Do Water Filters Lower Ph
Having a good pH residue plays a significant factor in your overall health, which doctors and scientists more often than not agree upon. In your torso, the pH, or potential hydrogen level, is influenced by the nutrient and kind of drinks you consume. pH is the measurement of hydrogen ions concentration. This measurement is based on a scale that goes from 0 to xiv. Information technology is worth taking note that pH levels of vii (seven) is the neutral level, under seven (<7) is the acidic, and above 7 (>seven) is the alkali metal. You may have encountered diet fads or special kinds of drinks that merits to be having "high alkaline." What does this mean, and how does pH level has something to practice with information technology?
In this article, nosotros will discuss the pH level more than. Nosotros volition know the recommended pH level for tap, pure, and filtered drinking water. Furthermore, we will talk over the importance of pH in water and decide its difference with alkalinity.
What is pH?
According to Wikipedia, in chemistry, pH is a scale value to tell whether an aqueous solution is acidic or bones. The numbers range from 0 to 14. Like already mentioned, the lower the scale, information technology is acidic. Meanwhile, the higher the scale, it is bones or alkali metal, and the seventh is the neutral scale.
Some types of foods that are acidic are processed foods like yogurt, fish, and cheese. Meanwhile, some bones foods are vegetables like beets, bell peppers, and kale which are highly alkaline.
Think that not all liquids take a pH value. For example, there is no pH value in gasoline, vegetable oil, or pure alcohol.
pH is used in everyday life, even in science and technology. It is used in cooking when a blistering powder reacts with food to make the appurtenances rise. It is used to design cocktails, food preservation, and cleaners. Finally, pH is important in chemistry, agriculture, medicine, oceanography, engineering, biological science, and water purification.
Why Do We Test our H2o for Ph?
Again, pH is a numerical value that is used to determine if the water is acidic. The water quality regulations specify that the tap h2o should accept a pH level of 6.5 to 9.five. H2o leaving the handling works should have a pH of vii and 9. However, this can change as information technology passes through the network of water mains and reservoirs.
Nosotros consume various beverages and foods with a wide range of pH. For example, citrus fruits like limes, oranges, and lemons are acidic. They have a pH level of 2.0 to four.0. Meanwhile, carbonated drinks like cola accept a pH level of iv.0 to 4.5. On the other manus, egg whites are slightly alkaline, and it has a pH level of viii.0, while the milk of magnesia has a pH level of x.
pH and Alkalinity
The acerbity of a solution is measured using its pH level on a calibration from 0 up to fourteen. The closer the pH level gets to 0, the more acidic it is. Meanwhile, the closer it gets to 14, the more basic it is.
A pH level of 7 means it is neutral. And so basically, those with a pH level beneath 7 are acidic, and those with a pH level in a higher place vii are alkali metal.
Acids and bases are two opposing extremes, then mixing acrid and base of operations of equal extremity makes the solution even out and become neutral, but like mixing hot and cold water.
Although some substances differ in acidity past a unit of measurement of measurement, their actual difference is about tenfold. Meaning the pH scale is logarithmic. For example, tomato juice with pH 4 is ten times more acidic than black coffee, whose pH level is 5.
The concept backside pH is the beingness of Hydrogen (H+) ions that command the acerbity level. pH measures the concentration of H+ and Hydroxide (OH-) ions that make up water (H2O): 1H+ + 1OH- = H2O. If the two ions are of equal concentration, they form water, which is neutral. Still, if H+ is greater than OH-, the substance is acidic, and otherwise, it's bones.
What Does pH Have to do With Water?
The neutral pH of vii, located in the heart of the pH calibration, is pure water. Unluckily, not every kind of water available is pure water, and the chance of getting the actual neutral level is, in fact, rare.
Only why do pH levels alter? The fluctuation is caused by varying factors affecting the alkalinity and acerbity of water.
The chief and most common reason for this is the soil limerick and bedrock where the water is located. The pH of water here can be influenced past the rock type. The acidity of the h2o can nevertheless exist neutralized.
Another cistron tin be the organic material and plant growth nigh the water, which may also influence its acerbity. Plants also give off carbon dioxide in the grade of cell respiration and also during its decomposition. This carbon dioxide reacts with water only to increase its acidity. Other factors are acrid atmospheric precipitation, dumping of chemicals, and coal mine drainage.
