Ypsilanti Community Utilities Authority — NPDES permit MI0042676: limits, due date and EPA's record

Sewage treatment plant, major discharger, Ypsilanti, Michigan. NPDES permit MI0042676 expired Oct 1, 2026; its limits still apply. Last 12 months: no values over a limit, 4 required values missing, 2 of 33 reports late. Source: EPA ECHO, Oct 22, 2026.

Limits in force (257)

Parameter	Statistic	Limit	Months	Outfall
Oxygen, dissolved [DO]	daily minimum	≥ 6 mg/L	Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec	001
Oxygen, dissolved [DO]	daily minimum	≥ 7 mg/L	Apr	001
Oxygen, dissolved [DO]	daily minimum	≥ 7 mg/L	Apr	001
Oxygen, dissolved [DO]	daily minimum	≥ 6 mg/L	Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec	001
pH	daily minimum	≥ 6.5 SU	all year	001
pH	daily minimum	≥ 6.5 SU	all year	001
pH	daily maximum	≤ 9 SU	all year	001
pH	daily maximum	≤ 9 SU	all year	001
Solids, total suspended	monthly average	= 20 mg/L	all year	001
Solids, total suspended	daily maximum	= 30 mg/L	all year	001
Solids, total suspended	monthly average	= 8500 lb/d	all year	001
Solids, total suspended	daily maximum	= 13000 lb/d	all year	001
Solids, total suspended	monthly average	≤ 20 mg/L	all year	001
Solids, total suspended	7-day average	≤ 30 mg/L	all year	001
Solids, total suspended	monthly average	≤ 8500 lb/d	all year	001
Solids, total suspended	7-day average	≤ 13000 lb/d	all year	001
Nitrogen, ammonia total [as N]	monthly average	= .5 mg/L	May–Oct	001
Nitrogen, ammonia total [as N]	monthly average	= 9 mg/L	Nov	001
Nitrogen, ammonia total [as N]	monthly average	= 12 mg/L	Jan, Feb, Mar, Dec	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 2 mg/L	May–Oct	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.6 mg/L	Apr	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 9.9 mg/L	Nov	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 17 mg/L	Jan, Feb, Mar, Dec	001
Nitrogen, ammonia total [as N]	monthly average	= 210 lb/d	May–Oct	001
Nitrogen, ammonia total [as N]	7-day average	= 2400 lb/d	Apr	001
Nitrogen, ammonia total [as N]	monthly average	= 3800 lb/d	Nov	001
Nitrogen, ammonia total [as N]	monthly average	= 5100 lb/d	Jan, Feb, Mar, Dec	001
Nitrogen, ammonia total [as N]	7-day average	= 850 lb/d	May–Oct	001
Nitrogen, ammonia total [as N]	7-day average	= 4200 lb/d	Nov	001
Nitrogen, ammonia total [as N]	7-day average	= 7300 lb/d	Jan, Feb, Mar, Dec	001
Nitrogen, ammonia total [as N]	monthly average	≤ .5 mg/L	May–Oct	001
Nitrogen, ammonia total [as N]	monthly average	≤ 12 mg/L	Jan, Feb, Mar, Dec	001
Nitrogen, ammonia total [as N]	monthly average	≤ 9 mg/L	Nov	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 2 mg/L	May–Oct	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.6 mg/L	Apr	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 17 mg/L	Jan, Feb, Mar, Dec	001
Nitrogen, ammonia total [as N]	daily maximum	≤ 9.9 mg/L	Nov	001
Nitrogen, ammonia total [as N]	monthly average	≤ 210 lb/d	May–Oct	001
Nitrogen, ammonia total [as N]	monthly average	≤ 5100 lb/d	Jan, Feb, Mar, Dec	001
Nitrogen, ammonia total [as N]	monthly average	≤ 3800 lb/d	Nov	001
Nitrogen, ammonia total [as N]	7-day average	≤ 850 lb/d	May–Oct	001
Nitrogen, ammonia total [as N]	7-day average	≤ 2400 lb/d	Apr	001
Nitrogen, ammonia total [as N]	7-day average	≤ 7300 lb/d	Jan, Feb, Mar, Dec	001
Nitrogen, ammonia total [as N]	7-day average	≤ 4200 lb/d	Nov	001
Phosphorus, total [as P]	monthly average	≤ .7 mg/L	May–Aug	001
Phosphorus, total [as P]	monthly average	= .8 mg/L	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	001
Phosphorus, total [as P]	monthly average	= .7 mg/L	May–Aug	001
Phosphorus, total [as P]	monthly average	≤ .8 mg/L	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	001
