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Botanical And Zoological Gardens, Nashville, Tennessee. NPDES permit TN0080630, in force until Jan 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Mar, Jun, Sep, Dec | CJD |
| Turbidity | daily maximum | report only (NTU) | Mar, Jun, Sep, Dec | CJD |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJD |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJD |
| pH | daily maximum | report only (SU) | Mar, Jun, Sep, Dec | CJD |
| Solids, total suspended | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJD |
| Solids, settleable | daily maximum | report only (mL/L) | Mar, Jun, Sep, Dec | CJD |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJD |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJD |
| Floating solids, waste or visible foam-visual | value | report only (N=0;Y=1) | Mar, Jun, Sep, Dec | CJD |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Sep, Dec | CJD |
| Chlorine, total residual | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJD |
| E. coli | daily maximum | report only (#/100mL) | Mar, Jun, Sep, Dec | CJD |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | Mar, Jun, Sep, Dec | CJU |
| Turbidity | daily maximum | report only (NTU) | Mar, Jun, Sep, Dec | CJU |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJU |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJU |
| pH | daily maximum | report only (SU) | Mar, Jun, Sep, Dec | CJU |
| Solids, total suspended | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJU |
| Solids, settleable | daily maximum | report only (mL/L) | Mar, Jun, Sep, Dec | CJU |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJU |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJU |
| Floating solids, waste or visible foam-visual | value | report only (N=0;Y=1) | Mar, Jun, Sep, Dec | CJU |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Sep, Dec | CJU |
| Chlorine, total residual | daily maximum | report only (mg/L) | Mar, Jun, Sep, Dec | CJU |
| E. coli | daily maximum | report only (#/100mL) | Mar, Jun, Sep, Dec | CJU |
| Turbidity | daily maximum | report only (NTU) | Jun, Dec | SW3 |
| Oxygen, dissolved [DO] | daily maximum | report only (mg/L) | Jun, Dec | SW3 |
| BOD, 5-day, 20 deg. C | daily maximum | report only (mg/L) | Jun, Dec | SW3 |
| pH | daily maximum | report only (SU) | Jun, Dec | SW3 |
| Solids, total suspended | daily maximum | report only (mg/L) | Jun, Dec | SW3 |
| Solids, settleable | daily maximum | report only (mL/L) | Jun, Dec | SW3 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Jun, Dec | SW3 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Jun, Dec | SW3 |
| Oil and grease | daily maximum | report only (mg/L) | Jun, Dec | SW3 |
| Floating solids, waste or visible foam-visual | value | report only (N=0;Y=1) | Mar, Jun, Sep, Dec | SW3 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | Mar, Jun, Sep, Dec | SW3 |
| Chlorine, total residual | daily maximum | report only (mg/L) | Jun, Dec | SW3 |
| E. coli | daily maximum | ≤ 410 #/100mL (alert, not enforceable) | Mar, Jun, Sep, Dec | SW3 |
Cited limits by parameter: Tennessee's rules and the federal ones.
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