Wisconsin Department of Natural Resources Drinking Water System Routine Monitoring Requirements Period: 01/01/2026 to 12/31/2026 Subject to change -- based on information provided to DNR as of 06/15/2026 Attachment 1 06/15/2026 07:16:11 PM

If any of the following information has changed, please contact your DNR representative with any corrections:
MAJOR, LARA GREEN BAY, WI 54313
Phone: (920) 713-1904 Email: LARAD.MAJOR@WISCONSIN.GOV

System Name: MARINETTE WATERWORKS PWS ID#: 43803958 Population: 10,968

Sampler: OIC NEIL MOTTO Owner: MARINETTE CITY CLERK - LANA BERO

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 Bacteria101
COMPLETEJANUARYDistributionFluoride - Operator/Lab Split11
COMPLETEJANUARY3 RawTotal Organic Carbon Raw Water (no alkalinity)11
COMPLETEJANUARY - SEPTEMBEREP 81Inorganics116
COMPLETEJANUARY - SEPTEMBEREP 81Radioactivity - Grab14
COMPLETEJANUARY - SEPTEMBEREP 81Synthetic Organics13
COMPLETEJANUARY - SEPTEMBEREP 81Volatile Organics141
COMPLETEFEBRUARYDistributionColiform Bacteria101
COMPLETEFEBRUARYDistributionFluoride - Operator/Lab Split11
COMPLETEFEBRUARY3 RawTotal Organic Carbon Raw Water (no alkalinity)11
COMPLETEFEBRUARY 08 - FEBRUARY 18DistributionDisinfection Byproducts (TTHM, HAA5)411
COMPLETEMARCHDistributionColiform Bacteria101
COMPLETEMARCHDistributionFluoride - Operator/Lab Split11
COMPLETEMARCH3 RawTotal Organic Carbon Raw Water (no alkalinity)11
COMPLETEAPRILDistributionColiform Bacteria101
COMPLETEAPRILDistributionFluoride - Operator/Lab Split11
COMPLETEAPRIL3 RawTotal Organic Carbon Raw Water (no alkalinity)11
COMPLETEAPRIL - JUNEEP 81Synthetic Organics136
COMPLETEMAYDistributionColiform Bacteria101
COMPLETEMAYDistributionFluoride - Operator/Lab Split11
COMPLETEMAY3 RawTotal Organic Carbon Raw Water (no alkalinity)11
COMPLETEMAY 09 - MAY 19DistributionDisinfection Byproducts (TTHM, HAA5)411
JUNEDistributionColiform Bacteria101
COMPLETEJUNEDistributionFluoride - Operator/Lab Split11
JUNE3 RawTotal Organic Carbon Raw Water (no alkalinity)11
JUNE - SEPTEMBERDistributionLead and copper302
JULYDistributionColiform Bacteria101
JULYDistributionFluoride - Operator/Lab Split11
JULY3 RawTotal Organic Carbon Raw Water (no alkalinity)11
JULY - SEPTEMBEREP 81Synthetic Organics136
AUGUSTDistributionColiform Bacteria101
AUGUSTDistributionFluoride - Operator/Lab Split11
AUGUST3 RawTotal Organic Carbon Raw Water (no alkalinity)11
AUGUST 07 - AUGUST 17DistributionDisinfection Byproducts (TTHM, HAA5)411
SEPTEMBERDistributionColiform Bacteria101
SEPTEMBERDistributionFluoride - Operator/Lab Split11
SEPTEMBEREP 81Per/Poly-Fluoroalkyls (PFAS)16
SEPTEMBER3 RawTotal Organic Carbon Raw Water (no alkalinity)11
OCTOBERDistributionColiform Bacteria101
OCTOBERDistributionFluoride - Operator/Lab Split11
OCTOBER3 RawTotal Organic Carbon Raw Water (no alkalinity)11
NOVEMBERDistributionColiform Bacteria101
NOVEMBERDistributionFluoride - Operator/Lab Split11
NOVEMBER3 RawTotal Organic Carbon Raw Water (no alkalinity)11
NOVEMBER 05 - NOVEMBER 15DistributionDisinfection Byproducts (TTHM, HAA5)411
DECEMBERDistributionColiform Bacteria101
DECEMBERDistributionFluoride - Operator/Lab Split11
DECEMBER3 RawTotal Organic Carbon Raw Water (no alkalinity)11
Waivers:
Asbestos (Inorganic Report Form)1Waiver issued - No sampling required during calendar year 2026
Asbestos (Inorganic Report Form)2Waiver issued - No sampling required during calendar year 2026
Asbestos (Inorganic Report Form)81Waiver issued - No sampling required during calendar year 2026
Benzo(A)Pyrene (Synthetic Form)1Waiver issued - No sampling required during calendar year 2026
Benzo(A)Pyrene (Synthetic Form)2Waiver issued - No sampling required during calendar year 2026
Benzo(A)Pyrene (Synthetic Form)81Waiver issued - No sampling required during calendar year 2026
Cyanide (Inorganic Report Form)2Waiver issued - No sampling required during calendar year 2026
EDB/DBCP (Synthetic Report Form)2Waiver issued - No sampling required during calendar year 2026
EDB/DBCP (Synthetic Report Form)81Waiver issued - No sampling required during calendar year 2026
Industrial Chemicals (Synthetic Form)2Waiver issued - No sampling required during calendar year 2026