Hard water in Fort Bend County
Hardness is rarely in an annual report, but the state samples it. Here are the published ranges by system, with their dates, and what the numbers mean at your sink.
What hardness is and how it's measured
Hardness is mostly dissolved calcium and magnesium, picked up as water passes through rock and soil. It is measured in milligrams per liter as calcium carbonate (mg/L as CaCO3) or in grains per gallon (gpg). One grain per gallon is 17.1 mg/L.
Hardness is not a regulated drinking-water standard and is not required in annual water quality reports, so most reports leave it out. The main public source is the Texas Commission on Environmental Quality, which samples each system's entry points and distribution and publishes the results. Those are the figures below.
Common signs of hard water
- White spots on glassware and a film on shower glass.
- Scale on faucets, showerheads, and inside kettles and water heaters.
- Soap that lathers poorly and leaves a residue.
- Laundry that feels stiff.
None of these is a diagnosis. The published figure for your system is the place to start, and a test at home settles it.
Published hardness, by water system
Ranges cover the state's entry-point and distribution samples in the window shown; raw well samples are excluded. Always a range, never one average, because a system with several entry points can deliver different water to different streets.
The bars use the U.S. Geological Survey's classes: soft to 60 mg/L (3.5 gpg), moderately hard to 120 (7.0), hard to 180 (10.5), very hard above that. USGS, Hardness of Water
Sugar Land (5)
| System | PWSID | Range (mg/L) | Range (gpg) | Samples and dates | Source |
|---|---|---|---|---|---|
| City of Sugar Land | TX0790005 | 104-201 | 6.1-11.8 | 6 samples, Jan 23, 2025 – Apr 21, 2026 | TCEQ sample results · checked Nov 2026 |
| City of Sugar Land New Territory | TX0790253 | 53.8-171 | 3.1-10.0 | 3 samples, Jan 18, 2024 – Apr 23, 2025 | TCEQ sample results · checked Nov 2026 |
| City of Sugar Land Greatwood | TX0790296 | 97.4-109 | 5.7-6.4 | 2 samples, Jan 18, 2024 – Jan 18, 2024 | TCEQ sample results · checked Nov 2026 |
| First Colony MUD 9 | TX0790230 | 142 | 8.3 | 1 sample, Jul 14, 2025 | TCEQ sample results · checked Nov 2026 |
| City of Sugar Land River Park | TX0790354 | 104 | 6.1 | 1 sample, Feb 7, 2025 | TCEQ sample results · checked Nov 2026 |
Missouri City / Sienna (10)
| System | PWSID | Range (mg/L) | Range (gpg) | Samples and dates | Source |
|---|---|---|---|---|---|
| Quail Valley Utility District | TX0790028 | 134-199 | 7.8-11.6 | 3 samples, Mar 26, 2026 – Mar 26, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 23 | TX0790237 | 28.3-75.1 | 1.7-4.4 | 2 samples, Apr 1, 2024 – Feb 18, 2026 | TCEQ sample results · checked Nov 2026 |
| City of Missouri City Mustang Bayou Wate | TX0790207 | 10.5-159 | 0.6-9.3 | 5 samples, Jan 31, 2024 – Apr 6, 2026 | TCEQ sample results · checked Nov 2026 |
| Blue Ridge West MUD | TX0790051 | 43.7 | 2.6 | 1 sample, Mar 19, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 26 Quail Green West | TX0790137 | 172 | 10.1 | 1 sample, Jul 7, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 42 Wat Plat | TX0790254 | 140 | 8.2 | 1 sample, Jun 9, 2026 | TCEQ sample results · checked Nov 2026 |
