What is the largest wastewater treatment plant in Nebraska?

Missouri River Wastewater Treatment Plant in Omaha, treating an average of 23.36 MGD under NPDES permit NEL036358. Grand Island Wastewater Trtmnt in Grand Island is second at 10.67 MGD.

How much wastewater do Nebraska’s largest plants treat?

The 50 largest plants treat 81 MGD combined, 96% of the flow reported by all 175 publicly owned plants in Nebraska.

How is plant size measured?

By reported average daily flow in million gallons per day (MGD) from EPA discharge monitoring reports, the standard measure of a plant’s size. Design capacity, the flow a plant is permitted to treat, is usually higher and is shown on each profile.

Try for free Log in

The 50 largest wastewater treatment plants in Nebraska

Name: Largest wastewater treatment plants in Nebraska
Creator: Klarifi
License: https://klarifi.io/terms-of-service

Ranked by average flow · 81 MGD combined · 96% of the state's reported flow

Missouri River Wastewater Treatment Plant in Omaha is the largest publicly owned wastewater treatment plant in Nebraska by reported average flow, treating about 23.36 million gallons per day. The 50 plants below treat 81 MGD between them, 96% of the flow reported by all 175 plants in the state, and serve about 614,205 people. Every plant links to its profile with permit, technology and compliance data.

