XML 43 R31.htm IDEA: XBRL DOCUMENT v3.21.2
Regulatory Rate Filings (Details)
residence in Thousands
 3 Months Ended
Jul. 28, 2021
USD ($)
Mar. 01, 2021
USD ($)
Feb. 25, 2021
USD ($)
Jan. 29, 2021
USD ($)
Jan. 15, 2021
USD ($)
Dec. 01, 2020
USD ($)
Nov. 23, 2020
USD ($)
Oct. 28, 2020
USD ($)
Jun. 17, 2020
USD ($)
Jun. 30, 2022
USD ($)
Jun. 30, 2021
Jun. 28, 2021
serviceConnection
residence
Jun. 23, 2021
May 27, 2021
USD ($)
May 03, 2021
USD ($)
Mar. 16, 2021
USD ($)
Mar. 10, 2021
USD ($)
Mar. 03, 2021
Feb. 01, 2021
Jan. 04, 2021
USD ($)
Nov. 16, 2020
USD ($)
San Jose Water Company | General Rate Case No. 21-01-003                                          
Public Utilities, General Disclosures [Line Items]                                          
Regulatory rate filings, requested rate increase, year one                                       $ 51,585,000 $ 11,750,000
Regulatory rate filings, requested rate increase as percentage of total revenue at time of request, year one                                       13.35% 3.04%
Regulatory rate filings, requested rate increase, year two                                       $ 16,932,000  
Regulatory rate filings, proposed rate increase, percent of authorized revenue, year two                                       3.88%  
Regulatory rate filings, requested rate increase, year three                                       $ 19,195,000  
Regulatory rate filings, requested rate increase, percent of authorized revenue, year three                                       4.24%  
Regulatory rate filings, balancing and memorandum account, requested recovery (refund)                                       $ 18,499,000  
Regulatory rate filings, requested authorization for capital budget, amount                                       $ 435,000,000  
San Jose Water Company | General Rate Case No. 21-05-004                                          
Public Utilities, General Disclosures [Line Items]                                          
Regulatory rate filings, requested rate increase, year one                             $ 6,418,000            
Regulatory rate filings, requested rate increase as percentage of total revenue at time of request, year one                             1.61%            
Regulatory rate filings, rate of return, requested                             8.11%            
Regulatory rate filings, rate of return, current                             7.64%            
Regulatory rate filings, average cost of debt rate, requested                             6.20%            
Regulatory rate filings, average cost of debt rate, current                             5.48%            
Regulatory rate filings, return of equity rate, requested                             10.30%            
Regulatory rate filings, return of equity rate, current                             8.90%            
Regulatory rate filings, capital structure, debt percentage, current                             47.00%            
Regulatory rate filings, capital structure, equity percentage, current                             53.00%            
Regulatory rate filings, capital structure, debt percentage, requested                             45.00%            
Regulatory rate filings, capital structure, equity percentage, requested                             55.00%            
San Jose Water Company | Advice Letter No. 561/561A                                          
Public Utilities, General Disclosures [Line Items]                                          
Regulatory rate filings, requested rate increase, year one                           $ 17,262,000              
Regulatory rate filings, requested rate increase as percentage of total revenue at time of request, year one                           4.34%              
Connecticut Water Company                                          
Public Utilities, General Disclosures [Line Items]                                          
Public utilities, requested rate increase (decrease), amount               $ 956,000                          
Requested WICA surcharge, percentage               6.94%                   7.03%      
Authorized WICA surcharge, percentage                     7.03%                    
Regulatory rate filings, requested increase in revenues         $ 20,206,000                                
Requested increase in revenues, completed infrastructure investments not currently in approved rates and surcharges         $ 265,514,000                                
Regulatory rate filings, requested reduction in water bills for income-eligible customers         15.00%                                
Connecticut Water Company | Subsequent Event                                          
Public Utilities, General Disclosures [Line Items]                                          
Regulatory rate filings, approved revenue increase $ 5,208,000                                        
Regulatory rate filings, return of equity rate, approved 9.00%                                        
Regulatory rate filings, statutory cap reset value $ 0                                        
Connecticut Water Company | Maximum                                          
Public Utilities, General Disclosures [Line Items]                                          
Regulatory rate filings, requested authorization for debt issuance                               $ 100,000,000          
Connecticut Water Company | WICA                                          
Public Utilities, General Disclosures [Line Items]                                          
Requested WICA surcharge increase (decrease), percentage               1.11%                     0.09%    
Avon Water Company                                          
Public Utilities, General Disclosures [Line Items]                                          
Authorized WICA surcharge, percentage                     8.51%                    
CLWSC                                          
Public Utilities, General Disclosures [Line Items]                                          
Authorized regulatory surcharge, per thousand gallons   $ 0.7 $ 1.84 $ 0.95   $ 2.02                              
Authorized regulatory base charge, per residential account     $ 0.51                                    
Potential increase in number of service connections | serviceConnection                       1,400                  
Number of county residences served | residence                       4                  
Maine Water Company                                          
Public Utilities, General Disclosures [Line Items]                                          
Regulatory rate filings, requested rate increase, year one                                 $ 6,659,000        
Regulatory rate filings, requested rate increase as percentage of total revenue at time of request, year one                                 77.50%        
Public utilities, requested rate increase (decrease), amount             $ 304,000                            
Approved rate increase (decrease)                 $ 198,000                        
Approved rate increase (decrease), step increase 1                 9.80%                        
Approved rate increase (decrease), step increase 2                 3.51%                        
Approved rate increase (decrease)                 13.31%                        
Authorized temporary surcharge, percentage                         22.65%                
Maine Water Company | Forecast                                          
Public Utilities, General Disclosures [Line Items]                                          
Regulatory rate filings, requested project replacement value                   $ 60,000,000                      
Maine Water Company | Maximum                                          
Public Utilities, General Disclosures [Line Items]                                          
Requested WISC surcharge increase (decrease), percentage             5.00%                            
Maine Water Company | Minimum                                          
Public Utilities, General Disclosures [Line Items]                                          
Requested WISC surcharge increase (decrease), percentage             1.10%