Table 1.
Basic statistical characteristics of microbiological indicators, physicochemical parameters, and water flow rates in the studied sites. Number of collected samples throughout the study is n = 32
| Site | TNP (No 1) | Before STP (No 2) | Intake (No 3) | Trybsz (No 4) | |||||
|---|---|---|---|---|---|---|---|---|---|
| Feature | Unit | Mean (Min–Max) |
CV (%) |
Mean (Min–Max) |
CV (%) |
Mean (Min–Max) |
CV (%) |
Mean (Min–Max) |
CV (%) |
| Q | m3/s | 1.29 (0.48–17.50) |
123 | 3.17 (1.46–14.43) |
70 | 3.34 (1.54–15.19) |
70 | 5.21 (1.51–29.60) |
87 |
| Total coliforms | CFU/100 ml | 1 (0–31,000) |
559 | 243 (0–95,000) |
309 | 1060 (0–78,100) |
241 | 820 (12–54,300) |
214 |
| Total E. coli | 0 (0–50) |
341 | 0 (0–80,000) |
512 | 36 (0–20,000) |
241 | 40 (0–39,100) |
240 | |
| Fecal coliforms | 0 (0–39) |
340 | 21 (0–22,000) |
250 | 6 (0–30,100) |
243 | 620 (0–37,200) |
205 | |
| Fecal E. coli | 0 (0–39) |
420 | 0 (0–7000) |
280 | 0 (0–25,390) |
279 | 30 (0–24,000) |
259 | |
| Mesophilic bacteria | CFU/ml | 15 (0–47,000) |
443 | 125 (0–3100) |
160 | 530 (10–14,510) |
183 | 398 (15–27,500) |
239 |
| Psychrophilic bacteria | 73 (0–13,800) |
308 | 378 (0–24,600) |
252 | 925 (0–42,600) |
218 | 1180 (19–312,000) |
449 | |
| T | °C | 4.9 (3.1–11.0) |
42 | 5.1 (0.0–14.7) |
76 | 4.9 (0.1–15.0) |
78 | 5.3 (0.0–16.0) |
82 |
| pH | pH | 7.76 (6.81–8.40) |
5 | 8.00 (6.94–8.30) |
4 | 7.99 (7.13–8.46) |
4 | 7.99 (7.10–9.19) |
5 |
| EC | μS/cm | 123.5 (58.2–290.6) |
44 | 323.3 (126.6–300.0) |
21 | 220.2 (133.7–306.0) |
22 | 233.4 (142.3–322.7) |
21 |
| TDS | mg/L | 91.3 (42.2–219.8) |
45 | 183.6 (96.1–235.6) |
20 | 178.3 (100.9–241.6) |
20 | 187.7 (108.3–251.3) |
19 |
| NH4+ | 0.0068 (0.0001–0.6383) |
258 | 0.0135 (0.0001–0.0715) |
94 | 0.0402 (0.0001–0.4216) |
131 | 0.0389 (0.0001–0.5855) |
141 | |
| NO3− | 2.077 (0.001–4.921) |
36 | 2.526 (1.512–5.488) |
37 | 2.529 (0.001–5.014) |
40 | 2.927 (1.284–5.566) |
38 | |
| NO2− | 0.0008 (0.0008–0.1076) |
288 | 0.0008 (0.0008–0.5513) |
492 | 0.0008 (0.0008–0.3188) |
322 | 0.0008 (0.0008–0.2777) |
191 | |
| PO43− | 0.0033 (0.0013–0.4321) |
280 | 0.0033 (0.0007–0.1458) |
251 | 0.0033 (0.0022–0.4904) |
193 | 0.0033 (0.0026–0.4904) |
201 | |