The use of concrete is an important aspect of construction. The purpose of this research is to determine the effect of water-content variation of corroded concrete with bacteria using resistivity and impact echo testing. This study used concrete with varying cement water factors of 0.44; 0.46; 0.48; and 0.5 with added Bacillus subtilis bacteria and normal concrete with water cement ratio value of 0.42. The corrosion test was used to evaluate corrosion resistance after acceleration for 48-, 96-, and 168 h. The results showed that the higher the water-cement ratio, the lower the compressive strength and flexural strength. The impact of corrosion on flexural strength showed a decrease over time due to corrosion. The initial resistivity of the bacteria concrete showed a low corrosion level with a resistivity between 50–100 kΩ.cm, while the standard concrete showed moderate resistivity in the range of 10–50 kΩ.cm. The resonance frequency for standard concrete was in the range of 8085.9 Hz to 11787.1 Hz, while the concrete with bacteria was in the higher range of 16793.2 Hz to 17498.8 Hz. Resistivity and frequency values decreased significantly after the corrosion process depending on the duration of accelerated corrosion. The use of a water-cement ratio value of 0.42 had higher average compressive and flexural strength tests. The concrete self-healing process closed the cracks in the concrete which continued with time.