| Indicator | Single Sample Standard (SSS) (cfu or MPN per 100 mL−1) | 30-Day Sample Standard (30-DSS) (cfu or MPN per 100 mL−1) |
| Total Coliforms | 10,000 | 20% of samples > 1000 |
| Fecal Coliforms | 400 | 200 (GM) |
| Enterococci | 104 | 35 (GM) |
| Total/Fecal Ratio | When TC > 1000 and TC/FC ≤ 10 also, when TC > 1000 and TC/FC ≤ 5 |
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