Tracy, City of — NPDES permit CA0079154: limits, due date and EPA's record

Sewage treatment plant, major discharger, Tracy, California. NPDES permit CA0079154, in force until Jan 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Limits in force (170)

Parameter	Statistic	Limit	Months	Outfall
Temperature, water deg. fahrenheit	daily maximum	report only (deg F)	all year	001
Temp. diff. between samp. & upstrm deg. F	maximum	≤ 20 deg F	all year	001
Turbidity	daily average	report only (NTU)	all year	001
Turbidity	daily maximum	report only (NTU)	all year	001
Specific conductance	monthly average	report only (umho/cm)	all year	001
Specific conductance	daily maximum	report only (umho/cm)	all year	001
Oxygen, dissolved [DO]	daily minimum	report only (mg/L)	all year	001
BOD, 5-day, 20 deg. C	monthly average	≤ 10 mg/L	all year	001
BOD, 5-day, 20 deg. C	weekly average	≤ 15 mg/L	all year	001
pH	instantaneous minimum	≥ 6.5 SU	all year	001
pH	instantaneous maximum	≤ 8.5 SU	all year	001
Solids, total suspended	monthly average	≤ 10 mg/L	all year	001
Solids, total suspended	weekly average	≤ 15 mg/L	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 1.5 mg/L	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 1.5 mg/L	all year	001
Nitrogen, ammonia total [as N]	weekly average	≤ 2.9 mg/L	all year	001
Nitrogen, ammonia total [as N]	weekly average	≤ 2.9 mg/L	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 140 lb/d	all year	001
Nitrogen, ammonia total [as N]	monthly average	≤ 160 lb/d	all year	001
Nitrogen, ammonia total [as N]	weekly average	≤ 260 lb/d	all year	001
Nitrogen, ammonia total [as N]	weekly average	≤ 310 lb/d	all year	001
Nitrite + Nitrate total [as N]	monthly average	≤ 10 mg/L	all year	001
Nitrite + Nitrate total [as N]	weekly average	≤ 15 mg/L	all year	001
Carbon, dissolved organic [as C]	daily maximum	report only (mg/L)	all year	001
Carbon, dissolved organic [as C]	daily maximum	report only (mg/L)	all year	001
Hardness, total [as CaCO3]	daily maximum	report only (mg/L)	all year	001
Dichlorobromomethane	monthly average	≤ 11 ug/L	all year	001
Dichlorobromomethane	daily maximum	≤ 23 ug/L	all year	001
Dibromochloromethane	monthly average	≤ 8 ug/L	all year	001
Dibromochloromethane	daily maximum	≤ 17 ug/L	all year	001
Diazinon	daily maximum	report only (ug/L)	all year	001
Diazinon	daily maximum	report only (ug/L)	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
Chlorine, total residual	4-day average	≤ .011 mg/L	all year	001
Chlorine, total residual	1-hour average	≤ .019 mg/L	all year	001
Diazinon + Chlorpyrifos	monthly average	≤ 1 ug/L	all year	001
Diazinon + Chlorpyrifos	monthly average	≤ 1 ug/L	all year	001
Diazinon + Chlorpyrifos	weekly average	≤ 1 ug/L	all year	001
Diazinon + Chlorpyrifos	weekly average	≤ 1 ug/L	all year	001
Solids, total dissolved	daily maximum	report only (mg/L)	all year	001
Solids, total dissolved	annual total	≤ 13688 ton/yr	all year	001
Solids, total dissolved	annual total	≤ 13688 ton/yr	all year	001
Mercury, total recoverable	daily maximum	report only (ng/L)	all year	001
Mercury, total recoverable	annual total	≤ 41 g/yr	all year	001
Mercury, total recoverable	annual total	≤ 41 g/yr	all year	001
Coliform, total general	30-day maximum	≤ 23 MPN/100mL	all year	001
Coliform, total general	7-day median	≤ 2.2 MPN/100mL	all year	001
Coliform, total general	instantaneous maximum	≤ 240 MPN/100mL	all year	001
Methylmercury	daily maximum	report only (ng/L)	all year	001
Methylmercury	annual total	report only (g/yr)	all year	001
Methylmercury	annual total	report only (g/yr)	all year	001
BOD, 5-day, percent removal	monthly average minimum	≥ 85 %	all year	001
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	001
Chlorpyrifos	daily maximum	report only (ug/L)	all year	001
Chlorpyrifos	daily maximum	report only (ug/L)	all year	001
Sulfur dioxide, total	daily maximum	report only (mg/L)	all year	001
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	average	report only (% effect)	all year	001
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	average	report only (% effect)	all year	001
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	maximum	report only (% effect)	all year	001
