TABLE 3.

Microbial indicator levels^a

Sampling site	E. coli concn (CFU/100 ml)		FC concn (MPN/100 ml)		TCC concn (CFU/100 ml)		TCM concn (MPN/100 ml)		SASF concn (MPN/100 ml)
	M	R	M	R	M	R	M	R	M	R
S1	2.2 × 106	0.5 × 106–95 × 106	3.5 × 105	1.7 × 105–50 × 105	4.7 × 107	2.4 × 107–26 × 107	1.1 × 107	0.2 × 107–8.0 × 107	1.8 × 105	0.02 × 104–80 × 104
S2	2.0 × 106	0.3 × 106–6.7 × 106	5.0 × 105	4.0 × 105–110 × 105	1.8 × 107	0.2 × 107–3.8 × 107	3.0 × 106	0.1 × 106–50 × 106	9.0 × 104	3.0 × 104–300 × 104
S3	7.0 × 106	3.8 × 106–24 × 106	2.3 × 105	2.2 × 105–23 × 105	4.4 × 107	1.8 × 107–4.7 × 107	2.3 × 106	0.3 × 106–7.0 × 106	1.7 × 105	1.1 × 105–11 × 105
S4	9.2 × 106	6.5 × 106–11 × 106	7.0 × 105	3.0 × 105–20 × 105	2.0 × 107	1.9 × 107–4.0 × 107	8.0 × 106	5.0 × 106–8.2 × 106	2.8 × 105	0.5 × 105–11 × 105
S5	3.7 × 106	0.4 × 106–7.0 × 106	3.0 × 105	0.7 × 105–23 × 105	1.9 × 107	0.6 × 107–4.1 × 107	3.0 × 106	0.6 × 106–8.0 × 106	8.0 × 104	2.3 × 104–30 × 104
S6	NCD	NCD	8.0 × 101	1.1 × 101–50 × 101	6.0 × 104	2.0 × 104–23 × 104	1.1 × 103	0.3 × 103–8.0 × 103	3.3 × 102	0.4 × 102–13 × 102
S7	1.2 × 101	0.4 × 101–5.0 × 101	5.5 × 101	2.0 × 101–13 × 101	3.7 × 102	1.1 × 102–8.9 × 102	1.5 × 102	1.3 × 102–25 × 102	4.0 × 101	3.8 × 101–4.2 × 101
S8	4.0 × 105	1.0 × 105–9.0 × 105	8.0 × 104	3.0 × 104–22 × 104	2.4 × 106	0.9 × 106–7.6 × 106	2.8 × 105	0.2 × 105–5.0 × 105	2.3 × 104	0.8 × 104–8.0 × 104

^aValues are the result of six samples. Abbreviations: M, median; R, range, NCD, no colonies detected; FC, fecal coliform (concentrations determined with EC media; TCC, total coliform (concentrations determined with Chromocult coliform agar); TCM, total coliform (concentrations determined with lauryl sulfate broth); SASF, sulfite-reducing anaerobic spore formers (concentrations determined with reinforced clostridial medium). For explanation of sampling sites see Table 1.