Phosphorus, total [as P]	daily maximum	report only (mg/L)	May–Aug	001
Phosphorus, total [as P]	daily maximum	report only (mg/L)	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	001
Phosphorus, total [as P]	daily maximum	report only (mg/L)	May–Aug	001
Phosphorus, total [as P]	daily maximum	report only (mg/L)	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	001
Phosphorus, total [as P]	monthly average	≤ 300 lb/d	May–Aug	001
Phosphorus, total [as P]	monthly average	= 340 lb/d	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	001
Phosphorus, total [as P]	monthly average	= 300 lb/d	May–Aug	001
Phosphorus, total [as P]	monthly average	≤ 340 lb/d	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	001
Phosphorus, total [as P]	daily maximum	report only (lb/d)	May–Aug	001
Phosphorus, total [as P]	daily maximum	report only (lb/d)	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	001
Phosphorus, total [as P]	daily maximum	report only (lb/d)	May–Aug	001
Phosphorus, total [as P]	daily maximum	report only (lb/d)	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	001
Phosphorus, total [as P]	rolling average	= .6 mg/L	May–Aug	001
Phosphorus, total [as P]	rolling average	≤ .6 mg/L	May–Aug	001
Phosphorus, total [as P]	rolling average	= 260 lb/d	May–Aug	001
Phosphorus, total [as P]	rolling average	≤ 260 lb/d	May–Aug	001
Chloride [as Cl]	monthly average	report only (mg/L)	all year	001
Chloride [as Cl]	monthly average	report only (mg/L)	all year	001
Chloride [as Cl]	daily maximum	report only (mg/L)	all year	001
Chloride [as Cl]	daily maximum	report only (mg/L)	all year	001
Sulfate, total [as SO4]	monthly average	report only (ng/L)	all year	001
Sulfate, total [as SO4]	monthly average	report only (mg/L)	all year	001
Sulfate, total [as SO4]	daily maximum	report only (ng/L)	all year	001
Sulfate, total [as SO4]	daily maximum	report only (mg/L)	all year	001
Silver, total [as Ag]	monthly average	= 1.2 ug/L	all year	001
Silver, total [as Ag]	monthly average	= 1.2 ug/L	all year	001
Silver, total [as Ag]	daily maximum	report only (ug/L)	all year	001
Silver, total [as Ag]	daily maximum	report only (ug/L)	all year	001
Silver, total [as Ag]	monthly average	= .51 lb/d	all year	001
Silver, total [as Ag]	monthly average	= .51 lb/d	all year	001
Silver, total [as Ag]	daily maximum	report only (lb/d)	all year	001
Silver, total [as Ag]	daily maximum	report only (lb/d)	all year	001
Cyanide [A]	monthly average	report only (ug/L)	all year	001
Cyanide [A]	monthly average	report only (ug/L)	all year	001
Cyanide [A]	daily maximum	report only (ug/L)	all year	001
Cyanide [A]	daily maximum	report only (ug/L)	all year	001
Cyanide [A]	monthly average	report only (lb/d)	all year	001
Cyanide [A]	monthly average	report only (lb/d)	all year	001
Cyanide [A]	daily maximum	report only (lb/d)	all year	001
Cyanide [A]	daily maximum	report only (lb/d)	all year	001
Naphthalene	monthly average	= 11 ug/L	all year	001
Naphthalene	monthly average	= 11 ug/L	all year	001
Naphthalene	daily maximum	report only (ug/L)	all year	001
Naphthalene	daily maximum	report only (ug/L)	all year	001
Naphthalene	monthly average	= 4.7 lb/d	all year	001
Naphthalene	monthly average	= 4.7 lb/d	all year	001
Naphthalene	daily maximum	report only (lb/d)	all year	001
Naphthalene	daily maximum	report only (lb/d)	all year	001
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	001
Perfluorooctanesulfonate	monthly average	= 12 ng/L	all year	001
Perfluorooctanesulfonate	monthly average	= 12 ng/L	all year	001
Perfluorooctanesulfonate	daily maximum	report only (ng/L)	all year	001
Perfluorooctanesulfonate	daily maximum	report only (ng/L)	all year	001
Perfluorooctanesulfonate	monthly average	= .005 lb/d	all year	001
Perfluorooctanesulfonate	monthly average	= .005 lb/d	all year	001
