Non-Compliance Clean Water Act

LRWS YEMASSEE WWTP

Quick Summary

•Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
•Assessed $4,200 in total penalties since records began.

Address: 1 MILE N. OF TOWN
YEMASSEE, SC 29945
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County: HAMPTON County
Industry: Utilities
NAICS (North American Industry Classification): 221320
Inspections: 3 · last Apr 2, 2025
Total Penalties: $4,200 · last Dec 15, 2022
Registry ID: 110009794133

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.

Water (CWA)
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	Management Practice Violations - Improper Operation and Maintenance	Oct 16, 2018	—	Open
cwa	Management Practice Violations - Improper Operation and Maintenance	Mar 7, 2016	—	Open
cwa	Management Practice Violations - Improper Operation and Maintenance	Apr 27, 2015	—	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
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	20.50 mg/L	15.00	+37%	Jan 2026	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	24.00 mg/L	22.50	+7%	Jan 2026	Open
Oxygen demand, ultimate	DMR, Limited - Numeric Violation	110.94 kg/d	105.60	+5%	Aug 2025	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	35.40 mg/L	22.50	+57%	May 2025	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	31.05 mg/L	15.00	+107%	May 2025	Resolved
Oxygen demand, ultimate	DMR, Limited - Numeric Violation	116.79 kg/d	105.60	+11%	Apr 2025	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	30.60 mg/L	15.00	+104%	Apr 2025	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	38.60 mg/L	22.50	+72%	Apr 2025	Open
Oxygen demand, ultimate	DMR, Limited - Numeric Violation	111.84 kg/d	105.60	+6%	Mar 2025	Open
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	DMR, Limited - Numeric Violation	49.00 %	40.00	+23%	Mar 2025	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	23.60 mg/L	22.50	+5%	Mar 2025	Open
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	DMR, Limited - Numeric Violation	49.00 %	25.00	+96%	Mar 2025	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	23.30 mg/L	15.00	+55%	Mar 2025	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	22.40 mg/L	15.00	+49%	Feb 2025	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	26.20 mg/L	22.50	+16%	Feb 2025	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	22.20 mg/L	15.00	+48%	Jan 2025	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	23.00 mg/L	22.50	+2%	Jan 2025	Open
Carbonaceous oxygen demand, % removal	DMR, Limited - Numeric Violation	76.52 %	85.00	+57%	Jan 2025	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	18.10 mg/L	15.00	+21%	Oct 2024	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	18.85 mg/L	15.00	+26%	Sep 2024	Resolved
Oxygen demand, ultimate	DMR, Limited - Numeric Violation	106.48 kg/d	105.60	+1%	Aug 2024	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	32.40 mg/L	15.00	+116%	Jul 2024	Resolved
Oxygen demand, ultimate	DMR, Limited - Numeric Violation	157.40 kg/d	105.60	+49%	Jul 2024	Open
Oxygen demand, ultimate	DMR, Limited - Numeric Violation	120.31 kg/d	105.60	+14%	Jul 2024	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	38.60 mg/L	22.50	+72%	Jul 2024	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	29.00 mg/L	15.00	+93%	Jun 2024	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	30.60 mg/L	22.50	+36%	Jun 2024	Open
Solids, suspended percent removal	DMR, Limited - Numeric Violation	10.00 %	65.00	+157%	Apr 2024	Open
E. coli	DMR, Limited - Numeric Violation	139.00 MPN/100mL	126.00	+10%	Mar 2024	Open
Solids, suspended percent removal	DMR, Limited - Numeric Violation	54.00 %	65.00	+31%	Mar 2024	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	17.00 mg/L	15.00	+13%	Jan 2024	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	23.80 mg/L	22.50	+6%	Jan 2024	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	20.00 mg/L	15.00	+33%	Dec 2023	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	26.00 mg/L	22.50	+16%	Dec 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	27.00 mg/L	15.00	+80%	Nov 2023	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	29.60 mg/L	22.50	+32%	Nov 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	26.00 mg/L	15.00	+73%	Oct 2023	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	33.00 mg/L	22.50	+47%	Oct 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	28.00 mg/L	22.50	+24%	Sep 2023	Open
E. coli	DMR, Limited - Numeric Violation	139.40 MPN/100mL	126.00	+11%	Sep 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	21.00 mg/L	15.00	+40%	Sep 2023	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	25.00 mg/L	22.50	+11%	Aug 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	24.00 mg/L	15.00	+60%	Aug 2023	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	33.00 mg/L	15.00	+120%	Jul 2023	Resolved
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	41.20 mg/L	22.50	+83%	Jul 2023	Open
Oxygen demand, ultimate	DMR, Limited - Numeric Violation	140.74 kg/d	105.60	+33%	Jun 2023	Open
Oxygen demand, ultimate	DMR, Limited - Numeric Violation	128.03 kg/d	105.60	+21%	Jun 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	30.00 mg/L	22.50	+33%	Jun 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	25.00 mg/L	15.00	+67%	Jun 2023	Resolved
Oxygen demand, ultimate	DMR, Limited - Numeric Violation	116.22 kg/d	105.60	+10%	May 2023	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.