Hatcher Creek not flowing today. Soil moisture on lawn "moist" at 2". Pink residual water from old water heater contained mixture of mineral and organic sediment. After 72 hours on agar petri dish, substrate overgrown with mixture of punctiform, filamentous, rhizoid, circular, pulvinate, different shades of whitish-colored microbes. The same size sample from the used HVAC intake filter during recent change was overgrown with different darker microbes in circular, filamentous, pulvinate, convex patterns. Placed copper tubing near indoor water fixtures and observed pale greenish patina blotches form in only one room. 20 tap water temperatures in the last month averaged 67.3 F (+/- 1.5 F) compared to outdoor air temperature at the same sample times 69.6 F (+/- 6.0 F).