| Meadowcreek MUD | TX0790049 | 136 | 8.0 | 1 sample, Jul 7, 2026 | TCEQ sample results · checked Nov 2026 |
| Palmer Plantation MUD 2 | TX0790323 | 30.7 | 1.8 | 1 sample, Mar 18, 2024 | TCEQ sample results · checked Nov 2026 |
| Palmer Plantation MUD 1 | TX0790199 | 153 | 8.9 | 1 sample, Mar 18, 2024 | TCEQ sample results · checked Nov 2026 |
| Sienna Regional MUD | TX0790373 | 121-177 | 7.1-10.4 | 2 samples, Feb 1, 2024 – Apr 4, 2024 | TCEQ sample results · checked Nov 2026 |
Stafford / Meadows Place (1)
| System | PWSID | Range (mg/L) | Range (gpg) | Samples and dates | Source |
|---|---|---|---|---|---|
| Fort Bend County WCID 2 | TX0790004 | 40.1-176 | 2.3-10.3 | 8 samples, Jan 10, 2024 – Mar 30, 2026 | TCEQ sample results · checked Nov 2026 |
Richmond / Rosenberg (7)
| System | PWSID | Range (mg/L) | Range (gpg) | Samples and dates | Source |
|---|---|---|---|---|---|
| City of Rosenberg | TX0790003 | 94.3 (reported in the CCR) | 5.5 | CCR data year 2025 | water quality report · checked Nov 2026 |
| City of Richmond | TX0790023 | 124-231 | 7.3-13.5 | 8 samples, Jan 8, 2024 – Jun 29, 2026 | TCEQ sample results · checked Nov 2026 |
| Pecan Grove MUD | TX0790132 | 60.8-132 | 3.6-7.7 | 6 samples, Jan 10, 2024 – Feb 3, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 134E | TX0790574 | 35.9-135 | 2.1-7.9 | 26 samples, Mar 28, 2024 – Oct 28, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 253 | TX0790639 | 89.8 | 5.3 | 1 sample, Jun 23, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County WCID 3 | TX0790368 | 190-230 | 11.1-13.5 | 6 samples, Mar 14, 2024 – May 18, 2026 | TCEQ sample results · checked Nov 2026 |
| Richmond Community Estates | TX0790576 | 225-253 | 13.2-14.8 | 3 samples, Feb 9, 2026 – Sep 30, 2026 | TCEQ sample results · checked Nov 2026 |
Fulshear (4)
| System | PWSID | Range (mg/L) | Range (gpg) | Samples and dates | Source |
|---|---|---|---|---|---|
| City of Fulshear | TX0790133 | 55-162 | 3.2-9.5 | 90 samples, Feb 5, 2024 – Sep 11, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 182 | TX0790500 | 101 | 5.9 | 1 sample, Jun 5, 2024 | TCEQ sample results · checked Nov 2026 |
| Fulshear MUD 3A | TX0790560 | 54.05-164.16 | 3.2-9.6 | 7 samples, Feb 26, 2024 – Sep 30, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 222 | TX0790607 | 114-126 | 6.7-7.4 | 3 samples, May 21, 2025 – May 21, 2025 | TCEQ sample results · checked Nov 2026 |
Katy / Cinco Ranch / NFBWA area (29)
| System | PWSID | Range (mg/L) | Range (gpg) | Samples and dates | Source |
|---|---|---|---|---|---|
| City of Houston | TX1010013 | 43.5-229 (reported in the CCR) | 7.9 | CCR data year 2025 | water quality report · checked Nov 2026 |
| City of Katy | TX1010017 | 109-155 | 6.4-9.1 | 5 samples, Jan 8, 2025 – Apr 14, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 30 | TX0790146 | 104-127 | 6.1-7.4 | 4 samples, Apr 1, 2025 – Jul 6, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 142 | TX0790429 | 119 | 7.0 | 1 sample, Feb 25, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 58 | TX0790458 | 76.3-126 | 4.5-7.4 | 4 samples, Feb 22, 2024 – Feb 16, 2026 | TCEQ sample results · checked Nov 2026 |
| Mission Bend MUD 2 | TX1011826 | 99.8-197 | 5.8-11.5 | 2 samples, Jul 8, 2026 – Jul 8, 2026 | TCEQ sample results · checked Nov 2026 |
| North Mission Glen MUD | TX0790174 | 116 | 6.8 | 1 sample, Jan 16, 2025 | TCEQ sample results · checked Nov 2026 |
