Reg Treatment Plant
Terminated WDID 9 30I005779 Laguna Niguel, Orange County Region 9 · San Diego
At a glance
- Permit Evidence: SMARTS record
- Terminated Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Laguna Niguel, Orange County
- Region 9 · San Diego · Location · Statewide map
- Identified receiving water on the 2026 303(d) list
- Not established
- Shown only when the reported receiving water is identified and corroborated.
- 2026 Integrated Report waters within 1.0 km Evidence: geographic proximity
- 1 waterbody; 0 on the 2026 303(d) list
- Proximity only; not a discharge pathway · Nearby waterbodies
- Monitoring results Evidence: facility-reported
- 176 distinct results, 4 reporting years (2015 to 2019)
- Most recent sample Dec 23, 2019 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 3 inspections · 1 violation record · 1 enforcement action
- Counts as published in SMARTS; not a compliance determination · Details
Each label shows where a statement comes from. How to read the labels.
Overview and location
Reported facility location HUC12 watershed Corroborated receiving water 2026 Integrated Report waterbodies nearby
Reported location Evidence: facility-reported
- Coordinates
- 33.53662, -117.69907
- Precision
- 5 decimal places
- Shared point
- No
- Matches application record
- same
Facility location as reported by the discharger in SMARTS; not a discharge point or outfall.
- Facility address
- 29201 La Paz Rd, Laguna Niguel 92677
- Regional Water Board
- 9 — San Diego
HUC12 watershed Evidence: spatial
- Aliso Creek HUC12 180703010301
The facility's reported location lies within this HUC12 watershed (spatial derivation); it is not a discharge location.
Permits and applications Evidence: SMARTS record
Current permit record
- Permit type
- Industrial
- Application type
- Notice of Intent (WDID code I)
- Status
- Terminated
- Operator
- South Orange Cnty Wastewater Authority
- Primary industry (SIC)
- 4952-Sewerage Systems
- Application ID
- 214863
- NOI processed
- Apr 07, 1992
- Termination effective
- Jan 16, 2025
- Last certified
- Mar 09, 2017
- Facility size
- 12 Acres
- Impervious area
- 38 %
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 214863 | Industrial | Terminated | Apr 07, 1992 | Jan 16, 2025 | Mar 09, 2017 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Sulphur Creek Channel
- Discharges directly / indirectly
- N / Y (as answered in the permit application)
Evidence: not confirmed Not matchable to a single waterbody
Receiving-water text as reported by the discharger in SMARTS; no waterbody identification has been confirmed.
Impaired waters and TMDLs
Two kinds of information, kept apart: 2026 Integrated Report waterbodies near the reported location (geographic proximity only), and TMDL records that SMARTS lists for this facility. Neither establishes where the facility discharges; see Receiving water for the facility's own statement.
Nearby waterbodies Evidence: geographic proximity
Spatial proximity only; discharge pathway not established. Being near a waterbody does not mean the facility discharges to it.
| Waterbody (2026 Integrated Report) | Distance | 2026 303(d) list | Appendix A decisions |
|---|---|---|---|
| Laguna Niguel Park Lake (Sulpher Creek Reservoir) CAL9011300020190530035272 | 830 m | not listed | 0 |
Waterbodies within 1.0 km of the reported facility location. Method proximity/1.
SMARTS TMDL records Evidence: SMARTS-reported
No TMDL records for this facility in the SMARTS TMDL export.
Reported monitoring results Evidence: facility-reported
Numeric Action Level (NAL) screening is being independently validated and is not shown. Nothing on this page states whether a result exceeded a NAL.
