{"query":{"parameter":"dissolved oxygen","place":"US-IL","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-IL","US"],"parameter_keys":["cas:7782-44-7","name:dissolved oxygen","name:diel dissolved oxygen flux","name:minimum dissolved oxygen","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","name:oxygen - dissolved","name:oxygen, dissolved"],"names_matched":[["dissolved oxygen","cas:7782-44-7"],["dissolved oxygen","name:dissolved oxygen"],["diel dissolved oxygen flux","name:diel dissolved oxygen flux"],["minimum dissolved oxygen","name:minimum dissolved oxygen"],["chemical oxygen demand arsenic radium dissolved and total uranium zinc","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","oxygen dissolved"],["chemical oxygen demand arsenic radium dissolved and total uranium zinc h","name:chemical oxygen demand, arsenic, radium (dissolved and total, uranium, zinc","oxygen dissolved"],["oxygen dissolved","name:oxygen - dissolved","oxygen dissolved"],["oxygen dissolved","name:oxygen, dissolved","oxygen dissolved"],["oxygen dissolved intergravel","name:oxygen, dissolved","oxygen dissolved"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order"},"total":13,"offset":0,"returned":13,"next_offset":null,"rows":[{"id":"cdcc1e0afce2c336","parameter":"Dissolved oxygen","value":"5 mg/L","value_num":5,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","General Use waters: waters of the State for which there is no specific designation (35 Ill. Adm. Code 302.201)","the main body of streams, water above the thermocline of stratified lakes and reservoirs, and the whole column of unstratified lakes and reservoirs (302.206(b)), except Appendix D waters","March through July"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.206(b)","page":20,"quote":"A) 5.0 mg/L at any time; and"}},{"id":"2e1e1fd673065e42","parameter":"Dissolved oxygen","value":"6 mg/L","value_num":6,"unit":"mg/L","statistic":"weekly_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","General Use waters: waters of the State for which there is no specific designation (35 Ill. Adm. Code 302.201)","the main body of streams, water above the thermocline of stratified lakes and reservoirs, and the whole column of unstratified lakes and reservoirs (302.206(b)), except Appendix D waters","March through July"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.206(b)","page":20,"quote":"B) 6.0 mg/L as a daily mean averaged over 7 days."}},{"id":"7be257ac2509617f","parameter":"Dissolved oxygen","value":"3.5 mg/L","value_num":3.5,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","General Use waters: waters of the State for which there is no specific designation (35 Ill. Adm. Code 302.201)","the main body of streams, water above the thermocline of stratified lakes and reservoirs, and the whole column of unstratified lakes and reservoirs (302.206(b)), except Appendix D waters","August through February"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.206(b)","page":20,"quote":"A) 3.5 mg/L at any time;"}},{"id":"8626f4b6cefa117c","parameter":"Dissolved oxygen","value":"4 mg/L","value_num":4,"unit":"mg/L","statistic":"weekly_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","General Use waters: waters of the State for which there is no specific designation (35 Ill. Adm. Code 302.201)","the main body of streams, water above the thermocline of stratified lakes and reservoirs, and the whole column of unstratified lakes and reservoirs (302.206(b)), except Appendix D waters","August through February"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.206(b)","page":20,"quote":"B) 4.0 mg/L as a daily minimum averaged over 7 days;"}},{"id":"09072f01749dfcfe","parameter":"Dissolved oxygen","value":"5.5 mg/L","value_num":5.5,"unit":"mg/L","statistic":"monthly_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","General Use waters: waters of the State for which there is no specific designation (35 Ill. Adm. Code 302.201)","the main body of streams, water above the thermocline of stratified lakes and reservoirs, and the whole column of unstratified lakes and reservoirs (302.206(b)), except Appendix D waters","August through February"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.206(b)","page":20,"quote":"C) 5.5 mg/L as a daily mean averaged over 30 days."}},{"id":"cad0f6197c06c8e0","parameter":"Dissolved oxygen","value":"5 mg/L","value_num":5,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","General Use waters: waters of the State for which there is no specific designation (35 Ill. Adm. Code 302.201)","all sectors of the main body of the streams listed in Appendix D of Part 302 (302.206(c))","March through July"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.206(c)","page":21,"quote":"A) 5.0 mg/L at any time; and"}},{"id":"d0ea3db4c71e778c","parameter":"Dissolved oxygen","value":"6.25 mg/L","value_num":6.25,"unit":"mg/L","statistic":"weekly_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","General Use waters: waters of the State for which there is no specific designation (35 Ill. Adm. Code 302.201)","all sectors of the main body of the streams listed in Appendix D of Part 302 (302.206(c))","March through July"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.206(c)","page":21,"quote":"B) 6.25 mg/L as a daily mean averaged over 7 days."