Across India, pollution control authorities have significantly strengthened the enforcement of Sewage Treatment Plant (STP)<\/a> regulations. Environmental compliance is no longer limited to obtaining approvals during installation\u2014it now requires continuous monitoring and consistent operational performance. In recent years, several State Pollution Control Boards<\/a> (SPCBs) have introduced stricter discharge requirements, reflecting the country’s increasing emphasis on protecting rivers, lakes, groundwater, and other natural water resources.<\/p>\n\n\n\n A notable example is Karnataka, where the Karnataka State Pollution Control Board (KSPCB) revised its STP outlet standards in October 2025, introducing some of the most stringent discharge limits in the nation. This regulatory update is not an isolated development but part of a broader national movement toward stronger environmental governance. Today, STP owners across residential societies, hotels, commercial complexes, educational institutions, industrial facilities, and municipal projects are expected to comply with tighter discharge standards than those commonly followed in the past.<\/p>\n\n\n\n Whether you are planning to install a new sewage treatment plant or managing an existing one, understanding the latest CPCB, DPCC, and SPCB discharge requirements is essential. Compliance is no longer simply about obtaining approval\u2014it directly affects operational continuity, environmental responsibility, and financial risk.<\/p>\n\n\n\n The quality of treated wastewater determines whether it can be:<\/p>\n\n\n\n Every sewage treatment plant is evaluated using specific water quality parameters. These include:<\/p>\n\n\n\n Meeting these standards is necessary to obtain and maintain regulatory approvals while protecting the surrounding environment.<\/p>\n\n\n\n The primary objective of STP discharge standards is environmental protection. Treated sewage water is commonly released into natural water bodies or reused for non-potable applications. If the treatment process fails to remove sufficient pollutants, the discharged water can create serious environmental and public health problems.<\/p>\n\n\n\n Excess organic matter increases oxygen demand within rivers and lakes, reducing dissolved oxygen available for aquatic organisms. Nutrient pollutants such as nitrogen and phosphorus encourage excessive algae growth, eventually causing eutrophication, oxygen depletion, and damage to aquatic ecosystems. Untreated or poorly treated wastewater can also contaminate groundwater, increase pathogen levels, and create long-term ecological impacts.<\/p>\n\n\n\n For these reasons, pollution control authorities specify maximum allowable limits for every important parameter before treated water can legally leave an STP.<\/p>\n\n\n\n These numerical standards are designed to ensure that wastewater treatment plants consistently deliver environmentally safe water rather than merely reducing pollution to acceptable averages.<\/p>\n\n\n\n Environmental regulators have adopted a much stricter approach toward STP compliance than in previous years. Operating a sewage treatment plant without a valid Consent to Operate (CTO), or releasing treated water that exceeds prescribed discharge limits, can result in serious legal and financial consequences.<\/p>\n\n\n\n Possible enforcement actions include:<\/p>\n\n\n\n Since 2015, the National Green Tribunal has consistently monitored sewage treatment compliance across multiple states, reinforcing the importance of proper plant operation and regular monitoring.<\/p>\n\n\n\n For plant owners and facility managers, compliance should therefore be viewed as an ongoing operational responsibility rather than a one-time certification obtained during commissioning.<\/p>\n\n\n\n Many STP operators become confused because different authorities issue different guidelines. In reality, India’s regulatory framework operates through three interconnected levels, each serving a specific role.<\/p>\n\n\n\n The Central Pollution Control Board establishes national baseline standards under the Environment (Protection) Rules, 1986. These standards apply throughout India unless state governments or project-specific approvals impose stricter conditions.<\/p>\n\n\n\n CPCB norms therefore provide the minimum compliance framework that sewage treatment plants are expected to follow nationwide.<\/p>\n\n\n\n Every state has its own Pollution Control Board responsible for implementing environmental regulations within its jurisdiction.