Water Quality Report · Updated May 12, 2026
Maple Grove
Maple Grove delivers tap water graded D (56/100) by TapWaterSafety.org. The utility serves approximately 82,000 residents in Maple Grove, Minnesota using groundwater. 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. For questions, the utility can be reached at 7634946000.
Is Maple Grove tap water safe to drink?
Maple Grove delivers tap water that earns a grade of D (56/100) from TapWaterSafety.org — a below-average rating, with multiple concerns including pfas contamination.
The utility serves 82,000 residents in Maple Grove, drawing from groundwater.
Public testing data identifies 12 contaminants in this water above EWG's health-based guidelines, including: Perfluorohexane sulfonate (PFHXS), Haloacetic acids (HAA9), Total trihalomethanes (TTHMs), Dibromoacetic acid, Bromodichloromethane, Dibromochloromethane, Haloacetic acids (HAA5), Perfluorooctanoic acid (PFOA), Bromoform, Chloroform, Perfluorooctane sulfonate (PFOS), Dichloroacetic acid. For most residents, a properly certified home filter at the kitchen tap is the most cost-effective way to reduce exposure to whatever's in your water. See our filter recommendations below, matched specifically to this utility's contaminant profile.
Quick actions for Maple Grove residents
Top concerns in this water
Based on the most recent EPA and EWG data, these are the most significant water quality issues for 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.
Contact Maple Grove
Reach the utility directly for service issues, water quality concerns, or to request your Consumer Confidence Report.
General Contact
Treatment Plant
Recommended water filters for Maple Grove
Filters matched to the specific contaminants in this 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.
Score breakdown
This utility's overall score of 56/100 breaks down across five weighted components. Read the full methodology →
Contaminants detected — international standards comparison
Every contaminant detected, compared side-by-side against US EPA legal limits, the EU Drinking Water Directive (2020/2184), WHO Guidelines, and California's Public Health Goal (the strictest US benchmark). 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 (4th ed.), California OEHHA PHGs, EWG Tap Water Database.
Maple Grove service area
This water system serves 1 community in Hennepin County, Minnesota. Click any city for its dedicated tap water quality page.
Find the right filter for Maple Grove water
Browse filter categories by water-quality concern. Each option below is NSF-certified for the matched contaminant type.