176 distinct measurements across 9 parameters, most recent sample Dec 23, 2019.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2019 | 27 | 9 | 0 | Dec 23, 2019 | Dec 23, 2019 |
| 2018 | 27 | 9 | 0 | Feb 14, 2019 | Feb 14, 2019 |
| 2016 | 64 | 8 | 0 | Jan 09, 2017 | Feb 17, 2017 |
| 2015 | 58 | 8 | 0 | Dec 22, 2015 | Jan 31, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| Ammonia, Total (as N) | mg/L | 22 | 0 | Dec 22, 2015 | Dec 23, 2019 | Results |
| Nitrogen, Total (as N) | mg/L | 22 | 0 | Dec 22, 2015 | Dec 23, 2019 | Results |
| Oil and Grease | mg/L | 22 | 10 | Dec 22, 2015 | Dec 23, 2019 | Results |
| pH | SU | 22 | 0 | Dec 22, 2015 | Dec 23, 2019 | Results |
| Total Suspended Solids (TSS) | mg/L | 22 | 0 | Dec 22, 2015 | Dec 23, 2019 | Results |
| E.coli | MPN/100 mL | 20 | 7 | Dec 22, 2015 | Dec 23, 2019 | Results |
| Enterococci MPN | MPN/100 mL | 20 | 4 | Dec 22, 2015 | Dec 23, 2019 | Results |
| Phosphorus, Total (as P) | mg/L | 20 | 0 | Dec 22, 2015 | Dec 23, 2019 | Results |
| Nitrite Plus Nitrate (as N) | mg/L | 6 | 0 | Feb 14, 2019 | Dec 23, 2019 | Results |
All results (176 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Dec 23, 2019 | Ammonia, Total (as N) | 1.55 | mg/L | Effluent | Qualifying Storm Event | A4500NHC | 1106765 | |
| Dec 23, 2019 | Ammonia, Total (as N) | 2.7 | mg/L | Effluent | Qualifying Storm Event | A4500NHC | 1106765 | |
| Dec 23, 2019 | Ammonia, Total (as N) | 1.95 | mg/L | Effluent | Qualifying Storm Event | A4500NHC | 1106765 | |
| Dec 23, 2019 | E.coli | < 2000 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1106765 | |
| Dec 23, 2019 | E.coli | 8200 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1106765 | |
| Dec 23, 2019 | E.coli | 4000 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1106765 | |
| Dec 23, 2019 | Enterococci MPN | 1600 | MPN/100 mL | Effluent | Qualifying Storm Event | A9230B | 1106765 | |
| Dec 23, 2019 | Enterococci MPN | 11000 | MPN/100 mL | Effluent | Qualifying Storm Event | A9230B | 1106765 | |
| Dec 23, 2019 | Enterococci MPN | 46000 | MPN/100 mL | Effluent | Qualifying Storm Event | A9230B | 1106765 | |
| Dec 23, 2019 | Nitrite Plus Nitrate (as N) | 1.81 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1106765 | |
| Dec 23, 2019 | Nitrite Plus Nitrate (as N) | 5.69 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1106765 | |
| Dec 23, 2019 | Nitrite Plus Nitrate (as N) | 4.43 | mg/L | Effluent | Qualifying Storm Event | A4500NE | 1106765 | |
| Dec 23, 2019 | Nitrogen, Total (as N) | 1.81 | mg/L | Effluent | Qualifying Storm Event | A4500NB | 1106765 | |
| Dec 23, 2019 | Nitrogen, Total (as N) | 5.69 | mg/L | Effluent | Qualifying Storm Event | A4500NC | 1106765 | |
| Dec 23, 2019 | Nitrogen, Total (as N) | 4.43 | mg/L | Effluent | Qualifying Storm Event | A4500NB | 1106765 | |
| Dec 23, 2019 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | A5220B | 1106765 | |
| Dec 23, 2019 | Oil and Grease | 2.4 | mg/L | Effluent | Qualifying Storm Event | A5220B | 1106765 | |
| Dec 23, 2019 | Oil and Grease | 2.1 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1106765 | |
| Dec 23, 2019 | pH | 6.63 | SU | Effluent | Qualifying Storm Event | A4500HB | 1106765 | |
| Dec 23, 2019 | pH | 7.36 | SU | Effluent | Qualifying Storm Event | A4500HB | 1106765 | |
| Dec 23, 2019 | pH | 6.94 | SU | Effluent | Qualifying Storm Event | A4500HB | 1106765 | |
