Norman Water Quality
Oklahoma
According to EPA SDWIS, Norman, Oklahoma is served by 6 community water systems covering about 139,525 people. The same extract lists 28 health-based violation records, most recently coded 5200 in 2024. Counts are historical EPA registry rows, not a current compliance or drinkability score.
Drinking water in Norman, Oklahoma is delivered through 6 EPA-regulated community water systems serving an estimated 139,525 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 28 violation records across the 6 active community systems shown here. Monitoring and reporting records are not present in the extract. The records carry 4 distinct EPA contaminant codes: LEAD AND COPPER RULE REVISIONS, Revised Total Coliform Rule, Coliform (TCR), Coliform (Pre-TCR). 7 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 Oklahoma 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 |
|---|---|---|---|
| NORMAN UTILITIES AUTHORITY | 104,868 | 3 | Health |
| OKLAHOMA UNIVERSITY | 34,000 | 0 | Clean |
| WILDFIRE ESTATES HOMEOWNERS | 285 | 10 | Health |
| MCCLAIN COUNTY RW & SD #9 | 250 | 1 | Health |
| WHIPPOORWILL ESTATES | 83 | 8 | Health |
| NORTH LATTA PARK, LLC | 39 | 6 | Health |
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 |
|---|---|---|
| MCCLAIN COUNTY RW & SD #9 | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| WILDFIRE ESTATES HOMEOWNERS | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| NORMAN UTILITIES AUTHORITY | LEAD AND COPPER RULE REVISIONS | 2024-10-17 |
| WILDFIRE ESTATES HOMEOWNERS | Revised Total Coliform Rule | 2023-06-01 |
| WILDFIRE ESTATES HOMEOWNERS | Revised Total Coliform Rule | 2023-06-01 |
| WILDFIRE ESTATES HOMEOWNERS | Revised Total Coliform Rule | 2023-06-01 |
| WILDFIRE ESTATES HOMEOWNERS | Revised Total Coliform Rule | 2023-06-01 |
| WILDFIRE ESTATES HOMEOWNERS | Revised Total Coliform Rule | 2022-06-01 |
| WILDFIRE ESTATES HOMEOWNERS | Revised Total Coliform Rule | 2022-06-01 |
| WHIPPOORWILL ESTATES | Coliform (TCR) | 2001-07-01 |
| WILDFIRE ESTATES HOMEOWNERS | Coliform (TCR) | 2000-08-01 |
| NORTH LATTA PARK, LLC | Coliform (TCR) | 1998-12-01 |
| NORTH LATTA PARK, LLC | Coliform (TCR) | 1998-10-01 |
| NORMAN UTILITIES AUTHORITY | Coliform (TCR) | 1996-10-01 |
| NORMAN UTILITIES AUTHORITY | Coliform (TCR) | 1996-10-01 |
| NORTH LATTA PARK, LLC | Coliform (TCR) | 1996-07-01 |
| WHIPPOORWILL ESTATES | Coliform (TCR) | 1994-06-01 |
| WHIPPOORWILL ESTATES | Coliform (TCR) | 1993-06-01 |
| NORTH LATTA PARK, LLC | Coliform (Pre-TCR) | 1987-07-01 |
| WHIPPOORWILL ESTATES | Coliform (Pre-TCR) | 1987-07-01 |
| WILDFIRE ESTATES HOMEOWNERS | Coliform (Pre-TCR) | 1987-07-01 |
| WHIPPOORWILL ESTATES | Coliform (Pre-TCR) | 1987-06-01 |
| WILDFIRE ESTATES HOMEOWNERS | Coliform (Pre-TCR) | 1986-10-01 |
| NORTH LATTA PARK, LLC | Coliform (Pre-TCR) | 1984-07-01 |
| WHIPPOORWILL ESTATES | Coliform (Pre-TCR) | 1983-10-01 |
| WHIPPOORWILL ESTATES | Coliform (Pre-TCR) | 1983-08-31 |
| NORTH LATTA PARK, LLC | Coliform (Pre-TCR) | 1983-06-30 |
| WHIPPOORWILL ESTATES | Coliform (Pre-TCR) | 1979-12-31 |
What are Norman's health-based records for?
Norman's health-based violation records carry 4 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 |
|---|---|---|
| Coliform (Pre-TCR) | 10 | 3 |
| Coliform (TCR) | 9 | 4 |
| Revised Total Coliform Rule | 6 | 1 |
| Lead and Copper Rule Revisions | 3 | 3 |
TRI Facilities in Norman
| Facility | Total Releases |
|---|---|
| Southwestern Wire Inc | 79.9K lbs |
| Johnson Controls Inc-Norman | 2.3K lbs |
| Bio-Cide International Inc a Kemin Co | 0 lbs |
| The Crucible LLC | 0 lbs |
| Hiland/gilt Edge Dairy | 0 lbs |
| South Norman Batch Plant | 0 lbs |
| Srm Inc-Norman Plant | 0 lbs |
Frequently Asked Questions
What does EPA SDWIS list for drinking water in Norman, Oklahoma? ▼
How many water violations does Norman have in this EPA extract? ▼
What contaminants were found in Norman water? ▼
How many water systems serve Norman? ▼
Where does Norman get its drinking water? ▼
Are there pollution sources near Norman? ▼
How does Norman compare in Oklahoma?
Of the 482 Oklahoma places with at least one community water system on file, Norman ranks #13 by number of systems (6).
Either side of it: Enid (6), Hulbert (6), Ochelata (6), Tahlequah (6)
About This Data
Figures here are the current EPA SDWIS extract joined to the 6 community water systems whose service area lists Norman, ranked against the 482 Oklahoma 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.