Chapter 8 – Mpumalanga Province
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CHAPTER 8 – MPUMALANGA PROVINCE Provincial Green Drop Score 56% Provincial Best Performer Mbombela Local Municipality is the best performing municipality in Mpumalanga Province: 86.3% Municipal Green Drop Score 57% improvement on 2009 Green Drop status 86% of plants in low and medium risk positions 71% and 96% Site Inspection Scores MPUMALANGA Page 245 Introduction Wastewater services delivery is performed by eighteen (18) Water Services Authorities in Mpumalanga via an infrastructure network comprising of 76 wastewater collector and treatment systems. A total flow of 159 Ml/day is received at the 76 treatment facilities, which has a collective hydraulic design capacity of 323 Ml/day (as ADWF). This means that 49%% of the design capacity is taken up by the current operational flows, leaving a 51% to meet the future demand without creating new capacity. However, the findings of the Green Drop assessment suggest that a significant portion of surplus capacity might not be ‘readily available’, as result of inadequate maintenance and operational deficiencies at lower capacity municipalities. A different scenario is also possible, especially at high capacity municipalities, where infrastructure cope with flows that exceed the theoretical design capacity without compromising the final effluent capacity. This attainment is however, dependant on qualified and experienced plant management and scientific services. MICRO MACRO SMALL SIZE MEDIUM LARGE SIZE SIZE SIZE Total 0.5-2 SIZE 10-25 <0.5 >25 Undetermined Mℓ/day 2-10 Mℓ/day Mℓ/day Mℓ/day Mℓ/day Mℓ/day No of WWTPs 7 27 27 9 2 4 76 Total Design Capacity 1.5 26.4 124.7 114.5 56 4 323.1 (Ml/day) Total Daily Inflows 0.3 12.9 47.7 62.7 35.5 44 159.1 (Ml/day) *ADWF = Average Dry Weather Flow Provincial Green Drop Analysis Analysis of the Green Drop assessments and site inspection results indicate that performance vary from excellent to unsatisfactory. A total of 100% municipalities were assessed during the 2010/11 Green Drop Certification. MPUMALANGA Page 246 GREEN DROP COMPARATIVE ANALYSIS Performance Performance Category 2009 2010/11 trend Incentive-based indicators 10 18 Number of municipalities assessed (53%) (100%) ↑ Number of wastewater systems assessed 50 76 ↑ Average Green Drop score 30% 42% ↑ 14 31 Number of Green Drop scores ≥50% (37%) (40.8%) ↑ 36 45 Number of Green Drop scores<50% (63%) (59.2%) ↑ Number of Green Drop awards 2 1 ↓ Average Site Inspection Score N/A 57% N/A PROVINCIAL GREEN DROP SCORE N/A 56% N/A N/A = Not applied ↑ = improvement, ↓= digress, →= no change The 100% assessment coverage included a total of 76 wastewater systems for Mpumalanga. The improved rate of submission of performance portfolios by municipalities affirms the commitment by municipal management in Mpumalanga to raise their service standard and performance. It appears as though the incentive-based regulatory approach succeeds as positive stimulus to facilitate improved performance and public accountability, whilst establishing essential systems and processes to sustain and measure gradual improvement. Whereas only 14 systems obtained Green Drop scores ≥50% in 2009, 31 systems obtained >50% in the 2010/11 Green Drop cycle. On average, the GDC scores increased from 30% to 42%, indicating an impressive improvement record for Mpumalanga. Unfortunately, only 1 system achieved Green Drop status in 2010/11 compare to 2 in 2009. However, readers must be mindful that Green Drop requirements become more stringent with every assessment cycle. MPUMALANGA Page 247 When comparing 2010/11 Green Drop results with 2009, the following trends are observed: 26 more systems were assessed in 2010 (76) compared to 2009 (50) 1 system achieved Green Drop Certification, indicating 1 systems are considered ‘excellent’ (>90%). This marks a reduction from the2 excellent systems that were achieved in 2009 24% ‘average systems’ in 2009 improved to 30% in 2010/11 68% of systems were in ‘critical state’ in 2009 compared to 38% in 2010/11 × However, systems previously in ‘critical’ (2009) moved into ‘very poor’ (2010), resulting in an increase in ‘very poor’ systems. Provincial Risk Analysis The Green Drop requirements are used to assess the entire value chain involved in the delivery of municipal wastewater services, whilst the risk analyses focus on the treatment function specifically. CUMULATIVE RISK COMPARATIVE ANALYSIS Performance Performance Category 2009 2010/11 trend Risk-based indicators Highest CRR 18 23 ↑ Average CRR 12 14 ↑ Lowest CRR 5 5 → Average Design Rating (A) 1.3 1.3 → Average Capacity Exceedance Rating (B) 3.5 4.2 ↑ Average Effluent Failure Rating (C) 5.1 6.1 ↑ Average Technical Skills Rating (D) 2.5 2.7 ↑ AVERAGE % DEVIATION FROM maximum- 62.6 72.6 CRR ↑ N/A = Not applied ↑ = digress, ↓=improvement, →= no change MPUMALANGA Page 248 From the above table, it can be observed that the Province has not been successful in arresting or reducing the overall risk position. The average CRR as a % of the maximum CRR has increased from 62.6 to 