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	maximum	report only (% effect)	all year	001
%Surv Static Renewal 96Hr Oncorhynchus mykiss	minimum	≥ 70 % survival	all year	001
%Surv Static Renewal 96Hr Oncorhynchus mykiss	minimum	≥ 70 % survival	all year	001
%Surv Static Renewal 96Hr Oncorhynchus mykiss	minimum median	≥ 90 % survival	all year	001
%Surv Static Renewal 96Hr Oncorhynchus mykiss	minimum median	≥ 90 % survival	all year	001
% Survival Flow Through 96Hr Acute Oncorhynchus mykiss	minimum	≥ 70 % survival	all year	001
% Survival Flow Through 96Hr Acute Oncorhynchus mykiss	minimum	≥ 70 % survival	all year	001
% Survival Flow Through 96Hr Acute Oncorhynchus mykiss	minimum median	≥ 90 % survival	all year	001
% Survival Flow Through 96Hr Acute Oncorhynchus mykiss	minimum median	≥ 90 % survival	all year	001
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia	average	report only (tox chronic)	all year	001
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia	average	report only (tox chronic)	all year	001
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia	maximum	report only (tox chronic)	all year	001
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia	maximum	report only (tox chronic)	all year	001
Temperature, water deg. fahrenheit	daily maximum	report only (deg F)	all year	002
Temp. diff. between samp. & upstrm deg. F	maximum	≤ 20 deg F	all year	002
Turbidity	daily average	report only (NTU)	all year	002
Turbidity	daily maximum	report only (NTU)	all year	002
Specific conductance	monthly average	report only (umho/cm)	all year	002
Specific conductance	daily maximum	report only (umho/cm)	all year	002
Oxygen, dissolved [DO]	daily minimum	report only (mg/L)	all year	002
BOD, 5-day, 20 deg. C	monthly average	≤ 10 mg/L	all year	002
BOD, 5-day, 20 deg. C	weekly average	≤ 15 mg/L	all year	002
pH	instantaneous minimum	≥ 6.5 SU	all year	002
pH	instantaneous maximum	≤ 8.5 SU	all year	002
Solids, total suspended	monthly average	≤ 10 mg/L	all year	002
Solids, total suspended	weekly average	≤ 15 mg/L	all year	002
Nitrogen, ammonia total [as N]	monthly average	≤ 1.5 mg/L	all year	002
Nitrogen, ammonia total [as N]	monthly average	≤ 1.5 mg/L	all year	002
Nitrogen, ammonia total [as N]	weekly average	≤ 2.9 mg/L	all year	002
Nitrogen, ammonia total [as N]	weekly average	≤ 2.9 mg/L	all year	002
Nitrogen, ammonia total [as N]	monthly average	≤ 140 lb/d	all year	002
Nitrogen, ammonia total [as N]	monthly average	≤ 160 lb/d	all year	002
Nitrogen, ammonia total [as N]	weekly average	≤ 260 lb/d	all year	002
Nitrogen, ammonia total [as N]	weekly average	≤ 310 lb/d	all year	002
Nitrite + Nitrate total [as N]	monthly average	≤ 10 mg/L	all year	002
Nitrite + Nitrate total [as N]	weekly average	≤ 15 mg/L	all year	002
Carbon, dissolved organic [as C]	daily maximum	report only (mg/L)	all year	002
Carbon, dissolved organic [as C]	daily maximum	report only (mg/L)	all year	002
Hardness, total [as CaCO3]	daily maximum	report only (mg/L)	all year	002
Dichlorobromomethane	monthly average	≤ 11 ug/L	all year	002
Dichlorobromomethane	daily maximum	≤ 23 ug/L	all year	002
Dibromochloromethane	monthly average	≤ 8 ug/L	all year	002
Dibromochloromethane	daily maximum	≤ 17 ug/L	all year	002
Diazinon	daily maximum	report only (ug/L)	all year	002
Diazinon	daily maximum	report only (ug/L)	all year	002
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	002
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	002
Chlorine, total residual	4-day average	≤ .011 mg/L	all year	002
Chlorine, total residual	1-hour average	≤ .019 mg/L	all year	002
Diazinon + Chlorpyrifos	monthly average	≤ 1 ug/L	all year	002
Diazinon + Chlorpyrifos	monthly average	≤ 1 ug/L	all year	002
Diazinon + Chlorpyrifos	weekly average	≤ 1 ug/L	all year	002
Diazinon + Chlorpyrifos	weekly average	≤ 1 ug/L	all year	002
Solids, total dissolved	daily maximum	report only (mg/L)	all year	002
Solids, total dissolved	annual total	≤ 13688 ton/yr	all year	002
Solids, total dissolved	annual total	≤ 13688 ton/yr	all year	002
Mercury, total recoverable	daily maximum	report only (ng/L)	all year	002
