NO Utility Committee Meeting - Reports Attached

MEMORANDUM CLERKS Date: October 15, 2026 To: Mayor and Common Council From: Gina Kozlik, City Clerk Re: Utility Committee MEMORANDUM At this time, there are no items for review by the Utility Committee that need to move forward. The usual department reports have been prepared and are attached for your information and review. 1 kWh Sold kWh Sold kWh Sold kWh Sold Sep-26 Sep-25 Sep-26 Sep-25 Residential 9,374,410 7,910,527 1,463,883 18.5% 68,609,087 65,400,870 3,208,217 4.9% Commercial 2,383,749 2,124,347 259,402 12.2% 20,471,915 19,643,078 828,837 4.2% Large Power 10,694,120 9,967,759 726,361 7.3% 89,416,749 88,481,743 935,006 1.1% Public Street/Hwy Ltg. 56,691 53,606 3,085 5.8% 497,271 481,875 15,396 3.2% Private Yard Lighting 2,294 2,269 25 1.1% 21,009 21,267 (258) -1.2% Total Electric Sales 22,511,264 20,058,508 2,452,756 12.2% 179,016,031 174,028,833 4,987,198 2.9% Gallons Sold (Thousands) Gallons Sold (Thousands) Gallons Sold (Thousands) Gallons Sold (Thousands) Sep-26 Sep-25 Sep-26 Sep-25 Residential 34,748 31,825 2,923 9.2% 284,885 252,022 32,863 13.0% Multi Family 6,813 6,658 155 2.3% 59,180 54,798 4,382 8.0% Commercial 18,725 16,541 2,184 13.2% 138,515 119,904 18,611 15.5% Industrial 3,373 3,166 207 6.5% 24,689 21,167 3,522 16.6% Public Auth/Muni 2,198 1,753 445 25.4% 13,985 12,320 1,665 13.5% Total Water Sales 65,857 59,943 5,914 9.9% 521,254 460,211 61,043 13.3% Gallons Sold (Thousands) Gallons Sold (Thousands) Gallons Sold (Thousands) Gallons Sold (Thousands) Sep-26 Sep-25 Sep-26 Sep-25 Residential 21,784 21,287 497 2.3% 203,454 199,412 4,042 2.0% Commercial A 10,087 9,386 701 7.5% 81,296 103,702 (22,406) -21.6% Commercial B 9,542 8,451 1,091 12.9% 84,395 47,129 37,266 79.1% Industrial A 2,247 1,813 434 23.9% 15,872 12,804 3,068 24.0% Industrial B 253 491 (238) -48.5% 4,049 3,849 200 5.2% Total Gallons Treated 43,913 41,428 2,485 6.0% 389,066 366,896 22,170 6.0% Note: Quantities sold are amounts invoiced during the month. Due to the timing of billing cycles, the amounts may not match consumption during the calendar month. Y:\Utility Billing\Committee\[Sales Table for Committee 2026.xlsx]CommSummary WATER Volume Increase (Decrease) Percent Increase (Decrease) Volume Increase (Decrease) Percent Increase (Decrease) WASTEWATER Volume Increase (Decrease) Percent Increase (Decrease) Volume Increase (Decrease) Percent Increase (Decrease) OCONOMOWOC UTILITIES - VOLUME STATISTICS Current Month Year To Date ELECTRIC Volume Increase (Decrease) Percent Increase (Decrease) Volume Increase (Decrease) Percent Increase (Decrease) 2 Oconomowoc Utilities: Monthly Volume & Revenue Summary Note: Charts exclude non-metered revenue (pole attachments, etc.) Note: Quantities represent amounts invoiced. Due to timing of mid-month billing cycles, line-loss, etc., amounts will differ from volume purchased from WPPI. Note: Charts exclude non-metered revenue (fire protection, etc.) Note: Quantities represent amounts invoiced. Due to timing of mid-month billing cycles, main-breaks, etc., amounts will differ from volume pumped at well sites. Note: Charts exclude adjoining sanitary districts and non-metered revenue (septic disposal, etc.) Note: Quantities represent amounts invoiced. Due to timing of mid-month billing cycles, external sanitary districts, rain-seepage, etc., amounts will differ from volume received at treatment facility Y:\Utility Billing\Committee\[Sales Summary Charts 2026.xlsx]UC Report 2026 WaterWastewater Metered Volume Units Metered Revenue Dollars Electric 0 5 10 15 20 25 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Million kWh 2024 Total 2024 Lg Pwr 2024 Res 2024 Com 2025 Total 2025 Lg Pwr 2025 Res 2025 Com 2026 Total 2026 Lg Pwr 2026 Res 2026 Com 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Million $ 2024 Total 2024 Lg Pwr 2024 Res 2024 Com 2025 Total 2025 Lg Pwr 2025 Res 2025 Com 2026 Total 2026 Lg Pwr 2026 Res 2026 Com 0 10 20 30 40 50 60 70 80 90 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Million Gallons 2024 Total 2024 Ind 2024 Res 2024 Com 2025 Total 2025 Ind 2025 Res 2025 Com 2026 Total 2026 Ind 2026 Res 2026 Com 0 100 200 300 400 500 600 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Thousand $ 2024 Total 2024 Ind 2024 Res 2024 Com 2025 Total 2025 Ind 2025 Res 2025 Com 2026 Total 2026 Ind 2026 Res 2026 Com 0 5 10 15 20 25 30 35 40 45 50 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Million Gallons 2024 Total 2024 Ind 2024 Res 2024 Com 2025 Total 2025 Ind 2025 Res 2025 Com 2026 Total 2026 Ind 2026 Res 2026 Com 0 50 100 150 200 250 300 350 400 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Thousand $ 2024 Total 2024 Ind 2024 Res 2024 Com 2025 Total 2025 Ind 2025 Res 2025 Com 2026 Total 2026 Ind 2026 Res 2026 Com 3 Oconomowoc Utilities: YTD Volume & Revenue Summary Note: Charts exclude non-metered revenue (pole attachments, etc.) Note: Quantities represent amounts invoiced. Due to timing of mid-month billing cycles, line-loss, etc., amounts will differ from volume purchased from WPPI. Note: Charts exclude non-metered revenue (fire protection, etc.) Note: Quantities represent amounts invoiced. Due to timing of mid-month billing cycles, main-breaks, etc., amounts will differ from volume pumped at well sites. Note: Charts exclude adjoining sanitary districts and non-metered revenue (septic disposal, etc.) Note: Quantities represent amounts invoiced. Due to timing of mid-month billing cycles, external sanitary districts, rain-seepage, etc., amounts will differ from volume received at treatment facility. Y:\Utility Billing\Committee\[Sales Summary Charts 2026.xlsx]UC Report 2026 WaterWastewater Metered Volume Units Metered Revenue Dollars Electric 0 50 100 150 200 250 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Million kWh 2024 Total 2024 Lg Pwr 2024 Res 2024 Com 2025 Total 2025 Lg Pwr 2025 Res 2025 Com 2026 Total 2026 Lg Pwr 2026 Res 2026 Com 0.0 5.0 10.0 15.0 20.0 25.0 30.0 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Million $ 2024 Total 2024 Lg Pwr 2024 Res 2024 Com 2025 Total 2025 Lg Pwr 2025 Res 2025 Com 2026 Total 2026 Lg Pwr 2026 Res 2026 Com 0 100 200 300 400 500 600 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Million Gallons 2024 Total 2024 Ind 2024 Res 2024 Com 2025 Total 2025 Ind 2025 Res 2025 Com 2026 Total 2026 Ind 2026 Res 2026 Com 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 4,500 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Thousand $ 2024 Total 2024 Ind 2024 Res 2024 Com 2025 Total 2025 Ind 2025 Res 2025 Com 2026 Total 2026 Ind 2026 Res 2026 Com 0 50 100 150 200 250 300 350 400 450 500 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Million Gallons 2024 Total 2024 Ind 2024 Res 2024 Com 2025 Total 2025 Ind 2025 Res 2025 Com 2026 Total 2026 Ind 2026 Res 2026 Com 0 500 1,000 1,500 2,000 2,500 3,000 3,500 4,000 Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Thousand $ 2024 Total 2024 Ind 2024 Res 2024 Com 2025 Total 2025 Ind 2025 Res 2025 Com 2026 Total 2026 Ind 2026 Res 2026 Com 4 COMMITTEE REPORT – October 2026 Utility Billing Electric Utility Consumption – The below chart shows 20 years of historical trends. The past two years, annual purchases of power from WPPI have been increasing (blue line). The September amount of 237,293,391 kWh was the highest since August 2016. However, this is still much lower than the 2007 peak when the city had more industrial power usage. Note, the chart scale is modified to highlight the changes. The rolling annual average unit cost of power purchased from WPPI (red line, $83.17 / MWh) has been increasing over the past year, but has remained relatively flat for the past 15 years. Using internal data and guidance from WPPI, the 2027 budget includes projected total purchases of 240,941,438 kWh at $88.86. Winter Disconnection Moratorium – We are now preparing for the annual disconnection moratorium. Residential electric customers cannot be disconnected for non-payment between November 1st and April 15th if their source of heat is connected to their electric service. So far this year, 146 customers have been disconnected at some point (slightly higher than the 135 at this point last year). Delinquent Balance Tax Roll Transfer – Utility customers in the City of Oconomowoc or Village of Summit with a past due balance on October 1st that remains unpaid as of November 1st will have a municipal 10% fee added to the total due. Amounts that continue to remain unpaid as of November 15th are transferred to the property owner’s annual tax bill on that date. The property owner may be different from the utility customer. Property owners are always sent copies of utility bills for customers with past due balances. On October 14th, we plan to mail letters to customers (and property owners) regarding the potential transfer. Similar to disconnection notices, most customers make payments or acceptable arrangements. However, each year some balances are charged to the tax roll. John Schuh, CPA Utility Accounting Manager 5 COMMITTEE REPORT – October 2026 Oconomowoc Electric Utility WPPI Purchased Power The electric utility’s greatest expense every year is the wholesale power we purchase from Wisconsin Public Power Inc.