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2025 Sanitary Sewer Cleaning and CCTV Services Notice

DRC Construction and C & L Water have been contracted to clean and televise district-owned sewer lines. This work will be performed between 4/21/2025 and 7/3/2025. During this process, crews may require access to your property.

Plant Construction Updates

Aerial view of a construction site at Niwot Sanitation District, showing large concrete tanks with green water, part of a wastewater treatment facility. A yellow crane is positioned near a circular tank, while rectangular tanks with scaffolding and walkways are under construction. Construction materials, a white trailer, and heavy machinery are scattered around the site, with temporary fencing and a dirt path visible in the background.
Construction Update 15: Major Progress in April on Headworks, UV Building, Clarifier, & Oxidation Ditch
This month at Niwot Sanitation’s Wastewater Treatment Plant, the clarifier and scum pit are complete, ready for UV sterilization before release into Dry Creek. The UV building has trusses and weather guard installed, awaiting metal sheeting. The Headworks project nears completion with CMU walls, plumbing, and electrical work nearly done. The Anaerobic Digester passed water tests post-patchwork, with its deck poured. The Oxidation Ditch progresses with water testing through May, grating installed, and its elevated deck poured and curing. The new gravity main successfully crossed Dry Creek, marking a key milestone. Upcoming tasks include caulking, roofing, and insulation for the UV building and Headworks, plus continued electrical and concrete work site-wide. Thank you for following our progress!
A panoramic aerial view of a rural construction site under a bright blue sky with scattered clouds. The site is surrounded by snow-covered fields, with patches of bare ground visible. In the foreground, there are several buildings and structures, including what appears to be a construction office and storage facilities. Construction equipment and vehicles are scattered around, with dirt roads and pathways connecting different parts of the site. In the background, the landscape extends into flat, open fields
Construction Update 14: Clarifier, Headworks, and Digester Construction Milestones
This month at the Niwot Sanitation District Waste Water Treatment Plant, we've made significant strides. The clarifier and scum pit are complete, with the clarifier ready for water to be sterilized in our new UV building before release into Dry Creek. The Headworks project is advancing with CMU installation, plumbing, and electrical work nearly finished. The Anaerobic Digester passed its water tests post-patchwork, and RLW has started on its elevated deck. The Oxidation Ditch sees progress with grating installed and the elevated deck poured, now curing.
An aerial view of a construction site in a rural area with mountains in the background. The main structure is a partially completed square building made of concrete blocks with a doorway and small window. Construction materials and equipment are scattered around, including a pile of metal rods and an orange box nearby. In the background, there's a green-roofed building and various construction machinery and workers. The site is surrounded by open fields and sparse trees.
Construction Update 13: Ending 2024 with Major Progress
Significant strides have been made in the new Niwot Sanitation District plant. The Oxidation Ditch is seeing progress with elevated deck installations and water testing of the anaerobic selector. The Dewatering Building is being sealed for upcoming water tests. Meanwhile, the Clarifier is undergoing major installations including decking and piping. The Headworks Building has completed its underslab piping and backfilling, and the Headworks UV Building has finished its CMU work, ready for further development.
Aerial view of a construction site featuring an oxidation ditch with multiple concentric concrete rings and elevated steel frameworks for future concrete pours. Adjacent structures are also under construction, with some areas covered by protective white sheeting, and a dirt road running alongside. The site is surrounded by barren land with sparse vegetation.
Construction Update 12: Significant Progress Toward Headworks and Oxidation Ditch Construction
Several key projects are making headway. The Oxidation Ditch features new elevated decks, setting the stage for future concrete work. Meanwhile, the Headworks site sees the electrical room backfilled and underslab piping installation progressing. The Dewatering building is being prepped for a water test with sealings and repairs. The UV building showcases nearly completed CMU installation, and the Clarifier undergoes backfilling with its scum box passing the water test.
