{"query":{"parameter":"tss","place":"US-MN","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-MN","US"],"parameter_keys":["name:matieres en suspension","name:solidi sospesi totali","name:total suspended solids","name:tss","name:1. tss","name:solids - total suspended","name:tss and"],"names_matched":[["tss","name:matieres en suspension"],["tss","name:solidi sospesi totali"],["tss","name:total suspended solids"],["tss","name:tss"],["1 tss","name:1. tss"],["solids total suspended tss","name:solids - total suspended"],["tss and","name:tss and"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":3851,"offset":0,"returned":50,"next_offset":50,"rows":[{"id":"d1e61704868ceabe","parameter":"Total suspended solids (TSS)","value":"10","value_num":10,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2A waters: coldwater aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 2; each water's class is listed in 7050.0470)"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 2","page":115,"quote":"Total suspended solids (TSS)​ mg/L​ 10​ NA​ --​ --​ NA​"}},{"id":"9a41ec7ca2e8d35d","parameter":"Total suspended solids (TSS)","value":"15 mg/L","value_num":15,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2Bd waters: cool or warm water aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 3)","North River Nutrient Region"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 3","page":130,"quote":"North River Nutrient Region​ mg/L​ 15​ NA​ -​ -​ NA​"}},{"id":"bc0b23775847d667","parameter":"Total suspended solids (TSS)","value":"30 mg/L","value_num":30,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2Bd waters: cool or warm water aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 3)","Central River Nutrient Region"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 3","page":130,"quote":"Central River Nutrient Region​ mg/L​ 30​ NA​ -​ -​ NA​"}},{"id":"16ceb81fa69ad551","parameter":"Total suspended solids (TSS)","value":"65 mg/L","value_num":65,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2Bd waters: cool or warm water aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 3)","South River Nutrient Region"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 3","page":130,"quote":"South River Nutrient Region​ mg/L​ 65​ NA​ -​ -​ NA​"}},{"id":"d70d0de55cc4775c","parameter":"Total suspended solids (TSS)","value":"100 mg/L","value_num":100,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2Bd waters: cool or warm water aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 3)","Red River mainstem - headwaters to border"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 3","page":130,"quote":"headwaters to border​ mg/L​ 100​ NA​ -​ -​ NA​"}},{"id":"be86c398e7c238e5","parameter":"Total suspended solids (TSS)","value":"32 mg/L","value_num":32,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2Bd waters: cool or warm water aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 3)","Lower Mississippi River mainstem - Pools 2 through 4"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 3","page":131,"quote":"mainstem - Pools 2 through 4​ mg/L​ 32​ NA​ -​ -​ NA​"}},{"id":"b0e1bc39d2a97ed1","parameter":"Total suspended solids (TSS)","value":"30 mg/L","value_num":30,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2Bd waters: cool or warm water aquatic life and habitats, also protected as a source of drinking water (Minn. R. 7050.0222 subp. 3)","Lower Mississippi River mainstem below Lake Pepin"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 3","page":131,"quote":"mainstem below Lake Pepin​ mg/L​ 30​ NA​ -​ -​ NA​"}},{"id":"5c2b0fb811ea70e2","parameter":"Total suspended solids (TSS)","value":"15 mg/L","value_num":15,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2B waters: cool or warm water aquatic life and habitats, not protected as a source of drinking water (Minn. R. 7050.0222 subp. 4); class 2D wetlands take these standards save dissolved oxygen, pH, temperature and chloride (subp. 6)","North River Nutrient Region"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 4","page":149,"quote":"North River Nutrient Region​ mg/L​ 15​ NA​ --​ --​ NA​"}},{"id":"2c5b69b12addd750","parameter":"Total