Wisconsin Department of Natural Resources Drinking Water System Routine Monitoring Requirements Period: 01/01/2025 to 12/31/2025 Subject to change -- based on information provided to DNR as of 04/26/2025 Attachment 1 04/26/2025 07:31:10 PM

If any of the following information has changed, please contact your DNR representative with any corrections:
WEBSTER, ARYN RHINELANDER, WI 54501
Phone: (715) 499-1160 Email: ARYN.WEBSTER@WISCONSIN.GOV

System Name: TOMAHAWK WATERWORKS PWS ID#: 73501274 Population: 3,180

Sampler: GLENN HANNA Owner: TOMAHAWK CITY CLERK- AMANDA L BARTZ

The following is a table of the routine monitoring required for this water system (additional monitoring may be required based on results of this monitoring). Each row represents a DNR monitoring requirement. Failure to complete a requirement may result in a monitoring violation. Please make sure that you are using the correct lab sheet for each sample, based on the correct time period, sample location and sample group.

Completed? Monitoring Period Sample Source Sample Group # of samples # of contams
COMPLETEJANUARYDistributionColiform Bacteria31
JANUARY - SEPTEMBEREP 4Nitrate11
JANUARY - SEPTEMBEREP 5Nitrate11
COMPLETEFEBRUARYDistributionColiform Bacteria31
COMPLETEMARCHDistributionColiform Bacteria31
COMPLETEAPRILDistributionColiform Bacteria31
MAYDistributionColiform Bacteria31
JUNEDistributionColiform Bacteria31
JULYDistributionColiform Bacteria31
AUGUSTDistributionColiform Bacteria31
SEPTEMBERDistributionColiform Bacteria31
OCTOBERDistributionColiform Bacteria31
NOVEMBERDistributionColiform Bacteria31
DECEMBERDistributionColiform Bacteria31
Waivers:
Benzo(A)Pyrene (Synthetic Form)4Waiver issued - No sampling required during calendar year 2025
Benzo(A)Pyrene (Synthetic Form)5Waiver issued - No sampling required during calendar year 2025
Cyanide (Inorganic Report Form)4Waiver issued - No sampling required during calendar year 2025
Cyanide (Inorganic Report Form)5Waiver issued - No sampling required during calendar year 2025
Dioxin (Synthetic Report Form)4Waiver issued - No sampling required during calendar year 2025
Dioxin (Synthetic Report Form)5Waiver issued - No sampling required during calendar year 2025
EDB/DBCP (Synthetic Report Form)4Waiver issued - No sampling required during calendar year 2025
EDB/DBCP (Synthetic Report Form)5Waiver issued - No sampling required during calendar year 2025
Industrial Chemicals (Synthetic Form)4Waiver issued - No sampling required during calendar year 2025
Industrial Chemicals (Synthetic Form)5Waiver issued - No sampling required during calendar year 2025
Synthetic Organics - Pop < 100004Waiver issued - No sampling required during calendar year 2025
Synthetic Organics - Pop < 100005Waiver issued - No sampling required during calendar year 2025