שאלה | Can we say that the characteristics of onsite domestic wastewater vary greatly between sources (streams)?

Can we say that the characteristics of onsite domestic wastewater vary greatly between sources (streams)?

		While this may be true in some cases, it cannot be generalized.
		Yes, domestic wastewater streams vary greatly between sources.
		Yes, the differences between domestic streams are essentially due to the large variation in nitrogen and phosphorus.
		No, since most people (particularly in a certain country) have similar habits, domestic wastewater streams do not significantly vary between sources.