Regulations last checked for updates: May 03, 2025
Title 40 - Protection of Environment last revised: Nov 03, 2025
§ 461.30 - Applicability; description of the lead subcategory.
This subpart applies to discharges to waters of the United States and introduction of pollutants into publicly owned treatment works from the manufacturing of lead anode batteries.
§ 461.31 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available (BPT).
(a) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best practicable control technology currently available:
(1) Subpart C—Closed Formation—Double Fill, or Fill and Dump.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.86 | 0.45
|
Lead | 0.19 | 0.090
|
Iron | 0.54 | 0.27
|
Oil and grease | 9.00 | 5.40
|
TSS | 18.45 | 8.78
|
pH | (
1) | (
1)
|
(2) Subpart C—Open Formation—Dehydrated.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 20.99 | 11.05
|
Lead | 4.64 | 2.21
|
Iron | 16.13 | 6.74
|
Oil and grease | 221.00 | 132.60
|
TSS | 453.05 | 215.47
|
pH | (
1) | (
1)
|
(3) Subpart C—Open Formation—Wet.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.10 | 0.05
|
Lead | 0.02 | 0.01
|
Iron | 0.06 | 0.03
|
Oil and grease | 1.06 | 0.64
|
TSS | 2.17 | 1.03
|
pH | (
1) | (
1)
|
(4) Subpart C—Plate Soak.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.040 | 0.020
|
Lead | 0.009 | 0.004
|
Iron | 0.030 | 0.010
|
Oil and grease | 0.420 | 0.250
|
TSS | 0.860 | 0.410
|
pH | (
1) | (
1)
|
(5) Subpart C—Battery Wash (with Detergent).
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 1.71 | 0.90
|
Lead | 0.38 | 0.18
|
Iron | 1.08 | 0.55
|
Oil and grease | 18.00 | 10.80
|
TSS | 36.90 | 17.55
|
pH | (
1) | (
1)
|
(6) Subpart C—Battery Wash (Water Only).
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 1.12 | 0.59
|
Lead | 0.25 | 0.12
|
Iron | 0.71 | 0.36
|
Oil and grease | 11.80 | 7.08
|
TSS | 24.19 | 11.51
|
pH | (
1) | (
1)
|
(7) Subpart C—Direct Chill Lead Casting.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.00040 | 0.00020
|
Lead | 0.00008 | 0.00004
|
Iron | 0.00020 | 0.00010
|
Oil and grease | 0.00400 | 0.00200
|
TSS | 0.00800 | 0.00300
|
pH | (
1) | (
1)
|
(8) Subpart C—Mold Release Formulation.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.011 | 0.006
|
Lead | 0.002 | 0.001
|
Iron | 0.007 | 0.004
|
Oil and grease | 0.120 | 0.072
|
TSS | 0.246 | 0.117
|
pH | (
1) | (
1)
|
(9) Subpart C—Truck Wash.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead in trucked batteries
|
| English units—pounds per 1,000,000 pounds of lead in trucked batteries
|
Copper | 0.026 | 0.014
|
Lead | 0.005 | 0.002
|
Iron | 0.016 | 0.008
|
Oil and grease | 0.280 | 0.168
|
TSS | 0.574 | 0.273
|
pH | (
1) | (
1)
|
(10) Subpart C—Laundry.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.21 | 0.11
|
Lead | 0.05 | 0.02
|
Iron | 0.13 | 0.07
|
Oil and grease | 2.18 | 1.31
|
TSS | 4.47 | 2.13
|
pH | (
1) | (
1)
|
(11) Subpart C—Miscellaneous Wastewater Streams.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.81 | 0.43
|
Lead | 0.18 | 0.09
|
Iron | 0.51 | 0.26
|
Oil and grease | 8.54 | 5.12
|
TSS | 17.51 | 8.33
|
pH | (
1) | (
1)
|
(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.
[49 FR 9134, Mar. 9, 1984; 49 FR 13879, Apr. 9, 1984]
§ 461.32 - Effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable (BAT).
(a) Except as provided in 40 CFR 125.30 through 125.32, any existing point source subject to this subpart must achieve the following effluent limitations representing the degree of effluent reduction attainable by the application of the best available technology economically achievable:
(1) Subpart C—Open Formation—Dehydrated.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 3.19 | 1.68
|
Lead | 0.71 | 0.34
|
Iron | 2.02 | 1.02 |
(2) Subpart C—Open Formation—Wet.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.100 | 0.053
|
Lead | 0.022 | 0.010
|
Iron | 0.06 | 0.03 |
(3) Subpart C—Plate Soak.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.039 | 0.021
|
Lead | 0.008 | 0.004
|
Iron | 0.030 | 0.010 |
(4) Subpart C—Battery Wash (Detergent).
