pollution be from animal sources it is not such a serious matter with the citizens of Newark, but if that intestinal pollution come from human discharges. it is a serious matter. Again attention should be called to the fact that after such a prolonged dry period there will be a very great pollution of the stream with the surface washings following heavy rain. With typhoid fever present at Utica, such a short distance above Newark on this stream, the danger to the latter city without filtration of the water is apparent, and that danger will be greatly increased with the addition of surface washings from Utica.

While the pollution of the Newark water at the time of sampling was small, so small as perhaps to show no effect that is noticeable in the health of the citizens, yet there is some danger and the filters should be put in operation as a safe-guard.

WATER SUPPLY OF OBERLIN.

See Report on an Investigation of the Efficiency of Filtration in Public Water Suppplies.

WATER SUPPLY OF PAINESVILLE.

See Report on Periodical Examinations of Certain Public Water Supplies.

The supply is from a drilled well. See Report for 1899, page 704. Samples were requested for analysis in order to ascertain the quality of the public supply.

Sample No. 3.762 was taken from the water works well and No. 3,763 from a hydrant in the business district.

The analyses show a ground water of good quality, free from iron or organic pollution. While this water contains some factors to make it hard, yet it is softer than many of the public supplies of the state, and, moreover, it does not contain the materials that form the hard scale in boilers so objectionable where a water is used for steam purposes. This water should be quite satisfactory for a public supply, and doubtless is very pleasing to the consumers.

WATER SUPPLY OF POMEROY.

See Report on an Investigation of the Efficiency of Filtration in Public Water Supplies.

Iron.

Total.

Loss on igni

tion.

Residue on

Bacteria.

evaporation.

No. per cc.

Nitrates.

Odor.

WATER SUPPLY OF PERRYSVILLE.

PARTS PER MILLION.

Albuminoid
ammonia.

Free ammonia.

Nitrites.

Nitrates.

Nitrogen as

The supply is derived from Lake Erie, the intake crib being in the harbor near the mouth of Portage River. See Report for 1898, page 554. Samples were taken for examination in order to ascertain whether the public supply was being polluted from Portage River. No. 4,094 was taken at the intake crib. No. 4,095 was taken at the mouth of Portage River. As regards organic pollution the waters are practically the same, both showing some pollution from sewage sources. However, the inorganic properties of these samples are very helpful. The sample from the mouth of the river is much higher in its mineral properties than is the normal Lake Erie water. This is most noticeable in the findings for chlorides, and it will be seen that while the water at the intake has been lowered in chlorides by dilution with lake water, yet it (water at the crib) is still more than eight times as high as the lake water.

The results show that at the time of sampling the water at the intake crib was receiving pollution from the river.

These waters are derived from Lake Erie. Samples were taken for analysis in order to ascertain the quality. (For analyses of various wells. on this island see Miscellaneous Waters and Private Supplies elsewhere in this volume.)

No. 3,841. Water from Lake Erie through Gascoyne's intake. This is a joint supply for three or four places. The results show a modified Lake Erie water, giving some evidence of pollution by organic matter, although at the time of sampling the currents were favorable to a lessened pollution from the sewers emptying near by. The number of bacteria is not as high as it should be for this sample owing to overspreading growths interfering with the counts. The presence of intestinal bacteria in I cc. portions of the water shows it is not free from intestinal pollution, and therefore can not be considered a safe water at all times.

Odor.

PARTS PER MILLION.

Albuminoid
ammonia.

Free ammonia.

Nitrites.

Nitrates.

Nitrogen as

No. 3,842. Lake Erie off Ruhe's Point. This is one of the suggested points for another intake. The analysis shows an absence of intestinal bacteria in 50 cc. portions, but the chlorides are higher than in other parts of the lake. The sample was taken not far from a bathing beach that was well patronized during the run of hot weather at the time of sampling. It is claimed by some of the old residents that there is a crevasse back of the hotels and other buildings on the main street and that this drains to the lake in the direction of the location where this sample had been taken. The water is a usable one as shown by the analysis, although not wholly desirable.

No 3,843. Beebe House hydrant. This water is obtained from the lake through the Beebe House intake. The pump was not in operation at the time, and the sample represents the water that had been pumped the day before and stored in the reservoir. Intestinal bacteria were present showing intestinal pollution, but the balance of the analysis would indicate that the pumping had been done under conditions favorable to the obtaining of a water less polluted than must often be the case. On account of the presence of intestinal bacteria, indicative of intestinal pollution, the water cannot be looked upon as a water desirable for hotel use.