Why is pH Important?
Most living things that reside in different bodies of water accept required a range of pH levels in their habitats for optimal growth, survival, and reproduction. An optimal range of pH 6.5-eight.0 is usually preferred by these organisms to take physiological stability. When their habitats' pH levels rise or fall below this range, the organisms become stressed and won't function properly, such every bit reproduction and, worse, surviving.
Other features of lake dynamics are also affected by pH levels. Depression pH tin usually cause the release of unlike toxic elements and compounds from sediments into the water that tin be taken in past animals and plants and tin harm them. pH levels can also influence the availability of different plant nutrients, i.e., Phosphate, ammonia, atomic number 26, and trace metals, in h2o.
What Affects pH?
Many factors affect pH includes the bedrock of a location. Regions with glaciated areas accept more acidic water (lower pH) than those with limestone bedrock, including Lincoln, Rhode Island, whose water has higher pH levels (more basic). Another factor is atmospheric deposition (acid rains). Because of acid rains, the pH levels in lakes lower and make them more acidic.
The water use of humans too affects the pH level of water. Most h2o suppliers frequently enhance the pH level to pH9 of beverage water to prevent the corrosion of the supply pipes. Similarly, wastewater discharge towards lakes includes soap-based substances, which are mostly alkaline, which increases the pH level of water. On the other hand, wastewater handling facilities are required to adjust the pH levels of wastewater outside acceptable limits (U.S. E.P.A. range five – ten) that are to be discharged into streams or estuaries.
Throughout the solar day in a lake or swimming also changes in response to changing CO2 levels. CO2 dissolved in water forms a mild acid. The higher the COii level in the temper, the lower the pH (more acidic). In the morning, CO2 levels are loftier due to the respiration of different living beings that occurred in the pond or lake overnight. Every bit the sun rises, plants and algae begin photosynthesis and consume CO2, causing the pH to rise (more than bones) as the day progresses. Algal blooms can as well significantly increment this event.
How is pH Measured?
In that location are three methods ordinarily used to monitor the quality of water. Mainly laboratory quality pH meter and electrode, pH "pocket pals," and multi-parameter probes and color comparators/pH strips.
The pH meter and electrode offering the highest caste of accuracy and precision. It measures the electric potential, which is a function of the H+ activeness in the sampled h2o. The calibration is accomplished using two buffer solutions. The URI Watershed Watch (URIWW) uses a pH meter and electrode to measure the pH of the lake and stream samples.
The other ii methods are ordinarily used in the field. The pH "pocket pals" and multi-parameter probes are electronic testers that can exist easily carried and dipped directly into the water body, which provide the digital output of the pH level of the tested water. Pocket pals are typically calibrated with i buffer. Conversely, a reagent is added to the water sample that colors the sample for a visual comparison in using the color comparators.
PH strips are dipped into water samples, and their color changes depending on the dipped sample'south pH level. The changed color of the strip is so compared on a pH chart in which the pH level of the sample is adamant.
Common Water pH Levels
Blazon of water | pH level |
Tap water | Varies; typically about 7.5 |
Distilled reverse osmosis water | 5 to vii |
Common bottled waters | six.5 to 7.five |
Bottled waters labeled equally alkaline | viii to 9 |
Ocean h2o | About 8 |
Acrid rain | five to 5.v |
What is the pH of RI Inland Waterways?
The pH level in the lakes and ponds of Rhode Island unremarkably decreases from Northward to South. Every bit monitored by URIWW in 2003, the pH range of inland waterways was 5.1 - eight.2
The pH Level of Drinking Water
Although its pH level is not a health concern, acidic water corrodes the pipes from the plumbing systems, harboring harmful metals that humans may eat. You can visit the website: "Healthy Drinking Waters for Rhode Islanders: pH-Acidity of Private Drinking Water Wells," a publication of the RI Department of Health and URI Cooperative Extension, for more than inquiries about the pH level in private drinking water wells.
What is Alkalinity?
Alkalinity is the capacity of a body of water to neutralize acerbity and basicity to stabilize its pH level. Alkaline water contains compounds that combine with H+ ions from the water, raising the pH level of the water and making it basic. It is the buffering capacity of water to do and so. Without these compounds, any acid poured into a lake would immediately lower its pH level.
Why is Alkalinity Of import?
