SMPK St.Stanislaus 2
Today we research Surabaya river by motor boat. Report of our research showed water quality Surabaya river is very dark and very dirty. We can look from water test. Look at the test table. From the table we can look Water quality of Surabaya river showed, Muara Kali Tengah having bad quality because it had a pH of 9, Nitrate 9 mg/ml, Phosphate 1mg/ml and Dissolved Oxygen 0. Different with result when we test the water in Cangkir Gresik. The result show water quality is good also we see macro invertebrate life in deep river under morning glory plants. Macro invertebrate like nimfa dobson, kepik pinggang, flies larva, water larva, needle capung. But when we arrive at Jasa Tirta Dam we cannot look fish jumping from under water, only dead fish. Maybe, because water pollution of waste from some factory.
JKPKA of SMAN 2 Jombang
We get more experience from this experiment.
We analyze that river which we observe is so dusty. We analyze in first area DO: 1 mg/LO2; phosphate: 1; nitrate: 10; PH: 7; and temperature: 29. In second area DO: 4,5 mg/LO2; Phosphate: 2; nitrate: 9,5; PH: 8; temperature 29. The third area DO: 0 mg/LO2; phosphate: 2; nitrate: 10; PH: 11; temperature: 29. The fourth area Do: 5 mg/LO2; phosphate: 2; nitrate: 9; PH: 10; temperature :28.
From this data we can now that animal and another life can life in area 2nd and area 4th. It can happen because the factory only stand on area 1st and 3rd. So in area 1st and 3rd the waste poison the life in this area.
After we see it, we planted we must protest the factory, and we explain that nature is important for us, so the factory care about nature especially in this river.
St.Stanislaus I Junior High School
From: St. Stanislaus I Junior High School
Date: Saturday, 21 May 2005 04:38:19
Subject: Final report from SMPK. St. Stanislaus
We start from Jasa Tirta at 08:30am.First we are going to Gunung Sari Bridge to measure the sample of Kali Surabaya. It's pH:7, Nitrate:10mg/L, DO:1ppm, phosphate:1ppm, temperature: 29 degrees C.
We went to PDAM Gunung Sari to take and know the water quality again, it's pH:8, Nitrate:10mg/L, DO: 4.5 ppm, Phosphate:2 ppm, Temperature 29 degrees C.
We went to Muara kali tengah the place is very disgusting, the water is black. we take the sample again, it's, pH:11, Nitrate:10mg/L, DO:0 ppm, Phosphate:1 ppm, Temperature: 29 degrees C.
We went to Cangkir and take the water quality again, this place looks clean and had many microorganism. It's pH:7, Nitrate: 9mg/L, DO:5 ppm, Phosphate:2 ppm, Temperature: 28 degrees C.
It's all about the water quality of Kali Surabaya.
and we end at 12.00am. we go to net place to send this message.
Ok see ya.
Northeast Vernon County Junior High
My raw data was as follows:
Schell Lake Atkinson Lake
Water Temp 15 C 16C
Dissolved Oxygen 6 4
PH 7.6 7.8
Nitrates 0 0
Phosphates 2 4
BOD 2 2
Turbidity 25 20
Coliform Bacteria Positive Positive
Macroinvertebrates Water Strider Water Strider
Both lakes were covered with birds too. I saw pelicans, sandhill cranes, coot, mallard, canadian geese and even found raccoon tracks.
I hypothesized that the water quality at Schell Lake, which is subject to seasonal flooding would be better than the water quality at Atkinson Lake which is only subject to periodic flooding (every 5 to ten years) and runoff from adjacent hills. Using the Pathfinder Water Quality Index, and measuring all indexes that we had testing supplies to test, I found that the water quality at Schell lake is superior to the water quality at Atkinson Lake. Surprisingly, the turbidity level at both lakes was the same. Using the Global Water Sampling Rubric I found: Biological Oxygen Demand, pH and Phosphate levels were rated Good at both lakes. The Nitrogen levels at both lakes were Excellent. Schell Lakes Dissolved Oxygen level tested as Fair. The Dissolved Oxygen level at Atkinson Lake tested as Poor. Both lakes tested Positive for Total Coliform Bacteria. Macroinvertebrates were nonexistent due to the time of year.
