Montgomery County Municipal Utility District 18
EPA ID: TX1700546 · 7,608 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Montgomery County Municipal Utility District 18 (TX1700546): no drinking-water violations recorded since 2021. Federal SDWIS data returns no violation records for Montgomery County Municipal Utility District 18, the supplier serving 7,608 residents - a statement about the EPA file rather than a measurement of contaminant levels in the water.
Data: EPA SDWIS
Service Area Map
Coverage area for Montgomery County Municipal Utility District 18 Source: EPA SDWIS service area boundaries.
Service area boundary - average Home Safety grade of mapped ZIPs: B
Demographics of ZIP Codes Served
The ZIP codes associated with Montgomery County Municipal Utility District 18 have a median household income of $113,750 and about 31,069 residents live in those ZIP codes (Census; not the number of people this system supplies).
💧 Where Does Your Water Come From?
Montgomery County Municipal Utility District 18's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Texas
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Montgomery County Municipal Utility District 18 (EPA ID: TX1700546) is a community water system in Texas that serves approximately 7,608 people from groundwater sources.
This system serves ZIP code 77356 in Montgomery.
ZIP-Area Home Safety Context: B (77/100)
This is the average Home Safety Score for 1 of 1 service-area ZIP codes with all required score domains observed. It is not a grade for the water utility.
Model 4.0.0 uses SDWIS identity plus accepted ECHO SDWA lifecycle-based water compliance, the UCMR 5 PFAS MCL screen, EPA radon zone, and annual EPA AirData AQI across three equally weighted domains. Missing required evidence suppresses the score.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2024-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
1 of 1 ZIP records with known zones is in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by TX or modeled from parcel and building-footprint data.
- 77356 - Montgomery
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Montgomery County Municipal Utility District 18 (TX1700546) on EPA.gov.
Frequently Asked Questions
Is Montgomery County Municipal Utility District 18 water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Montgomery County Municipal Utility District 18 in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Montgomery County Municipal Utility District 18 serve?
Montgomery County Municipal Utility District 18 serves approximately 7,608 people across 1 ZIP code in Texas.
Where does Montgomery County Municipal Utility District 18 get its water?
The primary water source is groundwater.
Federal UCMR5 PFAS Monitoring: Detected
This water system was tested under the federal EPA Unregulated Contaminant Monitoring Rule (UCMR5). PFAS compounds were detected; the table compares each one with the EPA MCL where one exists (April 2024 rule, compliance required from 2029) and with this state's enforceable standard where one exists.
EPA's April 2024 PFAS rule sets MCLs of 4 ppt for PFOA and PFOS and 10 ppt for PFHxS, PFNA and HFPO-DA (GenX); water systems must comply from 2029. Other PFAS compounds have no individual federal MCL. A state standard is shown only where this system's state has its own enforceable PFAS limit. Detection results are EPA UCMR5 samples, not a measurement at your tap.
Source: U.S. EPA UCMR5 (Unregulated Contaminant Monitoring Rule, 5th cycle) — per-system federal sampling, 2023–2025. EPA UCMR5 monitoring program →
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Montgomery County Municipal Utility District 18, TX. https://zipcheckup.com/water-system/tx1700546/
@misc{zipcheckup-water-system-tx1700546,
author = {{ZipCheckup}},
title = {{Montgomery County Municipal Utility District 18, TX}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/tx1700546/}
}