ZipCheckup grade for 80446: C.

A mixed picture - some signals here are worth your attention.

Your top priority: test this home for radon. Check your ZIP → EPA radon map

Water Quality Report
C 66

Granby, CO (80446): 2 Violations Recorded for Mapped Water Systems - 66/100

EPA data combined for 5 water systems mapped to this ZIP (largest mapped system: Granby Town of South Service Area)

High County Radon Potential

EPA records for the water systems mapped to 80446 in Granby, CO contain 2 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 0 are marked health-based.

Data source: U.S. Environmental Protection Agency (EPA) SDWIS

Based on EPA Drinking Water FEMA Flood Data U.S. Census CDC Energy Information Admin. USGS Water Data & 9 more federal sources
Latest air quality, EPA records and weather alerts Current data temporarily unavailable
Current EPA violation data unavailable
Water records and current conditions
Current EPA violation data unavailable
Safety Score
C 66/100
Water Quality Concerns 2 non-health-based violation records in EPA data
Lead Risk Below action level 0.002 mg/L, 90th percentile, sample period ending 2023-12-31
NFIP Claim History Claim records 2 claims
Data confidence: High (direct measurement) Medium (sampled / sub-geography) Low (modeled / inferred) Methodology →

At a Glance

  • Water EPA records for water systems mapped to this ZIP show 2 violations (non-health) (since 2021).
  • Lead The reported 90th-percentile lead result of 0.002 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • Radon EPA Zone 1 - highest county-level potential. This is not a home measurement; test before any threshold comparison.
  • Flood 2 cumulative NFIP claim records. Claim evidence is historical, not current map coverage.
Contaminant Summary
Violations on record (not health-based)
2 violations 1 risk identified
Report data assembled: Jul 27, 2026 EPA water-system identity: source date or period is not present in ZipCheckup's accepted source record EPA violation history: more than two update cycles old Lead, copper and UCMR measurements: source date or period is not present in ZipCheckup's accepted source record
C
ZIP-level Home Safety model score: 66 / 100
Bottom 29% of U.S. ZIP codes
5
Water Systems
2,300
People Served
0
Health Violations (since 2021)
Surface water
Water Source
0.002 mg/L
Reported Lead Result
Zone 1
County Radon Potential · High
$506K
Median Home Value18% above state median ($430K)

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Score Breakdown

Overall Home Safety Score: 66/100

This is the published model score. Component and domain values are shown independently; they are not added together on this page.

Canonical components

EPA water compliance
96/100
Observed
PFAS MCL screen
100/100
Observed
EPA radon zone
0/100
Observed
Annual EPA AirData AQI
100/100
Observed

Required domains

Drinking water
98/100
Indoor environment
0/100
Outdoor environment
100/100

Coverage: 4 of 4 components and 3 of 3 domains observed.

Model 4.0.0; series home-safety-v4-cross-vertical.

Safety & Health (6) HIGH

Your Water System

ZIP code 80446 in Granby, Colorado is mapped to the water system Granby Town of South Service Area (EPA ID: CO0125710). This system provides water to approximately 2,300 people from surface water sources.

There are 5 community water systems serving this area.

Water Systems Serving This Area

System Name EPA ID Population Source
Granby Town of South Service Area CO0125710 2,300 Surface water
Grand Lake Town of CO0125322 2,035 Groundwater
Columbine Lake Water Supply District CO0125155 428 Groundwater
Soda Springs Water Authority CO0125718 280 Groundwater
Lake Forest Mutual Wc CO0125466 250 Groundwater

Other Water Quality Reports in Colorado

Nearby Water Quality Reports

Data Sources

This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Granby Town of South Service Area (CO0125710) on EPA.gov.

4 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.

📊 EPA Safe Drinking Water · View source →

Health Risks from Detected Contaminants

Fluoride

Moderate Risk

EPA reference value: 4 mg/L (estándar secundario: 2.0 mg/L)

Tooth & bone damage at high levels

At-risk groups: children aged 8 and younger during tooth development

Treatment options (verify a product is certified to reduce this contaminant): reverse osmosis, activated alumina, distillation · Find a filter →

Learn more about Fluoride in drinking water →

📊 EPA SDWIS + SDWA · View source →
Environmental Hazards (11) MODERATE
Home & Infrastructure (6) OK
Cost & Community (9) HIGH

CPSC product recall notices

These national notices are not matched to this ZIP code or water system.

View all recalls →

📊 CPSC · View source →

Protect Your Home in Granby

Based on local data for ZIP 80446, 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 Granby has 2 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)

Roofing Inspection & Repair

Active weather alerts in Colorado increase the risk of roof damage from hail and high winds. A professional inspection can identify vulnerabilities.

Typical cost: Roof inspection: typically $75–$300; repairs $300–$1,500

Estimate Your Home Insurance Needs

Service 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 80446 safe to drink?

EPA SDWIS records 2 violations since 2021 across the water systems mapped to ZIP 80446 (primary system: Granby Town of South Service Area), including 0 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 80446's water come from?

The recorded water source for Granby Town of South Service Area, a system mapped to ZIP code 80446, is Surface water. This system serves approximately 2,300 people.

How does Granby water compare to the national average?

Granby's Home Safety Score ranks lower than 71% of U.S. ZIP codes, and at or above 63% within Colorado.

How can I get my water tested in Granby?

If Granby Town of South Service Area 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 80446 tap water?

The Lead and Copper Rule record selected for 80446 reports a 90th-percentile lead result of 0.002 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 80446?

80446 is mapped to a county in EPA Radon Zone 1 (high county-level radon potential; EPA recommends testing every home), located in Grand County. EPA radon zones range from Zone 1 (highest county-level potential) to Zone 3 (lowest). Testing your home is recommended regardless of zone.

What does the NFIP claim history show for ZIP 80446?

FEMA records contain 2 flood insurance claims filed in ZIP code 80446; 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

APA ZipCheckup. (2026). Granby, CO (80446): 2 Violations Recorded for Mapped Water Systems - 66/100. https://zipcheckup.com/report/80446/
BibTeX 
@misc{zipcheckup-report-80446,
  author = {{ZipCheckup}},
  title  = {{Granby, CO (80446): 2 Violations Recorded for Mapped Water Systems - 66/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/80446/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 80446

ZIP Code City, State Distance Grade Violations
80478 Tabernash, CO 7.4 mi N/A 1
80451 Hot Sulphur Springs, CO 7.4 mi N/A 1
80442 Fraser, CO 10.7 mi N/A 2
80447 Grand Lake, CO 11.3 mi N/A 1
80468 Parshall, CO 12.0 mi N/A 0
80482 Winter Park, CO 14.6 mi C 1
80481 Ward, CO 22.2 mi N/A 0
80510 Allenspark, CO 24.0 mi N/A 0
80459 Kremmling, CO 24.7 mi N/A 0
80466 Nederland, CO 24.7 mi C 1

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