Tap Water Quality Report
Tap water quality in LEBANON, Ohio
Tap water in LEBANON, Ohio receives a grade of F (59/100) from TapWaterSafety.org. It's served by WARREN COUNTY. The most significant water quality concerns are: PFAS contamination; Haloacetic acids (HAA9) significantly above health guideline; Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in LEBANON's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving LEBANON.
PFAS contamination
Severe concernPerfluorononanoic acid (PFNA), Perfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 11.8 ppb, 197x above the EWG health guideline of 0.06 ppb.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 0.164 ppt, 164x above the EWG health guideline of 0.001 ppt.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 17.2 ppb, 115x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for WARREN COUNTY (system ID OH8301512) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Consumer Confidence Rule | Other (e.g. public notice) | 11/09/2018 | Open |
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for LEBANON
Filters matched to the specific contaminants in LEBANON's water supply.
Filter certified for PFOA/PFOS (NSF/ANSI 53 or 58)
$180-$750Reverse osmosis and some carbon block filters reduce PFAS. Look for certification to NSF/ANSI 53 or 58 for PFOA/PFOS.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
Disclosure: TapWaterSafety earns a commission from purchases made through these links. This does not influence our scoring methodology or filter selection.
All contaminants detected in LEBANON's tap water
Every contaminant identified, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal. Why we show multiple standards →
| Contaminant | Detected | EWG US health-based |
EPA US legal |
EU DWD Europe |
WHO global |
CA PHG strictest US |
Tested sample year |
Status |
|---|---|---|---|---|---|---|---|---|
| Perfluorooctane sulfonate (PFOS) PFAS |
15.3 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | EPA violation |
| Haloacetic acids (HAA9) Disinfection byproduct |
11.8 ppb | 0.06 | — | — | — | — | — | 197× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.164 ppt | 0.001 | 10.0 | — | — | — | — | 164× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
17.2 ppb | 0.15 | 80.0 | 100 | — | — | — | 115× over |
| Bromodichloromethane Disinfection byproduct |
4.57 ppb | 0.06 | — | — | — | — | — | 76× over |
| Dibromochloromethane Disinfection byproduct |
5.14 ppb | 0.1 | — | — | — | — | — | 51× over |
| Dibromoacetic acid Disinfection byproduct |
1.15 ppb | 0.03 | — | — | — | — | — | 38× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
3.52 ppb | 0.1 | 60.0 | 60 | — | — | — | 35× over |
| Perfluorononanoic acid (PFNA) PFAS |
0.088 ppt | 0.006 | 10.0 | — | — | — | — | 15× over |
| Chloroform Disinfection byproduct |
4.13 ppb | 0.4 | — | — | — | — | — | 10× over |
| Nitrate Inorganic |
0.914 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 6.5× over |
| Dichloroacetic acid Disinfection byproduct |
1.18 ppb | 0.2 | — | — | — | — | — | 5.9× over |
| Trichloroacetic acid Disinfection byproduct |
0.583 ppb | 0.1 | — | — | — | — | — | 5.8× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.361 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 4.0× over |
| Bromoform Disinfection byproduct |
1.94 ppb | 0.5 | — | — | — | — | — | 3.9× over |
| Nitrate and nitrite Inorganic |
0.5 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 3.6× over |
| Chlorate Disinfection byproduct |
50.5 ppb | 210.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
85.2 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Molybdenum Other |
1.54 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
1.62 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.283 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.329 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
0.392 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.97 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
All values in the unit of the detected level. Red cells indicate the detected level exceeds that standard. Some contaminants have limits in some jurisdictions but not others (shown as —). The "Tested" column shows the year each contaminant sample was collected.
Sources: US EPA, EU Drinking Water Directive 2020/2184, WHO Guidelines, California OEHHA PHGs, EWG Tap Water Database.
Treatment plant contact info
For service issues, water quality concerns, or to request a Consumer Confidence Report from WARREN COUNTY.