All plants in Nebraska →The 100 largest US plants →Nebraska NPDES permits →

The 50 largest publicly owned wastewater treatment plants in Nebraska by average flow (MGD), with population served, NPDES permit, expiry, treatment technology and three-year violation count.
#	Facility	City	Avg flow (MGD)	Population	NPDES permit	Expires	Technology	Violations (3y)
1	Missouri River Wastewater Treatment Plant	Omaha	23.36	199,134	NEL036358	Dec 2030	Clarifiers, Biogas balloons	0
2	Grand Island Wastewater Trtmnt	Grand Island	10.67	52,335	NE0043702	Dec 2024	Clarifiers, Aerated lagoons	11
3	Fremont Wastewater Treatment	Fremont	5.68	30,949	NE0031381	Sep 2029	Clarifiers, Covered lagoons, Uncovered lagoons, Biogas silos, Biogas balloons	0
4	Lincoln Northeast Wastewater Treatment Facility	Lincoln	4.12	54,712	NE0112488	Dec 2030	Clarifiers, Biogas silos, Biogas balloons	0
5	Kearney Wastewater Treatment	Kearney	4.06	33,959	NE0052647	Jun 2028	Clarifiers	4
6	City Of Columbus - Wastewater Treatment Facility	Columbus	3.67	24,123	NE0035025	Jun 2030	Clarifiers, Carrousels / oxidation ditches, Biogas balloons	4
7	Hastings Pollution Control Ctr	Hastings	3.41	24,878	NEL038946	Dec 2030	Clarifiers, Covered lagoons, Biogas silos	0
8	City Of Norfolk Waste Facility	Norfolk	3.31	24,410	NEL033421	Dec 2030	Clarifiers, Biogas silos, Biogas balloons	4
9	City Of South Sioux City	South Sioux City	2.27	—	NE0139904	Mar 2028	Covered lagoons	86
10	Lexington Wastewater Treatment	Lexington	1.37	10,348	NE0042668	Jun 2031	Cooling towers	17
11	Blair Wastewater Treatment	Blair	1.2	8,258	NE0021482	Dec 2029	Clarifiers, Biogas balloons	0
12	York Wastewater Treatment	York	1.12	7,766	NE0040932	Mar 2029	—	2
13	Beatrice Wastewater Treatment	Beatrice	1.06	13,243	NE0020915	Jun 2028	Clarifiers	9
14	Tecumseh Waste Water Treatment Facility	Tecumseh	1.06	1,532	NE0030911	Dec 2026	Clarifiers, Aerated lagoons, Covered lagoons, Uncovered lagoons	12
15	David City Wastewater Treatment Facility	David City	0.92	2,841	NE0021199	Jun 2031	Uncovered lagoons	30
16	Nebraska City WWTP	Nebraska City	0.9	7,202	NE0021245	Dec 2028	Clarifiers, Biogas balloons	4
17	Falls City Wastewater Treatment Facility	Falls City	0.86	4,325	NE0021148	Mar 2031	Aerated lagoons	7
18	Aurora Burn Site	Aurora	0.78	4,523	NE0031810	Mar 2028	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches	14
19	Seward Waste & Potable Water	Seward	0.78	6,964	NE0023876	Jun 2029	Clarifiers, Biogas silos, Biogas balloons	2
20	Crete WWTF	Crete	0.71	6,960	NE0034304	Mar 2029	Clarifiers	2
21	Ogallala Burn Site No 1	Ogallala	0.58	4,737	NE0040045	Sep 2029	Clarifiers, Uncovered lagoons, Biogas silos, Biogas balloons	122
22	Wayne Wastewater Treatment	Wayne	0.58	5,660	NE0033111	Sep 2026	Clarifiers	0
23	Sidney Wastewater Treatment Facility	Sidney	0.55	6,735	NE0023884	Mar 2028	Clarifiers, Aerated lagoons, Biogas balloons	4
24	Chadron Wastewater Treatment Facility	Chadron	0.54	5,482	NE0029190	Dec 2029	Uncovered lagoons	79
25	Cozad WWTF	Cozad	0.48	3,977	NE0112828	Mar 2030	Clarifiers	13
26	Holdrege Wastewater Treatment	Holdrege	0.48	5,406	NE0021202	Mar 2030	Clarifiers, Biogas balloons	72
27	Broken Bow Wastewater Treatment Facility	Broken Bow	0.46	3,559	NE0027260	Mar 2031	Uncovered lagoons	1
28	West Point Burn Site	West Point	0.45	3,282	NE0023965	Dec 2027	Covered lagoons, Uncovered lagoons	1
29	Madison Waste Water Treatment Facility	Madison	0.43	2,392	NE0049174	Dec 2026	Clarifiers, Uncovered lagoons, Carrousels / oxidation ditches	10
30	Mccook Wastewater Treatment Facility	Mccook	0.41	7,698	NE0021504	Jun 2027	Clarifiers, Uncovered lagoons, Biogas silos	3
31	Wahoo Wastewater Treatment Facility	Wahoo	0.38	4,508	NE0021679	Jun 2027	Clarifiers, Carrousels / oxidation ditches	15
32	Fairbury Wastewater Treatment Facility	Fairbury	0.36	3,942	NE0024384	Mar 2031	Clarifiers, Uncovered lagoons	1
33	Gothenburg Wastewater Treatment Facility	Gothenburg	0.33	3,574	NE0047376	Mar 2030	Uncovered lagoons	15
34	O'Neill Wastewater Treatment	Oneill	0.31	3,615	NE0049051	Sep 2026	Covered lagoons, Uncovered lagoons	111
35	Auburn Wastewater Treatment Facility	Auburn	0.29	3,460	NE0027774	Sep 2028	Clarifiers, Aerated lagoons	9
36	Valentine Water & Sewer Department	Valentine	0.29	2,737	NE0051489	Sep 2028	Clarifiers, Uncovered lagoons	0
37	Hickman Wastewater Treatment Facility	Hickman	0.27	2,432	NE0046183	Dec 2030	Clarifiers, Carrousels / oxidation ditches	15
38	Ashland Wastewater Treatment Facility	Ashland	0.25	2,834	NE0026107	Jun 2028	Clarifiers	25
39	Central City WWTF	Central City	0.25	2,906	NE0025445	Sep 2027	—	0
40	Pawnee City Wastewater Treatment Facility	Pawnee City	0.25	878	NE0042048	Mar 2030	Clarifiers	22
41	Crawford Wastewater Treatment Facility	Crawford	0.24	1,114	NE0039799	Dec 2026	—	4
42	Superior Wastewater Treatment Facility	Superior	0.24	2,251	NE0023809	Dec 2030	Uncovered lagoons	66
43	Weeping Water Wastewater Treat	Weeping Water	0.2	1,029	NE0046329	Mar 2027	—	14
44	Minden Wastewater Treatment Facility	Minden	0.2	2,808	NE0025411	Jun 2031	Aerated lagoons, Uncovered lagoons	52
45	Oakland WWTF	Oakland	0.19	1,179	NE0024023	Dec 2026	—	17
46	Battle Creek Wastewater Treatment Facility	Battle Creek	0.18	1,215	NE0041301	Dec 2025	Uncovered lagoons	27
47	St Paul Wastewater Treatment Facility	St Paul	0.18	2,290	NE0027324	Mar 2028	Aerated lagoons, Uncovered lagoons	22
48	Waterloo Wastewater Treatment Facility	Waterloo	0.18	848	NE0043311	Sep 2026	Clarifiers, Carrousels / oxidation ditches	36
49	North Bend Wastewater Treatment Facility	North Bend	0.17	1,340	NE0040924	Mar 2027	—	14
50	Wilber Waste Water Treatment Facility	Wilber	0.17	1,855	NE0045373	Jun 2031	Clarifiers, Carrousels / oxidation ditches	0

Largest plants in Nebraska: questions

Sources and methodology

Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.

Data refreshed September 11, 2026.

Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free