My Water Supply:
The water treatment facility which provides water to my residence is the Alderwood Water & Wastewater District. This water district purchase water from the City of Everett, Washington. The water itself originates from the Spada Reservoir, which is fed by the Sultan River, coming from the Northern Cascade mountain range. The Spada Reservoir is manmade, was created in 1964, and contains about 50 billion gallons of water. This water allows the Alderwood Water & Wastewater District to supply 175,800 residents within the local area with a clean water supply.
The Alderwood Water & Wastewater District compiles an annual CCR for the residents it serves. This is exceptional, given that they are not mandated by any law to provide this information. Therefore, I commend this water district for taking responsibility, and providing its consumers with this annual CCR.
According to their CCR, the Alderwood Water & Wastewater District's water supply contains no perchlorate, no cryptosporidium and the levels of treatment polymers found within their water were at levels well below the maximum allowed by the EPA. Perchlorate is used in the disinfection process, and has been found to disrupt the Thyroid gland in humans. By disrupting the Thyroid gland, perchlorate can cause developmental and physical damage. Cryptosporidium is an intestinal parasite that is found in all of Washington's rivers, streams, and lakes. Cryptosporidium can cause flu-like symptoms, and is resistant to chlorine. Lastly, treatment polymers are used as an additive to improve coagulation and filtration of water particulates. These polymers can be harmful at high levels, and the EPA sets limits the levels of treatment polymers found within public water systems.
Other chemicals that have been found, or are monitored for, within the Alderwood Water and Wastewater District's water supply include Nitrates, Coliform Bacteria, Fluoride, Residual Disinfectant, Haloacetic Acids, and Trihalomethanes.
- Nitrates average level= 0.046ppm EPA Max =10ppm
- Coliform Bacteria average levels= 0%/150 samples a month EPA Max= 5%/month of total samples
- Fluoride= 0.8ppm ( a reduction from 1.0ppm, 0.8 is the lowest allowable for fluoride by the EPA) EPA Max=4ppm
- Residual Disinfectant= 0.6ppm EPA Max=4.0ppm
- Haloacetic Acids (by-product of chlorination process used to kill disease causing microbes) = 33.2ppb EPA Max= 60ppb
- Trihalomethane (by-product of chlorination process used to kill disease causing microbes) = 57.5ppb EPA Max= 80ppb
Disinfection by-products average measured:
- Bromodichloto-methane=2.3ppb (ideal lvl=0)
- Chloroform=47.3ppb (ideal lvl=300)
- Dichloroacetic Acid=9.4ppb (ideal lvl=0)
- Trichloroacetic Acid=20.9 ppb (ideal lvl=300)
- Monochloroacetic Acid= No data (ideal lvl=0)
- Dibrimoacetic Acid=No data (ideal lvl=0)
Lead and Copper Results:
- Lead=0ppb EPA Regulations=0, action required at 15
- Copper=0ppb EPA Regulations=1.3, action required at 1.3
Turbidity is also reported. Turbidity is a measure of the amount of particulates in the water supply. This can include a wide-range of bacterias,viruses and protozoans that cause disease. This is a required process by the EPA, and the levels for the Alderwood Water & Wastewater District were 0.06 NTU (Nephelometric Turbidity Units). EPA Limit for total Tubidity= 0.3 NTU
From the results, which all come from 2015, the level of toxins within my water supply appear to meet or exceed the EPA standards. However, of the toxins which are at higher levels than ideal, by-products of the disinfection process are higher than the standards set. Considering that these by-prodcuts include chemicals such as Chloroform, I was surprised to see that I consume some pretty dangerous chemicals, though they are at relatively low-levels.
I was surprised to see that Chloroform was in the water supply. This is a dangerous chemical, which at high doses can cause toxic hepatitis and induce liver and kidney failure. Also, I was surprised to see that Bromodichloto-methane was present in the water. As this is a banned substance, due to its negative affects on the ozone layer, I assume that this is naturally occurring in the cleansing process of the water supply. At high levels of inhalation, Bromodichloto-methane can cause illness.
The Source of the Water Supply:
As stated earlier, the water supply that feeds into my residence is supplied by the Alderwood Water & Wastewater District. This entity purchases its water from the City of Everett. The city of Everett has a water treatment facility at its reservoir, Spada lake. This is a manmade reservoir which is fed by the Sultan River. The Sultan River originates in the Northern Cascade Mountains, where several springs and melt water combine themselves to form the Sultan River.
Therefore, if I was a drop of meltwater on the Cascade mountain range, I would end up flowing into the Sultan River, which would supply the Spade Reservoir. From here, I would be pumped into the City of Everett's water treatment facility, before being pumped to the city of Everett itself. From here, if I were purchased by the Alderwood Water & Wastewater district, I would be pumped to their treatment facility, undergo further treatment and testing, and eventually by pumped to my residence.
Overall, according to the Alderwood Water & Wastewater District CCR report, I consume relatively good-quality water. However, I have to assume that the water district is being honest in their reporting. I cannot help but be suspicious that all chemicals tested are conveniently well-below the EPA maximum levels. Nonetheless, I feel privileged that I consume probably much healthier water than most of the population of the earth.
I do not use a filter, but I have used one in the past. I believe that this is a prudent measure, which if used properly, can help reduce your risk for toxic exposure. The main motivator for me to use a water filter, is my concern for my wife, and any future children we may have. I would not want my family to be needlessly harmed by the water supply, if a water filter may have helped prevent such exposure.
I do not often drink from bottled water, and instead drink from my apartment's tap. Also, I drink water from my office's filtered water dispenser. However, this class has reinforced for me the need to avoid drinking water from plastic sources, unless those sources are BPA free. Also, there is really no difference between bottled water and tap water. Essentially, all eater comes from the same source. Therefore, purchasing bottled water is somewhat of a waste, put you at risk for BPA exposure, and creates waste which negatively Impacts the environment. Overall, I believe an investment in a good-quality water filter is a worthwhile investment.