Tap Water Quality Report
Tap water quality in Maple Grove, Minnesota
Tap water in Maple Grove, Minnesota receives a grade of F (56/100) from TapWaterSafety.org. It's served by Maple Grove. 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 Maple Grove's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Maple Grove.
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 1.14 ppt, 1144x above the EWG health guideline of 0.001 ppt.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 7.33 ppb, 122x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 13.5 ppb, 90x above the EWG health guideline of 0.15 ppb.
Recommended filters for Maple Grove
Filters matched to the specific contaminants in Maple Grove'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 Maple Grove'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 |
|---|---|---|---|---|---|---|---|---|
| Perfluorohexane sulfonate (PFHXS) PFAS |
1.14 ppt | 0.001 | 10.0 | — | — | — | — | 1144× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
7.33 ppb | 0.06 | — | — | — | — | — | 122× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
13.5 ppb | 0.15 | 80.0 | 100 | — | — | — | 90× over |
| Dibromoacetic acid Disinfection byproduct |
2.47 ppb | 0.03 | — | — | — | — | — | 82× over |
| Bromodichloromethane Disinfection byproduct |
3.83 ppb | 0.06 | — | — | — | — | — | 64× over |
| Dibromochloromethane Disinfection byproduct |
5.23 ppb | 0.1 | — | — | — | — | — | 52× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
3.1 ppb | 0.1 | 60.0 | 60 | — | — | — | 31× over |
| Perfluorooctanoic acid (PFOA) PFAS |
1.18 ppt | 0.09 | 4.0 | 100 | 100 | 0.007 | — | 13× over |
| Bromoform Disinfection byproduct |
2.6 ppb | 0.5 | — | — | — | — | — | 5.2× over |
| Chloroform Disinfection byproduct |
1.87 ppb | 0.4 | — | — | — | — | — | 4.7× over |
| Perfluorooctane sulfonate (PFOS) PFAS |
1.14 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | 3.8× over |
| Dichloroacetic acid Disinfection byproduct |
0.633 ppb | 0.2 | — | — | — | — | — | 3.2× over |
| Trichloroethylene Volatile organic compound |
0.155 ppb | 0.4 | 5.0 | 10 | 20 | 1.7 | — | Below guideline |
| Nitrate Inorganic |
0.0433 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| 1,4-Dioxane Semi-volatile organic compound |
0.09 ppb | 0.35 | — | — | 50 | 1 | — | Below guideline |
| Perfluoropentane sulfonic acid (PFPeS) PFAS |
0.081 ppt | 1.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
4.21 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
14.0 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Vanadium Other |
0.145 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Perfluoropentanoic Acid (PFPeA) PFAS |
0.725 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
1.4 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Perfluorohexanoic Acid (PFHxA) PFAS |
0.389 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.2 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluoroheptanoic acid (PFHPA) PFAS |
0.131 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.692 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Lithium Other |
14.1 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 Maple Grove.