(WPPI). WPPI has a diverse portfolio of electric generation and firm contracts with other power sources to ensure that the wholesale power we purchase, year-round, is at the best price possible. There is a 0% chance that we could purchase our own power or produce our own power at a lower cost. That is why it was so important to extend our contract with WPPI, in July, to the year 2073. As you can see from the graph below, projecting how much power we budget for versus how much power we actually purchase is difficult to do. Many factors come into play. The factors include the weather (how many hot days and cold days are we going to have in 2027?), the economy, and the amount of load growth (new customers). Based on recent trends, for 2027, we have budgeted that we will purchase 241,000,000 kWh or 241,000 MWh of power. Annual kWh of Electricity Purchased from WPPI Project Updates: As of October 12, 2026.  The following projects have been completed: o New electrical service to the new Chapman Park bathroom o Replacement of old primary distribution cable in the Burtonwood subdivision area o Relocate/bury electric service in conflict with new home built at 4657 River Rd. o Replace deteriorated transformer (rust) at 1320 Pabst Farms Circle 6 o Bucket truck dielectric and mechanical testing by USSI on 9/22/26 – 9/23/26 o Service to new home in Oconomowoc Lake, 350 Al, located at 6 Earling Ct. o Annual Streetlight Checks – Found 18 lights to repair before Halloween o New streetlights completed on west side of the bridge on the new Lake Bluff Dr. Services:  New Services/Meters: o 6 new residential services and 46 new electric meters were installed in September. o PSC required periodic testing of three phase electric meters is taking place for 2026. o 24 meters have been changed out for the PSC required testing/replacement of single- phase meters in September.  Customer calls/issues: o 9/15/26: B phase cable failure – Svatos Dr. 101 customers out for 65 min- repaired o 9/16/26: A phase cable struck by street contractor – Globe Contracting – Greenland/Lisbon area - 95 customers out for 44 min - repaired o 9/28/26: 35855 Hewitts Point Rd – flickering lights/voltage issues – ran temporary – long service o 9/29/26 – 852 Westover – elbow backed off bushing – suspect transformer hit by contractor – 4 customers out for 96 min o 9/29/26: 739 Elizabeth St – contractor struck service cable – 1 customer out for 45 min o 9/29/26: 7 customers over-voltaged during padmount transformer replacement o 10/4/26:1232 Juniper – secondary cable fault – 1 customer out for 59 minutes o 10/5/26: 540 Glenview – transformer internal fuse blown – unknown cause – 3 customers out for 60 min. o 10/10/26: Cable fault on C phase – Snyder Way/Robruck – 47 customers out for 4 hours. Due to construction in the area, the customers are temporarily on a radial feed. Traffic Control Lights:  A traffic signal on corner of Summit/Silver Lake St was found to be leaning, causing clearance issues over the roadway. It was removed on 10/9/26. This repair will require a new base to be engineered and installed. Substations:  Replacing circuit breakers 80, 81, and 82 at Cooney Substation as part of our capital improvement plan to replace defective and aged equipment in the substation. Training:  In September the following training occurred: o 9/10/26: Annual pole top rescue and bucket truck training by MEUW’s John Salschieder o Week of 9/21/26: Apprentice Nathan James attended Week 2, Year 2 apprentice line school o 10/7/26: MEUW Management training – Matt Magnussen o Week 0f 10/12/26: David Arnot Week 2, Year 4 apprentice line school. 7 Major projects that have been started and/or are in the works:  Olde Highlander #4 switch relocation  Lake Bluff Dr extension: install new streetlights, east of new bridge  The Social – new electrical service to building renovation project  Prairie Creek #11 – install new streetlights after new sidewalk is installed  Replacement of three substation breakers on Bus 8 at Cooney SS (week of 10/12)          Annual Infrared testing of electrical equipment is very near completion  There is a construction project scheduled later in October to upsize a culvert across the Lake Country Trail, south of the wastewater treatment plant. This work is being performed to help alleviate flooding in the area when we receive high rainfall amounts. Sincerely, Kevin Kaari Utility Manager City of Oconomowoc kkaari@oconomowoc-wi.gov 8 COMMITTEE REPORT- October - 2026 Water Utility The following are updates for ongoing projects:  Annual Street Program project o W. Wisconsin Ave – 12-inch water main installation - complete  Well 8 Pumping Station o Permanent A/C unit for the SCADA room – 