{"query":{"parameter":"4 4 dde","place":"US-ND","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-ND","US"],"parameter_keys":["cas:72-55-9","name:4,4'-dde","name:4,4’-dde","name:4-4’-dichlorodiphenyl- dichloroethylene","cas:50-29-3"],"names_matched":[["4 4 dde","cas:72-55-9"],["4 4 dde","name:4,4'-dde"],["4 4 dde","name:4,4’-dde"],["4 4 dichlorodiphenyl dichloroethylene dde","name:4-4’-dichlorodiphenyl- dichloroethylene"],["p p dichlorodiphenyltrichloroethane ddt and metabolites ddd and dde","cas:50-29-3","p p dde"]],"match":"exact+contains","order":"The place's own instruments first, then each place above it, each in its register's order; rows for a marine receiving water after the rest, as none of the place's own rows names a marine, salt, estuarine, coastal or ocean water","not_sent":{"rows":15,"names":["4,4'-DDT","Dichlorodiphenyltrichloroethane, p,p'- (DDT)","p,p′-Dichlorodiphenyltrichloroethane (DDT)"],"says":"15 rows share a parameter key with a longer name holding \"4 4 dde\" but are printed under names without these words (that key is wider than the name): not sent. Ask for one by its name or CAS number."}},"total":9,"offset":0,"returned":9,"next_offset":null,"rows":[{"id":"4e4889f622fb1352","parameter":"4,4'-DDE","value":"0.000018","value_num":0.000018,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:4,4'-dde","place":["US-ND"],"conditions":["receiving_water is freshwater","human health: class I, IA and II streams and the classified lakes and reservoirs of appendix II (stream class: appendix I)"],"cite":{"instrument":"us_nd_wqs","title":"North Dakota Standards of Quality for Waters of the State (N.D. Admin. Code ch. 33.1-16-02.1): Table 1 maximum limits by stream class and Table 2 water quality criteria","issuer":"State of North Dakota, Department of Environmental Quality","edition":"N.D. Admin. Code ch. 33.1-16-02.1, effective January 1, 2019, amended January 1, 2024, as US EPA posts it in effect for CWA purposes (EPA approved the 2024 amendments March 4, 2024; the chronic mercury criterion 0.012 µg/L stays in effect after EPA's July 15, 2022 disapproval of 0.88 µg/L)","source_url":"https://www.epa.gov/sites/default/files/2015-09/documents/ndwqs.pdf","source_sha256":"c16e38155ad97d62102ffd2e2f78f595a0a6304d3ef6fd214f449cce4819a4b4","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"N.D. Admin. Code 33.1-16-02.1-09 Table 2","page":14,"quote":"75-55-9 4,4'-DDE4 0.000018 0.000018"}},{"id":"1aee68f0b6077335","parameter":"4,4'-DDE","value":"0.000018","value_num":0.000018,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"name:4,4'-dde","place":["US-ND"],"conditions":["receiving_water is freshwater","human health: class III streams, and wetlands and class 4 lakes not listed in appendix II (stream class: appendix I; unnamed and intermittent tributaries are class III)"],"cite":{"instrument":"us_nd_wqs","title":"North Dakota Standards of Quality for Waters of the State (N.D. Admin. Code ch. 33.1-16-02.1): Table 1 maximum limits by stream class and Table 2 water quality criteria","issuer":"State of North Dakota, Department of Environmental Quality","edition":"N.D. Admin. Code ch. 33.1-16-02.1, effective January 1, 2019, amended January 1, 2024, as US EPA posts it in effect for CWA purposes (EPA approved the 2024 amendments March 4, 2024; the chronic mercury criterion 0.012 µg/L stays in effect after EPA's July 15, 2022 disapproval of 0.88 µg/L)","source_url":"https://www.epa.gov/sites/default/files/2015-09/documents/ndwqs.pdf","source_sha256":"c16e38155ad97d62102ffd2e2f78f595a0a6304d3ef6fd214f449cce4819a4b4","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"N.D. Admin. Code 33.1-16-02.1-09 Table 2","page":14,"quote":"75-55-9 4,4'-DDE4 0.000018 0.000018"}},{"id":"beee87f00b56c940","parameter":"p,p′-Dichlorodiphenyldichloroethylene (DDE)","value":"0.000018","value_num":0.000018,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:72-55-9","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is freshwater","consumption of water + organism: a water designated a drinking-water source and for fish and shellfish (a designated use the state assigns)"],"cite":{"instrument":"us_nrwqc_human_health","title":"EPA National Recommended Water Quality Criteria — Human Health Criteria Table (water + organism, organism only)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table (fetched 2026-10-09); each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-human-health-criteria-table","source_sha256":"a0229d5a613672b46a000c5b9925dd3a23c3e05914bb020b7f739c69cecbb5fe","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"National Recommended Water Quality Criteria — Human Health Criteria Table","page":null,"quote":"p,p′-Dichlorodiphenyldichloroethylene (DDE) (P) 72559 0.000018 0.000018 