{"permit":"TX0131857","name":"COLORADO RIVER MUNICIPAL WATER DISTRICT","state":"TX","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/TX0131857"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Big Spring, Texas","href":"https://www.openstreetmap.org/?mlat=32.257456&mlon=-101.43092#map=14/32.257456/-101.43092"},{"label":"Last 12 months","text":"Over a limit 4 times, last in September 2026 (Selenium, total [as Se]; Nitrogen, ammonia total [as N]). 1 of 12 reports filed late"},{"label":"Permit","text":"In force until Jun 29, 2028"}],"renewal_due":null,"renewal_check":{"offered_because":"application_due_within_18_months","application_due":"2028-01-01","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/TX0131857#renewal","says":"Each limit a renewal could tighten or add, from the state's water-quality standards and the federal rules for this kind of discharge, each cited to its rule, beside EPA's 12-month record; a rule we do not hold is named, never guessed. A person orders it on the permit's page with their email; it is sent by email within 5 business days."},"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":4,"over_by":[["Selenium, total [as Se]",2],["Nitrogen, ammonia total [as N]",2]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Selenium, total [as Se]","times":2,"find_limits":{"parameter":"selenium","place":"US-TX","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=selenium&place=US-TX&medium=surface_water"},{"parameter":"Nitrogen, ammonia total [as N]","times":2,"find_limits":{"parameter":"ammonia","place":"US-TX","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=ammonia&place=US-TX&medium=surface_water"}],"limits":[{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"monthly minimum","qualifier":">=","value":"5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"11","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily average","qualifier":"<=","value":"9","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"Chloride [as Cl]","parameter_code":"00940","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"Sulfate, total [as SO4]","parameter_code":"00945","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"Selenium, total [as Se]","parameter_code":"01147","statistic":"daily average","qualifier":"<=","value":".00565","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"Selenium, total [as Se]","parameter_code":"01147","statistic":"daily maximum","qualifier":"<=","value":".0119","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily average","qualifier":"<=","value":".75","unit":"MGD","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":"<=","value":".85","unit":"MGD","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"Solids, total dissolved","parameter_code":"70295","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"daily average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"pH range excursions, > 60 minutes","parameter_code":"82581","statistic":"monthly total","qualifier":"<=","value":"0","unit":"occur/mo","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"},{"outfall":"001","parameter":"pH range excursions, monthly total accum","parameter_code":"82582","statistic":"monthly total","qualifier":"<=","value":"446","unit":"min","report_only":false,"enforceable":true,"months":"all","limit_set":"WASTE WATER TREATMENT - 001"}],"next":[{"tool":"find_limits","says":"What do the rules say about what it went over on? find_limits gives the cited state and federal limits for it, each with its rule; `get` is the address to fetch, and `over_limits` holds one for each parameter.","arguments":{"parameter":"selenium","place":"US-TX","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=selenium&place=US-TX&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=selenium&place=US-TX&medium=surface_water","page":"https://passage-data.com/limits/US-TX/selenium"},{"tool":"check_dmr","says":"Before your user files this permit's DMR: check_dmr sets each value beside the permit's limit for that period, with EPA's violation rule's verdict.","arguments":{"permit":"TX0131857"},"needs":{"period_end":"The reporting period: its month (2026-09).","values":"The period's values as your user will file them: [{outfall, parameter, statistic, value, unit}, ...]."},"post":"/api/v1/dmr/check","url":"https://passage-data.com/api/v1/dmr/check","page":"https://passage-data.com/dmr/?permit=TX0131857"},{"tool":"fill_dmr","says":"Has your user the plant's raw daily results? fill_dmr computes the period's DMR values from them, each with the rows it came from.","arguments":{"permit":"TX0131857"},"needs":{"period_end":"The reporting period: its month (2026-09).","rows":"The plant's results: [{date, parameter, value, unit, point}, ...]; or `table`, the lab's or plant's export as text."},"post":"/api/v1/dmr/fill","url":"https://passage-data.com/api/v1/dmr/fill","page":"https://passage-data.com/dmr/?permit=TX0131857"}]}