| Kingsbridge MUD | TX0790158 | 151-153 | 8.8-8.9 | 2 samples, Nov 17, 2025 – Mar 18, 2026 | TCEQ sample results · checked Nov 2026 |
| Weston MUD | TX1010634 | 125-134 | 7.3-7.8 | 2 samples, May 8, 2024 – Feb 10, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 133 | TX0790444 | 110 | 6.4 | 1 sample, Feb 6, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 2 | TX0790038 | 129 | 7.5 | 1 sample, Apr 1, 2025 | TCEQ sample results · checked Nov 2026 |
| Grand Mission MUD 1 | TX0790430 | 132-147 | 7.7-8.6 | 2 samples, Mar 5, 2024 – Mar 5, 2024 | TCEQ sample results · checked Nov 2026 |
| Mission Bend MUD 1 | TX1011718 | 199-218 | 11.6-12.7 | 2 samples, Aug 18, 2026 – Aug 18, 2026 | TCEQ sample results · checked Nov 2026 |
| Big Oaks MUD | TX0790332 | 109 | 6.4 | 1 sample, Jan 23, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 50 | TX0790277 | 84-130 | 4.9-7.6 | 17 samples, Mar 19, 2024 – Jul 30, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 146 | TX0790435 | 123-125 | 7.2-7.3 | 2 samples, Apr 16, 2025 – Apr 27, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 34 | TX0790200 | 119 | 7.0 | 1 sample, Jun 13, 2024 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 118 | TX0790366 | 108-139 | 6.3-8.1 | 2 samples, Feb 29, 2024 – Jul 21, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 57 | TX0790455 | 58.9 | 3.4 | 1 sample, Mar 11, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 119 | TX0790382 | 113 | 6.6 | 1 sample, Jan 28, 2025 | TCEQ sample results · checked Nov 2026 |
| Harris Fort Bend Counties MUD 5 | TX0790347 | 75.2-126 | 4.4-7.4 | 2 samples, Jul 21, 2025 – Sep 3, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 41 | TX0790229 | 88.3-133 | 5.2-7.8 | 3 samples, Apr 9, 2024 – Jan 23, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 81 Weston Lakes | TX0790268 | 147-166 | 8.6-9.7 | 3 samples, Aug 12, 2024 – Mar 24, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 122 | TX0790416 | 118 | 6.9 | 1 sample, Jan 29, 2025 | TCEQ sample results · checked Nov 2026 |
| Cinco MUD 1 | TX0790274 | 109-164 | 6.4-9.6 | 20 samples, Dec 8, 2023 – May 7, 2026 | TCEQ sample results · checked Nov 2026 |
| Cinco Southwest MUD 1 | TX0790438 | 106 | 6.2 | 1 sample, Feb 11, 2025 | TCEQ sample results · checked Nov 2026 |
| Lakes of Mission Grove | TX0790423 | 190 | 11.1 | 1 sample, Mar 7, 2024 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 255 | TX0790647 | 84-133 | 4.9-7.8 | 5 samples, Mar 11, 2025 – Jul 30, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 134A | TX0790477 | 80.2 | 4.7 | 1 sample, Mar 18, 2026 | TCEQ sample results · checked Nov 2026 |
Southern / rural Fort Bend (4)
| System | PWSID | Range (mg/L) | Range (gpg) | Samples and dates | Source |
|---|---|---|---|---|---|
| City of Needville | TX0790001 | 263-298 | 15.4-17.4 | 3 samples, Feb 9, 2026 – Feb 9, 2026 | TCEQ sample results · checked Nov 2026 |
| City of Arcola | TX0790520 | 65.4-241 | 3.8-14.1 | 13 samples, Nov 30, 2023 – Jun 30, 2026 | TCEQ sample results · checked Nov 2026 |
| City of Beasley | TX0790014 | 71.4 | 4.2 | 1 sample, Mar 3, 2025 | TCEQ sample results · checked Nov 2026 |
| City of Orchard | TX0790037 | 223 | 13.0 | 1 sample, Jun 20, 2025 | TCEQ sample results · checked Nov 2026 |
Systems not yet assigned to an area (42)
Other / area not assigned (42)
