At last we have the results!
Water test kits purchased from Amazon (UK) at approx £20 each incl post/pack.
It is an American product, made by Silver Lake Research Corporation, California, hence EPA references. Each kit came with all that was required for one test only
Test ...........................Tap water.........Well water...................EPA maximum contaminent level
Lead...........................Negative...........Negative.....................<
15 ppm
Pesticide (atrizine)..........Negative...........Negative.....................<
3 ppb
Pesticide (simazine).........Negative...........Negative.....................<
4 ppb
Copper........................Not included.......Negative....................<
1.3 ppm
Iron............................Not included.......Negative....................<
0.3 ppm
Total Nitrate/Nitrite..........5 ppm..............10 ppm......................<
10 ppm
Nitrite...........................0....................0............................<
1 ppm
pH..............................8.5..................8.5...........................6.5 to 8.5
Total Hardness................250 ppm ...........250 ppm.................. <
50 ppm
Total Chlorine.................Negative...........Negative....................<
4ppm
Bacteria........................Negative...........Positive.....................None
Comments on testing and results
1. In general the tests were fairly easy to conduct, however several of the results involved comparison with a colour chart. The nitrate and nitrate/nitrite test result was a bit difficult read but two of us, after some debate, agreed the result that has been recorded.
2. The water hardness of 250 ppm is much greater than the 50 ppm EPA guideline, and given the effect of tap water on our kettle, this was expected. London water supplied for the Lee Valley Reservoir(s) has a hardness of 275 ppm, which helps put it into perspective.
3. It is not surprising that Nitrates were found, as the presence of Nitrates has been highlighted in the Bulgarian local press, and in some areas reported to exceed the allowable. Possible sources of Nitrates are and all of these present around most Bulgarian villages.
a. Nitrogen based fertilizers.
b. Septic systems or leaking sewage lines.
c. Manure storage areas.
d. Fertilizer or manure applied to agricultural fields.
e. Compost piles.
4. The well water nitrate level is just on the allowable limit, but presence of bacteria is a possible problem
5. Only two types of pesticide tested for, which are the most common in the USA. Whether or not they are applicable in Bulgaria remains to be found out. Presumably there are other type of pesticide that could find their way into the watercourses and ultimately the ground water.
6. Slightly surprised about how alkaline the water is…could it be linked to the hardness?…will need to find out
7. Notwithstanding the results, our animals (hens, geese, sheep, donkey and goat) have been drinking water from the well for the past 18 months with no ill affect.
8. The well water test kit covered all elements the tap water kit had plus a test for copper and iron, so if the costs are the same suggest purchasing the well test kit and use for the tap water.
Conclusion
The tap water appears to be safe to drink, however the amount of Nitrates could vary in time and not always be below the 10 ppm requirement.
The well water would need to be boiled before drinking OR treated see
[You must be registered and logged in to see this link.] for some guidance, but the thought of chucking laundry bleach into the well does not appeal.
To obtain meaningful results, more tests would be required and at £20 per time we are unlikely to undertake many more!!! Will look round for a test that just checks for nitrates (and for the well bacteria)
NOTE : This is one test only taken in one place. These results will not apply anywhere else so do not rely on these for the quality of your water.