The Securities and Exchange Commission has not necessarily reviewed the information in this filing and has not determined if it is accurate and complete.
The reader should not assume that the information is accurate and complete.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
FORM 13F

FORM 13F INFORMATION TABLE
OMB APPROVAL
OMB Number: 3235-0006
Estimated average burden
hours per response: 23.8
COLUMN 1 COLUMN 2 COLUMN 3 COLUMN 4 COLUMN 5 COLUMN 6 COLUMN 7 COLUMN 8
VALUE SHRS OR SH/ PUT/ INVESTMENT OTHER VOTING AUTHORITY
NAME OF ISSUER TITLE OF CLASS CUSIP FIGI (to the nearest dollar) PRN AMT PRN CALL DISCRETION MANAGER SOLE SHARED NONE
3M CO COM 88579Y101 BBG001S5T7X2 242,489 2,307 SH   SOLE   2,307 0 0
ADOBE SYSTEMS INCORPORATED COM 00724F101 BBG001S5NCQ5 4,104,576 10,651 SH   SOLE   10,651 0 0
ALPHABET INC CAP STK CL A 02079K305 BBG009S39JY5 14,093,484 135,867 SH   SOLE   135,867 0 0
ALPHABET INC CAP STK CL C 02079K107 BBG009S3NB21 353,600 3,400 SH   SOLE   3,400 0 0
AMAZON COM INC COM 023135106 BBG001S5PQL7 709,602 6,870 SH   SOLE   6,870 0 0
AMER STATES WTR CO COM 029899101 BBG001S9T5Z6 4,117,385 46,320 SH   SOLE   46,320 0 0
ANALOG DEVICES INC COM 032654105 BBG001S5ND38 244,356 1,239 SH   SOLE   1,239 0 0
APPLE INC COM 037833100 BBG001S5N8V8 17,679,918 107,216 SH   SOLE   107,216 0 0
AUTOMATIC DATA PROCESSING IN COM 053015103 BBG001S82KF6 11,702,991 52,567 SH   SOLE   52,567 0 0
BADGER METER INC COM 056525108 BBG001S5P8Q2 3,765,700 30,912 SH   SOLE   30,912 0 0
BERKSHIRE HATHAWAY INC DEL CL A 084670108 BBG001S902J2 6,518,400 311 SH   SOLE   311 0 0
BERKSHIRE HATHAWAY INC DEL CL B NEW 084670702 BBG001S90346 1,387,921 4,495 SH   SOLE   4,495 0 0
BROOKFIELD RENEWABLE CORP CL A SUB VTG 11284V105 BBG00W5FR7D1 5,279,617 151,062 SH   SOLE   151,062 0 0
CALIFORNIA WTR SVC GROUP COM 130788102 BBG001S7QBD4 4,038,032 69,382 SH   SOLE   69,382 0 0
CANADIAN NATL RY CO COM 136375102 BBG001S8WVQ7 11,251,507 95,376 SH   SOLE   95,376 0 0
CISCO SYS INC COM 17275R102 BBG001S6HC62 781,982 14,959 SH   SOLE   14,959 0 0
COSTCO WHSL CORP NEW COM 22160K105 BBG001S9KRQ7 12,166,856 24,487 SH   SOLE   24,487 0 0
DANAHER CORPORATION COM 235851102 BBG001S5QGT0 3,064,554 12,159 SH   SOLE   12,159 0 0
DATADOG INC CL A COM 23804L103 BBG003NJHZW5 2,179,800 30,000 SH   SOLE   30,000 0 0
DIGITAL RLTY TR INC COM 253868103 BBG001SM0K30 8,597,701 87,455 SH   SOLE   87,455 0 0
EASTERN BANKSHARES INC COM 27627N105 BBG00W9KWY41 4,902,239 388,450 SH   SOLE   388,450 0 0
EATON CORP PLC SHS G29183103 BBG001S5QZ45 7,329,754 42,779 SH   SOLE   42,779 0 0
ETSY INC COM 29786A106 BBG001T53625 2,888,012 25,941 SH   SOLE   25,941 0 0
FEDEX CORP COM 31428X106 BBG001S5R3M5 10,235,667 44,797 SH   SOLE   44,797 0 0
GENERAL MLS INC COM 370334104 BBG001S5RKR2 290,564 3,400 SH   SOLE   3,400 0 0