<\/p>\n\n\n\n Although SPCBs generally adopt CPCB standards, they are legally permitted to introduce stricter discharge limits whenever local environmental conditions require greater protection.<\/p>\n\n\n\n Examples include:<\/p>\n\n\n\n States such as Karnataka and Maharashtra have already introduced more demanding STP discharge standards than the national baseline for certain parameters.<\/p>\n\n\n\n Within the National Capital Territory, the Delhi Pollution Control Committee functions similarly to a State Pollution Control Board.<\/p>\n\n\n\n Because of continued legal attention regarding pollution in the Yamuna River, Delhi has adopted some of India’s strictest sewage treatment standards.<\/p>\n\n\n\n Operational STPs in Delhi undergo regular monitoring, with monthly sampling programs evaluating multiple water quality parameters to ensure continuous compliance.<\/p>\n\n\n\n One principle simplifies compliance for every STP owner:<\/p>\n\n\n\n Always follow whichever requirement is stricter.<\/strong><\/p>\n\n\n\n If your Consent to Establish (CTE) or Consent to Operate (CTO) specifies tighter discharge values than the national CPCB baseline, those project-specific conditions become legally binding.<\/p>\n\n\n\n Therefore, operators should never rely solely on generic online charts. Instead, they should regularly review the limits stated in their official approvals, since those figures represent the legally enforceable requirements for their individual projects.<\/p>\n\n\n\n Biochemical Oxygen Demand, commonly known as BOD<\/strong>, measures the amount of oxygen microorganisms require to decompose biodegradable organic matter present in treated wastewater.<\/p>\n\n\n\n Higher BOD values indicate that treated water still contains excessive organic pollution. When discharged into rivers or lakes, this organic material consumes dissolved oxygen as it decomposes, leaving insufficient oxygen for fish and other aquatic organisms.<\/p>\n\n\n\n India’s regulatory direction has clearly shifted toward much stricter BOD requirements.<\/p>\n\n\n\n Earlier regulations commonly accepted a discharge limit of 30 mg\/L<\/strong>, but modern environmental enforcement increasingly expects BOD levels of 10 mg\/L or lower<\/strong> for treated sewage entering surface water bodies.<\/p>\n\n\n\n Delhi’s public sewage treatment plants are progressively being aligned with this benchmark, while many private STPs are also required to maintain the same standard as part of their regulatory approvals.<\/p>\n\n\n\n Similarly, Karnataka’s KSPCB has officially adopted BOD \u226410 mg\/L<\/strong> as its standard requirement for surface water discharge, illustrating the nationwide movement toward tighter environmental controls.<\/p>\n\n\n\n Chemical Oxygen Demand (COD) represents the total quantity of oxygen required to chemically oxidize both biodegradable and non-biodegradable pollutants present in wastewater.<\/p>\n\n\n\n Unlike BOD, which measures only biologically degradable organic matter, COD provides a broader assessment of total pollution load. Consequently, COD values are normally higher than BOD readings.<\/p>\n\n\n\n For treated sewage water, regulatory authorities increasingly apply a discharge limit of COD \u226450 mg\/L<\/strong>.<\/p>\n\n\n\n This should not be confused with the older industrial effluent standard of 250 mg\/L<\/strong>, which applies to an entirely different category of wastewater.<\/p>\n\n\n\n Because treated sewage is frequently discharged into natural water bodies or reused within communities, STPs are now expected to achieve this much stricter 50 mg\/L<\/strong> benchmark to ensure improved environmental protection and sustainable water reuse.<\/p>\n\n\n\n Among all wastewater quality parameters, pH<\/strong> is one of the most fundamental indicators of treated water quality. It determines whether the treated effluent is acidic, neutral, or alkaline before it is discharged into the environment or reused for secondary applications.<\/p>\n\n\n\n Maintaining an appropriate pH is essential because extreme acidity or alkalinity can negatively affect aquatic ecosystems, damage pipelines, corrode equipment, and reduce the effectiveness of biological treatment processes. A balanced pH also ensures that microorganisms responsible for wastewater treatment remain active and efficient throughout the treatment cycle.<\/p>\n\n\n\n Across the Central Pollution Control Board (CPCB), the Delhi Pollution Control Committee (DPCC), and most State Pollution Control Boards (SPCBs), the accepted pH range for treated sewage water remains 6.5 to 8.5<\/strong>.