Organisms that reside in bodies of water always benefit from a steady pH level in their optimal range. Higher alkalinity is preferred to maintain a constant pH in a torso of water. The high alkalinity of the body of h2o gives it the power to neutralize any acidic pollution from different sources such as rainfall or basic inputs from wastewater. In one case a lake is well buffered, its daily fluctuations of COtwo concentrations, as what has been previously discussed, consequence in merely very niggling effect on pH levels throughout the twenty-four hours.
What Affects Alkalinity?
The alkalinity of a ocean is affected by compounds found in rocks and soils, its salinity from plant activities, and the wastewater that may incorporate soap-based products that are disposed into the water. In an area that is majorly composed of Calcium carbonate (CaCOthree) or limestone, the bodies of water in at that place tend to take loftier alkalinity. In areas like Rhode Island, granite bedrock is abundant. It is deficient in alkaline materials to buffer acidic inputs. That'south why the water in these parts has lower pH levels. Correspondingly, homeowners the lime added as a soil subpoena to decrease the acidity in domicile lawns tin can runoff into the surface waters and increment alkalinity.
What are the H2o Quality Standards for Alkalinity?
6 categories take been developed by the U.S. E.P.A. to depict the alkalinity of lakes and ponds. The alkalinity increases proportionally with the concentration of CaCO3, while the risk of acidification decreases.
How is Alkalinity Measured?
With the unit of measurement of mg/L CaCO3 (milligrams of Calcium carbonate per liter of water), the alkalinity is measured equally the amount of acid (e.chiliad., Sulfuric acid) needed to bring a water sample to a pH level of 4.2. At this pH level, all the alkaline compounds of the sample are "used up." Using laboratory equipment, lab technicians dispense the Sulfuric acid drib by drib into the water sample. At the same time, the change in pH is closely monitored with a pH meter and electrode or pH "pocket pal." Field kits are also available, just they typically target a higher alkalinity range than in Rhode Island waterways.
What is the Alkalinity of RI Lakes and Ponds?
During its information gathering, URIWW monitors the alkalinity thrice annually. Just a few ponds are in the acidified category. This appears to be a natural condition for these lakes. The alkalinity of lakes is proportionally equal to the number of nutrients in them. Significant, a lower amount of nutrients also ways lower alkalinity, while a higher amount of nutrients means higher alkalinity. At large, most regions stay inside the same category of pH level yearly.
Alkaline Water: Newest Trends
1 of the newest trends today is the use of alkali metal water. It has now made its style to the overcrowded world of health and wellness. Some say that drinking element of group i water can offering various wellness benefits to people. Information technology helps slow down the aging process. It can regulate the pH level of the body and prevent different chronic diseases.
Alkaline metal water can neutralize the acrid levels in the trunk in which normal water cannot do. This process of neutralizing the acids can prevent different diseases. Indeed, this controversial wellness practise has been argued past diverse wellness experts.
Alkaline metal water refers to the h2o that has been ionized, which means that the water'due south pH level has been increased. Indeed, there are diverse ways to increase the alkaline metal backdrop of water using special filters, additives, and faucet attachments which can enhance the pH levels. This will make the normal tap water go from neutral pH to alkali metal.
Our torso secretes various juices that are acidic. Thus, alkali metal water volition neutralize this acrid that our torso volition release. It is recommended to consume seventy% alkaline and xxx% acidic foods, and one time you consume them, the pH level of the body will now exist neutral. Consuming alkaline h2o is best if you consume food that does not residual the body'due south pH level.
Does the Theory of Alkaline H2o Work?
In full general, regular water is best for people of all ages. There is no scientific bear witness that verifies the merits of the supporters of alkaline h2o. In a written report published in the Annals of Otology, Rhinology, and Laryngology, element of group i water with a pH level of 8.eight might exist able to soothe the acrid reflux. This is because the college pH level can kill the pepsin. This is an enzyme that is involved in breaking down nutrient proteins. Indeed, this is the chief cause of acid reflux.
Another study published by the Journal of the International Guild of Sports Nutrition stated a significant difference in the whole blood viscosity as you eat loftier pH water versus regular water afterward working out. A study was published in the Shanghai Journal of Preventive Medicine, which states that drinking alkaline water tin be beneficial for people who are suffering from cardiovascular diseases like high cholesterol, high blood pressure, and diabetes.
