Evaluation of Aydughmush Dam Reservoir Water Quality by National Sanitation Foundation Water Quality Index (NSF-WQI) and Water Quality Parameter Changes

Background and Objectives: Aydughmush dam was built on Aydughmush River at !"km in southwest of Mianeh City. The dam is multipurpose and its main aims are the spring floods control, supplying potable water for villages and providing irrigation water. Different pollutants which probably discharge to the river finally enter to the dam reservoir so; this study focuses on evaluating the quality of the dam reservoir. Materials and Methods: In this cross sectional study standard field parameters including dissolved oxygen, temperature, Biochemical and chemical oxygen Demand, Most Probable Number of Coliforms, Fecal Coliform, Turbidity, Total Dissolved Solids, Total Solids, pH, conductivity and others were measured at eight different stations during the spring and summer in 2010. Sampling points were selected on the basis of their importance.Water quality index was calculated using water quality index calculator given by National Sanitation Foundation (NSF) information system. Results: The highest value of WQI of the samples was 84.89 in A3 station in July while the lowest value was 67.96 in A2 station in May. The lower value of WQI has been found mainly due to the slightly lower value of DO in the dam reservoir water. Most of the water samples were found within Good category of National Sanitation Foundation Water Quality Index (NSF-WQI). Comparison of the measured parameters based on the sampling stations and various months by variance and t-student analysis showed a significant relationship for some parameters(P<0.05). Nutrient budget determination indicates that the concentration of phosphate, nitrite, nitrate and ammonia at inlet are higher than outlet of the dam reservoir. Conclusion: The calculated (WQI) showed good water quality. Based on the results of NSFQWI calculations, the dam reservoir water quality is suitable for various purposes Keywords:Water Quality Index, NSFWQI, Dam Reservoir, Water Quality Iran. J. Health & Environ., 2012, Vol. 4, No. 4 *Corresponding Author: edris-2009@live.com Tel:+98 811 83 800, Fax: D ow nl oa de d fr om h ttp :// jo ur na ls .tu m s. ac .ir / on M on da y, J ul y 09 , 2 01 2 !"#$%& '()&*&+,-.(/0&1234,&#&5,67&+(8,& 9:;<:&234,&5=:>?@& '()&A'8B: !"# $% !&' ($)*+ ,-&'# .$/012 ,34$56 74$89 ,34$56 74:; '#<#"<-& =>?$@4; '#<#A<&# =BC@DE C>3DE $F 74GHI1 JI6 JK L@M N>KM 7J9 O/P$K OQ$R1 .$/KC59 SFCT UGIV WC/1GXRY-' 4; BG8TJ@Z OQ$P;:4 W:4CF BG8TJ@Z JK FG>"&#&+,>H, N>KM 7J9 [MJ\M O]^I1 W24:$_Y S`M4M W4$RFZ : JK O1G\ W$a$/K:4 WMCF UC9 UZ LR1$% ¡W4$5F W$a UbRK cC/IY .G6 W;Jd/1 eMJaM eJa $F Odf$^1 L@M L@MCF$IF JQG9 S1 ;4M: JK >_E O6$@4; OF >@$5Q 4; JQG9 S1 ORXg% ¡JK OF W;:4: OQ$P;:4 OF h$8/\M OY S*X/g1 W$a 7JI@hZ N>KM 7J9 3$iQM JK >_E O6$@4; UZ >R*RY SK4CF : S@$R8R9GRF 2$RQ ;4G1 .jR0YM ¡UZ W$1; ¡cGX)1 .jR0YM k1$9 ¡SQMJR1 ($df$^1 l$P S*RY W$aC/1M4$E ¡Sd^]1 Odf$^1 L@M 4; F 7I;@&J#I W$aC/1M4$E Cm@; : UZ 7j@: >@MJa ¡pH ¡(MJ1$V kY ¡cGX)1 (MJ1$V kY ¡(4:JY ¡SnG?J1 W$a 3C*RXY ¡3C*RXY ;MJd% L@C% k8/)1 ¡S@$R8R9 oP$9 NJQJ9 U$g/QM >R8aM p$KMCF W4M;CF OQG8Q W$a 7$m/0@M NJQJ9 WCRq 72MJQM -&r' .$/0F$% : 4$5F cGs? St uX/g1 7$m/0@M r 4; S*RY NJ@;Cq OvK$)1 wNSFx>9MJ5F SX1 ;$RIF oP$9 OvK$)1 y/0RK 2M 7;$*/KM $F UZ >R*RY NJ1Z >K; OF 7$1 >_5v@;4M 4; A27$m/0@M WMCF 4MJ]1 L@C/8Y : 7$1CR% 4; A3 7$m/0@M WMCF r!R*RY oP$9 L@C/_RF =-"& +K0-< C/_RF ¡NSFWQI oP$9 WJIF O]vt p$KMCF N>KM 7;GF JK >_E O6$@4; UZ 4; cGX)1 .jR0YM 4MJ]1 >?M kRf; OF oP$9 4MJ]1 za$Y 7;$*/KM $F W4M;CF OQG8Q W$a 7$m/0@M : 7$1 p$KMCF 7J9 WCRq 72MJQM S*RY W$aC/1M4$E O0@$]1 NJQ;GF UGP >R*RY WM4M; 7J9 WCRq 72MJQM W$a OQG8Q Ja; S1 .$_Q WD{1 ;MG1 .bRF OvK$)1 wP|#<#"x ;M; .$_Q W4M; SId1 }$v%4M $aC/1M4$E SPCF WMCF ¡t-student : ~Q$@4M: Rf$QZ W$a .G12Z 2M N>KM JK SV:CP 2M C/_RF W;:4: 4; €$RQG1Z : ($*0? ¡>@C/RQ ¡(MC/RQ >HXT BG8TJ@Z JK >_E O6$@4; UZ >R*RY ¡NSFWQIoP$9 @$/Q p$KM CF N>KM UGP UZ >R*RY ;M; .$_Q 7J9 OvK$)1 oP$9&F*;3L&& +83KB NJ9$F S1 ‚K$I1 uX/g1 W$a 7;$*/KM WMCF MN&53O3P&¡>7&5!%&+E-3(T&9-LU:# &RS-=&V:&CQ-OK7:&-@&JW'X>7&+E-?,&¡ <-.=#I&ccc:&dI>e&¡CQ:V&& A3^_&g9MJ5F 7:Cq ¡.MJ8a S„9E 3GXn 7$m_QM; >9MJ5F 7J„_QM; ¡3;C1 …4$E W:4 OF :4 ¡7JR85? JR59 4MGXF ¡za:jE 7M44$56 ¡.MJ8a =cG†01 7JI0@GQ