Despite their proximity in location and being fed by the same watershed, there are significant differences in the water quality of both lakes. Also, it appears as if the turbidity at Schell Lake is equaled at Atkinson Lake with a combination of flooding, runoff, and decay from rotting plants, possibly related to increased phosphorous levels causing the high turbidity in Atkinson Lake water.
Surprisingly, flooding, which causes turbidity, is generally seen as a negative factor for water quality as the dirt in the water blocks the aquatic plants sunlight needed for photosynthesis thus decreasing the DO level.. However, the DO level at Schell Lake remained in the high end of the Fair range despite the high turbidity and the higher temperature of the water. It is possible that the high winds help keep the water oxygenated
In this case, it appears that runoff may be more detrimental to water quality. The amount of phosphates in the water at Atkinson Lake may be accelerating plant growth and draining the oxygen levels when the plants decompose. This may explain the lover DO level at Atkinson Lake. The best solution may be a five year flood to refresh the lake and prevent eutrophication.
It would be interesting to monitor these lakes further, taking dissolved oxygen tests, not only in the morning and evening for comparison, but also in the hot summer months when oxygen is at a premium. In that way, it would be possible to determine which lake actually provides a more stable habitat for fish and plant life. Also, water quality testing of the Osage River and the creeks that feed both lakes would verify or disprove that the water in the superior Schell Lake is superior due to flooding dependent on the amount of similarity to the waters in the Osage River.
Finally, the difference I experience in fishing both lakes may not be entirely a result of water quality. As both lakes are stocked by the Missouri Department of Conservation, the flooding may be contributing to the superior fishing at Schell lake by more frequently stranding fish from the river, thus increasing the fish population. Although stocked fish could also swim to the river under flood conditions as well.
Finally, I have proven that Schell Lake does provide a better habitat for fish and aquatic animals than Atkinson Lake. I do believe that in this instance the water quality index points to the idea that at least in this ecosystem, flooding at Schell Lake is better for habitat than the runoff at Atkinson Lake.
Sekolah Ciputra. Indonesia
We tested the water sampling from Kupang Baru River. We chose that area because it was the nearest river in their area. They found that the pH was 8 the water was very dirty. The water contains 3 ppm of O2. The temperature was 32C so its a little bit hot. The phosphate is 1 ppm and the nitrate is 3 ppm so the water was very danger if someone consume it. Local communities there were throwing rubbish to the water. Sometimes, even they pee there. The local community should keep the river clean and they do not suppose to throw the rubbish onto the river.
We also did the test in other areas: Swan lake, Ciputra lake, and Surabaya River. The result are not difference, the water quality are worst. We need to educate people, and do local action to save the river.
SMADA JOE East Java Indonesia
|We get more experience from this experiment. We can learned how to love a nature.
We observe the river where take place on the Bareng, Jombang East Java. Why we take place on it, because on 1999 the villager who lives along the river angry to powder factory beside it. So we ask permission to them to observe the river. After we do this we get result DO: 2 mg/LO2; phosphate: 1; nitrate: 5; PH: 3; and temperature: 32.
From the observation have we done, we know that the river not healthy for the villager.
We suggest to factory that they must care about nature.
Woodland Hills Academy
|When we tested the river, we broke up into two groups, the chemistry group and the macroinvertebrate group. The chemistry group was in charge of testing nitrates, phosphates, temperature, dissolved oxygen, turbidity, and pH.
