CWT ▼ -0.9% - California Water Service Group $CWT - Hawaii Water Service Proposes Rate Adjustment for Kona Service Area for Investments Made to Help Keep Service Safe, Reliable Hawaii Water Service, a subsidiary of California Water Service Group, has proposed a rate adjustment for its Kona service area to support investments aimed at maintaining safe and reliable service. The modest 0.9% decline in $CWT's stock price suggests investors may be weighing the potential benefits of infrastructure improvements against near-term concerns about the rate case process or customer impact. 31-AUG-2026 05:15 PM ET