| System | PWSID | Range (mg/L) | Range (gpg) | Samples and dates | Source |
|---|---|---|---|---|---|
| Fort Bend County MUD 25 | TX0790130 | 57.9-218 | 3.4-12.7 | 4 samples, Jul 22, 2024 – Jan 15, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 151 | TX0790443 | 103 | 6.0 | 1 sample, Mar 18, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 143 Water View Esta | TX0790472 | 179 | 10.5 | 1 sample, Mar 11, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County FWSD 1 | TX0790474 | 18.6-59.8 | 1.1-3.5 | 2 samples, Mar 11, 2026 – Jun 8, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 162 | TX0790459 | 121 | 7.1 | 1 sample, Aug 7, 2024 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 116 Canyon Gate | TX0790367 | 157 | 9.2 | 1 sample, May 12, 2025 | TCEQ sample results · checked Nov 2026 |
| Plantation MUD | TX0790112 | 156-156 | 9.1-9.1 | 2 samples, Aug 11, 2026 – Aug 11, 2026 | TCEQ sample results · checked Nov 2026 |
| Brazoria - Fort Bend Counties MUD 3 | TX0790597 | 92.6-270 | 5.4-15.8 | 13 samples, Mar 28, 2024 – Nov 25, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 229 | TX0790602 | 142-160 | 8.3-9.4 | 16 samples, Jan 30, 2024 – Sep 10, 2026 | TCEQ sample results · checked Nov 2026 |
| TDCJ Jester Unit 3 | TX0790085 | 161-187 | 9.4-10.9 | 2 samples, Jul 14, 2025 – Jul 14, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County FWSD 2 | TX0790440 | 94.1-207 | 5.5-12.1 | 13 samples, Mar 17, 2025 – Sep 10, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 130 | TX0790371 | 135 | 7.9 | 1 sample, Nov 11, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 131 | TX0790450 | 227 | 13.3 | 1 sample, Feb 24, 2026 | TCEQ sample results · checked Nov 2026 |
| Kingdom Heights Water System | TX0790462 | 173 | 10.1 | 1 sample, Aug 18, 2025 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 220 | TX0790573 | 85.1 | 5.0 | 1 sample, Mar 18, 2025 | TCEQ sample results · checked Nov 2026 |
| Willow Point MUD | TX0790550 | 121 | 7.1 | 1 sample, Oct 1, 2024 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 37 | TX0790189 | 164 | 9.6 | 1 sample, Mar 21, 2024 | TCEQ sample results · checked Nov 2026 |
| Charleston MUD | TX0790588 | 118 | 6.9 | 1 sample, Apr 9, 2025 | TCEQ sample results · checked Nov 2026 |
| Fulbrook Subdivision Water Plant | TX0790385 | 146 | 8.5 | 1 sample, Mar 7, 2024 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 132 | TX0790566 | 118-121 | 6.9-7.1 | 3 samples, Sep 23, 2024 – Jul 21, 2026 | TCEQ sample results · checked Nov 2026 |
| Rosemeadows III | TX0790396 | 128 | 7.5 | 1 sample, May 14, 2024 | TCEQ sample results · checked Nov 2026 |
| Deer Run Meadows | TX0790612 | 147-150 | 8.6-8.8 | 3 samples, Nov 3, 2023 – Mar 7, 2024 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 189 | TX0790497 | 138 | 8.1 | 1 sample, Jul 6, 2026 | TCEQ sample results · checked Nov 2026 |
| Olympia Falls Water Plant | TX0790592 | 72-89.9 | 4.2-5.3 | 4 samples, Jun 16, 2025 – Sep 22, 2026 | TCEQ sample results · checked Nov 2026 |
| Brazos Lakes Water Supply | TX0790363 | 165 | 9.6 | 1 sample, Feb 22, 2024 | TCEQ sample results · checked Nov 2026 |
| Horseshoe Bend | TX0790144 | 349 | 20.4 | 1 sample, Mar 19, 2024 | TCEQ sample results · checked Nov 2026 |
