Section 246-290-632 - Treatment technique violations(1) A treatment technique violation shall be considered a violation of a primary drinking water standard and in the case of an unfiltered system, may result in the purveyor of an unfiltered system being required to install filtration.(2) A treatment technique violation occurs when a system using a surface or GWI source is identified by the department as the source of a waterborne disease outbreak or any of the following occur as applicable: (a) The purveyor providing filtration delivers unfiltered water or fails to meet one or more of the following requirements: (i) Filtration treatment in accordance with WAC 246-290-660; or(ii) Disinfection treatment in accordance with WAC 246-290-662.(b) The purveyor required to install filtration:(i) Fails to meet the interim disinfection requirements under WAC 246-290-672 or as otherwise directed by the department; or(ii) Fails to install filtration or develop an alternate source by the applicable time lines specified in WAC 246-290-670.(c) The purveyor of an unfiltered surface water, or GWI source, meeting the criteria to remain unfiltered: (i) Delivers water with a turbidity level exceeding 5.0 NTU measured at a point immediately prior to the point of primary disinfection; or(ii) Fails to meet one or more of the disinfection requirements under WAC 246-290-692 after the dates specified in WAC 246-290-686.(d) The purveyor of an unfiltered source meeting the criteria to provide a limited alternative to filtration: (i) Delivers water with a turbidity level exceeding 5.0 NTU measured at a point immediately prior to the point of primary disinfection; or(ii) Fails to meet one or more of the disinfection requirements under WAC 246-290-692.(e) A purveyor supplies water from an unfiltered source that has not been previously approved by the department.(f) A purveyor of a department approved unfiltered source that fails to meet the on-going criteria to remain unfiltered: (i) Delivers water with a turbidity level exceeding 5.0 NTU measured at a point immediately prior to the point of primary disinfection; or(ii) Fails to meet one or more of the disinfection requirements under WAC 246-290-692.(g) A purveyor of a department approved unfiltered source that has failed to meet the criteria to provide a limited alternative to filtration: (i) Delivers water with a turbidity level exceeding 5.0 NTU measured at a point immediately prior to the point of primary disinfection; or(ii) Fails to meet one or more of the disinfection requirements under WAC 246-290-692.(h) A purveyor fails to meet the enhanced Cryptosporidium treatment requirements under 40 C.F.R. 141.711 or 141.712.Wash. Admin. Code § 246-290-632
Statutory Authority: RCW 70.119A.180 and 43.20.050. 08-03-061, § 246-290-632, filed 1/14/08, effective 2/14/08. Statutory Authority: RCW 43.02.050 [43.20.050]. 99-07-021, § 246-290-632, filed 3/9/99, effective 4/9/99. Statutory Authority: RCW 43.20.050. 94-14-001, § 246-290-632, filed 6/22/94, effective 7/23/94; 93-08-011 (Order 352B), § 246-290-632, filed 3/25/93, effective 4/25/93.