| Dec 23, 2019 | Phosphorus, Total (as P) | 1.05 | mg/L | Effluent | Qualifying Storm Event | A4500PE | 1106765 | |
| Dec 23, 2019 | Phosphorus, Total (as P) | 1.95 | mg/L | Effluent | Qualifying Storm Event | A4500PE | 1106765 | |
| Dec 23, 2019 | Phosphorus, Total (as P) | 1.15 | mg/L | Effluent | Qualifying Storm Event | A4500PE | 1106765 | |
| Dec 23, 2019 | Total Suspended Solids (TSS) | 4 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1106765 | |
| Dec 23, 2019 | Total Suspended Solids (TSS) | 28 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1106765 | |
| Dec 23, 2019 | Total Suspended Solids (TSS) | 70 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1106765 | |
| Feb 14, 2019 | Ammonia, Total (as N) | .48 | mg/L | Effluent | Qualifying Storm Event | A4500NH | 1054567 | |
| Feb 14, 2019 | Ammonia, Total (as N) | 5.5 | mg/L | Effluent | Qualifying Storm Event | A4500NH | 1054567 | |
| Feb 14, 2019 | Ammonia, Total (as N) | 4 | mg/L | Effluent | Qualifying Storm Event | A4500NH | 1054567 | |
| Feb 14, 2019 | E.coli | ND | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1054567 | |
| Feb 14, 2019 | E.coli | ND | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1054567 | |
| Feb 14, 2019 | E.coli | 1 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1054567 | |
| Feb 14, 2019 | Enterococci MPN | 1300 | MPN/100 mL | Effluent | Qualifying Storm Event | A9230B | 1054567 | |
| Feb 14, 2019 | Enterococci MPN | 24000 | MPN/100 mL | Effluent | Qualifying Storm Event | A9230B | 1054567 | |
| Feb 14, 2019 | Enterococci MPN | 22000 | MPN/100 mL | Effluent | Qualifying Storm Event | A9230B | 1054567 | |
| Feb 14, 2019 | Nitrite Plus Nitrate (as N) | 0 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1054567 | |
| Feb 14, 2019 | Nitrite Plus Nitrate (as N) | 0 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1054567 | |
| Feb 14, 2019 | Nitrite Plus Nitrate (as N) | 0 | mg/L | Effluent | Qualifying Storm Event | E300.0 | 1054567 | |
| Feb 14, 2019 | Nitrogen, Total (as N) | 4.3 | mg/L | Effluent | Qualifying Storm Event | A4500NB | 1054567 | |
| Feb 14, 2019 | Nitrogen, Total (as N) | 3.2 | mg/L | Effluent | Qualifying Storm Event | A4500NB | 1054567 | |
| Feb 14, 2019 | Nitrogen, Total (as N) | 5.02 | mg/L | Effluent | Qualifying Storm Event | A4500NB | 1054567 | |
| Feb 14, 2019 | Oil and Grease | < 2 | mg/L | Effluent | Qualifying Storm Event | A5220B | 1054567 | |
| Feb 14, 2019 | Oil and Grease | 2.7 | mg/L | Effluent | Qualifying Storm Event | A5220B | 1054567 | |
| Feb 14, 2019 | Oil and Grease | < 2 | mg/L | Effluent | Qualifying Storm Event | A5220B | 1054567 | |
| Feb 14, 2019 | pH | 7.9 | SU | Effluent | Qualifying Storm Event | A4500HB | 1054567 | |
| Feb 14, 2019 | pH | 7.8 | SU | Effluent | Qualifying Storm Event | A4500HB | 1054567 | |
| Feb 14, 2019 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | A4500HB | 1054567 | |
| Feb 14, 2019 | Phosphorus, Total (as P) | .2 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1054567 | |
| Feb 14, 2019 | Phosphorus, Total (as P) | .13 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1054567 |
Results are shown exactly as reported by the discharger. Identical rows repeated in the State's export are shown once. Where the export contains different versions of the same sample and parameter, each version is listed and flagged. Details.