suspended solids (TSS)","value":"30 mg/L","value_num":30,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2B waters: cool or warm water aquatic life and habitats, not protected as a source of drinking water (Minn. R. 7050.0222 subp. 4); class 2D wetlands take these standards save dissolved oxygen, pH, temperature and chloride (subp. 6)","Central River Nutrient Region"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 4","page":149,"quote":"Central River Nutrient Region​ mg/L​ 30​ NA​ --​ --​ NA​"}},{"id":"47a8c10e7f4b5d3d","parameter":"Total suspended solids (TSS)","value":"65 mg/L","value_num":65,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2B waters: cool or warm water aquatic life and habitats, not protected as a source of drinking water (Minn. R. 7050.0222 subp. 4); class 2D wetlands take these standards save dissolved oxygen, pH, temperature and chloride (subp. 6)","South River Nutrient Region"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 4","page":149,"quote":"South River Nutrient Region​ mg/L​ 65​ NA​ --​ --​ NA​"}},{"id":"c771e15a315e608b","parameter":"Total suspended solids (TSS)","value":"100 mg/L","value_num":100,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2B waters: cool or warm water aquatic life and habitats, not protected as a source of drinking water (Minn. R. 7050.0222 subp. 4); class 2D wetlands take these standards save dissolved oxygen, pH, temperature and chloride (subp. 6)","Red River mainstem - headwaters to border"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 4","page":149,"quote":"headwaters to border​ mg/L​ 100​ NA​ --​ --​ NA​"}},{"id":"722a820fe52dde90","parameter":"Total suspended solids (TSS)","value":"32 mg/L","value_num":32,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2B waters: cool or warm water aquatic life and habitats, not protected as a source of drinking water (Minn. R. 7050.0222 subp. 4); class 2D wetlands take these standards save dissolved oxygen, pH, temperature and chloride (subp. 6)","Lower Mississippi River mainstem - Pools 2 through 4"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 4","page":150,"quote":"mainstem - Pools 2 through 4​ mg/L​ 32​ NA​ --​ --​ NA​"}},{"id":"33085c41ba5c2923","parameter":"Total suspended solids (TSS)","value":"30 mg/L","value_num":30,"unit":"mg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:total suspended solids","place":["US-MN"],"conditions":["receiving_water is freshwater","class 2B waters: cool or warm water aquatic life and habitats, not protected as a source of drinking water (Minn. R. 7050.0222 subp. 4); class 2D wetlands take these standards save dissolved oxygen, pH, temperature and chloride (subp. 6)","Lower Mississippi River mainstem below Lake Pepin"],"cite":{"instrument":"us_mn_wqs","title":"Minnesota Rules ch. 7050 class 2 (2A, 2Bd, 2B/2D), class 4 and class 5 water quality standards, and ch. 7052 Lake Superior basin standards for GLI pollutants","issuer":"State of Minnesota, Pollution Control Agency","edition":"ch. 7050 as US EPA posts it in effect for CWA purposes (effective July 23, 2025; posting cover July 29, 2025), and ch. 7052 (effective June 26, 2018; Revisor publication 2017)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/mnwqs-chapter-7050.pdf","source_sha256":"1d4e781bf7b39a79bf6ea8ce64daaa05bb6c4bd5b04a98219d606ae88dbac150","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"Minn. R. 7050.0222 subp. 4","page":150,"quote":"mainstem below Lake Pepin​ mg/L​ 30​ NA​ --​ --​ NA​"}},{"id":"2cc7125b4226b660","parameter":"SS","value":"30","value_num":30,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","stream":"sanitary","parameter_key":"name:tss","place":["US"],"conditions":["stream is sanitary","route is direct","a publicly owned treatment works (POTW): the part sets the effluent quality attainable by secondary treatment, which NPDES permits for POTWs carry (40 CFR 133.100, 133.102)"],"cite":{"instrument":"us_40cfr133","title":"40 CFR Part 133 — Secondary Treatment Regulation","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=133","source_sha256":"9f178f66686e289aea4d4961eee13479c15774e48d25aea14710655d2aeb18f7","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 133.102 (secondary treatment)","page":null,"quote":"(b) SS. (1) The 30-day average shall not exceed 30 mg/l."