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Mount Holly TWP Mua

Sewage treatment plant, major discharger, Mount Holly Twp, New Jersey. NPDES permit NJ0024015, in force until Mar 31, 2030. Last 12 months: over a limit 2 times (last March 2026), 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 26 days after each period: form A monthly (77 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
February 2026Zinc, total recoverable, daily maximum220 ug/L≤ 182 ug/L21%
March 2026Zinc, total recoverable, daily maximum210 ug/L≤ 182 ug/L15%

Limits in force (81)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademinimumreport only (deg C)all year
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigrademaximumreport only (deg C)all year
Temperature, water deg. centigrademinimumreport only (deg C)all year
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigrademaximumreport only (deg C)all year
Temperature, water deg. centigrademinimumreport only (deg C)all year
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigrademaximumreport only (deg C)all year
Color [PT-CO units]monthly averagereport only (col unit (pc))all year
Color [PT-CO units]instantaneous maximumreport only (col unit (pc))all year
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/Lall year
pHinstantaneous minimum≥ 6 SUall year
pHinstantaneous maximum≤ 9 SUall year
pHinstantaneous minimumreport only (SU)all year
pHinstantaneous maximumreport only (SU)all year
pHinstantaneous minimumreport only (SU)all year
pHinstantaneous maximumreport only (SU)all year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 568 kg/dall year
Solids, total suspendedweekly average≤ 852 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendedmonthly average minimum≥ 85 %all year
Oil & Greasemonthly average≤ 10 mg/Lall year
Oil & Greaseinstantaneous maximum≤ 15 mg/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 35 mg/Lall year
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly averagereport only (kg/d)all year
Nitrogen, ammonia total [as N]daily maximumreport only (kg/d)all year
Nitrogen, nitrate total [as N]monthly averagereport only (mg/L)all year
Nitrogen, nitrate total [as N]daily maximumreport only (mg/L)all year
Nitrogen, nitrate total [as N]monthly averagereport only (kg/d)all year
Nitrogen, nitrate total [as N]daily maximumreport only (kg/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]weekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (kg/d)all year
Phosphorus, total [as P]weekly averagereport only (kg/d)all year
Cyanide, total [as CN]monthly averagereport only (ug/L)all year
Cyanide, total [as CN]daily maximumreport only (ug/L)all year
Cyanide, total [as CN]monthly averagereport only (g/d)all year
Cyanide, total [as CN]daily maximumreport only (g/d)all year
Silver total recoverablemonthly averagereport only (ug/L)all year
Silver total recoverabledaily maximumreport only (ug/L)all year
Silver total recoverablemonthly averagereport only (g/d)all year
Silver total recoverabledaily maximumreport only (g/d)all year
Zinc, total recoverablemonthly averagereport only (ug/L)all year
Zinc, total recoverabledaily maximum≤ 182 ug/Lall year
Zinc, total recoverablemonthly averagereport only (g/d)all year
Zinc, total recoverabledaily maximum≤ 3440 g/dall year
Copper, total recoverablemonthly averagereport only (ug/L)all year
Copper, total recoverabledaily maximum≤ 102 ug/Lall year
Copper, total recoverablemonthly averagereport only (g/d)all year
Copper, total recoverabledaily maximum≤ 1930 g/dall year
Flow, in conduit or thru treatment plantindividual rolling averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Peracetic Acidmonthly averagereport only (mg/L)all year
Peracetic Aciddaily maximumreport only (mg/L)all year
Solids, total dissolvedmonthly averagereport only (mg/L)all year
Solids, total dissolveddaily maximum≤ 1000 mg/Lall year
Mercury, total recoverablemonthly averagereport only (ug/L)all year
Mercury, total recoverabledaily maximumreport only (ug/L)all year
Mercury, total recoverablemonthly averagereport only (g/d)all year
Mercury, total recoverabledaily maximum≤ 322 g/dall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 22.5 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 473 kg/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 284 kg/dMay–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 757 kg/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 426 kg/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly average minimum≥ 88.5 %all year
LC50 Static 48Hr Acute Ceriodaphnia dubiaminimumreport only (%)all year
IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimumreport only (%)all year

New limits from Apr 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Cyanide, total [as CN], daily maximum48826 g/dnew73.32 g/d (12 values, 2 below detection)0.0015×
Cyanide, total [as CN], daily maximum2580 ug/Lnew6.3 ug/L (12 values, 2 below detection)0.00244×
Cyanide, total [as CN], monthly average30469 g/dnew73.32 g/d (12 values, 2 below detection)0.00241×
Cyanide, total [as CN], monthly average1610 ug/Lnew6.3 ug/L (12 values, 2 below detection)0.00391×

How strict are these limits?

Cited limits by parameter: New Jersey's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/NJ0024015 · MCP: https://passage-data.com/mcp