ZipCheckup grade for 77318: B.
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Willis, TX (77318): 4 Health-Based Violations Recorded for Mapped Water Systems - 80/100
EPA data combined for 17 water systems mapped to this ZIP (largest mapped system: Point Aquarius Municipal Utility District)
Health-based violation records by water system:
- City of Willis (2)
- TX1700628 (1)
- TX1700661 (1)
EPA records for the water systems mapped to 77318 in Willis, TX contain 47 recorded violations for inclusive record years 2021 through 2026, all mapped systems combined; 4 are marked health-based.
Data source: U.S. Environmental Protection Agency (EPA) SDWIS
At a Glance
- Water EPA records for water systems mapped to this ZIP show 4 health-based violations and 43 non-health-based (since 2021).
- Lead The reported 90th-percentile lead result of 0.0005 mg/L is below the EPA action level for water systems; EPA's health goal for lead is zero.
- Radon EPA Zone 3 - county-level radon potential, not evidence of a low home result.
- Flood 189 cumulative NFIP claim records. This historical count is not a current property-risk verdict.
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Score Breakdown
Overall Home Safety Score: 80/100
This is the published model score. Component and domain values are shown independently; they are not added together on this page.
Canonical components
Required domains
Coverage: 4 of 4 components and 3 of 3 domains observed.
Model 4.0.0; series home-safety-v4-cross-vertical.
Safety & Health (6) CRITICAL
Your Water System
ZIP code 77318 in Willis, Texas is mapped to the water system Point Aquarius Municipal Utility District (EPA ID: TX1700060). This system provides water to approximately 3,228 people from groundwater sources.
There are 17 community water systems serving this area.
Water Systems Serving This Area
| System Name | EPA ID | Population | Source |
|---|---|---|---|
| Point Aquarius Municipal Utility District | TX1700060 | 3,228 | Groundwater |
| Montgomery County Utility District 2 | TX1700115 | 3,381 | Groundwater |
| Lake Conroe Hills Municipal Utility District | TX1700140 | 2,058 | Groundwater |
| Walnut Cove Water Supply Corporation | TX1700389 | 2,076 | Groundwater |
| City of Conroe | TX1700001 | 113,912 | Surface water |
Other Water Quality Reports in Texas
- 73301 (Austin)
- 73344 (Austin)
- 73960 (Texhoma)
- 75001 (Addison) - 2 violations recorded for mapped water systems
- 75002 (Allen) - 14 violations recorded for mapped water systems
- 75006 (Carrollton) - 2 violations recorded for mapped water systems
- 75007 (Carrollton) - 1 violation recorded for mapped water systems
- 75009 (Celina) - 18 violations recorded for mapped water systems
- 75010 (Carrollton) - 1 violation recorded for mapped water systems
- 75011 (Carrollton)
- 75013 (Allen)
- 75014 (Irving)
- 75015 (Irving)
- 75016 (Irving)
- 75017 (Irving)
- 75019 (Coppell) - 5 violations recorded for mapped water systems
- 75020 (Denison) - 38 violations recorded for mapped water systems
- 75021 (Denison) - 30 violations recorded for mapped water systems
- 75022 (Flower Mound) - 18 violations recorded for mapped water systems
- 75023 (Plano)
Nearby Water Quality Reports
- 77378 (Willis) - 5 mi - 53 violations recorded for mapped water systems
- 77358 (New Waverly) - 8 mi - 28 violations recorded for mapped water systems
- 77304 (Conroe) - 8 mi - 17 violations recorded for mapped water systems
- 77393 (Spring) - 9 mi
- 77356 (Montgomery) - 10 mi - 43 violations recorded for mapped water systems
- 77301 (Conroe) - 10 mi - 14 violations recorded for mapped water systems
- 77316 (Montgomery) - 10 mi - 156 violations recorded for mapped water systems
- 77303 (Conroe) - 11 mi - 54 violations recorded for mapped water systems
- 77305 (Conroe) - 14 mi
- 77340 (Huntsville) - 14 mi - 44 violations recorded for mapped water systems
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Point Aquarius Municipal Utility District (TX1700060) 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.
UCMR 5 PFAS monitoring: no reportable detections in available records
Available federal UCMR5 records for water systems mapped to ZIP code 77318 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.
Health Risks from Detected Contaminants
Fluoride
Moderate RiskEPA 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 →
Environmental Hazards (11) HIGH
Home & Infrastructure (6) OK
Cost & Community (9) HIGH
CPSC product recall notices
These national notices are not matched to this ZIP code or water system.
Protect Your Home in Willis
Based on local data for ZIP 77318, 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 Willis has 189 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 NeedsService 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 77318 safe to drink?
EPA SDWIS records 47 violations since 2021 across the water systems mapped to ZIP 77318 (primary system: Point Aquarius Municipal Utility District), including 4 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 77318's water come from?
The recorded water source for Point Aquarius Municipal Utility District, a system mapped to ZIP code 77318, is Groundwater. This system serves approximately 3,228 people.
How can I get my water tested in Willis?
If Point Aquarius Municipal Utility District 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 77318 tap water?
The Lead and Copper Rule record selected for 77318 reports a 90th-percentile lead result of 0.0005 mg/L for a water system mapped to this ZIP (record date 2025-12-31). 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 77318?
77318 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 77318?
FEMA records contain 189 flood insurance claims filed in ZIP code 77318; 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
ZipCheckup. (2026). Willis, TX (77318): 4 Health-Based Violations Recorded for Mapped Water Systems - 80/100. https://zipcheckup.com/report/77318/
@misc{zipcheckup-report-77318,
author = {{ZipCheckup}},
title = {{Willis, TX (77318): 4 Health-Based Violations Recorded for Mapped Water Systems - 80/100}},
year = {2026},
url = {https://zipcheckup.com/report/77318/}
}
Page version: October 2026.
Nearby ZIP Code Reports
Water quality comparison for ZIP codes near 77318
| ZIP Code | City, State | Distance | Grade | Violations |
|---|---|---|---|---|
| 77378 | Willis, TX | 5.3 mi | B | 53 |
| 77358 | New Waverly, TX | 8.3 mi | N/A | 28 |
| 77304 | Conroe, TX | 8.3 mi | B | 17 |
| 77393 | Spring, TX | 9.0 mi | N/A | 0 |
| 77356 | Montgomery, TX | 10.1 mi | B | 43 |
| 77301 | Conroe, TX | 10.3 mi | B | 14 |
| 77316 | Montgomery, TX | 10.4 mi | C | 156 |
| 77303 | Conroe, TX | 10.6 mi | B | 54 |
| 77305 | Conroe, TX | 14.0 mi | N/A | 0 |
| 77340 | Huntsville, TX | 14.2 mi | N/A | 44 |
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