2015"}},{"id":"91e5f3addcd63532","parameter":"p,p′-Dichlorodiphenyldichloroethylene (DDE)","value":"0.000018","value_num":0.000018,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:72-55-9","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is freshwater","consumption of organism only: a water designated for fish and shellfish taken from it, not a drinking-water source (fresh or salt)"],"cite":{"instrument":"us_nrwqc_human_health","title":"EPA National Recommended Water Quality Criteria — Human Health Criteria Table (water + organism, organism only)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table (fetched 2026-10-09); each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-human-health-criteria-table","source_sha256":"a0229d5a613672b46a000c5b9925dd3a23c3e05914bb020b7f739c69cecbb5fe","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"National Recommended Water Quality Criteria — Human Health Criteria Table","page":null,"quote":"p,p′-Dichlorodiphenyldichloroethylene (DDE) (P) 72559 0.000018 0.000018 2015"}},{"id":"9bc9491cc02b604b","parameter":"Dichlorodiphenyldichloroethylene, p,p'- (DDE)","value":"2","value_num":2,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:72-55-9","place":["US"],"conditions":["Resident Soil (mg/kg)"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":null,"quote":null,"table":"sols","column":"residentiel"}},{"id":"8558bb579112fe58","parameter":"Dichlorodiphenyldichloroethylene, p,p'- (DDE)","value":"9.3","value_num":9.3,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:72-55-9","place":["US"],"conditions":["Industrial Soil (mg/kg)"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":null,"quote":null,"table":"sols","column":"industriel"}},{"id":"4f304cfa3d622d55","parameter":"Dichlorodiphenyldichloroethylene, p,p'- (DDE)","value":"0.011","value_num":0.011,"unit":"mg/kg","direction":"max","kind":"guideline","medium":"soil","level":"national","parameter_key":"cas:72-55-9","place":["US"],"conditions":["Protection of Groundwater SSLs: Risk-based SSL (mg/kg); SSL values are based on DAF=1"],"cite":{"instrument":"us_rsl_soil","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Soil","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":null,"quote":null,"table":"ssl","column":"risque"}},{"id":"9e4da7056aa94d64","parameter":"Dichlorodiphenyldichloroethylene, p,p'- (DDE)","value":"0.046","value_num":0.046,"unit":"µg/L","direction":"max","kind":"guideline","medium":"drinking_water","level":"national","parameter_key":"cas:72-55-9","place":["US"],"conditions":["Tap Water (ug/L): Regional Screening Level (RSL) Summary Table (TR=1E-06, HQ=1) November 2024"],"cite":{"instrument":"us_rsl_tapwater","title":"US EPA — Regional Screening Levels (RSLs), Summary Table (TR=1E-06, THQ=1.0), November 2024 — Tap Water","issuer":"U.S. Environmental Protection Agency (EPA)","edition":"November 2024","source_url":"https://semspub.epa.gov/src/document/HQ/405270","source_sha256":"0160dc81b4f55d738a354a74de92488f149946ebfa7c6a6c64592f45348043d7","fetched_at":"2026-09-19","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":null,"page":null,"quote":null,"table":"eau","column":"eau_robinet"}},{"id":"1585045d7591da5e","parameter":"p,p′-Dichlorodiphenyldichloroethylene (DDE)","value":"0.000018","value_num":0.000018,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"national","parameter_key":"cas:72-55-9","place":["US"],"conditions":["EPA's recommendation under Clean Water Act § 304(a): 'State and Tribal governments may use these criteria or use them as guidance in developing their own' — it binds a water once the state adopts it for the water's designated use","receiving_water is marine","consumption of organism only: a water designated for fish and shellfish taken from it, not a drinking-water source (fresh or salt)"],"cite":{"instrument":"us_nrwqc_human_health","title":"EPA National Recommended Water Quality Criteria — Human Health Criteria Table (water + organism, organism only)","issuer":"U.S. Environmental Protection Agency","edition":"EPA web table (fetched 2026-10-09); each criterion carries its publication year","source_url":"https://www.epa.gov/wqc/national-recommended-water-quality-criteria-human-health-criteria-table","source_sha256":"a0229d5a613672b46a000c5b9925dd3a23c3e05914bb020b7f739c69cecbb5fe","fetched_at":"2026-10-09","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"National Recommended Water Quality Criteria — Human Health Criteria Table","page":null,"quote":"p,p′-Dichlorodiphenyldichloroethylene (DDE) (P) 72559 0.000018 0.000018 2015"}}],"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-ND"},"needs":{"rows":"Your user's measured results, as their table prints them: [{parameter: \"4 4 dde\", 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-ND"},"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"}]}