SANDY HOOK WASTEWATER TREATMENT FACILITY

Address

18954 SANDY HOOK RD
KNOXVILLE, MD 21758
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County

WASHINGTON County

Inspections

2 · last Feb 24, 2026

Total Penalties

$0 · last May 21, 2007

Registry ID

110064243331

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.

6

Water (CWA)
Qtrs Non-Compliant

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	25.60 mg/L	1.90	+1,247%	Feb 2026	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	0.32 kg/d	0.15	+112%	Feb 2026	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	33.90 mg/L	6.20	+447%	Feb 2026	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	4.80 mg/L	1.90	+153%	Jan 2026	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	10.50 mg/L	6.20	+69%	Jan 2026	Open
Solids, total suspended	DMR, Limited - Numeric Violation	55.40 mg/L	45.00	+23%	Jun 2025	Open
Solids, total suspended	DMR, Limited - Numeric Violation	47.40 mg/L	45.00	+5%	Apr 2025	Open
Solids, total suspended	DMR, Limited - Numeric Violation	51.30 mg/L	45.00	+14%	Jan 2025	Open
Solids, total suspended	DMR, Limited - Numeric Violation	32.50 mg/L	30.00	+8%	Jan 2025	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	9.30 mg/L	6.20	+50%	Nov 2024	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	4.80 mg/L	1.90	+153%	Nov 2024	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	1.80 mg/L	1.60	+13%	Oct 2024	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	1.80 mg/L	1.60	+13%	May 2024	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	5.20 mg/L	1.60	+225%	Jun 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	0.14 kg/d	0.13	+7%	Jun 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	0.73 kg/d	0.64	+14%	Jun 2023	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	27.00 mg/L	8.10	+233%	Jun 2023	Open
Solids, total suspended	DMR, Limited - Numeric Violation	82.30 mg/L	45.00	+83%	Jul 2022	Open
Solids, total suspended	DMR, Limited - Numeric Violation	31.50 mg/L	30.00	+5%	Jul 2022	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	32.50 mg/L	6.20	+424%	Feb 2022	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	6.40 mg/L	1.90	+237%	Feb 2022	Open
Solids, total suspended	DMR, Limited - Numeric Violation	63.30 mg/L	45.00	+41%	Sep 2021	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	7.30 mg/L	6.20	+18%	Mar 2020	Open
Nitrogen, ammonia total [as N]	DMR, Limited - Numeric Violation	2.10 mg/L	1.90	+11%	Mar 2019	Open
Solids, total suspended	DMR, Limited - Numeric Violation	59.90 mg/L	45.00	+33%	May 2017	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	60.00 mg/L	30.00	+100%	May 2017	Open
BOD, 5-day, 20 deg. C	DMR, Limited - Numeric Violation	223.20 mg/L	45.00	+396%	May 2017	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 MD-PS-07-0528 · May 21, 2007

$8,265

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