EPA · Arkansas · discharge permits by parameter
Hardness, total [as CaCO3] in Arkansas
- 3Permits carrying a limit
- 1With a recorded exceedance
- 2,593Nationwide
A parameter is the substance or the property EPA writes a numeric limit for, and this page counts the Arkansas permits that carry one for Hardness, total [as CaCO3]: 3 permits, of which 1 have a recorded exceedance. Nationwide the same parameter appears in 2,593 permits. Each row below is one permit, and it opens the agency’s own record for that permit.
Permits
| Permit holder | NPDES ID | City | Program | Discharger | Receiving water |
|---|---|---|---|---|---|
| LITTLE ROCK, CITY OF/AHTD MS4 | ARS000002 | LITTLE ROCK | Large municipal storm sewer systems | Major | TRIBS,ARKANSAS RV |
Other pollutants in Arkansas
- Solids, total suspended 1,310
- Solids, settleable 3
- Oil & Grease 379
- Nitrogen, total [as N] 17
- Nitrogen, ammonia total [as N] 533
- Nitrogen, Kjeldahl, total [as N] 8
- Nitrite + Nitrate total [as N] 96
- Phosphorus, total [as P] 189
- Carbon, tot organic [TOC] 8
- Cyanide, total [as CN] 3
- Chloride [as Cl] 40
- Sulfate, total [as SO4] 40
- Arsenic, total recoverable 35
- Cobalt, total recoverable 3
- Iron, total recoverable 5
- Selenium, total recoverable 16
- Tin, total recoverable 3
- Beryllium, total recoverable [as Be] 4
- Chromium, hexavalent [as Cr] 7
- Chromium, total [as Cr] 5
Hardness, total [as CaCO3] nationwide
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