Good Water Quality
| Contaminant | Detected Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| Lead |
561.0
|
15 ppb | 1 ppb | Exceeded |
| Copper |
2328.0
|
1300 ppb | 300 ppb | Exceeded |
| Compound | Level | EPA MCL | Health Guideline | Status |
|---|---|---|---|---|
| PFBS | 9.5 ppt | 2000 ppt | 100 ppt | Below limit |
| PFBA | 8.5 ppt | No standard | 500 ppt | Unregulated |
Water Quality Summary
Tap water quality in Chattanooga, Tennessee (37405) receives an overall grade of B (Good) with a score of 77 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is roughly in line with the Tennessee state average of 81. The area is served by 2 water systems providing water to approximately 211,551 people, using surface water sources. Testing has found elevated levels of Lead, Copper that warrant attention. PFAS testing detected 2 compounds, all currently below EPA limits. The area has a clean violation record over the past 5 years — a positive indicator of consistent water quality management.
A score of 77/100 means the water in Chattanooga, TN is generally good and meets EPA standards, with only minor areas of concern. There may be low levels of detectable contaminants or a small number of non-critical violations. Most residents can feel comfortable with their tap water quality, though basic filtration can provide an extra layer of protection.
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.
Copper can leach into water from copper plumbing, especially in newer homes or when water is acidic.
Short-term exposure above 1,300 ppb can cause gastrointestinal distress. Long-term exposure may cause liver or kidney damage. People with Wilson's disease are especially vulnerable.
Copper pipes, fittings, and faucets are the most common source. Corrosive (low-pH) water accelerates copper leaching.
If copper levels are elevated, flush pipes by running water for 15–30 seconds before use. Reverse osmosis and distillation systems effectively remove copper.
Common Questions
Based on EPA data, tap water in Chattanooga, Tennessee receives a grade of B (Good) with a score of 77/100. This indicates the water meets federal standards and has relatively few concerns. However, individual homes may still have localized issues such as lead from old plumbing.
ZIP code 37405 is served by 2 water systems using surface water sources, providing water to approximately 211,551 people. Surface water systems are more susceptible to contamination from agricultural runoff, industrial discharge, and weather events, but typically undergo more extensive treatment including filtration and disinfection.
Yes — lead levels in Chattanooga, Tennessee are 561.0 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.
2 PFAS compounds were detected in water serving Chattanooga, Tennessee, 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 Chattanooga, Tennessee have zero violations in the last 5 years. This is a positive indicator of consistent regulatory compliance and water quality management.
Based on detected contaminants (lead, PFAS, copper), residents in Chattanooga, Tennessee 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.
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