Mercury, total recoverable	annual total	≤ 41 g/yr	all year	002
Mercury, total recoverable	annual total	≤ 41 g/yr	all year	002
Coliform, total general	30-day maximum	≤ 23 MPN/100mL	all year	002
Coliform, total general	7-day median	≤ 2.2 MPN/100mL	all year	002
Coliform, total general	instantaneous maximum	≤ 240 MPN/100mL	all year	002
Methylmercury	daily maximum	report only (ng/L)	all year	002
Methylmercury	annual total	report only (g/yr)	all year	002
Methylmercury	annual total	report only (g/yr)	all year	002
BOD, 5-day, percent removal	monthly average minimum	≥ 85 %	all year	002
Solids, suspended percent removal	monthly average minimum	≥ 85 %	all year	002
Chlorpyrifos	daily maximum	report only (ug/L)	all year	002
Chlorpyrifos	daily maximum	report only (ug/L)	all year	002
Sulfur dioxide, total	daily maximum	report only (mg/L)	all year	002
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	average	report only (% effect)	all year	002
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	average	report only (% effect)	all year	002
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	maximum	report only (% effect)	all year	002
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia	maximum	report only (% effect)	all year	002
%Surv Static Renewal 96Hr Oncorhynchus mykiss	minimum	≥ 70 % survival	all year	002
%Surv Static Renewal 96Hr Oncorhynchus mykiss	minimum	≥ 70 % survival	all year	002
%Surv Static Renewal 96Hr Oncorhynchus mykiss	minimum median	≥ 90 % survival	all year	002
%Surv Static Renewal 96Hr Oncorhynchus mykiss	minimum median	≥ 90 % survival	all year	002
% Survival Flow Through 96Hr Acute Oncorhynchus mykiss	minimum	≥ 70 % survival	all year	002
% Survival Flow Through 96Hr Acute Oncorhynchus mykiss	minimum	≥ 70 % survival	all year	002
% Survival Flow Through 96Hr Acute Oncorhynchus mykiss	minimum median	≥ 90 % survival	all year	002
% Survival Flow Through 96Hr Acute Oncorhynchus mykiss	minimum median	≥ 90 % survival	all year	002
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia	average	report only (tox chronic)	all year	002
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia	average	report only (tox chronic)	all year	002
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia	maximum	report only (tox chronic)	all year	002
TU Static Renewal 7-Day Chronic Ceriodaphnia dubia	maximum	report only (tox chronic)	all year	002
Specific conductance	monthly average	report only (umho/cm)	all year	INF1
Specific conductance	daily maximum	report only (umho/cm)	all year	INF1
BOD, 5-day, 20 deg. C	monthly average	report only (mg/L)	all year	INF1
BOD, 5-day, 20 deg. C	daily maximum	report only (mg/L)	all year	INF1
pH	instantaneous minimum	report only (SU)	all year	INF1
pH	instantaneous maximum	report only (SU)	all year	INF1
Solids, total suspended	monthly average	report only (mg/L)	all year	INF1
Solids, total suspended	daily maximum	report only (mg/L)	all year	INF1
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	INF1
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	INF1
Solids, total dissolved	monthly average	report only (mg/L)	all year	INF1
Solids, total dissolved	daily maximum	report only (mg/L)	all year	INF1
Specific conductance	monthly average	report only (umho/cm)	all year	INF2
Specific conductance	daily maximum	report only (umho/cm)	all year	INF2
BOD, 5-day, 20 deg. C	monthly average	report only (mg/L)	all year	INF2
BOD, 5-day, 20 deg. C	daily maximum	report only (mg/L)	all year	INF2
pH	instantaneous minimum	report only (SU)	all year	INF2
pH	instantaneous maximum	report only (SU)	all year	INF2
Solids, total suspended	monthly average	report only (mg/L)	all year	INF2
Solids, total suspended	daily maximum	report only (mg/L)	all year	INF2
Flow, in conduit or thru treatment plant	monthly average	report only (MGD)	all year	INF2
Flow, in conduit or thru treatment plant	daily maximum	report only (MGD)	all year	INF2
Solids, total dissolved	monthly average	report only (mg/L)	all year	INF2
Solids, total dissolved	daily maximum	report only (mg/L)	all year	INF2

How strict are these limits?

Your permit document is the final word. As JSON: /api/v1/permits/CA0079154 · MCP: https://passage-data.com/mcp