Current status of wastewater treatment in Crete (adapted from Tzanakakis et al. 2020)
| Population served . | No. of operating WWTPs . | Capacity, hm3/yr . | Reused, hm3/yr . | Potential reuse opportunities . | Comments . |
|---|---|---|---|---|---|
| <2,000 | 67 | 3.90 | 0.75 | Agricultural irrigation | Numerous additional small projects (more than 650a) serving less than 2,000 persons are in various stages of planning and development. When completed, these treatment plants will serve 15–20% of the total population of Crete. |
| 2,000–5,000 | 15 | 4.65 | 0.90 | Agricultural irrigation and landscape irrigation | Two more plants are under implementation and three are under construction. |
| 5,000–15,000 | 10 | 8.90 | 2.25 | Agricultural irrigation, landscape irrigation, and groundwater recharge. | One more plant remains under implementation and another one is under construction. When those treatment plants (including the above) are completed, the total population served will rise above 80%. |
| 15,000–100,000 | 5 | 12.00 | 0.55 | Agricultural irrigation, landscape irrigation, groundwater recharge, and indirect and direct potable reuse | |
| 100,000–150,000 | 1 | 10.20 | Agricultural irrigation and landscape irrigation | ||
| >150,000 | 1 | 14.50 | 1.00 | Agricultural irrigation, landscape irrigation, groundwater recharge, and indirect and direct potable reuse | |
| Total | 99 | 54.15b | 5.45c |
| Population served . | No. of operating WWTPs . | Capacity, hm3/yr . | Reused, hm3/yr . | Potential reuse opportunities . | Comments . |
|---|---|---|---|---|---|
| <2,000 | 67 | 3.90 | 0.75 | Agricultural irrigation | Numerous additional small projects (more than 650a) serving less than 2,000 persons are in various stages of planning and development. When completed, these treatment plants will serve 15–20% of the total population of Crete. |
| 2,000–5,000 | 15 | 4.65 | 0.90 | Agricultural irrigation and landscape irrigation | Two more plants are under implementation and three are under construction. |
| 5,000–15,000 | 10 | 8.90 | 2.25 | Agricultural irrigation, landscape irrigation, and groundwater recharge. | One more plant remains under implementation and another one is under construction. When those treatment plants (including the above) are completed, the total population served will rise above 80%. |
| 15,000–100,000 | 5 | 12.00 | 0.55 | Agricultural irrigation, landscape irrigation, groundwater recharge, and indirect and direct potable reuse | |
| 100,000–150,000 | 1 | 10.20 | Agricultural irrigation and landscape irrigation | ||
| >150,000 | 1 | 14.50 | 1.00 | Agricultural irrigation, landscape irrigation, groundwater recharge, and indirect and direct potable reuse | |
| Total | 99 | 54.15b | 5.45c |
aWWTPs under implementation are not included.
bThe potential for agricultural use is about 10.1% of the total water used for agricultural irrigation.
cAbout 1.10% of the water is now reused for agricultural purposes.