Our team worked with a rural plant where raw water turbidity spiked heavily after storms, so jar testing became a regular routine. We started with low increments and tracked floc formation time, sludge volume, and supernatant clarity. Temperature also played a noticeable role in reaction efficiency, especially in cold months. To avoid overdosing and excessive sludge hauling, we maintained a simple spreadsheet logging NTU changes, dose adjustments, and polymer pairing. When we trialed different sources, we checked purity, solution stability, and bulk density. Eventually, we standardized on an alum flocculant grade that balanced cost and reactivity, and trained operators to adjust in 5% steps instead of making big swings. Keeping good turbidity meters and settling cones on site really helped refine the process.