Section 18.80.310. Routine sampling and analysis.

	(a)  The owner of a community water system, non-transient non-community water system, or transient non-community water system shall ensure that routine sampling and analysis of the water samples from that system are conducted at points and times in compliance with this chapter.  The department will require routine sampling at particular points and times and at more frequent intervals, if the department determines that the sampling serves the interests of the public health.  
	(b)  If a public water system is contaminated, or at risk of becoming contaminated, by a substance or material harmful to human health, the department will direct the owner or operator to conduct sampling at particular points and times for that substance or material.  
	(c)  The department will require the owner or operator of a Class C public water system  to sample, analyze, and report a contaminant listed in 18 AAC 80.300, at frequencies determined by the department but no more often than daily if   
		(1) the department determines that a potential exists for that contaminant to occur; or   
		(2) that contaminant exceeds the MCL set by 18 AAC 80.300.  
	(d)  If a public water system provides water to one or more other public water systems, and if the department determines that modification is necessary to serve the interests of public health, the department will modify the monitoring requirements of this chapter by considering the water systems as a single system.  
	(e)  A water hauler shall  
		(1) obtain water from a public water system that is approved by the department under 18 AAC 80.210 and that has the same or higher system classification as the water hauler; and  
		(2) submit to the department the results of one total coliform analysis per month per vehicle, unless the department, in writing, reduces the monitoring frequency. The department will reduce the monitoring frequency if, in the previous 12 months during which the water hauler provided water to the public, the water hauler did not have a total coliform monitoring violation. The department will not reduce the monitoring frequency to less than one sample per quarter per water hauler.  
	(f)  A public water system with a primary water source that is a rain catchment system is exempt from the monitoring requirements of (a) - (e) of this section. The owner or operator shall meet the following monitoring requirements:  
		(1) the owner of a community water system, non-transient non-community water system, or transient non-community water system shall ensure that  
			(A) the water system is in compliance with  
				(i) the provisions of 18 AAC 80.035 for disinfection;  
				(ii) the provisions of 18 AAC 80.315(b)(4) for nitrate;  
				(iii) the requirements set under 18 AAC 80.650 for filtration;  
				(iv) the provisions of 18 AAC 80.400 - 18 AAC 80.430 and 18 AAC 80.440 for coliform bacteria; and  
				(v) the provisions of 18 AAC 80.500 - 18 AAC 80.505 for lead and copper; and  
			(B) within one year after the system begins to provide potable water, one sample is taken for the contaminants for which MCL's are set under 18 AAC 80.300(b)(1) and (2)(B); each sample must be taken at an entry point to the distribution system and must be collected after treatment; the owner shall ensure that the results of the sampling are reported to the department, subject to the report certification requirements of 18 AAC 80.1900; and   
		(2) the owner of a community water system or non-transient non-community water system that serves a resident population of less than 10,000 individuals shall ensure that, within one year after the system begins to provide potable water, one sample is taken for the disinfection byproducts listed in 40 C.F.R. 141.64(a), adopted by reference in 18 AAC 80.010(a); the sample must be taken at the most distant point from treatment in the distribution system; the owner shall ensure that results of the sampling are reported to the department, subject to the report certification requirements of 18 AAC 80.1900.  

Authorities

46.03.020;46.03.050;46.03.070;46.03.710;46.03.720

Notes

Reference

18 AAC 34.080
18 AAC 80.1220
18 AAC 80.330
18 AAC 80.340

Authority

AS 46.03.020 AS 46.03.050 AS 46.03.070 AS 46.03.710 AS 46.03.720

History

Eff. 10/1/99, Register 151; am 9/28/2001, Register 159; am 8/19/2006, Register 179; am 4/24/2009, Register 190