Wisconsin Department of Natural Resources Drinking Water System Preliminary Routine Monitoring Requirements Period: 01/01/2027 to 12/31/2027 Subject to change -- based on information provided to DNR as of 10/29/2026 Attachment 1 10/29/2026 03:17:29 AM

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
JANUARYDistributionColiform Bacteria101
JANUARYDistributionFluoride - Operator/Lab Split11
JANUARY3 RawTotal Organic Carbon Raw Water (no alkalinity)11
JANUARY - SEPTEMBEREP 81Inorganics12
FEBRUARYDistributionColiform Bacteria101
FEBRUARYDistributionFluoride - Operator/Lab Split11
FEBRUARY3 RawTotal Organic Carbon Raw Water (no alkalinity)11
FEBRUARY 08 - FEBRUARY 18DistributionDisinfection Byproducts (TTHM, HAA5)411
MARCHDistributionColiform Bacteria101
MARCHDistributionFluoride - Operator/Lab Split11
MARCH3 RawTotal Organic Carbon Raw Water (no alkalinity)11
APRILDistributionColiform Bacteria101
APRILDistributionFluoride - Operator/Lab Split11
APRIL3 RawTotal Organic Carbon Raw Water (no alkalinity)11
MAYDistributionColiform Bacteria101
MAYDistributionFluoride - Operator/Lab Split11
MAY3 RawTotal Organic Carbon Raw Water (no alkalinity)11
MAY 09 - MAY 19DistributionDisinfection Byproducts (TTHM, HAA5)411
JUNEDistributionColiform Bacteria101
JUNEDistributionFluoride - Operator/Lab Split11
JUNE3 RawTotal Organic Carbon Raw Water (no alkalinity)11
JULYDistributionColiform Bacteria101
JULYDistributionFluoride - Operator/Lab Split11
JULY3 RawTotal Organic Carbon Raw Water (no alkalinity)11
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
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 2027
Asbestos (Inorganic Report Form)2Waiver issued - No sampling required during calendar year 2027
Asbestos (Inorganic Report Form)81Waiver issued - No sampling required during calendar year 2027
Benzo(A)Pyrene (Synthetic Form)1Waiver issued - No sampling required during calendar year 2027
Benzo(A)Pyrene (Synthetic Form)2Waiver issued - No sampling required during calendar year 2027
Benzo(A)Pyrene (Synthetic Form)81Waiver issued - No sampling required during calendar year 2027
Cyanide (Inorganic Report Form)2Waiver issued - No sampling required during calendar year 2027
EDB/DBCP (Synthetic Report Form)2Waiver issued - No sampling required during calendar year 2027
EDB/DBCP (Synthetic Report Form)81Waiver issued - No sampling required during calendar year 2027
Industrial Chemicals (Synthetic Form)2Waiver issued - No sampling required during calendar year 2027
Volatile Organic Sample81Waiver issued - No sampling required during calendar year 2027