Compliance and enforcement records Evidence: SMARTS record
These are records as the State Water Board publishes them in SMARTS, with the source's own types and statuses. They are not a compliance determination or rating. A record listed here is not proof of a violation beyond what the source states, and the absence of records does not establish compliance.
| Record type | Records | As published | Dates | Retrieved | List |
|---|---|---|---|---|---|
| Violations | 1 | 1 Violation · 0 Potential (preliminary) · 0 Dismissed | Nov 06, 2003 – Nov 06, 2003 | Oct 21, 2026 | All violations |
| Enforcement actions | 1 | 1 issued · 0 draft · 0 withdrawn, rescinded or superseded | Nov 06, 2003 – Nov 06, 2003 | Oct 21, 2026 | All actions |
| Inspections | 3 | inspections, not findings | Nov 06, 2003 – Oct 07, 2020 | Oct 21, 2026 | All inspections |
| Annual reports | 10 | certified reports (contents not shown) | 2015 – 2024 | Oct 21, 2026 | All reports |
| Water-quality-based corrective action reports | 0 | reports, by parameter | — | Oct 21, 2026 |
Each record type is counted by its own SMARTS identifier. A violation and the enforcement action that cites it are two records in two lists; they are never added together.
Chronological record history (15 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Jan 16, 2025 | Annual reports | 1296256 | Annual report 2024 | — | |
| Jul 11, 2024 | Annual reports | 1245456 | Annual report 2023 | — | |
| Jul 06, 2023 | Annual reports | 1191564 | Annual report 2022 | — | |
| Jul 12, 2022 | Annual reports | 1115140 | Annual report 2021 | — | |
| Jul 14, 2021 | Annual reports | 1063234 | Annual report 2020 | — | |
| Oct 07, 2020 | Inspections | 2049150 | B Type compliance | Performed | No Further Action |
| Jul 14, 2020 | Annual reports | 980111 | Annual report 2019 | — | |
| Jul 11, 2019 | Annual reports | 956366 | Annual report 2018 | — | |
| Aug 22, 2018 | Inspections | 2039332 | B Type compliance | — | No Further Action |
| Jun 28, 2018 | Annual reports | 941793 | Annual report 2017 | — | |
| Jun 28, 2017 | Annual reports | 881194 | Annual report 2016 | — | |
| Jun 30, 2016 | Annual reports | 845800 | Annual report 2015 | — | |
| Nov 06, 2003 | Enforcement actions | 250588 | NTC (Notice to Comply) | Historical | UNKNOWN |
| Nov 06, 2003 | Inspections | 332132 | B Type compliance | — | |
| Nov 06, 2003 | Violations | 241935 | Deficient BMP Implementation | Violation | Inspection |
Sources and provenance
| Information | Source | Retrieved or published |
|---|---|---|
| Permit, location, receiving-water text | SMARTS Industrial Application Specific Data | Oct 20, 2026 |
| Permit history | SMARTS Storm Water Applications | Oct 20, 2026 |
| Monitoring results | SMARTS Industrial Parameter Data | Oct 20, 2026 |
| Watershed Boundary Dataset HU2 GeoPackages 15, 16, 18 (WBDHU12) | USGS | 2026-10-22 |
| 2026 California Integrated Report, Appendix A: 2026 303(d) List (final) | SWRCB | 2026-10-22 |
| Final_2026_Rivers_and_Streams + Final_2026_Lakes_and_Reservoirs (FeatureServer 0) | SWRCB GIS | 2026-10-22 |
| SMARTS TMDL requirements | SMARTS | 2026-10-21 |
Relationships computed 2026-10-22 with methods facility_huc12/1, proximity/1, receiving_water/2, tmdl_reference/1, waterbody_huc12_ovl/1, waterbody_huc12_pub/1; proximity threshold 1.0 km.
How to read the evidence labels
- Evidence: SMARTS record Evidence: facility-reported Information as published in SMARTS or reported by the discharger.
- Evidence: identification corroborated The reported receiving-water name identifies one official waterbody and the facility's location is consistent with it. It does not establish a discharge pathway.
- Evidence: candidate, awaiting review Evidence: not confirmed The reported name could match one or more official waterbodies, but no identification has been confirmed; nothing is assigned without review.
- Evidence: spatial Evidence: geographic proximity Derived from the reported location only.
- Evidence: SMARTS-reported Source records whose links to official references are not yet reviewed.
- Evidence: unavailable The information could not be loaded or is not in the sources.
Records are shown as published and are not compliance determinations. How geographic context is derived.