JHMI Utilities, LLC - Johns Hopkins Hospital

NPDES permit MD0071196 · Minor NON-POTW · effective, expires 2027-08-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

12values over a limit
0required values missing, on 0 form(s)
2of 20 forms filed late

Last period with anything received: 2026-06-30. Most often over: Copper, total [as Cu] (12).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (58)

OutfallParameterStatisticLimitMonths
001pHMINIMUM >= 6 SU all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Hardness, total [as CaCO3]DAILY MX report only all year
001Copper, dissolved [as Cu]MO AVG report only all year
001Copper, dissolved [as Cu]MO AVG report only all year
001Copper, dissolved [as Cu]DAILY MX report only all year
001Copper, dissolved [as Cu]DAILY MX report only all year
001Copper, total [as Cu]MO AVG <= .009 mg/L all year
001Copper, total [as Cu]MO AVG <= .009 mg/L all year
001Copper, total [as Cu]DAILY MX <= .013 mg/L all year
001Copper, total [as Cu]DAILY MX <= .013 mg/L all year
001Temp. diff. between up/down stream deg. FDAILY MX <= 0 deg F all year
001Temp. diff. between up/down stream deg. FDAILY MX <= 0 deg F all year
001Chlorine, total residualMO AVG < .1 mg/L all year
001Chlorine, total residualMO AVG < .1 mg/L all year
001Chlorine, total residualDAILY MX < .1 mg/L all year
001Chlorine, total residualDAILY MX < .1 mg/L all year
001FlowMO AVG report only all year
001FlowMO AVG report only all year
001FlowDAILY MX report only all year
001FlowDAILY MX report only all year
002pHMINIMUM >= 6 SU all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002pHMAXIMUM <= 9 SU all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]MO AVG report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Hardness, total [as CaCO3]MO AVG report only all year
002Hardness, total [as CaCO3]MO AVG report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Copper, dissolved [as Cu]MO AVG report only all year
002Copper, dissolved [as Cu]MO AVG report only all year
002Copper, total [as Cu]MO AVG <= .009 mg/L all year
002Copper, total [as Cu]MO AVG <= .009 mg/L all year
002Copper, total [as Cu]DAILY MX <= .013 mg/L all year
002Copper, total [as Cu]DAILY MX <= .013 mg/L all year
002Temp. diff. between up/down stream deg. FDAILY MX <= 0 deg F all year
002Temp. diff. between up/down stream deg. FDAILY MX <= 0 deg F all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualMO AVG <= .1 mg/L all year
002Chlorine, total residualMO AVG <= .1 mg/L all year
002Chlorine, total residualDAILY MX <= .1 mg/L all year
002Chlorine, total residualDAILY MX <= .1 mg/L all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states