What the Projects Entail

Nandyal Water Projects: ₹211 Crore Investment Aims to Secure Drinking Supply

The Andhra Pradesh government on 27 July 2026 laid foundation stones for a ₹211 crore suite of water‑infrastructure works in Nandyal district, comprising a ₹3.50 crore minor‑tank rejuvenation, a ₹169.67 crore sewage‑treatment plant (STP) of 32 MLD capacity, and a ₹38.75 crore water‑treatment plant (WTP) of 16 MLD capacity. The projects, announced under the AMRUT 2.0 scheme, are intended to bolster groundwater levels, eliminate drinking‑water shortages and address drainage problems aggravated by an impending El Niño‑driven drought.

The three undertakings target distinct but interlinked components of the district’s water‑supply chain.

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  The minor‑tank rejuvenation will restore a historic tank, expected to raise local groundwater tables.

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  The STP will treat 32 million litres of sewage daily before discharge, curbing river‑bank pollution.

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  The WTP will deliver 16 million litres of potable water per day to Nandyal town, supplementing existing supplies.

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  ₹3.50 crore allocated for tank restoration, aimed at augmenting groundwater recharge.

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  ₹169.67 crore earmarked for a 32 MLD STP, employing secondary‑treatment technology.

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  ₹38.75 crore dedicated to a 16 MLD WTP, incorporating rapid‑sand filtration and chlorination.

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  The Velugodu reservoir currently stores 1.7 tmcft of water, contributing modestly to groundwater recharge.

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  Minister N. Md. Farooq highlighted the risk of water scarcity due to the forecast El Niño event.

These figures illustrate the scale of capital outlay and the technical capacity being introduced to a region that has historically relied on rain‑fed agriculture and shallow wells.

How Water‑Treatment Technologies Work

Modern water‑treatment systems combine physical, chemical and biological processes to meet the World Health Organization’s drinking‑water guidelines. In a typical WTP, raw water first undergoes coarse screening, followed by rapid‑sand filtration to remove suspended solids. Subsequent coagulation‑flocculation and sedimentation stages precipitate finer particles, after which disinfection—commonly via chlorine dosing—ensures microbial safety.

• ▸Rapid‑sand filters can remove up to 99 % of turbidity, a key metric for visual clarity.
• ▸Chlorination achieves a residual disinfectant concentration of 0.2–0.5 mg/L, sufficient to inactivate most pathogens.
• ▸The National Water Quality Monitoring Programme, overseen by the Central Pollution Control Board, mandates quarterly testing for parameters such as coliform counts and heavy‑metal concentrations.

The STP, by contrast, follows primary, secondary and tertiary treatment. Primary sedimentation removes bulk organic matter; secondary biological oxidation (often using activated sludge) degrades dissolved organic carbon; tertiary processes—such as UV disinfection or membrane filtration—address residual pathogens and nutrients.

• ▸A 32 MLD STP can process roughly 1.15 billion litres of sewage annually, averting direct discharge into the Kundu River.
• ▸Secondary treatment typically achieves >85 % reduction in biochemical oxygen demand (BOD).

These technologies, when operated within prescribed standards, transform polluted effluent into water that can safely re‑enter the environment or be reused for irrigation, aligning with the circular‑economy ethos of the Namami Gange programme.

Regulatory Framework Governing Treatment Plants

India’s water‑quality regime rests on the Water (Prevention and Control of Pollution) Act 1974, which empowers the Central Pollution Control Board to prescribe effluent standards and monitor compliance through the National Water Quality Monitoring Programme. Under this framework, any new STP or WTP must obtain consent from the State Pollution Control Board, submit a detailed effluent‑characteristics report, and undergo periodic audits.

• ▸The CPCB’s guidelines stipulate a minimum 90 % removal efficiency for total suspended solids in municipal STPs.
• ▸Non‑compliance can trigger penalties up to ₹10 lakh per day of violation, as per the 2023 amendment to the Forest Conservation Act.
• ▸The UNFCCC’s Nationally Determined Contributions (NDCs) include a target to reduce water‑related emissions by improving wastewater treatment, linking domestic projects to global climate commitments.

These statutes ensure that the Nandyal installations are not merely infrastructural but also regulatory compliant, thereby safeguarding public health and environmental integrity.

Economic and Environmental Implications

The ₹211 crore investment translates into immediate job creation—estimated at 1,200 construction‑site positions—and long‑term operational employment for skilled technicians. Moreover, reliable drinking water reduces household expenditure on water‑borne illnesses, which the World Bank estimates cost Indian families an average of ₹1,200 per year in medical expenses.

• ▸A 10 % reduction in diarrhoeal disease incidence could save roughly ₹12 crore annually in healthcare costs across the district.
• ▸Enhanced groundwater recharge from the tank rejuvenation may offset the projected 15 % drop in monsoon rainfall under climate‑change scenarios.
• ▸By treating sewage before discharge, the STP helps the district meet its obligations under the Sendai Framework for Disaster Risk Reduction, which emphasizes resilient water‑sanitation services to mitigate flood‑related hazards.

These outcomes illustrate how the projects serve both developmental and climate‑adaptation objectives, reinforcing India’s commitments under the UNFCCC while delivering tangible local benefits.

Way Forward

Successful operation will hinge on robust institutional capacity. The district administration must establish a dedicated water‑resource management cell to oversee routine monitoring, maintenance schedules, and community awareness programmes. Capacity‑building initiatives—such as training local engineers in membrane‑cleaning protocols—will be essential to sustain performance standards.

• ▸The State Water Resources Department plans to integrate real‑time sensor data from the WTP into its existing SCADA system by 2027.
• ▸Community‑led monitoring committees, as advocated by the Namami Gange initiative, are slated to