| Tejas Lakes Subdivision | TX0790504 | 41.4-72 | 2.4-4.2 | 9 samples, Mar 8, 2024 – Oct 18, 2024 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 258 | TX0790641 | 81.2 | 4.7 | 1 sample, Aug 12, 2026 | TCEQ sample results · checked Nov 2026 |
| Tejas Landing Subdivision | TX0790656 | 34 | 2.0 | 1 sample, May 14, 2024 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 251 | TX0790629 | 202 | 11.8 | 1 sample, Mar 10, 2026 | TCEQ sample results · checked Nov 2026 |
| River Ranch | TX0790425 | 194 | 11.3 | 1 sample, Dec 10, 2025 | TCEQ sample results · checked Nov 2026 |
| Niagra Public Water Supply | TX0790261 | 79.7 | 4.7 | 1 sample, Oct 28, 2024 | TCEQ sample results · checked Nov 2026 |
| Tejas Trails Subdivision | TX0790593 | 234 | 13.7 | 1 sample, May 14, 2024 | TCEQ sample results · checked Nov 2026 |
| Crystal Lake Estates | TX0790510 | 218 | 12.7 | 1 sample, Jul 22, 2026 | TCEQ sample results · checked Nov 2026 |
| Sun Ranch Water System | TX0790428 | 134 | 7.8 | 1 sample, Dec 3, 2025 | TCEQ sample results · checked Nov 2026 |
| Goldenrod WSC | TX0790383 | 317 | 18.5 | 1 sample, Mar 20, 2025 | TCEQ sample results · checked Nov 2026 |
| Riverbend RV Park and Resort | TX0790414 | 208 | 12.2 | 1 sample, May 20, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 246 | TX0790609 | 151-168.17 | 8.8-9.8 | 5 samples, Oct 14, 2024 – Sep 30, 2026 | TCEQ sample results · checked Nov 2026 |
| Sako Properties | TX0790537 | 289 | 16.9 | 1 sample, Nov 13, 2025 | TCEQ sample results · checked Nov 2026 |
| Esperanza WTP | TX0790670 | 141 | 8.2 | 1 sample, May 11, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 214 | TX0790689 | 175 | 10.2 | 1 sample, Jul 23, 2026 | TCEQ sample results · checked Nov 2026 |
| Fort Bend County MUD 250 | TX0790621 | 197 | 11.5 | 1 sample, Mar 3, 2025 | TCEQ sample results · checked Nov 2026 |
Don't see your system? The state has no published sample we could verify, or we haven't checked it yet. Find your system's report with EPA's search
One city, several numbers
TCEQ sample results for the City of Sugar Land main system (PWS TX0790005) show total hardness of 104 to 201 mg/L as CaCO3 (6.1 to 11.8 grains per gallon) across six entry-point samples taken from January 23, 2025 to April 21, 2026. The city's 2025 Water Quality Report lists a single 2025 total-hardness value of 104 ppm.
The city's own water-quality page gives a wider range, 35 to 280 ppm, without sample dates, so we cite it only as context. Sugar Land water quality page
Sugar Land is a good example of why one city can show several numbers. The main system blends surface water and wells and has several entry points; New Territory, Greatwood, and River Park are separate systems with their own figures. The same is true across the county. A MUD next door to another can draw from different wells, sample on different dates, or have switched to surface water since the last sample.
So we show ranges with dates and never a single number for a city.
Testing at home
The system's published figure tells you what the system delivered at its entry points on the sample dates. A test at your tap tells you what reaches your home today. For sizing a softener we use both when both exist, and we say which one we relied on.
Get the Water You Deserve
Talk to the Fort Bend Water Pros team today
Tell us your water system and what you're noticing. We'll size a softener to the published figure, or test first if there isn't one.