COUNTY REPORT TX

Collin County, Texas

32 ZIP codes · Avg score 93/100 · Grade A

ZipCheckup grade for Collin County: A.

Checked records flag no major concern; missing data is unknown.

Collin County: upper grades, 32 ZIPs.

How Collin County Compares

Collin County93/100
Texas avg83/100
National avg73/100

How Collin County Compares

A
County Grade
93/100
Avg Safety Score
32
ZIP Codes
45
Water Systems

Collin County scores 10 points above the Texas state average (83/100) and 20 points above the national average (73/100).

Data: ZipCheckup Home Safety Score model 4.0.0; EPA SDWIS, UCMR 5, EPA radon zones, EPA AirData

A
County Grade
93
Avg Safety Score
32
ZIP Codes
Best ZIP: 75013 (100/100)
Lowest ZIP: 75078 (81/100)
$422K
Median Home Value
$613
Avg Remediation (0.15% of home value)

ZIP Code Risk Map

Water Quality Map: Collin County, Texas

Each dot represents a ZIP code. Color indicates water quality grade. Tap a dot for details.

A B C D F

Key Risk Factors

Health risk index: 10.3 (asthma 8.9%, diabetes 9.5%)

Modeled additional annual cost estimate per homeowner: $558, largest modeled factor: Flood

12% of homes built before 1980 (lead paint was banned for residential use in 1978)

County Health Indicators vs National Average

Asthma 8.9% (national: 8.9%)
Diabetes 9.5% (national: 10.5%)
Obesity 32.3% (national: 32.4%)

Black markers indicate national averages. Source: CDC PLACES, Census ACS.

Infrastructure Overview

2001
Median Build Year
12%
Pre-1980 Housing
23/100
Infrastructure Stress Indicator
0%
ZIPs with High Infrastructure Stress
Low
Lead Pipe Risk

Modeled area-level indicator, not a failure probability. Sources: Census ACS housing age, EPA DWINSA infrastructure needs, EPA SDWIS violations, and EPA lead indicators.

Compound Risk Breakdown

Estimated additional annual cost per homeowner: $558

Flood $554/yr
Energy Code Gap $100/yr
Wildfire $19/yr

Bar widths proportional to share of total annual risk cost. Source: compound risk model (FEMA, EPA, USGS).

Housing Age Distribution

381,147 housing units in Collin County

Pre-1940 1%
1940–1959 2%
1960–1979 9%
1980–1999 33%
2000+ 56%

Source: U.S. Census Bureau ACS B25034 (Year Structure Built).

Water Safety Affordability

How much it costs to fix water issues relative to home values in Collin County

$422K
Median Home Value
$613
Est. Remediation Cost
0.1%
of Home Value
Remediation as % of home value low burden

Modeled remediation costs in Collin County can be compared with the median property value; actual costs vary by property.

Remediation includes water filtration, lead abatement, radon mitigation, and flood protection where applicable. Source: Census ACS, EPA SDWIS.

Health Outcomes vs National Average

CDC PLACES data for Collin County residents

Asthma 8.9% (US avg: 8.9%)
Diabetes 9.5% (US avg: 11%)
Obesity 32.3% (US avg: 32.4%)

Black markers = national averages. Red = above national avg. Green = below. Source: CDC PLACES, Census ACS.

Water systems mapped to Collin County ZIP codes

8 community water systems mapped to Collin County ZIP codes; EPA may list more systems serving the county.

Show all 8 water systems

45 water systems mapped to Collin County ZIP codes in our data; EPA may list more systems serving the county.

Systems with the most violations in Collin County

5 water systems with violations in EPA records.

All ZIP Codes in Collin County

32 ZIP codes tracked in Collin County.

# ZIP Code City Safety Score Grade Violations Home Value
1 75013 Allen 100 A 0 $561K
2 75023 Plano 100 A 0 $386K
3 75024 Plano 100 A 1 $566K
4 75025 Plano 100 A 0 $467K
5 75034 Frisco 100 A 1 $680K
6 75035 Frisco 100 A 1 $562K
7 75070 Mckinney 100 A 1 $429K
8 75074 Plano 100 A 0 $347K
9 75075 Plano 100 A 0 $390K
10 75093 Plano 100 A 0 $623K
11 75094 Plano 99 A 3 $496K
12 75164 Josephine 98 A 2 $229K
13 75069 Mckinney 97 A 8 $414K
14 75173 Nevada 95 A 9 (1 health) $322K
15 75033 Frisco 93 A 9 $607K
16 75166 Lavon 92 A 12 (1 health) $385K
17 75002 Allen 89 A 14 $404K
18 75454 Melissa 89 A 19 (2 health) $422K
19 75009 Celina 88 A 18 (2 health) $471K
20 75071 Mckinney 88 A 20 (2 health) $449K
21 75098 Wylie 86 A 24 $363K
22 75252 Dallas 83 B 0 $530K
23 75407 Princeton 83 B 34 (4 health) $308K
24 75409 Anna 83 B 59 (6 health) $317K
25 75424 Blue Ridge 83 B 77 (4 health) $303K
26 75442 Farmersville 83 B 39 (4 health) $330K
27 75078 Prosper 81 B 6 $651K
28 75026 Plano — — —
29 75086 Plano — — —
30 75097 Weston — — —
31 75121 Copeville — — —
32 75485 Westminster — — —

Recommended Buyer Guides for Collin County

When no specific signal shows up in the records, the list falls back to general water testing and filtration guides rather than staying empty.

Overview

Collin County in Texas covers 32 tracked ZIP records with an average Home Safety Score of A (93/100) across 27 scored records.

20 of 27 ZIP codes with a reported violation count in the available EPA record have recorded EPA violations. 8 health-based violations appear in the available health breakdown.

← Back to Texas Home Safety Profile

Data Sources

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

Frequently Asked Questions

Is water safe in Collin County?
Collin County receives an average Home Safety grade of A from its scored ZIP records (32 ZIP codes tracked); this is a composite index, not a tap-water test.
How many water systems serve Collin County?
We map 45 public water systems to 32 ZIP codes in our data for Collin County. EPA may list more systems serving the county, so this is not a full count.
What is the biggest environmental risk in Collin County?
In ZipCheckup's cost model, the factor with the largest estimated average annual cost in Collin County is flood. Across all modeled risk factors, the estimated average additional annual cost is $558 per homeowner; actual costs vary by home.
How old are homes in Collin County?
The median home build year in Collin County is 2001. 12% of homes were built before 1980; homes built before 1978 may contain lead-based paint, and older homes may have older plumbing materials.
How does Collin County compare to Texas?
Collin County has an average Home Safety Score of 93/100 under model 4.0.0, which is at or above the Texas state average of 83/100.

How to cite this page

APA ZipCheckup. (2026). Collin County, TX: HSS 93/100; PFAS Found in Water. https://zipcheckup.com/county/texas/collin/
BibTeX
@misc{zipcheckup-county-texas-collin,
  author = {{ZipCheckup}},
  title  = {{Collin County, TX: HSS 93/100; PFAS Found in Water}},
  year   = {2026},
  url    = {https://zipcheckup.com/county/texas/collin/}
}

Page version: October 2026.

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