Non-Compliance
Clean Water Act
SEWER AUTHORITY MID-COASTSIDE
Quick Summary
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $78,000 in total penalties since records began.
- Address
-
1000 NORTH CABRILLO HIGHWAY
HALF MOON BAY, CA 94019
View on map ↗ - County
- SAN MATEO County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221320
- Inspections
- 3 · last Jun 12, 2025
- Total Penalties
- $78,000 · last Oct 25, 2022
- Registry ID
- 110000730601
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
8
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| cwa | Permit Violations - Violation Specified in Comment | Dec 31, 2024 | — | Open |
| cwa | Permit Violations - Violation Specified in Comment | Dec 7, 2024 | — | Open |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 33.80 mg/L | 30.00 | +13% | Dec 2024 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 5.00 mg/L | 4.80 | +4% | Jan 2023 | Open |
| BOD, 5-day, percent removal | DMR, Limited - Numeric Violation | 95.52 % | 85.00 | +99,999% | May 2022 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 51.10 mg/L | 45.00 | +14% | Jul 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 111.64 mg/L | 30.00 | +272% | Jul 2021 | Resolved |
| Solids, total suspended | DMR, Limited - Numeric Violation | 111.64 mg/L | 45.00 | +148% | Jul 2021 | Open |
| Solids, suspended percent removal | DMR, Limited - Numeric Violation | 60.50 % | 85.00 | +163% | Jul 2021 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 51.10 mg/L | 30.00 | +70% | Jul 2021 | Open |
| Solids, suspended percent removal | DMR, Limited - Numeric Violation | 71.50 % | 85.00 | +90% | Jun 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 82.33 mg/L | 45.00 | +83% | Jun 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 82.33 mg/L | 30.00 | +174% | Jun 2021 | Resolved |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 37.10 mg/L | 30.00 | +24% | Jun 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 63.00 mg/L | 45.00 | +40% | Apr 2021 | Open |
| Enterococci | DMR, Limited - Numeric Violation | 24,196.00 MPN/100mL | 8,300.00 | +192% | Apr 2021 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 75.57 mg/L | 45.00 | +68% | Jan 2021 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 106.00 mg/L | 45.00 | +136% | Jan 2021 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 46.10 mg/L | 30.00 | +54% | Nov 2020 | Resolved |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 46.10 mg/L | 45.00 | +2% | Nov 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 46.90 mg/L | 45.00 | +4% | Oct 2020 | Open |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 81.80 mg/L | 30.00 | +173% | Oct 2020 | Resolved |
| BOD, 5-day, 20 deg. C | DMR, Limited - Numeric Violation | 81.80 mg/L | 45.00 | +82% | Oct 2020 | Open |
| Solids, total suspended | DMR, Limited - Numeric Violation | 46.90 mg/L | 30.00 | +56% | Oct 2020 | Open |
| Chlorine, total residual | DMR, Limited - Numeric Violation | 5.20 mg/L | 4.80 | +8% | Apr 2018 | Open |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.
State CWA Penalty AO
Clean Water Act
· Case CA-N00001178
State CWA Penalty AO
Clean Water Act
· Case CA-CFEA448319 · Oct 25, 2022
$78,000
State CWA Penalty AO
Clean Water Act
· Case CA-2008-1040 · Jul 24, 2008
State CWA Penalty AO
Clean Water Act
· Case CA-N00000889 · Nov 5, 2001
State CWA Penalty AO
Clean Water Act
· Case CA-N00000888 · Mar 21, 2001
State CWA Non Penalty AO
Clean Water Act
· Case CA-N00002708 · Mar 15, 2000
State CWA Non Penalty AO
Clean Water Act
· Case CA-N00001179 · Dec 16, 1998
State CWA Non Penalty AO
Clean Water Act
· Case CA-N00002094 · Jul 19, 1995
CWA 309A AO For Compliance
Clean Water Act
· Case 09-1995-N002 · Nov 29, 1994
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