Perfluorooctanesulfonate	daily maximum	report only (lb/d)	all year	001
Perfluorooctanesulfonate	daily maximum	report only (lb/d)	all year	001
Mercury, total [as Hg]	monthly average	report only (ng/L)	all year	001
Mercury, total [as Hg]	monthly average	report only (ng/L)	all year	001
Mercury, total [as Hg]	daily maximum	report only (ng/L)	all year	001
Mercury, total [as Hg]	daily maximum	report only (ng/L)	all year	001
Mercury, total [as Hg]	monthly average	report only (lb/d)	all year	001
Mercury, total [as Hg]	monthly average	report only (lb/d)	all year	001
Mercury, total [as Hg]	daily maximum	report only (lb/d)	all year	001
Mercury, total [as Hg]	daily maximum	report only (lb/d)	all year	001
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	001
Coliform, fecal general	monthly geometric mean	= 200 #/100mL	all year	001
Coliform, fecal general	7-day geometric mean	≤ 400 #/100mL	all year	001
Coliform, fecal general	7-day geometric mean	= 400 #/100mL	all year	001
BOD, carbonaceous [5 day, 20 C]	monthly average	= 4 mg/L	Apr–Oct	001
BOD, carbonaceous [5 day, 20 C]	monthly average	= 7 mg/L	Nov	001
BOD, carbonaceous [5 day, 20 C]	monthly average	= 10 mg/L	Jan, Feb, Mar, Dec	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 10 mg/L	Apr–Oct	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 11 mg/L	Nov	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 15 mg/L	Jan, Feb, Mar, Dec	001
BOD, carbonaceous [5 day, 20 C]	monthly average	= 1700 lb/d	Apr–Oct	001
BOD, carbonaceous [5 day, 20 C]	monthly average	= 3000 lb/d	Nov	001
BOD, carbonaceous [5 day, 20 C]	monthly average	= 4300 lb/d	Jan, Feb, Mar, Dec	001
BOD, carbonaceous [5 day, 20 C]	7-day average	= 4300 lb/d	Apr–Oct	001
BOD, carbonaceous [5 day, 20 C]	7-day average	= 4700 lb/d	Nov	001
BOD, carbonaceous [5 day, 20 C]	7-day average	= 6400 lb/d	Jan, Feb, Mar, Dec	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 7 mg/L	Nov	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 10 mg/L	Jan, Feb, Mar, Dec	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 4 mg/L	Apr–Oct	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 11 mg/L	Nov	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 15 mg/L	Jan, Feb, Mar, Dec	001
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 10 mg/L	Apr–Oct	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 3000 lb/d	Nov	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 4300 lb/d	Jan, Feb, Mar, Dec	001
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 1700 lb/d	Apr–Oct	001
BOD, carbonaceous [5 day, 20 C]	7-day average	≤ 4700 lb/d	Nov	001
BOD, carbonaceous [5 day, 20 C]	7-day average	≤ 6400 lb/d	Jan, Feb, Mar, Dec	001
BOD, carbonaceous [5 day, 20 C]	7-day average	≤ 4300 lb/d	Apr–Oct	001
Oxygen, dissolved [DO]	daily minimum	≥ 7 mg/L	Apr	003
Oxygen, dissolved [DO]	daily minimum	≥ 6 mg/L	Jan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec	003
pH	daily minimum	≥ 6.5 SU	all year	003
pH	daily maximum	≤ 9 SU	all year	003
Solids, total suspended	monthly average	≤ 20 mg/L	all year	003
Solids, total suspended	7-day average	≤ 30 mg/L	all year	003
Solids, total suspended	monthly average	≤ 8500 lb/d	all year	003
Solids, total suspended	7-day average	≤ 13000 lb/d	all year	003
Nitrogen, ammonia total [as N]	monthly average	≤ .5 mg/L	May–Oct	003
Nitrogen, ammonia total [as N]	monthly average	≤ 9 mg/L	Nov	003
Nitrogen, ammonia total [as N]	monthly average	≤ 12 mg/L	Jan, Feb, Mar, Dec	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 2 mg/L	May–Oct	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 9.9 mg/L	Nov	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 17 mg/L	Jan, Feb, Mar, Dec	003
Nitrogen, ammonia total [as N]	daily maximum	≤ 5.6 mg/L	Apr	003
