CITY REPORT CO

Frederick, CO: 5 Violations - Home Safety 56/100

1 ZIP code · 2 water systems · Updated

ZipCheckup grade for Frederick: C.

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

Available records for Frederick give it a middle-tier grade in CO; water systems can differ, so check the one that serves your home.

How Frederick Compares

Frederick56/100
Colorado avg59/100
National avg73/100

Data: EPA SDWIS

1
ZIP Codes
2
Water Systems
1
ZIPs Linked to Systems with Violations
C · 56
Avg Safety Score
Zone 1
County Radon Potential (High)
$449K
Median Home Value

Key Facts for Frederick Residents

  • Your city's water systems recorded 5 violations since 2021.
  • Average of reported 90th-percentile lead results: 0.0029 mg/L.
  • Homes built before 1986: 19% - older plumbing may contain lead solder.
  • Health risk index (ZipCheckup composite of CDC data): 11.23.

Frederick's Water Providers

Because each listed system has its own federal record, violations at one of the 2 shown below do not apply to the others among the 2 tied to Frederick, CO.

Overview

We track home safety data for 1 ZIP code in Frederick, Colorado (population ~6,097), covering 2 community water systems serving approximately 24,835 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. The available record reports no health-based violations for this measured scope.

Home Safety Score

Average Home Safety Score for Frederick: C (56/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor What It Measures
Water Quality EPA violations and compliance history
PFAS MCL Screen UCMR 5 testing against the covered federal MCLs
Radon Risk EPA radon zone classification
Annual AQI EPA AirData county-year median with at least 90 observed days

Water Sources

Frederick water systems draw from: Surface water.

Lead & Copper

  • Average of reported 90th-percentile lead results: 0.0029 mg/L (EPA action level: 0.015 mg/L)
  • 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

1 of 1 ZIP records with known zones is in EPA Radon Zone 1.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Top Contaminants

Contaminant Category Violations ZIPs Affected
Public Notice Rule Reporting 4 1
Haloacetic Acids (HAA5) Disinfection Byproducts 2 1
Total Trihalomethanes (TTHM) Disinfection Byproducts 2 1
Lead and Copper Rule Treatment Technique 2 1

Areas with Most Violations

ZIP Code Safety Score Violations Health-Based System
80530 C 5 0 Frederick Town of

All ZIP Codes in Frederick

  • 80530 [C] - 5 violations

Data Sources

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Frederick Community Health Snapshot

10.7%
Asthma (US: 9.8%)
9.5%
Diabetes (US: 10.4%)
17.2%
Poor Mental Health (US: 14.8%)

Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.

Compared to National Average

Asthma 10.7% ↑
Diabetes 9.5% ↓
Mental Health 17.2% ↑

Vertical line = national average. ■ Above national · ■ Below national

What's in Frederick's Water?

Public Notice Rule 4 violations
Reporting
Haloacetic Acids (HAA5) 2 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.06 mg/L
Increased cancer risk with long-term exposure above the MCL
Total Trihalomethanes (TTHM) 2 violations
Disinfection Byproducts · EPA regulatory level for the contaminant named above: 0.08 mg/L
Increased cancer risk with long-term exposure above the MCL

Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.

Frederick Infrastructure Age

2005
Median Build Year
19%
Built Before 1986
12%
Built Before 1970
PEX or Copper
Likely Pipe Material

Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.

Source: U.S. Census Bureau American Community Survey (ACS).

Housing Age Profile

If your home in Frederick predates 1986, testing the tap is the direct way to learn about lead; the median build year of 2005 cannot answer that for you.

2005
Median Year Built
19%
Pre-1986 (lead solder era; lead paint banned 1978)
12%
Pre-1970 (Lead Pipes Risk)
Pre-1970 (12%) 1970–1986 (7%) Post-1986 (81%)

Most homes in Frederick were built after 1986; lead exposure at a tap still depends on its service line and plumbing. Older homes should still be tested.

Source: U.S. Census Bureau ACS B25034.

Frederick: Lead Risk & Vulnerable Populations

19%
Homes Built Before 1986
0.0029
mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

A tap test is the direct way to learn the lead level in a given Frederick home; 19% of local housing predates 1986.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.

Frederick: NFIP Claim Records and Water-Quality Context

12
Total FEMA Flood Claims
$5,433
Avg Reported Sum With Payment Data
0%
A/V Share of Claim-Record ZIPs

Historical NFIP data for Frederick contains 12 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $5,433. Among ZIP codes with claim records, 0% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.

What You Can Do in Frederick

  1. Test your water at home. City-level data shows averages - your tap may differ. Check the certification, price and turnaround time of any water test kit or lab service.
  2. Install a certified water filter. For Public Notice Rule, listed in the water-quality records for Frederick: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
  3. Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.

Frequently Asked Questions

What does the Home Safety Score mean for Frederick, CO?
Frederick has an average Home Safety Score of 56/100 (Grade C) under ZipCheckup model 4.0.0, an area-level model that draws on EPA water compliance records, PFAS screening, EPA radon zones, and annual EPA air quality data; see the methodology page for how inputs and coverage are handled. 5 violations appear in EPA records for water systems mapped to these ZIP codes. Check individual ZIP code reports for component details.
How many violations are on record for water systems serving Frederick?
EPA records list 5 EPA violations for Frederick water systems. These water-system violations are shown for 1 mapped ZIP code.
Does Frederick water have lead?
The average of the reported 90th-percentile lead results across the ZIP codes of Frederick is 0.0029 mg/L. The EPA action level of 0.015 mg/L applies to each water system's own 90th percentile, not to this average. EPA's health goal for lead is zero. Lead levels can vary by home - testing is recommended especially in older properties.
How does Frederick compare to Colorado average?
Frederick has an average Home Safety Score of 56/100, which is below the Colorado state average of 59/100 for the same model series.
How many water systems serve Frederick?
Our records map 2 water systems to 1 ZIP code in Frederick. The related population figure in our data is approximately 6,097 people; it is not a count of people served citywide.
Home → Cities → Colorado → Frederick, CO

How to cite this page

APA ZipCheckup. (2026). Frederick, CO: 5 Violations - Home Safety 56/100. https://zipcheckup.com/cities/co/frederick/
BibTeX
@misc{zipcheckup-cities-co-frederick,
  author = {{ZipCheckup}},
  title  = {{Frederick, CO: 5 Violations - Home Safety 56/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/cities/co/frederick/}
}

Page version: October 2026.

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