72.6%, indicating an aggressive increase in risk position for the Mpumalanga wastewater treatment plants. Renewed effort (and adequate resources) will have to be applied to ensure that treatment plants move reliably and consistently into a lower risk space. Regulatory surveillance is placed on the municipal plants that are positioned in high- to critical risk space. These municipal treatment plants are clearly identified in this Chapter under “Regulatory Impression” and marked with CRR↑ for each individual plant. The CRR analysis further points out that efforts related to technical skills, final effluent quality and plant capacity has not paid off, as is seen in the higher weightings against the CRR B, C and D factors, whilst the capacity rating (A) remained constant. When observing the movement of risk in the following bar-chart, a definite trend is observed whereby plants previously in low and medium risk positions are moving into high and critical risk positions. This is evident from the increase in number of plants in high risk from 19 to 32, whilst an equally negative trend is seen in the increase of critical risk plants from 3 to 12. The number of plants in low risk space decreased from 18 to 7, whilst the plants in medium risk position decreased from 41 to 25. Overall, the risk trend is one of positive replacement with more plants in higher risk positions compared to 2009.The primary objective for Mpumalanga would be to arrest this decline and displacement, and apply the necessary means to reverse this trend. Fifty-eight (58) % of all municipal plants in Mpumalanga are now in high- to critical risk landscape. This is a direct indicator of the inadequacies pertaining to plant capacity, effluent quality and technical skills. Experience has learnt that the cost and specialist resources are much higher to address critical risk scenario, compared to earlier interventions when detecting early warning signals of a plant moving into distress. A further alarming trend is the movement to employ treatment technologies that require higher skill and operational funds, are may not be sustainable options. However, more work will have to be done to quantify this as a (national) trend. 90 – 100% Critical risk WWTPs % Deviation = 70 - <90% High Risk WWTPs CRR/CRR(max) TREND 50-<70% Medium risk WWTPs <50% Low Risk WWTPs MPUMALANGA Page 249 The following municipalities are in critical risk positions in 2010/11. All municipal plants that are in critical and high risk space are placed under regulatory surveillance: 2011 Average Priority WSA Name WWTPs in critical risk space CRR/CRRmax % deviation 1 Delmas LM 94% Botleng, Delmas 2 Mkhondo LM 92% Amsterdam 3 Msukaligwa LM 91% Breyten, Ermelo, Chrissesmeer, Davel 4 Lekwa LM 89% Standerton 5 Albert Luthuli LM 87% Carolina 6 Bushbuckridge LM 83% Dwarsloop, Mkhuhlu 8 Nkomazi LM 74% Komatipoort Critical risk WSA and plants High risk WSA and plants Note: above list reflect critical risk plants only. Municipalities are urged to consult the content of this Chapter to identify the plants that are in high risk positions. Conclusion The Green Drop results for 2010-2011 indicated that municipal wastewater management in Mpumalanga is not satisfactory, but improving as indicated by the Provincial Green Drop score of 56%. This profile is somewhat skewed, as some good performing institutions have a positive impact on the provincial picture. Analyses of the CRR risk trends indicate a strong movement of plants into high and critical risk space. Hence, whilst the Green Drop improvement trend is positive for the management aspects, the negative CRR trend indicate that treatment plants need concerted attention. A positive indicator for the Province is the marked improvement in submission of evidence, and the subsequent 100% assessment of all municipal systems. This progress has ensured that a verified baseline is in place, from where informed decision can be taken towards gradual and sustainable improvement. One Green Drop Certificate is awarded in Mpumalanga: 1 Green Drop : Mbombela Local Municipality If you want to achieve excellence, you can get there today. Just quit doing less-than-excellent work” Thomas J Watson MPUMALANGA Page 250 Performance Barometer The following log scale indicates the various positions that municipalities hold with respect to their individual Municipal Green Drop Scores: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 MPUMALANGA Page 251 Water Services Authority: Albert Luthuli Local Municipality Municipal Green Drop Score: 17.2% Elukwatini / Performance Area Carolina Badplaas Eerstehoek Systems Process Control, Maintenance & 38 7.5 46 Management skills Monitoring Programme 30 0 0 Credibility of Sample Analyses 70 30 70 Submission of Results 0 0 0 Wastewater Quality Compliance 10 0 0 Failure Response Management 0 0 0 Bylaws 45 60 60 Treatment & Collector Capacity 25 55 0 Asset Management 40 40 10 Bonus Scores 1.2 2.6 0 Penalties 0 0 0 Green Drop Score (2011) 18.8% (↑) 19.4% (↑) 12.6% (↑) Green Drop Score (2009) NA-0% NA-0% NA-0% Treatment Capacity (Ml/d) 2.5 0.4 1.8 Operational % i.t.o.