<\/p>\n\n\n\n Unlike several other parameters that have become increasingly stringent over recent years, the recommended pH range has remained relatively stable because it represents the optimum operating condition for most biological sewage treatment technologies.<\/p>\n\n\n\n Consistently maintaining treated water within this range helps protect receiving water bodies while ensuring the long-term reliability of treatment equipment and associated infrastructure.<\/p>\n\n\n\n Oil and grease are common pollutants found in domestic, commercial, and institutional wastewater. These contaminants typically originate from kitchens, restaurants, cafeterias, food preparation areas, bathrooms, vehicle washing facilities, and general household activities.<\/p>\n\n\n\n Although oil and grease may appear insignificant compared to other pollutants, excessive concentrations create several operational and environmental challenges.<\/p>\n\n\n\n When discharged into lakes or rivers, oil forms a thin surface layer that blocks sunlight penetration and restricts oxygen exchange between air and water. This directly impacts aquatic organisms and disturbs the ecological balance of natural water bodies.<\/p>\n\n\n\n Within an STP itself, excessive grease accumulation can:<\/p>\n\n\n\n For these reasons, pollution control authorities maintain a strict discharge limit.<\/p>\n\n\n\n The commonly accepted requirement across CPCB, DPCC, and most SPCBs is:<\/p>\n\n\n\n Oil & Grease \u226410 mg\/L<\/strong><\/p>\n\n\n\n This limit generally applies regardless of whether the treated water is discharged into natural water bodies or reused for non-potable applications, since excessive oil can interfere with nearly every downstream reuse process.<\/p>\n\n\n\n Among all wastewater quality parameters, ammonia<\/strong> has become one of the most closely monitored by pollution control authorities.<\/p>\n\n\n\n Ammoniacal nitrogen is produced primarily from the decomposition of human waste and other nitrogen-rich organic materials present in sewage. If not adequately removed during treatment, ammonia becomes highly toxic to fish and aquatic organisms.<\/p>\n\n\n\n In addition to its toxicity, ammonia also contributes to oxygen depletion because it consumes dissolved oxygen during the oxidation process within receiving water bodies.<\/p>\n\n\n\n Recognizing these environmental impacts, regulators have significantly increased their focus on ammonia removal.<\/p>\n\n\n\n Today, organizations such as the Delhi Pollution Control Committee include ammonia and total nitrogen among the parameters routinely analyzed during monthly inspections of operational sewage treatment plants.<\/p>\n\n\n\n The commonly referenced compliance value for total nitrogen is approximately:<\/p>\n\n\n\n Total Nitrogen \u226410 mg\/L<\/strong><\/p>\n\n\n\n Achieving this target consistently requires more than conventional biological treatment.<\/p>\n\n\n\n Modern sewage treatment plants generally need efficient nitrification and denitrification processes<\/strong> capable of converting ammonia into harmless nitrogen gas before discharge.<\/p>\n\n\n\n Many older STPs that continue using outdated treatment configurations often experience difficulty meeting current nitrogen requirements. Interestingly, these plants may successfully comply with BOD and COD limits while repeatedly failing ammonia standards, making process upgrades increasingly necessary under today’s regulatory environment.<\/p>\n\n\n\n Phosphorus is another nutrient that receives increasing regulatory attention due to its major role in water pollution.<\/p>\n\n\n\n In treated sewage, phosphorus is commonly measured as phosphate (PO\u2084)<\/strong>.<\/p>\n\n\n\n Although phosphorus is an essential nutrient for plant growth, excessive concentrations in rivers and lakes create severe environmental problems.<\/p>\n\n\n\n Large quantities of phosphate encourage rapid algae growth, resulting in a process known as eutrophication<\/strong>.<\/p>\n\n\n\n During eutrophication:<\/p>\n\n\n\n To reduce nutrient pollution, pollution control boards enforce strict phosphate discharge limits.<\/p>\n\n\n\n The generally accepted requirement is:<\/p>\n\n\n\n Phosphate (PO\u2084) \u22645 mg\/L<\/strong><\/p>\n\n\n\n In Delhi, dissolved phosphate is included among the parameters routinely tested during monthly compliance monitoring, demonstrating how nutrient pollution has become a major regulatory priority alongside BOD, COD, and ammonia.