Main System
TX0790005Serves the city east of the Brazos River.
PWS-level water intelligence
Sugar Land Water Quality by Public Water System
Compare official water hardness and dissolved-solids results across Sugar Land's Main, River Park, New Territory, and Greatwood systems.
✓ Official sources✓ System-specific✓ No invented city averages
Evidence status
Coverage model: Multi-system municipal
The four systems are not connected. Identify the applicable system from the address or water bill.
Measurements publishedSugar Land operates four independent public water systems. The 2025 report presents each system separately, so a Greatwood result must not be presented as a Sugar Land citywide average.
How to use Sugar Land's water data
Start with the system on your bill. The City runs four unconnected systems, and their numbers should never be averaged together.
| System | PWS ID | City-published hardness range | 2025 report figure |
|---|---|---|---|
| Main | TX0790005 | 35 to 280 ppm (2.0 to 16.4 gpg) | 104 ppm, about 6.1 gpg |
| Greatwood | TX0790296 | 34 to 164 ppm (2.0 to 9.6 gpg) | 103.2 ppm average (2024 result in the 2025 report) |
| New Territory | TX0790253 | 50 to 186 ppm (2.9 to 10.9 gpg) | 53.8 ppm, about 3.1 gpg |
| River Park | TX0790354 | 109 to 155 ppm (6.4 to 9.1 gpg) | See the 2025 report |
Ranges come from the City of Sugar Land water quality page (checked October 24, 2026). Report figures come from the City's 2025 Water Quality Report.
Why a single number misleads
The City explains that hardness varies from well to well and that the Main system blends treated surface water from Oyster Creek and the Brazos River with groundwater. A Main system home can get water near either end of a 2.0 to 16.4 gpg range. A single annual figure is a summary, not what reaches your tap on a given day.
On the City's scale, 61 to 120 ppm (3.5 to 7 gpg) is moderately hard, 121 to 180 ppm (7 to 10.5 gpg) is hard, and more than 180 ppm is very hard.
Turning the data into a decision
- Find your system on the bill and note its range.
- Test hardness at the tap, ideally more than once on the Main system.
- If you buy a softener, size and program it from your highest reliable reading. The water softener size guide shows how.
- Compare companies that name Sugar Land in the Sugar Land company list.
System resolution
Which water system applies?
River Park
TX0790354Serves River Park west of the Brazos River.
New Territory
TX0790253Serves the New Territory neighborhood.
Greatwood
TX0790296Serves the Greatwood neighborhood.
Measured facts
Published measurements
2025 result, about 6.1 gpg.
2025 result, about 3.1 gpg.
2024 result shown in the 2025 report; 97.4–109 ppm, about 6.0 gpg average.
2025 result; 319–473 ppm.
LADS interpretation
What the evidence means—and does not mean
- The audit’s 103.2 ppm figure belongs specifically to Greatwood, not all of Sugar Land.
- Main, New Territory, and Greatwood results demonstrate meaningful system-to-system variation.
- A treatment decision should use the serving system plus a current property test when the result affects equipment sizing.
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
Evidence before equipment