}},{"id":"e529eb01336b4396","parameter":"SS","value":"45","value_num":45,"unit":"mg/L","statistic":"weekly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","stream":"sanitary","parameter_key":"name:tss","place":["US"],"conditions":["stream is sanitary","route is direct","a publicly owned treatment works (POTW): the part sets the effluent quality attainable by secondary treatment, which NPDES permits for POTWs carry (40 CFR 133.100, 133.102)"],"cite":{"instrument":"us_40cfr133","title":"40 CFR Part 133 — Secondary Treatment Regulation","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=133","source_sha256":"9f178f66686e289aea4d4961eee13479c15774e48d25aea14710655d2aeb18f7","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 133.102 (secondary treatment)","page":null,"quote":"(2) The 7-day average shall not exceed 45 mg/l. (3) The 30-day average percent removal shall not be less than 85 percent. (c) pH."}},{"id":"ff2f39c5075a0a40","parameter":"SS","value":"45","value_num":45,"unit":"mg/L","statistic":"monthly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","stream":"sanitary","parameter_key":"name:tss","place":["US"],"conditions":["stream is sanitary","route is direct","a publicly owned treatment works (POTW): the part sets the effluent quality attainable by secondary treatment, which NPDES permits for POTWs carry (40 CFR 133.100, 133.102)","a facility eligible for treatment equivalent to secondary (§ 133.101(g)): a trickling filter or waste stabilization pond as principal process, providing significant biological treatment"],"cite":{"instrument":"us_40cfr133","title":"40 CFR Part 133 — Secondary Treatment Regulation","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=133","source_sha256":"9f178f66686e289aea4d4961eee13479c15774e48d25aea14710655d2aeb18f7","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 133.105 (treatment equivalent to secondary)","page":null,"quote":"§ 133.103(c): (1) The 30-day average shall not exceed 45 mg/l."}},{"id":"24ac4421e2767a99","parameter":"SS","value":"65","value_num":65,"unit":"mg/L","statistic":"weekly_avg","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","stream":"sanitary","parameter_key":"name:tss","place":["US"],"conditions":["stream is sanitary","route is direct","a publicly owned treatment works (POTW): the part sets the effluent quality attainable by secondary treatment, which NPDES permits for POTWs carry (40 CFR 133.100, 133.102)","a facility eligible for treatment equivalent to secondary (§ 133.101(g)): a trickling filter or waste stabilization pond as principal process, providing significant biological treatment"],"cite":{"instrument":"us_40cfr133","title":"40 CFR Part 133 — Secondary Treatment Regulation","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 2026-10-05","source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-10-05/title-40.xml?part=133","source_sha256":"9f178f66686e289aea4d4961eee13479c15774e48d25aea14710655d2aeb18f7","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"40 CFR 133.105 (treatment equivalent to secondary)","page":null,"quote":"§ 133.103(c): (1) The 30-day average shall not exceed 45 mg/l. (2) The 7-day average shall not exceed 65 mg/l."}},{"id":"7dbda4ac53bb0cf1","parameter":"TSS","value":"0.713","value_num":0.713,"unit":"kilograms per 1,000 kg of BOD5 input","statistic":"daily_max","direction":"max","kind":"limit","medium":"water_discharge","level":"national","route":"direct","parameter_key":"name:tss","place":["US"],"conditions":["route is direct","cites is 40 CFR 405","the discharge is of the Subpart A—Receiving Stations Subcategory","existing sources (BPT)","(a) For receiving stations receiving more than 150,000 lb/day of milk equivalent (15,600 lb/day or more of BOD 5 input)."],"cite":{"instrument":"us_40cfr405","title":"40 CFR Part 405 — PART 405—DAIRY PRODUCTS PROCESSING POINT SOURCE CATEGORY","issuer":"U.S. Environmental Protection Agency","edition":"eCFR as of 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