Tap Water Quality Report
Tap water quality in MARYVILLE, Tennessee
Tap water in MARYVILLE, Tennessee receives a grade of D (69/100) from TapWaterSafety.org. It's served by SOUTH BLOUNT UTILITY DISTRICT. The most significant water quality concerns are: Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Trichloroacetic acid significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in MARYVILLE's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving MARYVILLE.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 52.6 ppb, 876x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 45.9 ppb, 459x above the EWG health guideline of 0.1 ppb.
Trichloroacetic acid significantly above health guideline
Moderate concernTrichloroacetic acid detected at 28.5 ppb, 285x above the EWG health guideline of 0.1 ppb.
EPA compliance record
Official U.S. EPA records for SOUTH BLOUNT UTILITY DISTRICT (system ID TN0000643) for the last 3 years. Checked 2026-10-07.
| Rule | Type | Since | Status |
|---|---|---|---|
| Consumer Confidence Rule | Other (e.g. public notice) | 07/01/2025 | Open |
| Revised Total Coliform Rule | Contaminant above the legal limit | 05/01/2025 | Resolved |
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 MARYVILLE
Filters matched to the specific contaminants in MARYVILLE's water supply.
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 MARYVILLE'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 |
|---|---|---|---|---|---|---|---|---|
| Haloacetic acids (HAA9) Disinfection byproduct |
52.6 ppb | 0.06 | — | — | — | — | — | 876× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
45.9 ppb | 0.1 | 60.0 | 60 | — | — | — | 459× over |
| Trichloroacetic acid Disinfection byproduct |
28.5 ppb | 0.1 | — | — | — | — | — | 285× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
40.0 ppb | 0.15 | 80.0 | 100 | — | — | — | 266× over |
| Chloroform Disinfection byproduct |
35.3 ppb | 0.4 | — | — | — | — | — | 88× over |
| Dichloroacetic acid Disinfection byproduct |
16.6 ppb | 0.2 | — | — | — | — | — | 83× over |
| Bromodichloromethane Disinfection byproduct |
3.22 ppb | 0.06 | — | — | — | — | — | 54× over |
| Chromium (hexavalent) Heavy metal |
0.239 ppb | 0.02 | — | — | — | — | — | 12× over |
| Chlorate Disinfection byproduct |
302.5 ppb | 210.0 | — | — | — | — | — | 1.4× over |
| Nitrate Inorganic |
0.136 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Manganese Heavy metal |
9.97 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.933 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.1 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0204 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Chlorodifluoromethane Other |
0.06 ppb | — | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.348 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 SOUTH BLOUNT UTILITY DISTRICT.