Thief River Falls, MN: PFAS Detected in Mapped Water Systems
EPA data for Thief River Falls
Health-based violation records by water system:
EPA records for the water systems mapped to 56701 in Thief River Falls, MN contain 2 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 1 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 1 health-based violation and 1 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.007 mg/L is below the EPA action level, but EPA's health goal for lead is zero; filtration is advisable.
- PFAS PFAS detected in UCMR5 sampling; see the PFAS section for each compound, compared with the federal PFAS MCL where one exists.
- Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
- Flood 22 cumulative NFIP claim records. Check the current FEMA map for a specific address.
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High-priority alerts for 56701 in Thief River Falls total 1, with zero critical-level findings documented.
Score Breakdown
Overall Home Safety Score: Score unavailable
Required evidence is missing. Missing values remain unknown and are not imputed or renormalized.
Canonical components
Required domains
Coverage: 3 of 4 components and 2 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (8) CRITICAL
Your Water System
ZIP code 56701 in Thief River Falls, Minnesota is mapped to the water system Thief River Falls (EPA ID: MN1570003). This system provides water to approximately 8,701 people from surface water sources.
Other Water Quality Reports in Minnesota
- 55001 (Afton)
- 55002 (Almelund)
- 55003 (Bayport) - 2 violations recorded for mapped water systems
- 55005 (Bethel)
- 55006 (Braham)
- 55007 (Brook Park)
- 55008 (Cambridge)
- 55009 (Cannon Falls)
- 55010 (Castle Rock)
- 55011 (Cedar) - 3 violations recorded for mapped water systems
- 55012 (Center City) - 1 violation recorded for mapped water systems
- 55013 (Chisago City) - 3 violations recorded for mapped water systems
- 55014 (Circle Pines) - 5 violations recorded for mapped water systems
- 55016 (Cottage Grove)
- 55017 (Dalbo)
- 55018 (Dennison)
- 55019 (Dundas) - 2 violations recorded for mapped water systems
- 55020 (Elko New Market)
- 55021 (Faribault) - 3 violations recorded for mapped water systems
- 55024 (Farmington)
Nearby Water Quality Reports
- 56754 (Saint Hilaire) - 8 mi
- 56738 (Newfolden) - 12 mi
- 56760 (Viking) - 16 mi
- 56750 (Red Lake Falls) - 17 mi
- 56748 (Plummer) - 18 mi
- 56725 (Goodridge) - 21 mi
- 56737 (Middle River) - 23 mi
- 56715 (Brooks) - 23 mi
- 56722 (Euclid) - 23 mi
- 56742 (Oklee) - 25 mi
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Thief River Falls (MN1570003) on EPA.gov.
5 of the top compounds applied across the surrounding county in USGS pesticide-use estimates appear on EPA drinking-water monitoring lists. See the agricultural pesticide-use section.
PFAS Contamination Detected
PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 56701.
Detected compounds: PFBA.
Highest measured level: 0.012 µg/L
Reverse osmosis (RO) and activated carbon block filters can reduce PFAS at the tap. Certifications list the compounds covered: an NSF/ANSI 53 or 58 claim for PFOA/PFOS does not cover every PFAS, so check that the product lists the compounds detected here.
Environmental Hazards (11) HIGH
Home & Infrastructure (7) OK
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Thief River Falls
Based on local data for ZIP 56701, these services may benefit homeowners in your area.
Based on local data for your area. Use the tools below to explore your options.
Home & Flood Insurance
The ZIP code for this report in Thief River Falls has 22 FEMA flood claims on record. Standard homeowner policies don't cover flood damage - make sure you're protected.
Typical cost: Flood insurance: premiums vary by property and flood zone; request a quote
Check Your Flood Zone (Free)FEMA flood map lookup - see if your property is in a flood zone
Free tip: Check your FEMA flood zone at msc.fema.gov (free lookup)
Gutter Installation & Repair
The median home in 56701 was built around 1977. Aging gutters can cause foundation damage, basement flooding, and mold - a professional assessment can prevent costly repairs.
