Mariposa Cnty Landfill
Active WDID 5F22I001119 Mariposa, Mariposa County Region 5F · Central Valley (Fresno)
At a glance
- Permit Evidence: SMARTS record
- Active Industrial
- Notice of Intent (WDID code I) · Permits and applications
- Location Evidence: facility-reported
- Mariposa, Mariposa County
- Region 5F · Central Valley (Fresno) · 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
- 313 distinct results, 7 reporting years (2015 to 2021)
- Most recent sample Oct 25, 2021 · Monitoring
- Compliance and enforcement records Evidence: SMARTS record
- 1 inspection · 4 violation records · 5 enforcement actions
- 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
- 37.50546, -119.99603
- 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
- 5593 State Highway 49 N, Mariposa 95338
- Regional Water Board
- 5F — Central Valley (Fresno)
HUC12 watershed Evidence: spatial
- Stockton Creek-Mariposa Creek HUC12 180400011502
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
- Active
- Operator
- Mariposa Cnty
- Primary industry (SIC)
- 4953-Refuse Systems
- Application ID
- 196454
- NOI processed
- Mar 25, 1992
- Last certified
- Aug 21, 2026
- Facility size
- 59 Acres
Retrieved from SMARTS Oct 20, 2026. Verify against SMARTS before relying on it.
Permit history
| Application | Type | Status | Processed | Terminated | Certified |
|---|---|---|---|---|---|
| 196454 | Industrial | Active | Mar 25, 1992 | — | Aug 21, 2026 |
Every storm water application SMARTS records for this WDID, newest first (1).
Receiving water
- Reported by the facility Evidence: facility-reported
- Horse Gulch
- Discharges directly / indirectly
- N / N (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 |
|---|---|---|---|
| Mariposa Creek above Mariposa Reservoir CAR5380002020190903032078 | 513 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.
313 distinct measurements across 20 parameters, most recent sample Oct 25, 2021.
By reporting year
| Reporting year (July–June) | Distinct results | Parameters | With several versions | First sample | Last sample |
|---|---|---|---|---|---|
| 2021 | 22 | 11 | 0 | Oct 25, 2021 | Oct 25, 2021 |
| 2020 | 37 | 13 | 0 | Dec 28, 2020 | Jan 27, 2021 |
| 2019 | 44 | 15 | 0 | Dec 04, 2019 | Mar 23, 2020 |
| 2018 | 54 | 9 | 0 | Nov 29, 2018 | Feb 13, 2019 |
| 2017 | 46 | 10 | 0 | Mar 02, 2018 | Mar 16, 2018 |
| 2016 | 68 | 9 | 0 | Dec 08, 2016 | Mar 21, 2017 |
| 2015 | 42 | 8 | 0 | Nov 02, 2015 | Apr 22, 2016 |
By parameter
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| pH | SU | 35 | 0 | Nov 02, 2015 | Oct 25, 2021 | Results |
| Oil and Grease | mg/L | 34 | 27 | Nov 02, 2015 | Oct 25, 2021 | Results |
| Total Suspended Solids (TSS) | mg/L | 32 | 2 | Nov 02, 2015 | Oct 25, 2021 | Results |
| Chemical Oxygen Demand (COD) | mg/L | 28 | 0 | Dec 08, 2016 | Oct 25, 2021 | Results |
| Iron, Total Recoverable | ug/L | 26 | 0 | Nov 02, 2015 | Mar 23, 2020 | Results |
| Chlorpyrifos | ug/L | 24 | 24 | Feb 06, 2017 | Oct 25, 2021 | Results |
| Aluminum, Total Recoverable | ug/L | 21 | 0 | Dec 08, 2016 | Mar 23, 2020 | Results |
| Lead, Total Recoverable | ug/L | 21 | 8 | Dec 08, 2016 | Mar 23, 2020 | Results |
| Zinc, Total Recoverable | ug/L | 21 | 3 | Dec 08, 2016 | Mar 23, 2020 | Results |
| Total Coliform | MPN/100 mL | 9 | 0 | Dec 04, 2019 | Oct 25, 2021 | Results |
| Iron, Total | mg/L | 8 | 0 | Nov 02, 2015 | Oct 25, 2021 | Results |
| Aluminum, Total | mg/L | 7 | 1 | Dec 04, 2019 | Oct 25, 2021 | Results |
Show 8 more parameters
| Parameter | Units | Measurements | Below detection | First sample | Last sample | Results |
|---|---|---|---|---|---|---|
| E.coli | MPN/100 mL | 7 | 0 | Mar 02, 2018 | Oct 25, 2021 | Results |
| Lead, Total | mg/L | 7 | 6 | Dec 04, 2019 | Oct 25, 2021 | Results |
| Zinc, Total | mg/L | 7 | 0 | Dec 04, 2019 | Oct 25, 2021 | Results |
| Biochemical Oxygen Demand (BOD) (5-day @ 20 Deg. C) | mg/L | 6 | 0 | Nov 02, 2015 | Apr 22, 2016 | Results |