We found that the area around Lester River had an average air temperature of 5 degrees Celsius on the day that we went. The average water temperature was 8.67 degrees Celsius. This cooler temperature indicates that the DO level should be relatively high and the BOD Level should be low. This is an early indication of a healthy river. The DO level level was 10.0 ppm, which, as predicted, is an excellent level. This level should indicate a larger and healthier population of macroinvertebrates. The turbidity of the river was measured using a Secchi Disk and the reading from it was .863 centimeters, which indicates a moderately high level of suspended particles. Our phosphate reading was 5.0 ppm and our nitrate reading was 3.0 ppm. These levels indicate some detergent in the water, but little sewage. The pH level of our water was 7.0, which is neutral.
Our macroinvertebrate group was responsible for collecting and analyzing macroinvertebrates. We found the following:
23 Stonefly Larvae
5 watersnype Fly Larvae
1 Dobson Fly Larvae
4 Alder Fly Larvae
These species are all considered sensitive and only live in water with low pollution.
We also found:
2 Caddis Fly Larvae
4 Cranefly Larvae
1 Dragonfly Larvae
These are considered semi-sensitive macros and can live in a lake or river with moderate pollution.
Finally, we found:
3 Tubifex Worms.
These are all tolerant or semi-tolerant species.
The Macros we found indicate a healthy ecosystem.
The tests we took indicate an overall healthy ecosystem
Omnia class - Romania
|The educational partnership between Omnia high school and Students Club from Constantza, Romania, had as one of its objectives, the achievement of a project relating to the analysis of the quality of surface water from the Danube-Black Sea Channel from Agigea, Constantza district.
The four students from XIth grade involved in this project are as follows: Mihai Solom, the leader of the group, Gabriel-Laurentiu Cornateanu, Adrian Usurelu and Valentin Anastase. They were guided by the who chemistry teachers: Gina Tone from Omnia high school and Viorica Cociasu from Students Club.
The students say that while they worked on this project, they became more familiar with the documentation work and scientific research with reference to water qualities. It was very interesting, as well, to apply their knowledge, acquired by now in their chemistry classes, to this project. During this project we had to make field research for taking some tests as well as team work between us and our teachers.
During the achievement of this project we consulted and contacted several experts in water qualities who are permanently watching the water from Agigea-Constanta area.
The results that we had obtained at the end of this project were interpreted by consulting the most recent norms relating to the classification of surface water and physics and chemistrys determination of those mentioned before.
By working on this project we came to realize that the evaluation of the water qualities must be approached from a chemically, biologically and microbiologically point of view, respecting the UE level in the domain of protecting the quality of water.
We reached the conclusion that the water that we studied is framed in normal parameters.
For the future, we wish to involve more students in this project and that more schools from Constantza or Romania to become our partners. As a first step in achieving this desire we want, that during June, to present the conclusion of this project to some meetings, debates, activities with the students and teachers from our school and from other schools in Constantza. We want to achieve this, through television and mass-media. As well we want to thank you for your amiability and we wish to collaborate with you in the future, if possible.
2SB Liceo Scientifico Paolo Giovio
Here enclosed our Final Report, we tried to send it as an attachment but it was rejected. Taking part in this project was great fun and we hope to joining it next year. Our school year is going to be over in two weeks time so we wish you a wonderful summer vacation.
2SB Liceo Giovio
From: 2 SB, Liceo Paolo Giovio, Como (Italy)
Date: 24th May 2005
The aim of this report is to draw conclusions on the quality of the water in the first basin of the lake of Como (Italy) with concern to its physical characteristics and chemical substances.
The class was divided into 6 groups so that each group performed one of the requested analysis.
What was something new that you learned?
We learned how to carry out the sampling analysis and the proper way to use and handle instruments, As result of the analysis we could find out the physical and chemical characteristics of the water.
A group also learned how to convert Nitrate (NO 3 ) into Nitrate Nitrogen (NO 3 - N).
The project has offered the opportunity to apply what we learned on books. We also got an in-depth insight into environmental matters in general because the GWSP has been part of a class cross-curricular project that involved other subjects like international environmental legislation, anthropology, history and ethics.