}},{"id":"ebff093e1bf4b822","parameter":"Dissolved oxygen","value":"4 mg/L","value_num":4,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","General Use waters: waters of the State for which there is no specific designation (35 Ill. Adm. Code 302.201)","all sectors of the main body of the streams listed in Appendix D of Part 302 (302.206(c))","August through February"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.206(c)","page":21,"quote":"A) 4.0 mg/L at any time;"}},{"id":"1a640c0cb974706a","parameter":"Dissolved oxygen","value":"4.5 mg/L","value_num":4.5,"unit":"mg/L","statistic":"weekly_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","General Use waters: waters of the State for which there is no specific designation (35 Ill. Adm. Code 302.201)","all sectors of the main body of the streams listed in Appendix D of Part 302 (302.206(c))","August through February"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.206(c)","page":21,"quote":"B) 4.5 mg/L as a daily minimum averaged over 7 days;"}},{"id":"25aba9c33711c0d4","parameter":"Dissolved oxygen","value":"6 mg/L","value_num":6,"unit":"mg/L","statistic":"monthly_avg","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","General Use waters: waters of the State for which there is no specific designation (35 Ill. Adm. Code 302.201)","all sectors of the main body of the streams listed in Appendix D of Part 302 (302.206(c))","August through February"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.206(c)","page":21,"quote":"C) 6.0 mg/L as a daily mean averaged over 30 days."}},{"id":"55dc21eb9272d661","parameter":"Dissolved oxygen","value":"90% of saturation","value_num":90,"unit":"% saturation","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","waters of the Lake Michigan Basin (35 Ill. Adm. Code 303.443)","the Open Waters of Lake Michigan (35 Ill. Adm. Code 302.501)"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.502","page":58,"quote":"Dissolved oxygen (STORET number 00300) must not be less than 90% of saturation, except due to natural causes, in the Open Waters of Lake Michigan"}},{"id":"05be9b59d8860a1d","parameter":"Dissolved oxygen","value":"6.0 mg/L","value_num":6,"unit":"mg/L","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","waters of the Lake Michigan Basin (35 Ill. Adm. Code 303.443)","the waters of the Lake Michigan Basin other than the Open Waters of Lake Michigan"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.502","page":58,"quote":"The other waters of the Lake Michigan Basin must not be less than 6.0 mg/L during at least 16 hours of any 24 hour period, nor less than 5.0 mg/L at any time."}},{"id":"12f6743658a13e8c","parameter":"Dissolved oxygen","value":"5.0 mg/L","value_num":5,"unit":"mg/L","statistic":"instant","direction":"min","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:dissolved oxygen","place":["US-IL"],"conditions":["receiving_water is freshwater","waters of the Lake Michigan Basin (35 Ill. Adm. Code 303.443)","the waters of the Lake Michigan Basin other than the Open Waters of Lake Michigan"],"cite":{"instrument":"us_il_wqs","title":"Illinois 35 Ill. Adm. Code 302 Water Quality Standards: general use (Subpart B), public and food processing water supply (Subpart C) and Lake Michigan Basin (Subpart E) numeric standards","issuer":"State of Illinois, Pollution Control Board","edition":"35 Ill. Adm. Code Part 302 effective June 24, 2019, as US EPA posts it in effect for CWA purposes","source_url":"https://www.epa.gov/sites/default/files/2019-11/documents/ilwqs-title35-part302.pdf","source_sha256":"5e0bbfc56069872e1b0fbe1ed98672de1c3b2fda558ded29028800410f829b13","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"not verified"},"section":"35 Ill. Adm. Code 302.502","page":58,"quote":"The other waters of the Lake Michigan Basin must not be less than 6.0 mg/L during at least 16 hours of any 24 hour period, nor less than 5.0 mg/L at any time."}}],"next":[{"tool":"check_values","says":"Has your user measured this? check_values sets each of their results beside every row held here, with a verdict and the row's cite.","arguments":{"place":"US-IL"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"dissolved oxygen\", value, unit}, ...], any other parameters too."},"post":"/api/v1/check"},{"tool":"read_certificate","says":"Has your user a laboratory certificate? read_certificate reads every row it prints, each with its page, and checks them against these limits.","arguments":{"place":"US-IL"},"needs":{"content_base64":"The laboratory's certificate (PDF) or its XLSX, XLS or CSV export, as base64; or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}