| Electrical Conductivity @ 25 Deg. C | umhos/cm | 6 | 0 | Nov 02, 2015 | Apr 22, 2016 | Results |
| Total Organic Carbon (TOC) | mg/L | 6 | 0 | Nov 02, 2015 | Apr 22, 2016 | Results |
| Fecal Coliform | MPN/100 mL | 5 | 0 | Dec 04, 2019 | Dec 28, 2020 | Results |
| Enterococci MPN | MPN/100 mL | 3 | 0 | Dec 28, 2020 | Jan 27, 2021 | Results |
All results (313 distinct rows)
| Sample date | Parameter | Result | Units | Location type | Event | Method | Report | Versions |
|---|---|---|---|---|---|---|---|---|
| Oct 25, 2021 | Aluminum, Total | 6.8 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1170594 | |
| Oct 25, 2021 | Aluminum, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1170594 | |
| Oct 25, 2021 | Chemical Oxygen Demand (COD) | 300 | mg/L | Effluent | Qualifying Storm Event | A5220D | 1170594 | |
| Oct 25, 2021 | Chemical Oxygen Demand (COD) | 190 | mg/L | Effluent | Qualifying Storm Event | A5220D | 1170594 | |
| Oct 25, 2021 | Chlorpyrifos | ND | ug/L | Effluent | Qualifying Storm Event | 1170594 | ||
| Oct 25, 2021 | Chlorpyrifos | ND | ug/L | Effluent | Qualifying Storm Event | 1170594 | ||
| Oct 25, 2021 | E.coli | > 1600 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1170594 | |
| Oct 25, 2021 | E.coli | > 1600 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1170594 | |
| Oct 25, 2021 | Iron, Total | 13 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1170594 | |
| Oct 25, 2021 | Iron, Total | .14 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1170594 | |
| Oct 25, 2021 | Lead, Total | .0082 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1170594 | |
| Oct 25, 2021 | Lead, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1170594 | |
| Oct 25, 2021 | Oil and Grease | 1.3 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1170594 | |
| Oct 25, 2021 | Oil and Grease | 1.2 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1170594 | |
| Oct 25, 2021 | pH | 7.4 | SU | Effluent | Qualifying Storm Event | A4500HB | 1170594 | |
| Oct 25, 2021 | pH | 7.7 | SU | Effluent | Qualifying Storm Event | A4500HB | 1170594 | |
| Oct 25, 2021 | Total Coliform | > 1600 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1170594 | |
| Oct 25, 2021 | Total Coliform | > 1600 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1170594 | |
| Oct 25, 2021 | Total Suspended Solids (TSS) | 320 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1170594 | |
| Oct 25, 2021 | Total Suspended Solids (TSS) | 18 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1170594 | |
| Oct 25, 2021 | Zinc, Total | .061 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1170594 | |
| Oct 25, 2021 | Zinc, Total | .019 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1170594 | |
| Jan 27, 2021 | Aluminum, Total | 1.8 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1143952 | |
| Jan 27, 2021 | Aluminum, Total | .18 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1143962 | |
| Jan 27, 2021 | Chemical Oxygen Demand (COD) | 87 | mg/L | Effluent | Qualifying Storm Event | A5220D | 1143952 | |
| Jan 27, 2021 | Chemical Oxygen Demand (COD) | 88 | mg/L | Effluent | Qualifying Storm Event | A5220D | 1143962 | |
| Jan 27, 2021 | Chlorpyrifos | ND | ug/L | Effluent | Qualifying Storm Event | 1143952 | ||
| Jan 27, 2021 | Chlorpyrifos | ND | ug/L | Effluent | Qualifying Storm Event | 1143962 | ||
| Jan 27, 2021 | E.coli | > 1600 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1143952 | |
| Jan 27, 2021 | E.coli | > 1600 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1143962 | |
| Jan 27, 2021 | Enterococci MPN | > 2420 | MPN/100 mL | Effluent | Qualifying Storm Event | 650399 | 1143952 | |
| Jan 27, 2021 | Enterococci MPN | > 2420 | MPN/100 mL | Effluent | Qualifying Storm Event | 650399 | 1143962 | |
| Jan 27, 2021 | Iron, Total | 3.9 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1143952 | |
| Jan 27, 2021 | Iron, Total | .35 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1143962 | |
