Markham, TX Home Safety Data by ZIP
1 ZIP code · 0 water systems · Updated
Data: EPA SDWIS
Markham Water: The Quick Version
- Homes built before 1986: 76% - older plumbing may contain lead solder.
- Estimated remediation: $1,800 per household.
- CDC health risk index: 14.48 - above typical levels.
Overview
We track home safety data for 1 ZIP code in Markham, Texas, covering 0 community water system serving approximately 1,447 people. The EPA snapshots used for this build directly map water systems to 0 of 1 ZIP codes.
EPA water-system violation data is unavailable in the dataset used for this page for the tracked ZIP codes in Markham.
Lead & Copper
- Lead data: not yet available for Markham
- Lead action-level status: not available
Radon Risk
Dominant radon zone: Zone 3 (Low Risk)
All ZIP Codes in Markham
Data Sources
- Water quality: EPA Safe Drinking Water Information System (SDWIS)
- Lead/copper: EPA Lead and Copper Rule sampling data
- Radon: EPA Map of Radon Zones
Reporting periods vary by source. Missing data is shown as unavailable, not as zero.
CDC Health Data for Markham
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
How Old Is Markham's Housing Stock?
With 76% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
When more than half a city's housing predates the 1986 federal ban on lead solder, plumbing-era lead risk becomes a citywide concern rather than an exception. Markham's median build year of 1961 places it squarely in that category.
Over half of homes in Markham were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.
Source: U.S. Census Bureau ACS B25034.
Markham: Remediation Cost in Perspective
The equity impact of remediation in Markham sits at a moderate level - real enough to plan for, within reach for most.
Remediation costs are moderate relative to home values in Markham. The estimated $1,200–$2,500 range is manageable for most homeowners but still worth budgeting for. Home values are 48% below the Texas average.
Protecting Children from Lead in Markham
Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.
Older stock in Markham represents 76% of the inventory, and citywide monitoring runs at or above the federal action level - making an in-home read a standard household-level step.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical Flood-Claim Evidence for Markham
Historical NFIP data for Markham contains 22 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $56,990. 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. The <strong>$1,800</strong> remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.
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.
Deep Dive Reports
Detailed analysis for Markham, TX