Community members across the Central Coast are reporting door-to-door salespeople claiming to sell state-approved water treatment devices and asking to test residents’ water. The company, California Efficiency Group is real, and confirmed the activity, but some residents found it suspicious and reported it to police. Atascadero Police Chief Dan Suttles advises residents to ask questions, avoid letting strangers inside, and report anything unusual. The City of Lompoc also warned the group is not affiliated with the city, emphasizing their water remains safe and uncontaminated. Residents are urged to stay vigilant and report concerns.