Converse Water Hardness & Quality Report (2026)

Converse, Texas, in Bexar County — a fast-growing eastern San Antonio suburb adjacent to Randolph Air Force Base, part of the rapidly expanding northeast Bexar County residential corridor along the I-35 and Loop 1604 intersection zone — receives its municipal water from the Converse Utilities or through the San Antonio Water System (SAWS) regional supply, which draws primarily from the Edwards Aquifer. SAWS is one of the largest Edwards Aquifer users, serving over 2 million San Antonio metropolitan area residents from this karst limestone aquifer system.

The moderately hard 126.5 mg/L hardness and TDS of 276.3 mg/L are characteristic of the Edwards Aquifer supply for eastern Bexar County — notably softer than typical Texas Cretaceous carbonate belt water (Benbrook 238.5 mg/L, Radcliff 228 mg/L), reflecting the Edwards Aquifer's unique character. The Edwards Aquifer is a Cretaceous Edwards Group (including the Edwards Limestone, Comanche Peak Formation, and Georgetown Limestone) karst aquifer — a highly fractured, rapidly transmitting limestone system where groundwater has swift, dynamic circulation through cave and fracture networks. This rapid circulation prevents the prolonged rock-water contact that produces very hard water in confined, slow-moving aquifer systems, resulting in the moderately hard but relatively fresh Edwards water quality.

At 126.5 mg/L, Converse's water is moderately hard — comfortable by Texas standards. Scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling of heating appliances is the standard schedule. The PFAS level of 5.8 ppt warrants a certified drinking water filter — Randolph Air Force Base's airfield operations and AFFF firefighting foam use, combined with the San Antonio metro's military-industrial PFAS complex (Lackland AFB, Kelly Field), contribute to the eastern Bexar County PFAS profile.