County · Texas
Montgomery County, Texas: drinking water records
This overview covers 22 ZIP codes and 324 community water systems in Montgomery County. It also stands in for 1 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Montgomery County MUD 47 TX1700458 | 24,171 | 120 | 0 | 1 | 0.7 ppb |
| Montgomery County MUD 60 TX1700470 | 15,036 | 120 | 0 | 3 | 3.2 ppb |
| City of Willis TX1700003 | 14,133 | 180 | 0 | 2 | 0.7 ppb |
| Montgomery County MUD 7 TX1700169 | 12,528 | 120 | 0 | 1 | 1.7 ppb |
| City of Splendora TX1700087 | 9,612 | 180 | 0 | 1 | 0 ppb |
| Dobbin Plantersville WSC 1 TX1700178 | 4,767 | 180 | 0 | 5 | 0 ppb |
| Texas National MUD TX1700207 | 931 | 60 | 0 | 1 | 0 ppb |
| City of Conroe TX1700001 | 113,912 | 1,265 | 0 | 0 | 0 ppb |
| Porter Special Utility District TX1700068 | 26,388 | 240 | 0 | 0 | 0.6 ppb |
| Montgomery Trace Water System TX1700638 | 25,917 | 540 | 1 | 0 | 0.4 ppb |
| Montgomery County MUD 46 TX1700348 | 24,399 | 120 | 1 | 0 | 2.5 ppb |
| Montgomery County MUD 67 TX1700554 | 16,821 | 120 | 0 | 0 | 0.8 ppb |
| New Caney MUD TX1700101 | 14,307 | 180 | 0 | 0 | 0 ppb |
| Southern Montgomery County MUD TX1700073 | 13,372 | 300 | 0 | 0 | 0 ppb |
| Rayford Road MUD TX1700334 | 11,550 | 180 | 0 | 0 | 0.8 ppb |
| Spring Creek Utility District TX1700133 | 8,919 | 60 | 0 | 0 | 1.1 ppb |
| Montgomery County MUD 6 TX1700090 | 8,610 | 120 | 0 | 0 | 3.3 ppb |
| Old Egypt Subdivision TX1700666 | 8,442 | 240 | 0 | 0 | 0 ppb |
| The Woodlands MUD 1 TX1700471 | 7,989 | 120 | 0 | 0 | 1.1 ppb |
| Montgomery County MUD 18 TX1700546 | 7,608 | 120 | 2 | 0 | 0 ppb |
| City of Magnolia TX1700020 | 7,107 | 0 | 0 | 1 | 0.6 ppb |
| Montgomery County WCID 1 TX1700119 | 7,070 | 120 | 0 | 0 | 0 ppb |
| Montgomery County MUD 119 Spring Trails TX1700773 | 6,621 | 120 | 0 | 0 | 1.0 ppb |
| Montgomery County MUD 15 TX1700118 | 6,564 | 120 | 2 | 0 | 0.8 ppb |
| Town of Cut and Shoot TX1700592 | 6,000 | 120 | 0 | 0 | 0 ppb |
ZIP reports in Montgomery County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 77386.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.