A water company shall provide tier 1 notices to its consumers in the languages predominantly spoken by the consumers in the water company’s service area. A water company shall update its emergency response plan prepared pursuant to section 25-32d or pursuant to section 19-13-B102 of the regulations of Connecticut state agencies to include information regarding the provision of such multilingual communications. As used in this section, “water company” has the same meaning as provided in section 25-32a and “tier 1 notices” has the same meaning as provided in section 19-13-B102 of the regulations of Connecticut state agencies.