95% complete o Holding final Pay Application (#13) until above work completed o Submit final SDWLP reimbursement request following final Pay App  Emergency Response Plan (ERP) – final portion of the updated Risk & Resilience Reporting requirement. Certification of the ERP needed by 12/31/26 Specialty Work:  Meter Exchange Program – Continue water meter exchanges for 5/8” to 1” meters as residents respond to Utility mailings and schedule appointments online  Valve Turning – Continue progress on goal of 500 valves exercised per year  GIS – Water Capital Improvements Planning (CIP) tool to be coordinated with recently completed DPW CIP tool to aid in short long term Annual Street project scheduling.  Nicholas Pilsner attended training sessions for cross connection backflow device testing and repairs and passed the certification exam  Nicholas Pilsner passed the Iron & Manganese Removal license exam Customer Interactions:  27 new water meters were installed  94 meter exchanges performed (100 remain for 2026 requirement)  3 water quality complaints due to fall hydrant flushing Special Report: Fall Hydrant Flushing The Water Department flushes all the fire hydrants in its service area twice per year. This includes all the public hydrants in the City of Oconomowoc and Village of Summit and most private hydrants surrounding City businesses (per Private Hydrant Flushing Agreement). The purpose of hydrant flushing is to remove natural deposits that settle on the inside of ductile iron pipes and to ensure proper hydrant operation in case of an emergency. Because the flushing process “stirs up” the water in the main, customers may notice cloudy, yellow or rusty colored water coming to their taps. The Utility advises customers to run the cold water taps in their house until the water runs clear. Avoid doing laundry or running any hot water during this time. The Utility posts notices in the local newspaper, city website pages, and Facebook. There are four hydrant flushing zones that take approximately one week each to complete. The maps are located on the website for reference. Respectfully Submitted: Scott Osborn P.E. Water Superintendent 9 Wastewater Utility Committee Report October 2026 I. Accomplishments: a. Engineering team members will be intermittently onsite the week of October 19 th and 26th to gather detailed information specific to process or mechanical operations. b. Collection System staff have cleaned 169,650ft. of sanitary sewer mainline as of 10/12/26. The City is divided up into three areas which staff rotate through. This year the area of emphasis is south and east of S. Worthington and W. Second Street. II. Upcoming Priorities: a. A new lift station control panel will soon be installed at the Lily Road lift station. b. Installation of lift station communication devices is ongoing. As of this report 18 units have been installed. c. An update of the Land Application Management Plan is due to the WDNR by November 30th. III. Challenges: a. A variable frequency drive (VFD) for the gravity belt thickener failed the week of Oct. 5. Creatively, staff bypassed the unit to allow proper operation the following day. b. The inline Ortho-Phosphate analyzer has failed. This device allows for the automatic dosing of our phosphorus removal chemical (Ferric Chloride) based on actual concentrations. In the meantime, staff have switched to a manual pumping configuration at a level intended to avoid risk. We are exploring options for replacement and have piloted preferred alternatives. IV. Utility Tasks: a. The rebuilt pump for Madison St. lift station is slated for arrival the week of October 12. This will be installed immediately. b. A rebuilt influent pump should be received the week of October 12. Staff will install this as soon as schedule allows. c. The UV system was taken off line per seasonal treatment requirements. V. OWPP: This past month was filled with community outreach and education. Events recently held were: - Farmers for Lake Country – Community conservation field day - Healthy Lake and Rivers Conference - Presentation to area lake districts - Stream tours to County Land and Water Conservation offices - Field trip and learning exercise for University Lake School 10 VI. Safety: a. This past month’s training included: i. First aid/CPR, AED – 1 session ii. Sound testing – Elgin street sweeper iii. Safety Refresher Handout – Safe driving iv. Confined Space Field Exercise/Mock Rescue – WWTP/DPW b. Safety inspections/audits included observation of: i. Tree planting – Parks, good protocols and no safety concerns ii. Pier maintenance – DPW, Proper PPE and good communication, no concerns 11