Tap Water Quality Report
Tap water quality in St. Cloud, Minnesota
Tap water in St. Cloud, Minnesota receives a grade of F (55/100) from TapWaterSafety.org. It's served by Saint Cloud. The most significant water quality concerns are: PFAS contamination; Haloacetic acids (HAA9) significantly above health guideline; Haloacetic acids (HAA5) significantly above health guideline; Total trihalomethanes (TTHMs) significantly above health guideline. Data sources: EPA SDWIS, EPA ECHO, EWG Tap Water Database.
What's in St. Cloud's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving St. Cloud.
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.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 13.5 ppb, 225x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 14.9 ppb, 149x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 19.5 ppb, 130x above the EWG health guideline of 0.15 ppb.
Recommended filters for St. Cloud
Filters matched to the specific contaminants in St. Cloud'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 St. Cloud'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 |
13.5 ppb | 0.06 | — | — | — | — | — | 225× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
14.9 ppb | 0.1 | 60.0 | 60 | — | — | — | 149× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
19.5 ppb | 0.15 | 80.0 | 100 | — | — | — | 130× over |
| Dichloroacetic acid Disinfection byproduct |
12.0 ppb | 0.2 | — | — | — | — | — | 60× over |
| Chloroform Disinfection byproduct |
17.3 ppb | 0.4 | — | — | — | — | — | 43× over |
| Bromodichloromethane Disinfection byproduct |
2.16 ppb | 0.06 | — | — | — | — | — | 36× over |
| Trichloroacetic acid Disinfection byproduct |
2.71 ppb | 0.1 | — | — | — | — | — | 27× over |
| Chromium (hexavalent) Heavy metal |
0.23 ppb | 0.02 | — | — | — | — | — | 12× over |
| Nitrate Inorganic |
0.39 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 2.8× over |
| Perfluorooctanoic acid (PFOA) PFAS |
0.114 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 1.3× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.124 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | Below guideline |
| Manganese Heavy metal |
6.21 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Vanadium Other |
0.604 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
0.575 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
6.8 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
0.205 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
0.118 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
0.12 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0784 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Xylenes (total) Volatile organic compound |
0.0323 ppb | 1800.0 | 10000.0 | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.684 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 Saint Cloud.