Tap Water Quality Report
Tap water quality in WILSON MILLS, North Carolina
Tap water in WILSON MILLS, North Carolina receives a grade of F (55/100) from TapWaterSafety.org. It's served by JOHNSTON CO-WEST. The most significant water quality concerns are: PFAS contamination; Perfluorohexane sulfonate (PFHXS) significantly above health guideline; Haloacetic acids (HAA9) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in WILSON MILLS's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving WILSON MILLS.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS), Perfluorooctanoic acid (PFOA) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Perfluorohexane sulfonate (PFHXS) significantly above health guideline
Moderate concernPerfluorohexane sulfonate (PFHXS) detected at 0.571 ppt, 571x above the EWG health guideline of 0.001 ppt.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 30.2 ppb, 503x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 31.9 ppb, 213x above the EWG health guideline of 0.15 ppb.
Recommended filters for WILSON MILLS
Filters matched to the specific contaminants in WILSON MILLS's water supply.
Reverse Osmosis or NSF P473 certified carbon
$80-$750Activated carbon and RO are the only technologies proven to remove PFAS at certified levels.
Carbon block (NSF/ANSI 42 + 53)
$40-$750Activated carbon is highly effective for disinfection byproducts like TTHM and HAA5.
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 WILSON MILLS'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 |
4.54 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | EPA violation |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.571 ppt | 0.001 | 10.0 | — | — | — | — | 571× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
30.2 ppb | 0.06 | — | — | — | — | — | 503× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
31.9 ppb | 0.15 | 80.0 | 100 | — | — | — | 213× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
17.8 ppb | 0.1 | 60.0 | 60 | — | — | — | 178× over |
| Bromodichloromethane Disinfection byproduct |
9.52 ppb | 0.06 | — | — | — | — | — | 159× over |
| Dibromoacetic acid Disinfection byproduct |
3.0 ppb | 0.03 | — | — | — | — | — | 100× over |
| Dibromochloromethane Disinfection byproduct |
6.55 ppb | 0.1 | — | — | — | — | — | 66× over |
| Trichloroacetic acid Disinfection byproduct |
4.96 ppb | 0.1 | — | — | — | — | — | 50× over |
| Perfluorooctanoic acid (PFOA) PFAS |
3.85 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 43× over |
| Dichloroacetic acid Disinfection byproduct |
8.18 ppb | 0.2 | — | — | — | — | — | 41× over |
| Chloroform Disinfection byproduct |
13.9 ppb | 0.4 | — | — | — | — | — | 35× over |
| Chromium (hexavalent) Heavy metal |
0.104 ppb | 0.02 | — | — | — | — | — | 5.2× over |
| Bromoform Disinfection byproduct |
1.97 ppb | 0.5 | — | — | — | — | — | 3.9× over |
| Chlorate Disinfection byproduct |
404.0 ppb | 210.0 | — | — | — | — | — | 1.9× over |
| Simazine Pesticide/Herbicide |
0.06 ppb | 0.1 | 4.0 | — | — | — | — | Below guideline |
| Atrazine Pesticide/Herbicide |
0.029 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.0658 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Perfluoro-2-methyl-3-oxahexanoic acid (GenX) PFAS |
0.067 ppt | 1.0 | — | — | — | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
1.56 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
17.9 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
15.4 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
12.7 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
0.289 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.0938 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0496 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.288 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.265 ppb | — | — | — | — | — | — | 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 JOHNSTON CO-WEST.