REGULATORY PROCEEDINGS (Details) - USD ($) $ in Millions					12 Months Ended
	Nov. 22, 2024	Jun. 12, 2024	May 30, 2024	Nov. 20, 2020	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Nov. 28, 2023	Apr. 28, 2023
Water and Wastewater Rates [Abstract]
Annual revenue performance obligation		$ 11.2						$ 10.8	$ 16.7
Percentage of revenue increase requested for new rates		15.20%						14.60%	22.70%
Percentage of distribution system infrastructure charge								7.50%
Percentage of return on common equity		9.50%
Overall rate of return on rate base		6.75%
Other Proceedings [Abstract]
Cumulative DSIC Rate	1.66%		0.34%	7.50%
Net Eligible Plant Improvements - Cumulative Dollars	$ 11.7		$ 2.0	$ 43.1
Maximum [Member]
Water and Wastewater Rates [Abstract]
Percentage of gross water sales in temporary rate increase placed into effect until new rates approved								0.00%
Delaware [Member]
Water and Wastewater Rates [Abstract]
Temporary annual rate increase subject to 15% gross water sales limitation					$ 2.5
Percentage of DSIC rate upon implementation of temporary increase in base rates charged to customers					0.00%
Percentage of gross water sales					15.00%
Period to complete rate case by law					7 months
Percentage of rate relief allowed should a rate case not complete					15.00%
Percentage of DSIC rate upon implementation of temporary increase in base rates charged to customers					0.00%
Other Proceedings [Abstract]
Distribution System Improvement Charge rate increase applied between base rate filings					7.50%
Distribution System Improvement Charge rate increase within a 12-month period					5.00%
Artesian Water [Member]
Other Proceedings [Abstract]
Revenue earned in DSIC rate increases					$ 0.1	$ 4.7	$ 5.1