Pool Service & Repair in Hillsboro, TX

Hillsboro buys its drinking water from the Aquilla Water Supply District, which draws surface water from Lake Aquilla under a contract with the Brazos River Authority. Surface-water supplies carry dissolved minerals that concentrate as pool water evaporates through the Texas summer. Without regular testing, calcium and other minerals build up on tile lines and inside salt chlorinator cells. We check saturation levels on every visit, apply sequestering agents when mineral concentration rises, and recommend partial drains before scaling becomes permanent.

The city treats its water with chloramines — a combination of chlorine and ammonia that is more stable in long distribution lines. Chloraminated fill water matters for pool owners because it registers differently on standard DPD test kits, making free-chlorine readings unreliable if you are not testing for combined chlorine separately. We use reagents designed for chloraminated source water so our adjustments reflect what is actually in your pool.

Hillsboro sits on the Blackland Prairie, where the dominant soil is a heavy smectite clay that swells when wet and shrinks when dry. That movement puts stress on pool shells, coping, and concrete decks. Cracks open along mastic joints during summer droughts and can let water seep under the deck, washing away supporting soil and making the problem worse. We inspect expansion joints, skimmer throats, and deck-to-coping seals on every visit so small separations get addressed before they become structural repairs.