The Woodlands MUD No. 1
TX17004712025: chlorine 1.91 mg/L average; HAA5 15 ppb and TTHM 41 ppb highest LRAA. Lead 1.07 ppb and copper 0.252 ppm at the 90th percentile for 2021–2023.
PWS-level water intelligence
The Woodlands Water Quality System Lookup
Compare 2025 water-quality measurements across 11 Woodlands-area PWSs while keeping every result tied to its district and report.
✓ Official sources✓ System-specific✓ No invented city averages
Evidence status
Coverage model: Eleven district PWSs across two counties
Use the district map, Township utility lookup, or current water bill to match the address before opening the applicable report.
Measurements publishedThe Woodlands is not one public water system. Ten Woodlands Water-managed MUDs cover the Montgomery County portion, while Harris-Montgomery Counties MUD No. 386 independently serves parts of Creekside Park in Harris County.
How to read The Woodlands district reports
Each district publishes its own Consumer Confidence Report. The ranges above are there to help you find your way around, not to give an area average. Use the row for your district.
- Disinfectant. The 2025 reports list free chlorine residuals from 1.46 to 2.05 mg/L. If taste or odor bothers you, a carbon filter with a published chlorine claim is the matching category. See whole-house water filtration.
- Disinfection byproducts. TTHM ranged from 5.3 to 70 ppb and HAA5 from not detected to 21 ppb (highest 2025 running annual averages, or highest detected for MUD 386). The federal limits are 80 ppb and 60 ppb.
- Lead and copper. 90th percentile lead ranged from 0.634 to 3.32 ppb across monitoring periods, and MUD 67 reported one sampled site over the 15 ppb action level. These results reflect household plumbing as well as the supply. A point-of-use filter certified for lead is the targeted option if you have concerns.
- Violations. MUD 7 reported a monitoring and reporting violation: one of 30 lead and copper samples came from outside the approved site list. That is not a contaminant-limit exceedance.
Hardness
The district results summarized here do not include a Woodlands hardness figure. Test hardness at your tap before buying or programming a softener.
Next steps
Find your district on the bill or The Woodlands Township utilities page, open its report, and compare companies that name The Woodlands in The Woodlands company list.
System resolution
Which water system applies?
Montgomery County MUD No. 6
TX17000902025: chlorine 2.05 mg/L average; HAA5 18 ppb and TTHM 59 ppb highest LRAA. Lead 3.32 ppb and copper 0.194 ppm at the 2024 90th percentile.
Montgomery County MUD No. 7
TX17001692025: chlorine 1.81 mg/L average; HAA5 21 ppb and TTHM 58 ppb highest LRAA. Lead 1.7 ppb and copper 0.151 ppm at the 2023–2025 90th percentile. The CCR also reports a lead-and-copper monitoring violation: 29 compliant samples were counted because one sample was not from the approved site list; follow-up was scheduled for 2026.
The Woodlands Metro Center MUD
TX17003092025: chlorine 1.79 mg/L average; HAA5 9 ppb and TTHM 42 ppb highest LRAA. Lead 1.42 ppb and copper 0.195 ppm at the 2022–2024 90th percentile.
Montgomery County MUD No. 36
TX17001392025: chlorine 2.02 mg/L average; HAA5 12 ppb and TTHM 38 ppb highest LRAA. Lead 1.16 ppb and copper 0.138 ppm at the 2021–2023 90th percentile.
Montgomery County MUD No. 39
TX17003322025: chlorine 1.88 mg/L average; HAA5 12 ppb and TTHM 43 ppb highest LRAA. Lead 0.634 ppb and copper 0.108 ppm at the 2023–2025 90th percentile.
Montgomery County MUD No. 46
TX17003482025: chlorine 1.91 mg/L average; HAA5 17 ppb and TTHM 49 ppb highest LRAA. Lead 2.46 ppb and copper 0.258 ppm at the 2021–2023 90th percentile.
