Poor Water Quality
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
19.0
|
15 ppb | 1 ppb | Exceeded |
| Compound | Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| PFBA | 7.5 ppt | No standard | 500 ppt | Unregulated |
| PFPeA | 4.7 ppt | No standard | — | Unregulated |
| PFBS | 3.0 ppt | 2000 ppt | 100 ppt | Below limit |
Water Quality Summary
Tap water quality in Norman, Oklahoma (73070) receives an overall grade of D (Poor) with a score of 37 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 22 points below the Oklahoma state average of 59. Compared to the national average (75), this area scores significantly lower. The area is served by 3 water systems providing water to approximately 748,907 people, using surface water and groundwater sources. Testing has found elevated levels of Lead that warrant attention. PFAS testing detected 3 compounds, all currently below EPA limits. Over the past 5 years, water systems here have accumulated 432 violations, including 1 health-based violations.
A score of 37/100 signals poor water quality in Norman, OK. Significant issues have been identified, which may include multiple violations, contaminant levels near or above regulatory limits, or PFAS contamination. We recommend reviewing the detailed contaminant data below, considering a certified water filter, and checking your utility's Consumer Confidence Report for the latest information.
Health Information
Lead is a toxic metal that can leach from aging pipes and plumbing fixtures.
Even low levels of lead exposure can cause developmental delays in children, kidney damage, and cardiovascular effects in adults. The EPA action level is 15 ppb, but health experts recommend no safe level of lead in drinking water.
Lead enters water primarily through corrosion of lead service lines, lead solder, and brass fixtures — especially in homes built before 1986.
If lead is detected above 1 ppb, consider using a certified lead-removal filter (NSF/ANSI 53) for drinking and cooking water. Run cold water for 30 seconds before use if water has been sitting in pipes.
Common Questions
Tap water in Norman, Oklahoma receives a grade of D (Poor) with a score of 37/100. This indicates significant water quality concerns based on violation history, contaminant levels, or enforcement actions. We recommend reviewing the specific contaminants detected below and considering a certified water filter.
ZIP code 73070 is served by 3 water systems using surface water, groundwater sources, providing water to approximately 748,907 people. Multiple source types mean your water may come from a blend of surface and underground sources.
Yes — lead levels in Norman, Oklahoma are 19.0 ppb, which exceeds the EPA action level of 15 ppb. This is a serious concern. We strongly recommend using a certified lead-removal filter for all drinking and cooking water, and having your water independently tested.
3 PFAS compounds were detected in water serving Norman, Oklahoma, but all are currently below EPA limits. While levels are within regulatory standards, some health organizations recommend minimizing any PFAS exposure. Activated carbon or reverse osmosis filters can reduce PFAS levels.
Water systems serving Norman, Oklahoma have received 432 violations in the last 5 years, including 1 health-based violation. Violations can range from paperwork issues (monitoring & reporting) to serious health-based violations where contaminant levels exceeded safe limits. Review the violation details above for specifics.
Based on detected contaminants (lead, PFAS), residents in Norman, Oklahoma should consider: Reverse osmosis (RO) system — most effective for PFAS, lead, and other contaminants. Always look for filters with NSF/ANSI certification for the specific contaminants you want to remove.