Pollutant or Pollutant Property
| Maximum for any 1 Day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 1.71 | 0.90
|
Lead | 0.38 | 0.18
|
Iron | 1.08 | 0.55 |
(5) Subpart C—Direct Chill Lead Casting.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.0004 | 0.0002
|
Lead | 0.00008 | 0.00004
|
Iron | 0.0002 | 0.0001 |
(6) Subpart C—Mold Release Formulation.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.011 | 0.006
|
Lead | 0.002 | 0.001
|
Iron | 0.007 | 0.003 |
(7) Subpart C—Truck Wash.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead in trucked batteries
|
| English units—pounds per 1,000,000 pounds of lead in trucked batteries
|
Copper | 0.026 | 0.014
|
Lead | 0.005 | 0.002
|
Iron | 0.016 | 0.008 |
(8) Subpart C—Laundry.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.21 | 0.11
|
Lead | 0.05 | 0.02
|
Iron | 0.13 | 0.07 |
(9) Subpart C—Miscellaneous Wastewater Streams.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.58 | 0.31
|
Lead | 0.13 | 0.06
|
Iron | 0.37 | 0.19 |
(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.
[49 FR 9134, Mar. 9, 1984; 49 FR 13879, Apr. 9, 1984, as amended at 51 FR 30816, Aug. 28, 1986]
§ 461.33 - New source performance standards (NSPS).
(a) The discharge of wastewater pollutants from any new source subject to this subpart shall not exceed the standards set forth below:
(1) Subpart C—Open Formation—Dehydrated—NSPS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 2.15 | 1.02
|
Lead | 0.47 | 0.21
|
Iron | 2.01 | 1.02
|
Oil and grease | 16.80 | 16.80
|
TSS | 25.20 | 20.16
|
pH | (
1) | (
1)
|
(2) Subpart C—Open Formation—Wet—NSPS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.067 | 0.032
|
Lead | 0.014 | 0.006
|
Iron | 0.063 | 0.032
|
Oil and grease | 0.53 | 0.53
|
TSS | 0.80 | 0.64
|
pH | (
1) | (
1)
|
(3) Subpart C—Plate Soak—NSPS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.026 | 0.012
|
Lead | 0.005 | 0.002
|
Iron | 0.025 | 0.012
|
Oil and grease | 0.21 | 0.21
|
TSS | 0.32 | 0.25
|
pH | (
1) | (
1)
|
(4) Subpart C—Battery Wash (Detergent)—NSPS.
Pollutant or pollutant Property
| Maximum for any 1 Day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 1.152 | 0.549
|
Lead | 0.252 | 0.117
|
Iron | 1.08 | 0.55
|
Oil and grease | 9.0 | 9.0
|
TSS | 13.5 | 10.8
|
pH | (
1) | (
1)
|
(5) Subpart C—Direct Chill Lead Casting—NSPS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.000256 | 0.000122
|
Lead | 0.000056 | 0.000026
|
Iron | 0.000240 | 0.000122
|
Oil and grease | 0.0020 | 0.0020
|
TSS | 0.0030 | 0.0024
|
pH | (
1) | (
1)
|
(6) Subpart C—Mold Release Formulation—NSPS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.0077 | 0.0037
|
Lead | 0.0017 | 0.0008
|
Iron | 0.0072 | 0.0037
|
Oil and grease | 0.060 | 0.060
|
TSS | 0.090 | 0.072
|
pH | (
1) | (
1)
|
(7) Subpart C—Truck Wash—NSPS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead in trucked batteries
|
| English units—pounds per 1,000,000 pounds of lead in trucked batteries
|
Copper | 0.006 | 0.003
|
Lead | 0.001 | 0.0007
|
Iron | 0.006 | 0.003
|
Oil and grease | 0.050 | 0.050
|
TSS | 0.075 | 0.060
|
pH | (
1) | (
1)
|
(8) Subpart C—Laundry—NSPS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.14 | 0.07
|
Lead | 0.03 | 0.01
|
Iron | 0.13 | 0.07
|
Oil and grease | 1.09 | 1.09
|
TSS | 1.64 | 1.31
|
pH | (
1) | (
1)
|
(9) Subpart C—Miscellaneous Wastewater Streams—NSPS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.39 | 0.19
|
Lead | 0.085 | 0.039
|
Iron | 0.37 | 0.19
|
Oil and grease | 3.07 | 3.07
|
TSS | 4.61 | 3.69
|
pH | (
1) | (
1)
|
(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.
[49 FR 9134, Mar. 9, 1984, as amended at 51 FR 30816, Aug. 28, 1986]
§ 461.34 - Pretreatment standards for existing sources (PSES).
