ZipCheckup grade for 77504: B.

This ZIP has a few items worth a quick check.

Your top priority: review your flood insurance coverage. Check your ZIP → FloodSmart

Health Violations Found
B 72

Pasadena, TX (77504): PFAS Detected in Mapped Water Systems - 72/100

EPA data combined for 2 water systems mapped to this ZIP (largest mapped system: City of Pasadena)

Health Violations Found PFAS Detected NFIP Claim History

Health-based violation records by water system:

EPA records for the water systems mapped to 77504 in Pasadena, TX contain 4 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

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
B 72/100
Water Quality PFAS above MCL 1 health-based violation
Lead Risk Below action level 0.0037 mg/L, 90th percentile, sample period ending 2024-12-31
NFIP Claim History Claim records 677 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 1 health-based violation and 3 non-health-based (since 2021).
  • Lead The reported 90th-percentile lead result of 0.0037 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
  • PFAS At least one PFAS result is above an EPA MCL value (UCMR5 sampling; MCL compliance required from 2029).
  • Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
  • Flood 677 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
Contaminant Summary
Health Violations
4 violations 1 health-based PFAS detected
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 Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
B
ZIP-level Home Safety model score: 72 / 100
Bottom 47% of U.S. ZIP codes
2
Water Systems
152,000
People Served
1
Health Violations (since 2021)Median is 0
Surface water
Water Source
0.00372 mg/L
Reported Lead Result1.6× the national median for this measure
Zone 3
County Radon Potential · Low
$208K
Median Home ValueState median: $195K

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Score Breakdown

Overall Home Safety Score: 72/100

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
84/100
Observed
PFAS MCL screen
0/100
Observed
EPA radon zone
100/100
Observed
Annual EPA AirData AQI
75/100
Observed

Required domains

Drinking water
42/100
Indoor environment
100/100
Outdoor environment
75/100

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

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

Safety & Health (8) CRITICAL

Your Water System

ZIP code 77504 in Pasadena, Texas is mapped to the water system City of Pasadena (EPA ID: TX1010293). This system provides water to approximately 152,000 people from surface water sources.

There are 2 community water systems serving this area.

Water Systems Serving This Area

System Name EPA ID Population Source
City of Pasadena TX1010293 152,000 Surface water
City of Houston TX1010013 2,970,543 Surface water

Other Water Quality Reports in Texas

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 City of Pasadena (TX1010293) 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 →

PFAS Contamination Detected

PFAS ("forever chemicals") have been reported in samples from water systems associated with ZIP code 77504. One or more compound results are above the level of a federal PFAS MCL with compliance required from 2029.

Detected compounds: 6:2 FTS, PFBA, PFPeA, PFHxA, PFOS, PFHxS, PFBS, PFHpA.

Highest measured level: 0.0426 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.

📊 EPA UCMR5 · View source →
Environmental Hazards (11) CRITICAL
Home & Infrastructure (6) MODERATE

Possible home maintenance concerns - talk to a local expert.

Call (855) 384-4856

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Cost & Community (8) 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 Pasadena

Based on local data for ZIP 77504, 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 Pasadena has 677 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 77504 was built around 1970. 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 Costs

Window Replacement

The median build year of homes in Pasadena is 1970; 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 Costs

Roofing Inspection & Repair

Homes built around 1970 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 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 77504 safe to drink?

EPA SDWIS records 4 violations since 2021 across the water systems mapped to ZIP 77504 (primary system: City of Pasadena), 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 77504's water come from?

The recorded water source for City of Pasadena, a system mapped to ZIP code 77504, is Surface water. This system serves approximately 152,000 people.

How does Pasadena water compare to the national average?

Pasadena's Home Safety Score ranks lower than 53% of U.S. ZIP codes, and lower than 90% of ZIP codes within Texas.

How can I get my water tested in Pasadena?

If City of Pasadena 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 77504 tap water?

The Lead and Copper Rule record selected for 77504 reports a 90th-percentile lead result of 0.00372 mg/L for a water system mapped to this ZIP (record date 2024-12-31). 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 77504?

77504 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Harris 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 77504's water?

Yes, PFAS have been detected in samples from water systems mapped to 77504. One or more PFAS results are above the level of a federal PFAS MCL with compliance required from 2029. 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 77504?

FEMA records contain 677 flood insurance claims filed in ZIP code 77504; 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. This is a substantial claim history, but claim count is not a count of distinct events or properties. Review FEMA's map for the specific property.

How to cite this page

APA ZipCheckup. (2026). Pasadena, TX (77504): PFAS Detected in Mapped Water Systems - 72/100. https://zipcheckup.com/report/77504/
BibTeX 
@misc{zipcheckup-report-77504,
  author = {{ZipCheckup}},
  title  = {{Pasadena, TX (77504): PFAS Detected in Mapped Water Systems - 72/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/77504/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 77504

ZIP Code City, State Distance Grade Violations
77502 Pasadena, TX 2.1 mi B 5
77034 Houston, TX 2.2 mi A 4
77587 South Houston, TX 2.3 mi B 2
77505 Pasadena, TX 2.5 mi B 5
77501 Pasadena, TX 3.1 mi N/A 0
77503 Pasadena, TX 3.2 mi B 3
77260 Houston, TX 3.4 mi N/A 0
77506 Pasadena, TX 3.6 mi B 3
77089 Houston, TX 4.4 mi B 18
77536 Deer Park, TX 4.6 mi B 3

Contaminants Detected in 77504

Learn more about the contaminants found in your water supply:

Overall safety breakdown

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