Benefits of Drinking Alkali metal Water
Indeed, there is still a lack of proven research about the wellness benefits of alkaline water. But various proponents claim that diverse benefits of drinking element of group i water:
- Alkaline metal water has ultra-hydrating properties versus normal water. This can be very helpful for people who piece of work out each day and need to drink lots of h2o to nourish their bodies. Science proves that the water molecules in alkaline h2o are smaller. Then, it tin be readily absorbed by the cells, which can rehydrate the torso quickly.
- Alkaline water tin can boost the body'south immune organisation. With this, information technology can help neutralize the acerbity of the body. This is sometimes caused by stress, environmental toxins, and poor nutrition.
- Alkaline water includes various minerals such as calcium and magnesium. Both are very important to maintain the healthy bones of the trunk.
- Alkaline metal water has diverse potent antioxidants that tin forestall the growth of cell-damaging free radicals in the body. This can rush the crumbling process of the trunk.
- Finally, alkaline metal water tin neutralize the acidity of the body. It can lower down the excessive acidic content in the gastrointestinal tract or the stomach.
The Side Effects of the Alkali metal Water
In full general, alkaline water is safe for consumption, but there are also negative side furnishings. Aye, it may exist alkalizing the torso. But there is a chance that with its excessive consumption, it can ruin the natural acids of your stomach, which can kill the good bacteria. Moreover, excessive alkalinity in your body can lead to problems in the skin and the gastrointestinal tract.
How to Brand Alkaline metal Water
Making Alkaline metal H2o with a Baking Soda
To make alkaline water, use baking soda, which is alkali metal and has a pH level of 9. For about four liters of clean drinking water, you have to mix a half tablespoon of baking soda. You lot have to shake the h2o until the baking soda completely dissolves. As presently as information technology is dissolved, yous tin now beverage the water.
Making Element of group i Water with Lemon
Lemon is acidic, and it has a pH level of below vii. When y'all add it to h2o, fully metabolized and consumed, it will have an alkalizing effect. Thus, it will raise the pH level in the body, which is above seven, and information technology is now alkaline metal. This is why it is recommended to potable a glass of water with lemon every morn to power up our day.
What is the Best pH Level for Drinking Water?
Tap Water
The common pH level of tap water, generally coming from groundwater systems, is 6-8.v. Environmental Protection Bureau or EPA consider tap water drinkable. Nevertheless, it tin can cause unlike problems. For instance, chlorine is not good for human consumption, but the human body can technically tolerate it. But, it would go carcinogenic (leads to cancer) and other health complications. Lead is some other take chances present in tap h2o in your home due to the lead nowadays in the pipes.
In the Washington, DC territory, the tap water originates from the Potomac or Patuxent Rivers. This water is candy with essential filtration methods like flocculation, which adds chemicals to the h2o to get particles to coagulate and coast to exist removed; sand filtration, which filters out large pieces of debris; or chlorination, which adds chlorine to eliminate bacteria and other microorganisms.
Filtered Water
Filtered water is common in many households and is function of their daily life. Most people filter their tap h2o from the dam, public source, or sometimes from a desalination plant. In this case, the water travels miles and miles of metal pipes to reach tap h2o in your home.
The pH level of filtered water tin can vary from acid to weak alkaline. The body needs to flush out toxins, and for that to be effective is to potable water with higher pH. A good pH level is viii.0. This is not too alkaline and not acidic. Higher than that may cause detoxing furnishings like nausea, light-headedness, and others. Short-term consumption tin can be okay if you are acidic. Otherwise, you lot can experience the mentioned above. For very high pH levels, i may besides increment their number of free radicals more than what your trunk needs and may risk your healthy cells.
Fluoride is added to your water supply. This is what helps prevent dental decay. Notwithstanding, it is also water contaminates. Well-nigh water filters practice not filter all contaminants out of the h2o. Furthermore, filters are the perfect breeding ground for microorganisms, including algae and mold. So it is actually necessary to change your water filter regularly. Otherwise, this could be worse than your tap water. If you lot have a poor water quality water supply, you will also end up with poor water quality.
Pure Water
When the water from a water source is removed from all impurities, it is called pure water or purified water. Pure water can be purified by micro-porous filtration, carbon filtration, and ultraviolet oxidation. Distilled water is the well-nigh common kind of pure h2o. Purification processes involve a combination of any of the processes in some places. Pure water can be used every bit drinking h2o, cooking, and in laboratories every bit in scientific studies.
