{"query":{"parameter":"dichlorobromomethane","place":"US-AZ","medium":null,"statistic":null,"kind":null},"searched":{"places":["US-AZ","US"],"parameter_keys":["cas:75-27-4","name:total trihalomethanes","name:trihalomethanes totaux"],"names_matched":[["dichlorobromomethane","cas:75-27-4"],["total trihalomethanes bromoform chlorodibromomethane dichlorobromomethane and chloroform","name:total trihalomethanes"],["trihalomethanes totaux chloroforme bromodichloromethane chlorodibromomethane et bromoforme","name:trihalomethanes totaux","bromodichloromethane"]],"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":1,"names":["Total trihalomethanes (TTHM)"],"says":"1 rows share a parameter key with a longer name holding \"dichlorobromomethane\" 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":13,"offset":0,"returned":13,"next_offset":null,"rows":[{"id":"ade061e72e80d2ba","parameter":"Bromodichloromethane","value":"TTHM See (g)","value_num":80,"unit":"µg/L","statistic":"annual_avg","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:75-27-4","place":["US-AZ"],"conditions":["receiving_water is freshwater","surface water with the designated use DWS, domestic water source (A.A.C. R18-11-104; uses by water in Appendix B)","the sum of the four trihalomethanes is 80 µg/L as a rolling annual average (note g)"],"cite":{"instrument":"us_az_wqs","title":"Arizona A.A.C. R18-11 Appendix A: Table 1 numeric water quality standards by designated use, and Tables 2-9 hardness-dependent metals","issuer":"State of Arizona, Department of Environmental Quality","edition":"18 A.A.C. 11 as US EPA posts it in effect for CWA purposes (effective June 10, 2025; cover September 19, 2025); Appendix A as amended at 22 A.A.R. 2328, effective August 2, 2016 (Supp. 16-4)","source_url":"https://www.epa.gov/sites/default/files/2014-12/documents/az-chapter11.pdf","source_sha256":"99f94cb118d44c2d748701484be39ab062258b07e3912fae7c9a651fcc4fc6ce","fetched_at":"2026-10-14","source_status":{"checked":"2026-10-15","status":"unchanged"},"section":"18 A.A.C. 11, Appendix A, Table 1","page":35,"quote":null}},{"id":"cae0b38870a3ca53","parameter":"Bromodichloromethane","value":"17","value_num":17,"unit":"µg/L","direction":"max","kind":"guideline","medium":"surface_water","level":"regional","parameter_key":"cas:75-27-4","place":["US-AZ"],"conditions":["receiving_water is freshwater","surface water with the designated use FC, fish consumption (A.A.C. 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or file_url, a public https address of it."},"post":"/api/v1/certificate"}]}