Montgomery County MUD No. 47
TX17004582025: chlorine 1.91 mg/L average; HAA5 14 ppb and TTHM 39 ppb highest LRAA. Lead 0.703 ppb and copper 0.146 ppm at the 2023–2025 90th percentile.
Montgomery County MUD No. 60
TX17004702025: chlorine 1.73 mg/L average; HAA5 16 ppb and TTHM 53 ppb highest LRAA. Lead 3.16 ppb and copper 0.135 ppm at the 2021–2023 90th percentile.
Montgomery County MUD No. 67
TX17005542025: chlorine 1.83 mg/L average; HAA5 19 ppb and TTHM 70 ppb highest LRAA. Lead was 0.833 ppb at the 2022–2024 90th percentile, with one sampled site reported over the action level; copper was 0.128 ppm.
Harris-Montgomery Counties MUD No. 386 - Creekside
TX10133052025: chlorine 1.46 mg/L highest average (the source reports ppm), HAA5 not detected, and TTHM 5.3 ppb highest detected. Lead was 1.4 ppb and copper 0.0354 ppm at the 2023 90th percentile. The report says this district obtains all water from Harris County MUD No. 387.
Measured facts
Published measurements
PWS-specific 2025 average or highest-average values; see the applicable district record below.
Monitoring periods vary by PWS. MUD 67 separately reported one sampled site over the action level.
Highest 2025 LRAA for the ten Woodlands Water MUDs; MUD 386 reports highest detected rather than LRAA.
Highest 2025 LRAA for the ten Woodlands Water MUDs; MUD 386 reports highest detected rather than LRAA.
LADS interpretation
What the evidence means—and does not mean
- The summary ranges are navigation aids, not a Woodlands average. Each exact value remains attached to its district PWS, statistic, and monitoring period.
- MUD 7 reported a monitoring-and-reporting violation, not a contaminant-limit exceedance: one of 30 samples was outside the approved site list, so the CCR says the system could not be sure of water quality during that monitoring window.
- The MUD 67 report lists a 0.833 ppb lead 90th percentile and one sampled site over the 15 ppb action level. Those are different facts and both are preserved.
- MUD 386 uses highest-detected statistics for disinfection byproducts and reports wholesale supply from Harris County MUD No. 387; its values are not collapsed into Woodlands Water LRAAs.
- Address-level utility matching remains separate from market-level publication readiness. Confirm the district before applying any result to a property.
Measured fact
Values above stay tied to their named system, units, sample or report year, and official source.
Publisher interpretationPlanning language is educational context. It is not an official safety determination, diagnosis, ranking, or equipment prescription.
Primary evidence
Official sources
The Woodlands Township - UtilitiesOfficial provider and Creekside Park coverage contextOpen official source ↗Woodlands Water - Drinking Water Quality ReportsOfficial report hub for ten managed MUDsOpen official source ↗The Woodlands MUD No. 1 - 2025 CCRPWS TX1700471Open official source ↗Montgomery County MUD No. 6 - 2025 CCRPWS TX1700090Open official source ↗Montgomery County MUD No. 7 - 2025 CCRPWS TX1700169Open official source ↗The Woodlands Metro Center MUD - 2025 CCRPWS TX1700309Open official source ↗Montgomery County MUD No. 36 - 2025 CCRPWS TX1700139Open official source ↗Montgomery County MUD No. 39 - 2025 CCRPWS TX1700332Open official source ↗Montgomery County MUD No. 46 - 2025 CCRPWS TX1700348Open official source ↗Montgomery County MUD No. 47 - 2025 CCRPWS TX1700458Open official source ↗Montgomery County MUD No. 60 - 2025 CCRPWS TX1700470Open official source ↗Montgomery County MUD No. 67 - 2025 CCRPWS TX1700554Open official source ↗Harris-Montgomery Counties MUD No. 386 - 2025 CCRPWS TX1013305, Creekside service areaOpen official source ↗
Evidence before equipment