Pure water is characterized by the quality and level of the impurities institute in the h2o. For water to become legally defined as "purified water," water impurities should be reduced to an extremely low level if not removed at all costs. The impurity level of dissolved solids in the purified water must not be in a higher place 10 parts per million. If the water meets this limit inherently has a higher purity than tap water, filtered water, or fifty-fifty spring water.
Drinking-H2o
According to EPA standards, drinking h2o must accept a half dozen.v-viii.5 pH value. They firmly indicated that even within the adequate pH range, a slight modify in the high or low-pH water could be unappealing for many reasons. High pH water may gustatory modality similar blistering soda, a slippery experience, and may leave deposits on fixtures. This is according to EPA on their website. However, depression-pH water may be biting or metallic in sense of taste which may also contribute to fixture corrosion.
pH levels of drinking h2o are monitored and checked by EPA, and the required level must be kept intact. Otherwise, if non advisedly regulated, the effects of drinking too much alkaline or acidic water can be dangerous. When the pH level reaches lower than 7.0, it can lead to the corrosive quality of the water. This means it contains zinc, atomic number 26, copper, and atomic number 82 from plumping and different metallic fixtures. Thus, there is a metallic or bitter taste in the water.
High alkaline metal water does not bring too serious wellness problems except that one may accept aesthetic problems. Thus, there is a gustatory modality of baking soda and a slippery feel. It also leaves scale formation or pipe precipitates on fixtures, dishes, and utensils.
Optimum Body pH
The typical definition when you refer to "optimum body pH" refers to the blood's pH. Dissimilar parts of the body have different optimal pH to function properly. For instance, the gastric juice in the stomach should have a pH betwixt 1.five-three.5 to be properly digested. The claret, on the other hand, should accept a 7.36 pH level.
What Happens If Your Trunk Isn't Balanced
Merely as the maxim goes, likewise much of something is bad. Beingness too acidic or as well alkaline tin can crusade problems for your health. If your nutrition is too acidic may let you proceeds weight, slower immune response, and susceptible to infections. Yet, if your diet is as well alkaline may let you slow down your metabolism, especially in absorbing key nutrients. Fortunately, our body strives to proceed the pH level at abiding residue. What contributes to our pH level is what we accept in, such as the liquids we drink and the foods we eat, even the emotions that nosotros experience.
The Health Effects of pH
It is named a secondary drinking water contaminant whose effect is viewed every bit artful. Be that every bit it may, the EPA suggests that open water systems maintain pH levels in the range of 6.5 and 8.5, a great guide for private well h2o owners. H2o with a low pH tin be acidic, normally fragile, and corrosive. Acidic water tin can filter metals from funnels and fixtures, for example, copper, pb, and zinc.
Information technology tin likewise harm metal pipes and crusade aesthetic problems, for case, a metallic or harsh taste, clothing recoloring, or blue-light-green stains in sinks and drains. Water with a low pH may contain metals like what is already mentioned copper, lead, and zinc. Drinking h2o with a pH level over 8.5 shows that an aberrant state of alkalinity minerals is bachelor. High alkalinity does not represent a health hazard only rather tin cause aesthetic bug, for example, a soluble alkali taste to the water that influences java to taste bitter; scale develop in pipes; and brought downwards the productivity of electric h2o warmers.
How to Exam the pH Value
Contact your state or local health officer for a rundown of ensured certified laboratories that can examination the pH level of your water. If your water is acidic (under 7 pH), you may have issues with the leaching of copper and lead from your pipes. Think nigh testing for copper and atomic number 82 if the pH test demonstrates your water is exceptionally acidic. If testing demonstrates that your h2o has a high pH, think about testing for alkalinity and hardness also, as these can be related to loftier pH water.
In any example, the primary method to care for the problems of low pH h2o is with the utilization of a neutralizer. The neutralizer encourages a solution into the water to keep the h2o from reacting with the house pipes or adding to electrolytic corrosion; a common neutralizing substance is soda ash. Neutralizing with soda ash builds the sodium substance of the h2o.
What are the Treatments for pH in Drinking Water?