Typical cost: Gutter installation: typically $1,000–$2,500 for a standard home
Estimate Your Home Maintenance CostsWindow Replacement
The median build year of homes in Thief River Falls is 1977; check the age and condition of your own windows. ENERGY STAR windows can save $101–$583/year on energy bills.
Typical cost: Window replacement: typically $300–$800 per window installed
Estimate Your Home Maintenance CostsRoofing Inspection & Repair
Homes built around 1977 may be on their second or third roof. A professional inspection can catch damage before leaks start.
Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500
Estimate Your Home Insurance NeedsService recommendations are based on public data for this ZIP code (FEMA, Census ACS, NWS). Actual needs vary by property. By calling, your information will be shared with an independent service provider. ZipCheckup may receive compensation. Cost estimates are approximate and vary by property, condition, and contractor.
Frequently Asked Questions
Is the tap water in 56701 safe to drink?
EPA SDWIS records 2 violations since 2021 across the water systems mapped to ZIP 56701 (primary system: Thief River Falls), including 1 health-based. The violation table above shows which system each record belongs to. ZipCheckup last updated this page in July 2026. The federal source release date is unavailable, so that month is not presented as source currency.
Where does 56701's water come from?
The recorded water source for Thief River Falls, a system mapped to ZIP code 56701, is Surface water. This system serves approximately 8,701 people.
How can I get my water tested in Thief River Falls?
If Thief River Falls supplies your home, contact it for its Consumer Confidence Report; otherwise contact the water utility that serves your address, or hire a certified lab for independent home water testing. The EPA recommends annual testing if you use a private well.
Is lead a concern in 56701 tap water?
The Lead and Copper Rule record selected for 56701 reports a 90th-percentile lead result of 0.007 mg/L for a water system mapped to this ZIP (record date 2023-12-31). The EPA action level is 0.015 mg/L. This result is below the EPA action level; it does not show the lead level in each home.
What is the radon risk for 56701?
56701 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Pennington County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.
Are there PFAS (forever chemicals) in 56701's water?
Yes, PFAS have been detected in samples from water systems mapped to 56701. Reverse osmosis and activated carbon filters certified to NSF/ANSI 53 or 58 specifically for PFOA/PFOS reduction can reduce PFAS.
What does the NFIP claim history show for ZIP 56701?
FEMA records contain 22 flood insurance claims filed in ZIP code 56701; the recorded rated-zone value (the most frequent one if there are several claims) is X, which is claims evidence and may differ from the current FEMA map zone for a property. Claim records do not establish current property risk. Review FEMA's map for the specific property.
How to cite this page
ZipCheckup. (2026). Thief River Falls, MN: PFAS Detected in Mapped Water Systems. https://zipcheckup.com/report/56701/
@misc{zipcheckup-report-56701,
author = {{ZipCheckup}},
title = {{Thief River Falls, MN: PFAS Detected in Mapped Water Systems}},
year = {2026},
url = {https://zipcheckup.com/report/56701/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 56701
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 56754 | Saint Hilaire, MN | 7.7 mi | N/A | 0 |
| 56738 | Newfolden, MN | 12.3 mi | N/A | 0 |
| 56760 | Viking, MN | 15.7 mi | N/A | 0 |
| 56750 | Red Lake Falls, MN | 16.8 mi | N/A | 0 |
| 56748 | Plummer, MN | 17.5 mi | N/A | 0 |
| 56725 | Goodridge, MN | 21.2 mi | N/A | 0 |
| 56737 | Middle River, MN | 22.5 mi | N/A | 0 |
| 56715 | Brooks, MN | 22.6 mi | N/A | 0 |
| 56722 | Euclid, MN | 23.3 mi | N/A | 0 |
| 56742 | Oklee, MN | 24.9 mi | N/A | 0 |
Nearby ZIP Code Reports
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