Summary of water reuse criteria for select nonpotable applications from reuse programs from several states
Summary of water reuse criteria for select nonpotable applications from reuse programs from several statesa
Link to this table
| Water Quality Parameter | Water Quality Limit – Food Crop Irrigation | Water Quality Limit – Restricted Access Irrigation | Water Quality Limit – Unrestricted Access Irrigation |
|---|---|---|---|
| Total Coliform | 2.2 total coliform | 23 total coliform/100mL | 2.2 total coliform/100mL |
| Fecal Coliform | No Detect/100mL (some states prohibit usea) | 200 fecal coliform/100mL | No Detect/100mL – 20 fecal coliform/100mL |
| E. coli | N/A | 126 E. coli/100mL (only CO uses E. coli as a standard) | 126 E. coli/100mL (only CO uses E. coli as a standard) |
| Turbidity | 2 NTU | N/A | 2 NTU – 3 NTU |
| TSS | N/A | 20-30 mg/L | 5 mg/L |
| BOD | 10 mg/L BOD | 20-30 mg/L | 5-10 mg/L |
| CBOD | N/A | 15-20 mg/L | 5-20 mg/L |
| pH | N/A | N/A | N/A |
Note: Many of these standards are based on water quality limits established for reclaimed water (treated wastewater), not stormwater specifically
a – Includes review of water reuse programs in AZ, CA, CO, FL, GA, HI, NV, NM, NC, OR, TX, UT, WA, and US EPA guidelines