S.D. Admin. R. 74:21:02:61

Current through Register Vol. 51, page 67, December 16, 2024

Section 74:21:02:61 - Point system classification of water treatment plants

For the purpose of classification of water treatment plants, the plants shall be awarded points based on the following criteria; however, the combined total of subdivisions (1) and (2) may not exceed 20 points:

(1) One point per 10,000 or part thereof of the population served on a peak day;

(2) One point per 1,000,000 gallons per day (mgd) or part thereof for the designed average daily flow or peak month's flow for the average day, whichever is larger;

(3) Three points where the water supply source is from the groundwater;

(4) Five points where the water supply source is from surface water or groundwater under the direct influence of surface water;

(5) One point if the raw water supply source equals or exceeds one coliform organism per 100 milliliters;

(6) One point if the raw water supply source equals or exceeds 5,000 coliform organisms per 100 milliliters;

(7) One point if the raw water supply source equals or exceeds 500 organisms per one milliliter;

(8) One point if the raw water supply source equals or exceeds a nitrate concentration of 10 milligrams per liter as nitrogen;

(9) One point if the raw water supply source equals or exceeds one turbidity unit;

(10) One point if the raw water supply source equals or exceeds a fluoride concentration of 2.4 milligrams per liter;

(11) One point if the raw water supply source equals or exceeds an organic chemical concentration of 0.7 milligrams per liter;

(12) One point if the raw water supply source equals or exceeds a sulfate concentration of 250 milligrams per liter;

(13) One point if the raw water supply source equals or exceeds an iron concentration of 0.3 milligrams per liter;

(14) One point if the raw water supply source equals or exceeds a manganese concentration of 0.05 milligrams per liter;

(15) Two points where aeration of the water is used in the plant;

(16) Four points where a pH adjustment of the water is made in the plant;

(17) Four points where adjustment of the water is made in the plant for stability or corrosion control;

(18) Eight points where adjustment of the water is made in the plant for taste and odor control;

(19) Four points where adjustment of the water is made in the plant for color control;

(20) Ten points where equipment is provided for removal of either iron or manganese, or both, from the water;

(21) Ten points where equipment is provided for softening of the water by ion exchange;

(22) Twenty points where equipment is provided for softening of the water by chemical precipitation;

(23) Fifteen points where equipment is provided for treatment of the water by coagulation, flocculation, and sedimentation;

(24) Ten points where equipment is provided for treatment of the water by filtration other than bag filtration or membrane filtration;

(25) Fifteen points where equipment is provided for treatment of the water by reverse osmosis, nanofiltration, or electrodialysis;

(26) Six points where equipment is provided for in-plant treatment of the sludge;

(27) Fifteen points where equipment for demineralization as advanced water treatment is provided;

(28) Five points where equipment is provided for fluoridation of the water;

(29) Five points for each type of equipment that is provided for disinfection of the water;

(30) Five points where equipment is provided for on-site generation of the disinfectant;

(31) Three points where equipment is provided for bag filtration;

(32) Fifteen points where equipment is provided for ultrafiltration or microfiltration;

(33) Five points where equipment is provided for the in-line addition of a coagulant or filter aid; and

(34) For the purpose of determining the laboratory control performed by plant personnel, the plants shall be awarded points if the tests of the water are conducted in accordance with Standard Methods for the Examination of Water and Wastewater, based on the following criteria:

(a) Three points for the determination of total and fecal coliforms by a multiple tube or membrane filter method;

(b) Two points for the determination of total and fecal coliforms by a presence/absence method;

(c) Three points for the determination of total bacterial heterotrophic plate count;

(d) Three points for the determination of biological organisms;

(e) One point for analysis of any pH by an electronic probe method or chlorine residual, iron, manganese, chloride, nitrate, sulfate, pH, phosphate, or fluoride by a colorimetric method;

(f) Two points for the analysis of alkalinity or chlorides by titration;

(g) One point for the analysis for turbidity by the use of a bench model turbidimeter;

(h) Two points for the analysis of any total dissolved solids or suspended solids by a gravimetric method;

(i) Five points for analysis of organic chemicals by gas or liquid chromatography;

(j) Five points for the analysis of inorganic chemicals by atomic absorption or inductively coupled plasma methods; and

(k) Five points for the determination for radioactivity.

S.D. Admin. R. 74:21:02:61

6 SDR 49, effective 11/19/1979; 13 SDR 129, 13 SDR 141, effective 7/1/1987; 27 SDR 53, effective 12/4/2000.

General Authority: SDCL 34A-3-24.

Law Implemented: SDCL 34A-3-2.

Standard Methods for the Examination of Water and Wastewater, 19th edition, 1995, Library of Congress card number 95-79480, ISBN number 0-87553-223 -3, prepared and published jointly by the American Public Health Association, the American Water Works Association, and the Water Environment Federation. The publication office is American Public Health Association, 1015 Fifteenth Street N.W., Washington, D.C. 20005. Copies may be obtained from American Public Health Association, 1015 Fifteenth Street N.W., Washington, D.C. 20005. The cost is $200.