Tap Water Quality Report
Tap water quality in GRAND FORKS, North Dakota
Tap water in GRAND FORKS, North Dakota receives a grade of C (79/100) from TapWaterSafety.org. It's served by GRAND FORKS REGIONAL WTP. The most significant water quality concerns are: 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 GRAND FORKS's tap water
Top water quality concerns identified by the EPA and Environmental Working Group across the utility serving GRAND FORKS.
Haloacetic acids (HAA9) significantly above health guideline
Moderate concernHaloacetic acids (HAA9) detected at 26.9 ppb, 449x above the EWG health guideline of 0.06 ppb.
Haloacetic acids (HAA5) significantly above health guideline
Moderate concernHaloacetic acids (HAA5) detected at 14.5 ppb, 145x above the EWG health guideline of 0.1 ppb.
Total trihalomethanes (TTHMs) significantly above health guideline
Moderate concernTotal trihalomethanes (TTHMs) detected at 17.2 ppb, 115x above the EWG health guideline of 0.15 ppb.
EPA compliance record
Official U.S. EPA records for GRAND FORKS REGIONAL WTP (system ID ND1800410) for the last 3 years. Checked 2026-10-07.
Source: U.S. EPA Enforcement and Compliance History Online (ECHO), from the Safe Drinking Water Information System. See EPA's full report.
Recommended filters for GRAND FORKS
Filters matched to the specific contaminants in GRAND FORKS's water supply.
Carbon filter certified for VOCs (NSF/ANSI 53)
$180-$599Activated carbon is effective for disinfection byproducts. Look for NSF/ANSI 53 VOC reduction.
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 GRAND FORKS'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 |
26.9 ppb | 0.06 | — | — | — | — | — | 449× over |
| Haloacetic acids (HAA5) Disinfection byproduct |
14.5 ppb | 0.1 | 60.0 | 60 | — | — | — | 145× over |
| Total trihalomethanes (TTHMs) Disinfection byproduct |
17.2 ppb | 0.15 | 80.0 | 100 | — | — | — | 115× over |
| Dichloroacetic acid Disinfection byproduct |
11.2 ppb | 0.2 | — | — | — | — | — | 56× over |
| Chloroform Disinfection byproduct |
14.9 ppb | 0.4 | — | — | — | — | — | 37× over |
| Bromodichloromethane Disinfection byproduct |
1.93 ppb | 0.06 | — | — | — | — | — | 32× over |
| Chromium (hexavalent) Heavy metal |
0.381 ppb | 0.02 | — | — | — | — | — | 19× over |
| Trichloroacetic acid Disinfection byproduct |
0.89 ppb | 0.1 | — | — | — | — | — | 8.9× over |
| Bromate Disinfection byproduct |
0.569 ppb | 0.1 | 10.0 | 10 | 10 | 0.1 | — | 5.7× over |
| Dibromochloromethane Disinfection byproduct |
0.346 ppb | 0.1 | — | — | — | — | — | 3.5× over |
| Nitrate and nitrite Inorganic |
0.483 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | 3.4× over |
| Dibromoacetic acid Disinfection byproduct |
0.0571 ppb | 0.03 | — | — | — | — | — | 1.9× over |
| Nitrate Inorganic |
0.085 ppm | 0.14 | 10.0 | 11.3 | 11.3 | 10 | — | Below guideline |
| Atrazine Pesticide/Herbicide |
0.021 ppb | 0.1 | 3.0 | 0.1 | 100 | 0.15 | — | Below guideline |
| Vanadium Other |
0.913 ppb | 21.0 | — | — | — | — | — | Below guideline |
| Monochloroacetic acid Disinfection byproduct |
2.14 ppb | 53.0 | — | — | — | — | — | Below guideline |
| Molybdenum Other |
1.21 ppb | 40.0 | — | — | — | — | — | Below guideline |
| Manganese Heavy metal |
1.55 ppb | 100.0 | — | 50 | 80 | — | — | Below guideline |
| Monobromoacetic acid Disinfection byproduct |
0.242 ppb | 25.0 | — | — | — | — | — | Below guideline |
| Perfluorobutanoic Acid (PFBA) PFAS |
8.27 ppt | 1000.0 | — | — | — | — | — | Below guideline |
| Strontium Radiological |
0.0796 ppb | 1500.0 | — | — | — | — | — | Below guideline |
| Bromide Other |
22.5 ppb | — | — | — | — | — | — | Below guideline |
| Lithium Other |
16.3 ppb | — | — | — | — | — | — | Below guideline |
| Nitrite Inorganic |
0.014 ppm | — | 1.0 | — | — | — | — | 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 GRAND FORKS REGIONAL WTP.