<\/p>\n\n\n\n The table below summarizes the commonly accepted modern discharge standards along with the historical baseline where applicable.<\/p>\n\n\n\n Although exact values may differ depending on project approvals or state-specific regulations, the following limits represent the current compliance direction adopted by CPCB, DPCC, and many State Pollution Control Boards for treated sewage discharged into surface water bodies.<\/p>\n\n\n\n While these values represent today’s commonly enforced standards, plant owners should never rely exclusively on generalized charts. The legally binding discharge limits remain those specified within the project’s Consent to Operate (CTO)<\/strong> or other regulatory approvals, which may prescribe even stricter requirements depending on location, receiving water body, or environmental sensitivity.<\/p>\n\n\n\n One question frequently raised by plant owners is why different publications sometimes mention different discharge limits for the same parameter.<\/p>\n\n\n\n The explanation lies in India’s layered regulatory framework.<\/p>\n\n\n\n Over the years, sewage treatment standards have undergone several revisions, legal reviews, policy updates, and implementation changes. In addition, environmental conditions differ considerably across regions.<\/p>\n\n\n\n States containing environmentally sensitive areas\u2014including major river basins, coastal ecosystems, and water-scarce regions\u2014are legally permitted to enforce stricter discharge requirements than the national baseline established by CPCB.<\/p>\n\n\n\n This is why organizations such as Karnataka State Pollution Control Board (KSPCB) and Delhi Pollution Control Committee currently implement some of the country’s most demanding STP outlet standards, while other states may continue following the broader CPCB framework.<\/p>\n\n\n\n Rather than depending solely on generic online information, every STP operator should verify the exact numerical limits applicable to their project directly through the conditions stated in their Consent to Establish (CTE), Consent to Operate (CTO), or the latest notification issued by their respective pollution control authority. This approach ensures long-term compliance while reducing the risk of regulatory action arising from outdated information.<\/p>\n\n\n\n Meeting CPCB, DPCC, and SPCB discharge standards is no longer just a regulatory requirement\u2014it has become a critical operational responsibility for every sewage treatment plant owner. Environmental authorities across India are now conducting more frequent inspections, strengthening monitoring systems, and taking faster enforcement action against non-compliant facilities.<\/p>\n\n\n\n The consequences of failing to meet prescribed discharge limits can be severe. Recent enforcement actions, particularly in Delhi during late 2025, demonstrate how regulators are treating environmental violations with greater seriousness than ever before. Several sewage treatment plants received substantial financial penalties amounting to lakhs of rupees, along with official show-cause notices and increased public scrutiny.<\/p>\n\n\n\n Beyond financial losses, operators may also face:<\/p>\n\n\n\n For housing societies and commercial properties, poor STP performance can also negatively affect property value, resident satisfaction, and future regulatory approvals.<\/p>\n\n\n\n Compliance should therefore be viewed as an ongoing management process rather than a one-time approval obtained during plant commissioning. Regular maintenance, periodic water testing, timely equipment upgrades, and proper process monitoring cost significantly less than facing legal penalties after repeated violations.<\/p>\n\n\n\n The most successful STP operators invest in preventive maintenance instead of corrective action after inspections identify deficiencies.<\/p>\n\n\n\n Installing an advanced sewage treatment plant is only the beginning. Consistent compliance depends on how efficiently the system is operated every day.<\/p>\n\n\n\n Many STPs fail not because of poor technology, but because of inconsistent operation, delayed maintenance, or inadequate monitoring.<\/p>\n\n\n\n Several operational practices can significantly improve long-term compliance.<\/p>\n\n\n\n Routine laboratory testing should include every major discharge parameter\u2014not only BOD and COD but also ammonia, phosphate, oil and grease, pH, TSS, and fecal coliform where applicable.<\/p>\n\n\n\n Frequent testing allows operators to identify developing problems before they become regulatory violations.