| Jan 27, 2021 | Lead, Total | DNQ .0034 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1143952 | |
| Jan 27, 2021 | Lead, Total | ND | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1143962 | |
| Jan 27, 2021 | Oil and Grease | ND | mg/L | Effluent | Qualifying Storm Event | E1664A | 1143952 | |
| Jan 27, 2021 | Oil and Grease | DNQ .89 | mg/L | Effluent | Qualifying Storm Event | E1664A | 1143962 | |
| Jan 27, 2021 | pH | 8 | SU | Effluent | Qualifying Storm Event | A4500HB | 1143952 | |
| Jan 27, 2021 | pH | 7.2 | SU | Effluent | Qualifying Storm Event | A4500HB | 1143962 | |
| Jan 27, 2021 | Total Coliform | > 1600 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1143952 | |
| Jan 27, 2021 | Total Coliform | > 1600 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1143962 | |
| Jan 27, 2021 | Total Suspended Solids (TSS) | 54 | mg/L | Effluent | Qualifying Storm Event | 1143952 | ||
| Jan 27, 2021 | Total Suspended Solids (TSS) | 5 | mg/L | Effluent | Qualifying Storm Event | A2540D | 1143962 | |
| Jan 27, 2021 | Zinc, Total | .035 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1143952 | |
| Jan 27, 2021 | Zinc, Total | .016 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1143962 | |
| Dec 28, 2020 | Aluminum, Total | .79 | mg/L | Effluent | Qualifying Storm Event | E200.7 | 1141298 | |
| Dec 28, 2020 | Chemical Oxygen Demand (COD) | 75 | mg/L | Effluent | Qualifying Storm Event | A5220D | 1141298 | |
| Dec 28, 2020 | Chlorpyrifos | ND | ug/L | Effluent | Qualifying Storm Event | 1141298 | ||
| Dec 28, 2020 | E.coli | 920 | MPN/100 mL | Effluent | Qualifying Storm Event | A9221B | 1141298 |
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 | 4 | 4 Violation · 0 Potential (preliminary) · 0 Dismissed | Feb 04, 2004 – Jul 16, 2026 | Oct 21, 2026 | All violations |
| Enforcement actions | 5 | 5 issued · 0 draft · 0 withdrawn, rescinded or superseded | Mar 29, 2004 – Jul 22, 2026 | Oct 21, 2026 | All actions |
| Inspections | 1 | inspections, not findings | Feb 04, 2004 – Feb 04, 2004 | Oct 21, 2026 | All inspections |
| Annual reports | 10 | certified reports (contents not shown) | 2015 – 2025 | 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 (20 records, newest first)
| Date | Record | ID | Type or purpose | Status as published | Detail |
|---|---|---|---|---|---|
| Aug 12, 2026 | Annual reports | 1336558 | Annual report 2025 | — | |
| Jul 22, 2026 | Enforcement actions | 470522 | NOV (Notice of Violation) | Active | |
| Jul 16, 2026 | Violations | 904599 | Late Report | Violation | Report |
| Aug 21, 2025 | Annual reports | 1295424 | Annual report 2024 | — | |
| Aug 08, 2025 | Enforcement actions | 457222 | NOV (Notice of Violation) | Active | |
| Jul 31, 2025 | Annual reports | 1244571 | Annual report 2023 | — | |
| Jul 15, 2025 | Violations | 892693 | Late Report | Violation | Report |
| Jul 11, 2022 | Annual reports | 1114137 | Annual report 2021 | — | |
| Jul 13, 2021 | Annual reports | 1070213 | Annual report 2020 | — | |
| Jul 13, 2020 | Annual reports | 987587 | Annual report 2019 | — | |
| Jul 03, 2019 | Annual reports | 955203 | Annual report 2018 | — | |
| Jul 12, 2018 | Annual reports | 940623 | Annual report 2017 | — | |
| Jul 14, 2017 | Annual reports | 879964 | Annual report 2016 | — | |
| Jul 15, 2016 | Annual reports | 847214 | Annual report 2015 | — | |
| Apr 03, 2012 | Enforcement actions | 408449 | SEL (Staff Enforcement Letter) | Historical | |
| Sep 08, 2010 | Enforcement actions | 405559 | NNC (Notice of Non-Compliance) | Historical | |
| Mar 29, 2004 | Enforcement actions | 251881 | NOV (Notice of Violation) | Historical | UNKNOWN |
| Feb 04, 2004 | Inspections | 333758 | Non-compliance Follow-up | — | |
| Feb 04, 2004 | Violations | 251905 | Deficient BMP Implementation | Violation | Inspection |
| Feb 04, 2004 | Violations | 251906 | 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.