The GWSP has also been useful to integrate contents and English language use, in fact we learned how to write an introduction letter, a report and several specific words in English. At the end we can say that not only we studied several aspects of the ecosystem of the lake of Como but we also acquired a refreshed awareness of our environment.
Because we had decided to sample the town waterfront area, we started from the hypothesis that we would find a quite polluted situation. The table below shows ,instead, that the lake is in better condition
Location : first basin Parameters Data
Latitude : 4549Longitude : 904 Water Temperature : 14C
Date : 11/05/05 pH 7.9
Time : 11.30 a.m. Phosphates 0.1 mg/l
Weather : slightly cloudy /changeable/breeze NO3- 6.5 mg/l
Temperature : 18 - slightly inferior to seasonal average Dissolved Oxygen 8.7 mg/l
Condition of the lake : slightly rough CO2 5 mg/l
Colour : between blue and dark green (in proximity of the shore Turbidity 4.5 (Secchi disc) 36 (JTU)
Odour : typical smell of organic decomposition and musk Carbon Dioxide 5.0
Appearance of water : quite clear. Some floating wastes like pieces of wood and also of plastic
Probably ten years ago the lake was much more polluted, that was before the setting up of purifying plants
We all agree that we would like to go on this project next year, possibly having more monitoring in different locations, moments and seasons to check the effect of climatic changes or of other factors.
Onteora High School
|In comparing our water to water from other sources, we found that our value for pH was comparable to that of most other schools. Our value for dissolved oxygen (8) was better than some locations, probably due to the cold temperature of the water. Our readings for phosphate and nitrate (0) support our hypothesis that our water has fewer contaminants than the majority of water sources. The one test that we had an unusually high reading for was turbidity. That test result was due to a recent flood on the Esopus Creek with water levels at a 50 year high. The water is still much more turbid than usual, more than a month after the flood. We think that the flood and high level of turbidity may also have resulted in a lower than normal level of dissolved oxygen in the stream.
In doing this project we learned about the different tests and what they mean, we learned the names of and appearance of many different macroinvertebrates that live in the stream and we learned the locations of other schools taking part in the project.
Cranford High School
Final Report from Cranford High School
There was generally a decrease in the readings. Although, there were also several breaks of data due to some miscalculations. Our readings may be because the temperature increased. The higher the temperatures are, the less carbon dioxide there is present in the water. Then, the plants have less carbon dioxide to work with. Therefore, they produce less oxygen during photosynthesis because carbon dioxide is required for photosynthesis.
Similar to the dissolved oxygen, there was a decrease in the phosphate readings. These observations may be due to the fact that less waste was being dumped into the river. By less waste, we mean less fertilizer. Fertilizer is primarily used in the beginning months of spring and generally not used as much around May. However, these data contradicts the nitrates reading.
Opposite to the previous two, nitrate readings generally went up. This may be because along with normal waste, fertilizers from lawns were washed into the river by rainy weather and the use of lawn hoses. Phosphates and nitrates possibly contradict each other due to human error during testing or due to different sources besides fertilizers.
Our alkalinity readings were typically good and showed an increase over time. The good readings have helped us analyze our pH data. The levels of alkalinity helped to keep the pH levels neutral.
Our turbidity is a bit higher than normal. Our readings reflected the appearance of the section of the river we tested. Our turbidity levels affected the decrease in our dissolved oxygen level we have observed because it could have decreased photosynthesis in phytoplankton.
Our temperature readings went up throughout the year because it generally got hotter throughout the seasons.
Our pH was considered excellent and in the range of 7-7.5. The pH levels have been affected by the alkalinity readings.
We would consider the Rahway River to be in very good conditions. We generally had readings of excellent and very good. Turbidity was the only reading that was a bit higher than normal. We only tested one section of the river, so it is not a true representation of the river as a whole.
By: Laura Roberts, Maxwell Dubin, & Amanda Merwede