Lompoc Wastewater Plant
1801 W Central Ave, Lompoc, CA 93436 · Santa Barbara County · Publicly Owned Treatment Works
- Average flow
- 6.37 MGD
- Design flow
- 5.5 MGD
- NPDES permit
- CA0048127
- Effective
- Permit expires
- April 2027
- Population served
- 53,937
- CWNS 2022
Lompoc Wastewater Plant is a publicly owned wastewater treatment works in Lompoc, Santa Barbara County, California treating an average of 6.37 million gallons per day against a permitted design capacity of 5.5 MGD, serving about 53,937 residents. It discharges under NPDES permit CA0048127 (effective), which expires in April 2027, with 11 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in September 2020.
Treatment technology
5 treatment structures and unit processes identified at Lompoc Wastewater Plant.
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See the full treatment train at Lompoc Wastewater Plant: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 11
- Effluent violations
- 10
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Lompoc Wastewater Plant in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $201,000
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Sep 2020
Lompoc Wastewater Reclamation Plant
Administrative order · CWA, NPDES Permit Violations · Final Order No Penalty · Compliance actions $201,000
EPA's description of the case:
“Section 309(a) of the Clean Water Act ( CWA or the Act ), 33 U.S.C. Section 1319(a), provides that, whenever the U.S. Environmental Protection Agency ( EPA ) finds that any person is in violation of…”
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Source: EPA ECHO, civil enforcement case 09-2020-1506.
Full case history with a free Klarifi account
Every action against Lompoc Wastewater Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Capital improvement projects in Lompoc
Lompoc's capital improvement plan lists 23 water, sewer and wastewater line items worth $35M starting 2026–2027. The largest budgeted items are shown here.
All water and sewer capital projects in Lompoc →
| Project | Budget | Years |
|---|---|---|
| Wastewater Distribution System Renovation and Replacement Program | $20,700,000 | 2026–2031 |
| Headworks Improvement | $3,485,000 | 2026–2028 |
| Tank Asset Management Program | $3,045,000 | 2026–2031 |
| West Central Ave sewer pipeline and manhole replacement | $2,150,000 | 2026–2031 |
| Lime Slakers | $1,925,000 | 2026–2026 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
1 verified contact for Lompoc Wastewater Plant, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Lompoc Wastewater Plant, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in California
Oceano · 31 mi away
2.25 MGD
Pismo Beach · 34 mi away
1.01 MGD
Avila Beach · 39 mi away
0.07 MGD
Goleta · 40 mi away
4.28 MGD
San Luis Obispo · 42 mi away
5.6 MGD
San Luis Obispo · 47 mi away
0.76 MGD
Santa Barbara · 50 mi away
0.98 MGD
Morro Bay · 53 mi away
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Lompoc Wastewater Plant: frequently asked 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 October 26, 2026; facility record last updated March 18, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Filter press · FOG · all terms