 | 0 | Clean |
Does this city have health-based water violations?
These health-based records can represent Maximum Contaminant Level (MCL), Treatment Technique (TT), or Maximum Residual Disinfectant Level (MRDL) categories. A historical record does not establish that water is currently unsafe.
| Water system | Contaminant | Begin Date |
|---|---|---|
| CHARDON ESTATES | Long Term 2 Enhanced Surface Water Treatment Rule | 2025-06-29 |
| LEONARD PARK PWS | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| TIMBERLAKE WATER SYSTEM | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| SANITARY DISTRICT #4 | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| RUSTIC ACRES PARK | Revised Total Coliform Rule | 2023-10-03 |
| RUSTIC ACRES PARK | Revised Total Coliform Rule | 2023-10-03 |
| CHARDON ESTATES | Groundwater Rule | 2023-03-06 |
| MID-OHIO WSD - CHRISMAN AVENUE WTP | Revised Total Coliform Rule | 2022-07-01 |
| MID-OHIO WSD - CHRISMAN AVENUE WTP | Revised Total Coliform Rule | 2022-07-01 |
| MID-OHIO WSD - CHRISMAN AVENUE WTP | Revised Total Coliform Rule | 2022-07-01 |
| MID-OHIO WSD - CHRISMAN AVENUE WTP | Revised Total Coliform Rule | 2022-07-01 |
| COLUMBUS PUBLIC WATER SYSTEM | Nitrate | 2016-06-01 |
| COLUMBUS PUBLIC WATER SYSTEM | Nitrate | 2016-06-01 |
| COLUMBUS PUBLIC WATER SYSTEM | Nitrate | 2016-06-01 |
| CHARDON ESTATES | Lead and Copper Rule | 2003-07-01 |
What are Columbus's health-based records for?
Columbus's health-based violation records carry 6 distinct EPA codes: some name a substance, others the drinking-water rule that was breached. Counts are records on file in the EPA SDWIS extract, not current test results.
| Contaminant | Records | Systems |
|---|---|---|
| Revised Total Coliform Rule | 6 | 2 |
| Lead and Copper Rule Revisions | 3 | 3 |
| Nitrate | 3 | 1 |
| Groundwater Rule | 1 | 1 |
| Long Term 2 Enhanced Surface Water Treatment Rule | 1 | 1 |
| Lead and Copper Rule | 1 | 1 |
TRI Facilities in Columbus
| Facility | Total Releases |
|---|---|
| Gfs Chemicals Inc | 677.1K lbs |
| V&s Columbus Galvanizing LLC | 181.9K lbs |
| Anheuser-Busch Columbus Brewery | 133.4K lbs |
| Core Molding Technologies | 130.2K lbs |
| Mills Metal Finishing | 120.9K lbs |
| Sonoco Metal Packaging LLC | 119.1K lbs |
| Worthington Cylinder Corp | 98.6K lbs |
| Capital Resin Corp | 89.0K lbs |
| Opc Polymers | 68.5K lbs |
| Mettler Toledo LLC | 55.1K lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Columbus, Ohio? ▼
How many water violations does Columbus have in this EPA extract? ▼
What contaminants were found in Columbus water? ▼
How many water systems serve Columbus? ▼
Where does Columbus get its drinking water? ▼
Are there pollution sources near Columbus? ▼
How does Columbus compare in Ohio?
Of the 581 Ohio places with at least one community water system on file, Columbus ranks #2 by number of systems (19).
Either side of it: Akron (20), Mansfield (19), Cincinnati (17)
About This Data
Figures here are the current EPA SDWIS extract joined to the 19 community water systems whose service area lists Columbus, ranked against the 581 Ohio places with at least one system on file. Data current as of 2026-08-25.
Water system data comes from the EPA's Safe Drinking Water Information System (SDWIS). PlainEnviro's violation fetch is restricted upstream to records EPA flags as health-based and then joined to active community water systems. Monitoring and reporting violations are not included.
A health-based violation row in this extract is a historical EPA registry entry. It does not describe water delivered today or current compliance status. Many records are later resolved, and public water systems notify customers when required. For current conditions, contact your local water utility or the state drinking water program.
TRI facility data comes from the EPA Toxic Release Inventory. Facilities shown are those that self-report to the TRI program. PlainEnviro presents this data without advocacy framing.
Read our methodology - how this data is sourced, computed, and verified.