Tap Water Quality Report
Tap water quality in Coon Rapids, Minnesota
Tap water in Coon Rapids, Minnesota receives a grade of F (57/100) from TapWaterSafety.org. It's served by Coon Rapids. The most significant water quality concerns are: PFAS contamination; Arsenic 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 Coon Rapids's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving Coon Rapids.
PFAS contamination
Severe concernPerfluorooctane sulfonate (PFOS) detected. PFAS are persistent chemicals linked to cancer and immune effects with no known safe exposure threshold.
Arsenic significantly above health guideline
Moderate concernArsenic detected at 3.42 ppb, 854x above the EWG health guideline of 0.004 ppb.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 24.1 ppb, 402x above the EWG health guideline of 0.06 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 28.7 ppb, 191x above the EWG health guideline of 0.15 ppb.
Recommended filters for Coon Rapids
Filters matched to the specific contaminants in Coon Rapids'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.
Reverse Osmosis
$249-$750Arsenic is most effectively removed by reverse osmosis. Some specialized adsorptive filters also work.
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 Coon Rapids'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 |
|---|---|---|---|---|---|---|---|---|
| Arsenic Heavy metal |
3.42 ppb | 0.004 | 10.0 | 10 | 10 | 0.004 | — | 854× over |
| Haloacetic acids (HAA9) Disinfection byproduct |
24.1 ppb | 0.06 | — | — | — | — | — | 402× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
28.7 ppb | 0.15 | 80.0 | 100 | — | — | — | 191× over |
| Perfluorohexane sulfonate (PFHXS) PFAS |
0.133 ppt | 0.001 | 10.0 | — | — | — | — | 133× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
11.3 ppb | 0.1 | 60.0 | 60 | — | — | — | 113× over |
| Bromodichloromethane Disinfection byproduct |
5.9 ppb | 0.06 | — | — | — | — | — | 98× over |
| Trichloroacetic acid Disinfection byproduct |
6.57 ppb | 0.1 | — | — | — | — | — | 66× over |
| Chloroform Disinfection byproduct |
20.4 ppb | 0.4 | — | — | — | — | — | 51× over |
| Dibromochloromethane Disinfection byproduct |
2.35 ppb | 0.1 | — | — | — | — | — | 23× over |
| Dichloroacetic acid Disinfection byproduct |
4.44 ppb | 0.2 | — | — | — | — | — | 22× over |
| Dibromoacetic acid Disinfection byproduct |
0.325 ppb | 0.03 | — | — | — | — | — | 11× over |
| Radium, combined (-226 and -228) Radiological |
0.47 pCi/L | 0.05 | 5.0 | — | — | — | — | 9.4× over |
| Chromium (hexavalent) Heavy metal |
0.0139 ppb | 0.02 | — | — | — | — | — | Below guideline |
| Nitrate Inorganic |
0.057 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Perfluorooctane sulfonate (PFOS) PFAS |
0.107 ppt | 0.3 | 4.0 | 100 | 100 | 1 | — | Below guideline |
| Molybdenum Other |
2.32 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Barium Heavy metal |
35.6 ppb | 700.0 | 2000.0 | — | 1300 | 2000 | — | Below guideline |
| Manganese Heavy metal |
4.58 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
7.25 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.172 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Perfluorobutane sulfonate (PFBS) PFAS |
0.08 ppt | 2000.0 | — | — | — | — | — | Below guideline |
| Fluoride Inorganic |
0.613 ppm | — | 4.0 | 1.5 | 1.5 | — | — | Below guideline |
| Germanium Other |
0.39 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 Coon Rapids.