ZipCheckup grade for 77303: B.

This ZIP has a few items worth a quick check.

Your top priority: match a filter's certification to the violations (5 health-based violations). Check your ZIP → NSF certified filters

Health Violations Found
B 75

Conroe, TX (77303): 5 Health-Based Violations Recorded for Mapped Water Systems - 75/100

EPA data combined for 17 water systems mapped to this ZIP (largest mapped system: City of Conroe)

Health Violations Found NFIP Claim History

Health-based violation records by water system:

EPA records for the water systems mapped to 77303 in Conroe, TX contain 54 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 5 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 75/100
Water Quality Issues 5 health-based violation records
Lead Risk Below action level Below the reporting limit, 90th percentile, sample period ending 2025-12-31
NFIP Claim History Claim records 201 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 5 health-based violations and 49 non-health-based (since 2021).
  • Lead The reported 90th-percentile lead result is below the laboratory reporting limit, not a measured zero; EPA's health goal for lead is zero.
  • Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
  • Flood 201 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
Contaminant Summary
Health Violations
54 violations 5 health-based 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 Consumer Confidence Report: source date or period is not present in ZipCheckup's accepted source record
B
ZIP-level Home Safety model score: 75 / 100
Home Safety Score higher than 51% of ZIP codes nationwide
17
Water Systems
113,912
People Served
5
Health Violations (since 2021)Median is 0
Surface water
Water Source
Zone 3
County Radon Potential · Low
$232K
Median Home Value19% above state median ($195K)

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Score Breakdown

Overall Home Safety Score: 75/100

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

Required domains

Drinking water
50/100
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 (7) CRITICAL

Your Water System

ZIP code 77303 in Conroe, Texas is mapped to the water system City of Conroe (EPA ID: TX1700001). This system provides water to approximately 113,912 people from surface water sources.

There are 17 community water systems serving this area.

Lead & Copper in Your Water

The EPA requires water systems to monitor lead and copper levels under the Lead and Copper Rule.

Metal Measured Level EPA Action Level Status Sample Date or Period
Copper Action-level exceedance on record 1.3 mg/L Exceeds action level Not present in ZipCheckup accepted source data
How to read the copper row. EPA's reporting schema defines the copper CU90 code as an action-level exceedance (a system's 90th-percentile copper above the 1.3 mg/L action level), so this row reflects an exceedance on record, not a routine measurement. No copper concentration is shown because no verified unit is available for this value. A system with no copper record has not been shown to be clean: the absence of a recorded exceedance is not a measurement.

Water Systems Serving This Area

System Name EPA ID Population Source
City of Conroe TX1700001 113,912 Surface water
Town of Cut and Shoot TX1700592 6,000 Groundwater
Texaba Subdivision TX1700621 590 Groundwater
Domestic Water Company Royal Forest Subd TX1700037 1,667 Groundwater
Emerson Estates TX1700683 1,974 Groundwater

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 Conroe (TX1700001) 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 →

UCMR 5 PFAS monitoring: no reportable detections in available records

Available federal UCMR5 records for water systems mapped to ZIP code 77303 show no PFAS detections among the compounds tested, at the program's reporting levels.

The EPA Fifth Unregulated Contaminant Monitoring Rule (UCMR5) required community and non-transient non-community water systems serving 3,300 or more people to test for 29 PFAS compounds and lithium between 2023 and 2025. Systems with no detections at the federal minimum reporting level had no results at or above that reporting level.

📊 EPA UCMR5 · 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) HIGH
Home & Infrastructure (6) OK
Cost & Community (8) OK

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 Conroe

Based on local data for ZIP 77303, 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 Conroe has 201 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 Texas 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 77303 safe to drink?

EPA SDWIS records 54 violations since 2021 across the water systems mapped to ZIP 77303 (primary system: City of Conroe), including 5 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 77303's water come from?

The recorded water source for City of Conroe, a system mapped to ZIP code 77303, is Surface water. This system serves approximately 113,912 people.

How does Conroe water compare to the national average?

Conroe's Home Safety Score ranks better than 51% of U.S. ZIP codes, and lower than 76% of ZIP codes within Texas.

How can I get my water tested in Conroe?

If City of Conroe 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.

What is the radon risk for 77303?

77303 is mapped to a county in EPA Radon Zone 3 (low county-level radon potential; EPA recommends testing every home), located in Montgomery 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 77303?

FEMA records contain 201 flood insurance claims filed in ZIP code 77303; 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). Conroe, TX (77303): 5 Health-Based Violations Recorded for Mapped Water Systems - 75/100. https://zipcheckup.com/report/77303/
BibTeX 
@misc{zipcheckup-report-77303,
  author = {{ZipCheckup}},
  title  = {{Conroe, TX (77303): 5 Health-Based Violations Recorded for Mapped Water Systems - 75/100}},
  year   = {2026},
  url    = {https://zipcheckup.com/report/77303/}
}

Page version: October 2026.

Nearby ZIP Code Reports

Water quality comparison for ZIP codes near 77303

ZIP Code City, State Distance Grade Violations
77378 Willis, TX 6.3 mi B 53
77305 Conroe, TX 6.3 mi N/A 0
77393 Spring, TX 6.4 mi N/A 0
77301 Conroe, TX 6.6 mi B 14
77304 Conroe, TX 10.0 mi B 17
77318 Willis, TX 10.6 mi B 47
77328 Cleveland, TX 10.8 mi N/A 23
77302 Conroe, TX 10.9 mi B 56
77358 New Waverly, TX 11.6 mi N/A 28
77306 Conroe, TX 11.9 mi B 44

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