Zinc

Zinc is considered an essential element in human and animal nutrition . IT can be naturally occurring , the most significant source being zinc ores : sphalerite (ZnS) and smithsonite (ZnC03). These compounds end up in water on locations where zinc ores are found.

It may come from industrial contamination such as wastewaters containing zinc stem from galvanic industries and battery production . Zinc compounds are applied for many different purposes including parchment production . Zinc oxide is a constituent of salves , paints and catalyzers, zinc vitriol is applied as a fertilizer, and zinc bacitracin is applied as a growth stimulant in animal husbandry. Zinc can also be the result of corrosion of fixtures mostly brass, of which zinc is a major component.

In concentrations over 5 mg/I, zinc produces an objectionable taste and may cause water to appear milky, or upon boiling, to seem to have a greasy surface scum. Cases of zinc poisoning have been reported from prolonged consumption of water at concentrations of 40 mg/I.

What Do The Results Mean? Is It Regulated?

The average zinc concentration in seawater is 0.6-5 ppb. Rivers generally contain between 5 and 10 ppb zinc. Algae contain 20-700 ppm, sea fish and shells contain 3-25 ppm, oysters contain 100-900 ppm and lobsters contain 7-50 ppm.

Zinc is regulated as a secondary contaminant under the Safe Drinking Water Act. This means it is regulated based upon the aesthetic effects it may produce . The EPA has established a secondary MCL of 5 mg/L. The World Health Organization stated a legal limit of 5 mg Zn2+/L.

How Can You Test For Zinc?

You can analyze for zinc using 3500-Zn B. Zincon Method, which is a Standard Method utilizing a colorimeter. This can be an accurate analysis for field measurements .Laboratories analyzing drinking water samples can utilize various methods including EPA method 200 .7 and 200 .8 which utilize an Inductively Coupled Plasma (ICP) or the Standards Method 31138 which uses Graphite Furnace.

Water Treatment Options

If the presence of zinc is due to corrosion, it is best to treat the source of the problem by using a soda ash feed. You can also successfully remove zinc using distillation or reverse osmosis.

Contact Sanatoga Water Conditioning To Learn More Or To Schedule A Consultation.

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"Never disappoints! I've had two water tests conducted on my home. During the most recent John shared his knowledge and expertise on not only the Well tank pump that was in serious need of replacement but also options for my water softener. I never felt pressured to commit to something I didn't need. They made sure I had all the information and let me make a decision based on what made sense for me. Great experience from first call to final product!"

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"We are new to the area and new to well water. We have used Sanatoga twice now - for routine maintenance and a water softener install. Juan is always on time and very attentive. We feel fortunate we have someone who cares about our house as if it were his own and a company we can count on in the years to come.
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   Jonathan DeLone 
 October 29, 2026
 
 
 Trustindex verifies that the original source of the review is Google. Always a pleasure working with JD and Sanatoga Water
  
 
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   Ed Mininger 
 October 28, 2026
 
 
 Trustindex verifies that the original source of the review is Google. They kept me informed and showed up when scheduled. The service was efficiently and professionally done.
  
 
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   Victoria Doland 
 October 21, 2026
 
 
 Trustindex verifies that the original source of the review is Google. JD stopped by this morning to do a check on our 2 yr old water system.  He was very informative and found that our water softener was not working properly - which I suspected already.  He filled the water softener with salt and is going to have the company follow up with me to fix the water softener.  Service people are top notch! Thanks JD!
  
 
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   john n 
 October 20, 2026
 
 
 Trustindex verifies that the original source of the review is Google. The office staff, Alexi, was courteous and keeps me informed as to what services are due when. The technician Juan, tested our water quality first and informed us we did not need to change 2 of the more expensive filters in our 5 filter under the sink RO system. Juan arrived on time and was honest, friendly and professional. He changed the 3 filters quickly and with no water splashed under the sink. I would highly recommend SWC for all your RO system needs including parts or service.
  
 
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   Jackie Scarcelle 
 October 19, 2026
 
 
 Trustindex verifies that the original source of the review is Google. JD is very polite and always wanting to please.  I would recommend Sanatoga Water to anyone!
  
 
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   Joe Zmuida 
 October 16, 2026
 
 
 Trustindex verifies that the original source of the review is Google. Pleasant service, explained everything and was in and out. Thank you JD
  
 
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   Joanne Cushman 
 October 16, 2026
 
 
 Trustindex verifies that the original source of the review is Google. Juan was great!  Thank you.
  
 
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   Jessica Zweifel 
 October 16, 2026
 
 
 Trustindex verifies that the original source of the review is Google. Always excellent service with Sanatoga water. The maintained me on schedule and reminder never worry about asking any questions because they’re always there to help.  JD it’s been my tech for a few deliveries already and he is always very. professional and respectful.
  
 
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   Zachary Hartman 
 October 16, 2026
 
 
 Trustindex verifies that the original source of the review is Google. JD was very nice, informative, and efficient with his work.
  
 
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   Robin Poggi 
 October 9, 2026
 
 
 Trustindex verifies that the original source of the review is Google. Prompt, professional service.Very easy to deal with.