Ridgefield is among the municipalities to share in $580-million in clean-water grants to upgrade sewer systems and waste-water treatment facilities.  18 prioritized projects will be spread out over two years, with some  funding from the Bipartisan Infrastructure Law.  $10 million has been approved to permanently close a sewage treatment facility in Ridgefield with $7 million to upgrade a Litchfield plant.  Cities and towns may submit applications for reserve funds through the end of the 2022-23 fiscal year.