Nitrogen, ammonia total [as N]	monthly average	≤ 210 lb/d	May–Oct	003
Nitrogen, ammonia total [as N]	monthly average	≤ 3800 lb/d	Nov	003
Nitrogen, ammonia total [as N]	monthly average	≤ 5100 lb/d	Jan, Feb, Mar, Dec	003
Nitrogen, ammonia total [as N]	7-day average	≤ 850 lb/d	May–Oct	003
Nitrogen, ammonia total [as N]	7-day average	≤ 4200 lb/d	Nov	003
Nitrogen, ammonia total [as N]	7-day average	≤ 7300 lb/d	Jan, Feb, Mar, Dec	003
Nitrogen, ammonia total [as N]	7-day average	≤ 2400 lb/d	Apr	003
Phosphorus, total [as P]	monthly average	≤ .8 mg/L	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	003
Phosphorus, total [as P]	monthly average	≤ .7 mg/L	May–Aug	003
Phosphorus, total [as P]	daily maximum	report only (mg/L)	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	003
Phosphorus, total [as P]	daily maximum	report only (mg/L)	May–Aug	003
Phosphorus, total [as P]	monthly average	≤ 340 lb/d	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	003
Phosphorus, total [as P]	monthly average	≤ 300 lb/d	May–Aug	003
Phosphorus, total [as P]	daily maximum	report only (lb/d)	Jan, Feb, Mar, Apr, Sep, Oct, Nov, Dec	003
Phosphorus, total [as P]	daily maximum	report only (lb/d)	May–Aug	003
Phosphorus, total [as P]	rolling average	≤ .6 mg/L	May–Aug	003
Phosphorus, total [as P]	rolling average	≤ 260 lb/d	May–Aug	003
Chloride [as Cl]	monthly average	report only (mg/L)	all year	003
Chloride [as Cl]	daily maximum	report only (mg/L)	all year	003
Sulfate, total [as SO4]	monthly average	report only (mg/L)	all year	003
Sulfate, total [as SO4]	daily maximum	report only (mg/L)	all year	003
Silver, total [as Ag]	monthly average	= 1.2 ug/L	all year	003
Silver, total [as Ag]	daily maximum	report only (ug/L)	all year	003
Silver, total [as Ag]	monthly average	= .51 lb/d	all year	003
Silver, total [as Ag]	daily maximum	report only (lb/d)	all year	003
Cyanide [A]	monthly average	report only (ug/L)	all year	003
Cyanide [A]	daily maximum	report only (ug/L)	all year	003
Cyanide [A]	monthly average	report only (lb/d)	all year	003
Cyanide [A]	daily maximum	report only (lb/d)	all year	003
Naphthalene	monthly average	= 11 ug/L	all year	003
Naphthalene	daily maximum	report only (ug/L)	all year	003
Naphthalene	monthly average	= 4.7 lb/d	all year	003
Naphthalene	daily maximum	report only (lb/d)	all year	003
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	003
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	003
Perfluorooctanesulfonate	monthly average	= 12 ng/L	all year	003
Perfluorooctanesulfonate	daily maximum	report only (ng/L)	all year	003
Perfluorooctanesulfonate	monthly average	= .005 lb/d	all year	003
Perfluorooctanesulfonate	daily maximum	report only (lb/d)	all year	003
Mercury, total [as Hg]	monthly average	report only (ng/L)	all year	003
Mercury, total [as Hg]	daily maximum	report only (ng/L)	all year	003
Mercury, total [as Hg]	monthly average	report only (lb/d)	all year	003
Mercury, total [as Hg]	daily maximum	report only (lb/d)	all year	003
Coliform, fecal general	monthly geometric mean	≤ 200 #/100mL	all year	003
Coliform, fecal general	7-day geometric mean	≤ 400 #/100mL	all year	003
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 4 mg/L	Apr–Oct	003
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 7 mg/L	Nov	003
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 10 mg/L	Jan, Feb, Mar, Dec	003
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 10 mg/L	Apr–Oct	003
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 11 mg/L	Nov	003
BOD, carbonaceous [5 day, 20 C]	daily maximum	≤ 15 mg/L	Jan, Feb, Mar, Dec	003
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 1700 lb/d	Apr–Oct	003
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 3000 lb/d	Nov	003
