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Tap Water Testing

  1. Consumer Related Water Testing Questions
  2. Do New York City residents receive free lead testing for their drinking water?
  3. How can I get my tap water tested?
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  1. Laboratory Questions On Analytical Methods
  2. An instrument manufacturer is recommending that we use a 0.20 micron filter to filter samples for methods EPA 300.1 and 300.0. Would this be acceptable as the method states a 0.45 micron filter for samples and a 0.2 micron filter for standards?
  3. Are the elemental equations in Method 200.8's Table 5 mandatory?
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  1. General Laboratory Questions
  2.  How do E.Coli labs register for DCTS?
  3. Appendix B to 40 CFR Part 136 is proposed to be changed with the current MUR. How will this be applied to the SDWA? Some approved methods reference Appendix B of part 136 (example: OIA-1677 and HachTNTplus 835/836 Method 10206) will this change their MDL requirements? Other methods (example: EPA 300.0 and 524.2) have MDL procedures written into them without a reference to Appendix B of part 136, but generally follow the procedures the way they currently are written. Will these methods be affected? Part 141 specifies Part 136 appendix B be used (example (20) Each certified laboratory must determine the method detection limit (MDL), as defined in appendix B to part 136, at which it is capable of detecting VOCs. The acceptable MDL is 0.0005 mg/l. This concentration is the detection concentration for purposes of this section. Will this requirement override the requirement that the laboratory must follow the method?
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