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Discharged mass loading of Total Nitrogen from Waianae Wastewater Treatment Plant from 2018-2023 showed a trend with the last two readings in the 200 - 800 lbs/day range.
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Discharged mass loading of Phosphorus showed an increasing trend from 2018-2023 ending at ~125 lbs/day.
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Turbidity of the effluent at Waianae Wastewater Treatment Plant from 2018-2023 shows a downward trend ending in ~4 NTU.
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Wai'anae Wastewater Treatment Plant Water Quality History
Date Turbidity (NTU) Total Nitrogen (lbs/day) Monthly Single Sample Maximum
Total Nitrogen (ug/L) Monthly Single Sample Maximum Total Phosphorus (lbs/day) Monthly Single Sample Maximum
Total Phosphorus (ug/L) Monthly Single Sample Maximum
Sep-18 6.3 637 21420 99 3330 Oct-18 5.9 376 12200 102 3310 Nov-18 5.6 653 22380 107 3680 Dec-08 6.4 464 18182 93 3721 Jan-19 6 607 24480 98 3970 Feb-19 6.2 566 20440 113 4070 Mar-19 6.9 772 28930 105 3940 Apr-19 11.1 461 16550 105 3780 May-19 5.4 678 23700 111 3870 Jun-19 5.5 493 17950 107 3880 Jul-19 3.5 707 23820 105 3530 Aug-19 4.9 498 16600 112 3730 Sep-19 5.1 378 13500 33 1170 Oct-19 4 440 15100 101 3470 Nov-19 14.6 827 26550 116 3730 Dec-19 7.2 598 20850 114 3990 Jan-20 6.8 544 19400 102 3640 Feb-20 5.83 536 18990 105 3720 Mar-20 3.05 556 19500 122 4580 Apr-20 3.99 559 20250 108 3930 May-20 3.8 503 18600 108 3990 Jun-20 5.58 482 16950 104 3650 Jul-20 4.26 505 17600 111 3865 Aug-20 5.02 621 20900 111 3740 Oct-20 4.44 480 14600 106 3230 Nov-20 2.74 481 16500 102 3500 Jan-21 4.52 230 8175 110 3910 Feb-21 5.07 455 14890 115 3760 Mar-21 3.26 490 16000 115 3750 Apr-21 3.55 280 10,180 94 3435 May-21 5.57 188 6450 109 3730 Jun-21 4.16 523 17200 115 3800 Jul-21 4.36 550 18100 117 3840 Aug-21 5.86 343 10600 117 3600 Sep-21 4.01 260 8360 115 3700 Oct-21 5.58 276 8990 108 3530 Nov-21 4.67 773 25000 111 3590 Dec-21 3.73 381 12140 102 3240 Jan-22 4.14 944 18370 134 2610 Feb-22 4.62 639 19700 123 3780 Mar-22 3.94 620 21240 107 3650 Apr-22 5.37 722 23500 119 3870 May-22 5.32 553 16660 132 3990 Jun-22 6.22 490 15760 114 3660 Jul-22 5.4 738 22470 127 3850 Aug-22 5.01 362 11520 116 3680 Sep-22 4.95 649 20690 112 3570 Oct-22 5.18 658 19480 117 3460 Nov-22 3.4 145 4610 110 3500 Dec-22 4.21 154 4970 166 5360 Jan-23 4.78 557 17500 116 3630 Feb-23 5.51 703 22360 122 3890 Mar-23 4.8 755 24700 114 3740 Apr-23 4.18 237 7730 125 4070