2 home handling techniques to alter pH are acid neutralizing filters and chemical feed pump systems infusing a neutralizing solution. An acrid-neutralizing filter utilizes calcite or ground limestone (calcium carbonate) for normal pH correction. Yet, it could as well incorporate a mix of magnesium oxide and calcite if the pH is low. Since the h2o ingests these minerals through the aqueduct, the alkalinity and hardness will rise.
Hardness is effortlessly treated with a water softener that uses an ion exchange process to put off hard minerals. A chemical feed pump solution is made with well h2o and soda ash (similar to baking soda) and blended in a solution tank.
While choosing the pH treatment method, the levels of total dissolved solids (TDS) and carbon dioxide in the water should be considered. For case, acrid-neutralizing filters are not as viable in raising pH when the water contains farthermost TDS or carbon dioxide levels. Suppose the pH level of the well h2o is more noteworthy than viii.v. In that case, you can lessen the impacts of farthermost alkalinity by introducing either a special ion-exchange unit intended to diminish alkalinity, or a substance nourish pump framework that infuses a weak acid solution. This system is more circuitous. If high pH is an upshot, please contact your local water specialist for detailed advice.
Neutralizing Filters
A neutralizing filter is used in the water if it is acidic or has a depression pH level. This is a uncomplicated device that tin can heighten the pH level of the h2o by adding a neutralizing fabric.
These filters are point-of-entry devices that tin can raise the pH level of the water into a neutral level which can prevent corrosion or plumbing problems. Calcium carbonate tin be able to treat water with a pH that is greater than six. Meanwhile, constructed magnesium oxide will treat h2o that has a low pH level.
The untreated water volition flow through the filter. This is now filled with limestone of calcium carbonate or a synthetic magnesium oxide medium. This material will dissolve in the water, and it tin can raise the pH level.
Soda Ash or Sodium Hydroxide Injection
This ane is used whenever the h2o is acidic, or it has a depression pH level. Sodium carbonate or soda ash will heighten the pH of water near-neutral whenever it is injected into the h2o organization. Unlike neutralizing filters, this will non crusade hardness problems in the treated h2o.
Remember that the injection systems are indicate-of-entry systems. A corrosion-resistant chemic feed will pump or inject sodium hydroxide solution or soda ash solution into the water, which will enhance the pH level. The solution must be directly fed into the well, which volition protect the pump from corrosion.
If the h2o should be disinfected or neutralized, it is possible to accept dual treatment inside the injection system. Exercise this by adding a chlorine solution of sodium hypochlorite with the neutralizing chemical.
Acid Injection
The acid injection will care for the h2o with a high pH level past lowering the pH of the water to 7. This can eliminate the soda taste and now improve the effectiveness of chlorination. This tin can reduce the potential of pipe corrosion since water with a pH level above ix tin can corrode metals like zinc, copper, contumely, atomic number 26, and aluminum.
Other Effects on Humans
Exposure to farthermost pH values brings near irritation to the eyes, pare, and mucous membranes. Heart irritation and complication of skin disorder have been associated with pH values of more than than 11. Furthermore, solutions of pH ten– 12.5 have been deemed for to brand hair strands corking. Insensitive people, gastrointestinal irritation may likewise happen. Introduction to depression pH esteems can as well bring related effects. Less than pH 4, redness and irritation of the eyes have been reported, the seriousness of which increases with diminishing pH. Less than pH 2.5, harm to the epithelium is irreversible and intense. What's more than, since pH can influence the erosion of metals and disinfection efficiency, it might indirectly impact wellness.
Conclusions
Even though pH more often than not has no immediate effect on water consumers, it is an essential water-quality parameter. Conscientious attention regarding pH control is crucial at all stages of water handling to guarantee tasteful water clarification and disinfection. For effective cleansing with chlorine, the pH ought to ideally be under viii. The pH of the water entering the distribution organisation must be controlled to limit the erosion of water mains and pipes in household water systems.
The inability to do and then tin outcome in the contagion of drinking h2o and tin can have awful effects on its taste, odor, and appearance. The ideal pH volition vary in various sources as indicated past the limerick of the water and the nature of the construction materials used in the distribution arrangement. Still, it is frequently in the range of 6.five– ix.five. Higher pH values can consequence from accidental spills, treatment breakdowns, and unfixed cement mortar pipe linings.
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Do Water Filters Lower Ph,
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