One of our facilities in eastern Indiana employs well water for the manufacture of liquid dish detergents. The water hardness has changed gradually over the past year or so and is now quite hard at about 275 ppm. Not surprisingly, this is beginning to affect the performance of the end product as hardness would be expected to reduce detergency. Short of installing an expensive water softener to treat 80,000 to 100,000 pounds of water daily, would it suffice to add EDTA-sodium or something similar in a calculated amount to counteract this hardness problem? This is sometimes done anyway with cleaning products to enhance "softness" of a product. Thanks for any suggestions.
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