GRAINGER W W INC COM 384802104 BBG001S5RRD2 629,572 914 SH   SOLE   914 0 0
HOME DEPOT INC COM 437076102 BBG001S5RTW7 9,269,129 31,408 SH   SOLE   31,408 0 0
IDEX CORP COM 45167R104 BBG001S67N14 6,984,268 30,231 SH   SOLE   30,231 0 0
IDEXX LABS INC COM 45168D104 BBG001S5S4Y9 9,237,478 18,472 SH   SOLE   18,472 0 0
ILLINOIS TOOL WKS INC COM 452308109 BBG001S5SDX0 522,687 2,147 SH   SOLE   2,147 0 0
INTUIT COM 461202103 BBG001S6TWR2 11,658,900 26,151 SH   SOLE   26,151 0 0
ISHARES TR CORE S&P500 ETF 464287200 BBG001SFB7R6 298,444 726 SH   SOLE   726 0 0
ISHARES TR S&P 100 ETF 464287101 BBG001SGB026 533,251 2,851 SH   SOLE   2,851 0 0
JOHNSON & JOHNSON COM 478160104 BBG001S5SHQ9 2,511,620 16,204 SH   SOLE   16,204 0 0
KEMPER CORP COM 488401100 BBG001SD3BG3 258,760 4,734 SH   SOLE   4,734 0 0
LINDE PLC SHS G54950103 BBG01FND0CH6 15,917,314 44,782 SH   SOLE   44,782 0 0
MCDONALDS CORP COM 580135101 BBG001S5T110 535,453 1,915 SH   SOLE   1,915 0 0
MERCADOLIBRE INC COM 58733R102 BBG001SM32G3 396,736 301 SH   SOLE   301 0 0
MERCK & CO INC COM 58933Y105 BBG001S5TC52 309,595 2,910 SH   SOLE   2,910 0 0
MICROSOFT CORP COM 594918104 BBG001S5TD05 18,233,534 63,245 SH   SOLE   63,245 0 0
NOVO-NORDISK A S ADR 670100205 BBG001S5TSK0 18,553,814 116,588 SH   SOLE   116,588 0 0
NVIDIA CORPORATION COM 67066G104 BBG001S5TZJ6 378,601 1,363 SH   SOLE   1,363 0 0
PAYPAL HLDGS INC COM 70450Y103 BBG0077VNXW5 6,410,779 84,419 SH   SOLE   84,419 0 0
PEPSICO INC COM 713448108 BBG001S695T1 592,657 3,251 SH   SOLE   3,251 0 0
PROCTER AND GAMBLE CO COM 742718109 BBG001S5V4L9 714,009 4,802 SH   SOLE   4,802 0 0
SAFETY INS GROUP INC COM 78648T100 BBG001S78T90 4,382,894 58,815 SH   SOLE   58,815 0 0
SALESFORCE INC COM 79466L302 BBG001SDLP09 11,461,379 57,370 SH   SOLE   57,370 0 0
SMITH A O CORP COM 831865209 BBG001S5NRY3 7,877,914 113,925 SH   SOLE   113,925 0 0
SPDR S&P 500 ETF TR TR UNIT 78462F103 BBG001S72SM3 930,134 2,272 SH   SOLE   2,272 0 0
STRYKER CORPORATION COM 863667101 BBG001S8FR03 18,015,155 63,107 SH   SOLE   63,107 0 0
TELEDYNE TECHNOLOGIES INC COM 879360105 BBG001SDK336 492,096 1,100 SH   SOLE   1,100 0 0
TESLA INC COM 88160R101 BBG001SQKGD7 1,066,137 5,139 SH   SOLE   5,139 0 0
THE CIGNA GROUP COM 125523100 BBG00KXRCDQ9 357,742 1,400 SH   SOLE   1,400 0 0
TILRAY BRANDS INC COM 88688T100 BBG00L7XTPY9 379,212 149,886 SH   SOLE   149,886 0 0
TJX COS INC NEW COM 872540109 BBG001S5WQ93 9,980,792 127,371 SH   SOLE   127,371 0 0
UNILEVER PLC SPON ADR NEW 904767704 BBG001S5X1K4 16,572,992 319,141 SH   SOLE   319,141 0 0
VANGUARD INDEX FDS TOTAL STK MKT 922908769 BBG001SHTB03 263,085 1,289 SH   SOLE   1,289 0 0
XYLEM INC COM 98419M100 BBG001V05C73 7,916,367 75,610 SH   SOLE   75,610 0 0
ZOOM VIDEO COMMUNICATIONS IN CL A 98980L101 BBG0042V6JN7 3,351,081 45,383 SH   SOLE   45,383 0 0