BOD, carbonaceous [5 day, 20 C]	monthly average	≤ 4300 lb/d	Jan, Feb, Mar, Dec	003
BOD, carbonaceous [5 day, 20 C]	7-day average	≤ 4300 lb/d	Apr–Oct	003
BOD, carbonaceous [5 day, 20 C]	7-day average	≤ 4700 lb/d	Nov	003
BOD, carbonaceous [5 day, 20 C]	7-day average	≤ 6400 lb/d	Jan, Feb, Mar, Dec	003
Solids, total	monthly minimum	report only (%)	all year	SLD
Solids, total	monthly average	report only (%)	all year	SLD
Solids, total	monthly maximum	report only (%)	all year	SLD
Arsenic, dry weight	monthly minimum	report only (mg/kg)	all year	SLD
Arsenic, dry weight	monthly average	report only (mg/kg)	all year	SLD
Arsenic, dry weight	monthly maximum	≤ 75 mg/kg	all year	SLD
Selenium, dry weight	monthly minimum	report only (mg/kg)	all year	SLD
Selenium, dry weight	monthly average	report only (mg/kg)	all year	SLD
Selenium, dry weight	monthly maximum	≤ 100 mg/kg	all year	SLD
Copper, dry weight	monthly minimum	report only (mg/kg)	all year	SLD
Copper, dry weight	monthly average	report only (mg/kg)	all year	SLD
Copper, dry weight	monthly maximum	≤ 4300 mg/kg	all year	SLD
Cadmium, dry weight	monthly minimum	report only (mg/kg)	all year	SLD
Cadmium, dry weight	monthly average	report only (mg/kg)	all year	SLD
Cadmium, dry weight	monthly maximum	≤ 85 mg/kg	all year	SLD
Nitrogen, total Kjeldahl	monthly minimum	report only (mg/kg)	all year	SLD
Nitrogen, total Kjeldahl	monthly average	report only (mg/kg)	all year	SLD
Nitrogen, total Kjeldahl	monthly maximum	report only (mg/kg)	all year	SLD
Molybdenum, sludge, total, dry weight [as Mo]	monthly minimum	report only (mg/kg)	all year	SLD
Molybdenum, sludge, total, dry weight [as Mo]	monthly average	report only (mg/kg)	all year	SLD
Molybdenum, sludge, total, dry weight [as Mo]	monthly maximum	≤ 75 mg/kg	all year	SLD
Zinc, sludge, total, dry weight [as Zn]	monthly minimum	report only (mg/kg)	all year	SLD
Zinc, sludge, total, dry weight [as Zn]	monthly average	report only (mg/kg)	all year	SLD
Zinc, sludge, total, dry weight [as Zn]	monthly maximum	≤ 7500 mg/kg	all year	SLD
Lead, sludge, total, dry weight [as Pb]	monthly minimum	report only (mg/kg)	all year	SLD
Lead, sludge, total, dry weight [as Pb]	monthly average	report only (mg/kg)	all year	SLD
Lead, sludge, total, dry weight [as Pb]	monthly maximum	≤ 840 mg/kg	all year	SLD
Nickel, sludge, total, dry weight [as Ni]	monthly minimum	report only (mg/kg)	all year	SLD
Nickel, sludge, total, dry weight [as Ni]	monthly average	report only (mg/kg)	all year	SLD
Nickel, sludge, total, dry weight [as Ni]	monthly maximum	≤ 420 mg/kg	all year	SLD
Nitrogen, sludge, total, dry weight [as N]	monthly minimum	report only (mg/kg)	all year	SLD
Nitrogen, sludge, total, dry weight [as N]	monthly average	report only (mg/kg)	all year	SLD
Nitrogen, sludge, total, dry weight [as N]	monthly maximum	report only (mg/kg)	all year	SLD
Mercury, sludge, total, dry weight [as Hg]	monthly minimum	report only (mg/kg)	all year	SLD
Mercury, sludge, total, dry weight [as Hg]	monthly average	report only (mg/kg)	all year	SLD
Mercury, sludge, total, dry weight [as Hg]	monthly maximum	≤ 57 mg/kg	all year	SLD
Potassium, sludge, total, dry weight [as K]	monthly minimum	report only (mg/kg)	all year	SLD
Potassium, sludge, total, dry weight [as K]	monthly average	report only (mg/kg)	all year	SLD
Potassium, sludge, total, dry weight [as K]	monthly maximum	report only (mg/kg)	all year	SLD
Phosphorus, sludge, total, dry weight [as P]	monthly minimum	report only (mg/kg)	all year	SLD
Phosphorus, sludge, total, dry weight [as P]	monthly average	report only (mg/kg)	all year	SLD
Phosphorus, sludge, total, dry weight [as P]	monthly maximum	report only (mg/kg)	all year	SLD

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/MI0042676 · MCP: https://passage-data.com/mcp