Ground-level view of the Contact Chamber construction site, showing scaffolding surrounding a partially built structure made of CMU blocks. Stacks of unused CMU blocks and construction materials are visible on the ground, with an open field in the background.
Construction Update 11: Key Milestones at Headworks and Contact Chamber
Construction at the Headworks site is advancing with new walls and poured slabs, and electrical and plumbing installations underway. The Contact Chamber is taking shape with the first CMU blocks in place, marking a significant milestone. The Clarifier has passed water tests, and RLW is progressing with backfilling and shoring removal. Expansion continues on the Oxidation Ditch decking, and the anaerobic selector is preparing for a water test. Final touches are being applied to the aerobic digester and dewatering building in preparation for their upcoming water test. Overall, significant progress is being made across multiple projects.
Aerial view of the construction progress on the aerobic digester and dewatering building, showing nearly completed poured concrete walls and a clean worksite.
Construction Update 10: Major Milestones Achieved with Oxidation Ditch, Clarifier, Headworks, and Dewatering Buildings
This week, Rice Lake Construction made major progress on constructing the Oxidation Ditch, the aerobic digester and dewatering building, and the Clarifier. Crews are building the Oxidation Ditch walkway and constructing the anaerobic digester walls, with work including formwork and curing processes. The aerobic digester and dewatering building is nearing completion, with most walls poured. The Clarifier system is also advancing, with a newly completed scum pit. Lastly, the Headworks project continues to move forward, with new walls being formed and poured.
An aerial view of the construction site showing the Oxidation Ditch anaerobic tank taking shape, featuring circular concrete walls, rebar installations, and surrounding construction activity.
Construction Update 09: Progress Continues on Dewatering Building, Headworks, and Oxidation Ditch
Construction progress is advancing on several projects. The Dewatering building's aerobic digester tanks are curing, with heaters and tarps maintaining optimal conditions. The Headworks project has completed wall pours, with blankets protecting the curing process. The Oxidation Ditch anaerobic tank is nearing its next pour, and Clarifier forms are being set for the scum pit.
Aerial view of a large, circular concrete water tank under construction. The tank is surrounded by dirt and excavation equipment. Other smaller tanks can be seen in the background.
Construction Update 08: Construction Progress Continues Despite Cold Weather and Snow
Construction progress continues despite cold weather. The Dewatering Building is advancing with wall pours and form installations. The Headworks Building is nearing completion of form and rebar work. Niwot is adding an anaerobic treatment tank to meet regulatory requirements. Gravity and non-portable lines are 80% complete. RLW focused on the Dewatering Building due to snow and mud conditions.
An aerial view of a large, circular oxidation ditch under construction. The ditch has multiple concrete walls and a central section with a water channel. There is also a smaller, circular tank filled with blue water nearby.
Construction Update 07: Major Headworks, Clarifier, and Oxidation Ditch Progress
This week's update includes significant construction progress on various components of the Niwot Sanitation District's wastewater treatment facility. The headworks structure is fully prepared for the next concrete pour, with rebar and wall forms in place. The clarifier has passed its water test, and scum pit construction is set to begin shortly. Rice Lake West achieved a major milestone by reinforcing and pouring the oxidation ditch's main walls ahead of the first frost. Additionally, the first concrete walls for the dewatering building have been poured. Lastly, the gravity main and non-potable lines are nearing completion, with installation of manhole inverts currently underway.
Aerial view of a clarifier filled with bright blue water, marking the start of a water test. The circular concrete structure is surrounded by dirt and excavation, with equipment and safety barriers nearby. This test provides a rare look at the clarifier basin before final backfill and further construction work, such as the installation of the scum pit.
Construction Update 06: Significant Headworks and Oxidation Ditch Construction Completed
Construction of the new sanitation plant continued to make steady progress this week. The new headworks building now includes completed pipes, rebar, and wall forms after a recent concrete pour. The clarifier began water testing, while the oxidation ditch neared completion. A new manhole connected to the future gravity main, and the dewatering building prepared for upcoming pours.