(a) Except as provided in 40 CFR 403.7 and 403.13, any existing source subject to this subpart that introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the pretreatment standards for existing sources listed below:
(1) Subpart C—Open Formation—Dehydrated—PSES.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 3.19 | 1.68
|
Lead | 0.71 | 0.34 |
(2) Subpart C—Open Formation—Wet—PSES.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.100 | 0.053
|
Lead | 0.022 | 0.010 |
(3) Subpart C—Plate Soak—PSES.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.039 | 0.021
|
Lead | 0.008 | 0.004 |
(4) Subpart C—Battery Wash—(Detergent)—PSES.
Pollutant or pollutant Property
| Maximum for any 1 Day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 1.71 | 0.90
|
Lead | 0.38 | 0.18 |
(5) Subpart C—Direct Chill Lead Casting—PSES.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.0004 | 0.0002
|
Lead | 0.00008 | 0.00004 |
(6) Subpart C—Mold Release Formulation—PSES.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.011 | 0.006
|
Lead | 0.002 | 0.001 |
(7) Subpart C—Truck Wash—PSES.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead in trucked batteries
|
| English units—pounds per 1,000,000 pounds of lead in trucked batteries
|
Copper | 0.026 | 0.014
|
Lead | 0.005 | 0.002 |
(8) Subpart C—Laundry—PSES.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.21 | 0.11
|
Lead | 0.05 | 0.02 |
(9) Subpart C—Miscellaneous Wastewater Streams—PSES.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.58 | 0.31
|
Lead | 0.13 | 0.06 |
(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operation other than those battery manufacturing operations listed above.
(c)(1) In cases where battery employee shower wastewater containing concentrations of lead exceeding 0.20 mg/l is combined with process wastewaters prior to treatment, the Control Authority may, for purposes of applying the Combined Wastestream Formula under § 403.6(e) of this chapter, notwithstanding the provisions of § 403.6(e), exercise its discretion and classify battery employee shower wastewater as an unregulated rather than a dilute (FD) wastestream.
(2) Before the Control Authority may exercise its discretion to classify such a stream as an unregulated stream, the battery manufacturer must provide engineering, production, and sampling and analysis information sufficient to allow a determination by the Control Authority on how the stream should be classified.
[49 FR 9134, Mar. 9, 1984, as amended at 51 FR 30816, Aug. 28, 1986]
§ 461.35 - Pretreatment standards for new sources (PSNS).
(a) Except as provided in § 403.7, any new source subject to this subpart that introduces pollutants into a publicly owned treatment works must comply with 40 CFR part 403 and achieve the following pretreatment standards for new sources:
(1) Subpart C—Open Formation—Dehydrated—PSNS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 2.15 | 1.02
|
Lead | 0.47 | 0.21 |
(2) Subpart C—Open Formation—Wet—PSNS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.067 | 0.032
|
Lead | 0.014 | 0.006 |
(3) Subpart C—Plate Soak—PSNS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.026 | 0.012
|
Lead | 0.005 | 0.002 |
(4) Subpart C—Battery Wash—(Detergent)—PSNS.
Pollutant or pollutant Property
| Maximum for any 1 Day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 1.152 | 0.549
|
Lead | 0.252 | 0.117 |
(5) Subpart C—Direct Chill Lead Casting—PSNS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.000256 | 0.000122
|
Lead | 0.000056 | 0.000026 |
(6) Subpart C—Mold Release Formulation—PSNS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.007 | 0.0037
|
Lead | 0.0017 | 0.0008 |
(7) Subpart C—Truck Wash—PSNS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead in trucked batteries
|
| English units—pounds per 1,000,000 pounds of lead in trucked batteries
|
Copper | 0.006 | 0.003
|
Lead | 0.001 | 0.0007 |
(8) Subpart C—Laundry—PSNS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.14 | 0.07
|
Lead | 0.03 | 0.01 |
(9) Subpart C—Miscellaneous Wastewater Streams—PSNS.
Pollutant or pollutant property
| Maximum for any 1 day
| Maximum for monthly average
|
---|
| Metric units—mg/kg of lead used
|
| English units—pounds per 1,000,000 pounds of lead used
|
Copper | 0.39 | 0.19
|
Lead | 0.085 | 0.039 |
(b) There shall be no discharge allowance for process wastewater pollutants from any battery manufacturing operations other than those battery manufacturing operations listed above.
[49 FR 9134, Mar. 9, 1984, as amended at 51 FR 30817, Aug. 28, 1986]
authority: Secs. 301, 304 (b), (c), (e), and (g), 306 (b) and (c), 307 (b) and (c), 308 and 501 of the Clean Water Act (the Federal Water Pollution Control Act Amendments of 1972, as amended by the Clean Water Act of 1977) (the “Act”);
33 U.S.C. 1311,
1314,
c,
e,
and, 1316 (b) and
c, 1317 (b) and
c,
and; 86 Stat. 816, Pub. L. 92-500; 91 Stat. 1567, Pub. L. 95-217
source: 49 FR 9134, Mar. 9, 1984, unless otherwise noted.
cite as: 40 CFR 461.30