<\/p>\n\n\n\n The biological section of an STP requires continuous attention.<\/p>\n\n\n\n Routine maintenance should include:<\/p>\n\n\n\n Well-maintained biological treatment ensures consistent pollutant removal while extending equipment life.<\/p>\n\n\n\n Many states now require larger sewage treatment plants exceeding 50 KLD<\/strong> to install online monitoring instruments connected directly to pollution control board servers.<\/p>\n\n\n\n Real-time monitoring enables regulators to evaluate plant performance continuously while helping operators identify operational issues immediately.<\/p>\n\n\n\n Environmental standards continue to evolve.<\/p>\n\n\n\n Operators should periodically review the conditions specified within their Consent to Operate (CTO) to ensure that plant performance remains aligned with current discharge requirements.<\/p>\n\n\n\n Following these operational practices greatly reduces the likelihood of penalties while improving treatment reliability throughout the plant’s service life.<\/p>\n\n\n\n Although BOD and COD receive considerable attention, Total Suspended Solids (TSS)<\/strong> is another critical parameter evaluated during STP inspections.<\/p>\n\n\n\n TSS measures the concentration of organic and inorganic particles that remain suspended in treated wastewater after treatment.<\/p>\n\n\n\n Excess suspended solids create several environmental concerns.<\/p>\n\n\n\n High TSS levels:<\/p>\n\n\n\n Modern discharge standards generally require:<\/p>\n\n\n\n TSS \u226410 mg\/L<\/strong><\/p>\n\n\n\n Achieving this limit depends largely on the effectiveness of the final clarification and tertiary filtration stages.<\/p>\n\n\n\n Well-maintained tertiary treatment systems\u2014including pressure sand filters, multimedia filters, and membrane filtration technologies\u2014typically produce excellent TSS removal.<\/p>\n\n\n\n Conversely, worn filtration media, poorly maintained clarifiers, or neglected tertiary filters remain among the most common reasons STPs fail regulatory inspections.<\/p>\n\n\n\n Maintaining clean filtration equipment and replacing filter media at appropriate intervals are essential for consistent TSS compliance.<\/p>\n\n\n\n Another parameter frequently overlooked by STP operators is Fecal Coliform<\/strong>, which measures disease-causing bacteria originating from human waste.<\/p>\n\n\n\n Even when an STP successfully achieves low BOD and COD values, harmful microorganisms may still remain if the treated water has not undergone effective disinfection.<\/p>\n\n\n\n For this reason, pollution control authorities place considerable emphasis on microbiological safety.<\/p>\n\n\n\n The commonly accepted discharge limit is:<\/p>\n\n\n\n Fecal Coliform \u2264100 MPN per 100 mL<\/strong><\/p>\n\n\n\n Meeting this requirement generally depends on an efficient disinfection stage.<\/p>\n\n\n\n Common disinfection technologies include:<\/p>\n\n\n\n Insufficient disinfectant dosing or failure of the final disinfection system is one of the most common reasons sewage treatment plants exceed fecal coliform limits despite otherwise satisfactory laboratory results.<\/p>\n\n\n\n Consistent monitoring of disinfection equipment is therefore just as important as maintaining biological treatment efficiency.<\/p>\n\n\n\n Modern sewage treatment is no longer focused solely on safe discharge.<\/p>\n\n\n\n Across many Indian cities, treated wastewater is increasingly viewed as a valuable water resource.<\/p>\n\n\n\n Urban development authorities and pollution control boards actively encourage STP operators to maximize treated water reuse instead of continuously discharging treated effluent into drains or rivers.<\/p>\n\n\n\n In many locations, reuse requirements are becoming nearly as important as discharge standards.<\/p>\n\n\n\n This shift supports:<\/p>\n\n\n\n Many newly designed sewage treatment plants now incorporate dedicated treated water reuse systems from the initial design stage rather than adding them later.<\/p>\n\n\n\n This approach is generally more economical while improving long-term regulatory compliance.<\/p>\n\n\n\n One of the most common applications of treated sewage water is toilet flushing through dual plumbing systems.<\/p>\n\n\n\n For this purpose, treated water should be:<\/p>\n\n\n\n Maintaining these characteristics helps prevent fixture staining, unpleasant odors, and pipeline fouling throughout residential and commercial buildings.<\/p>\n\n\n\n Treated wastewater is also widely reused for irrigating gardens, lawns, parks, and landscaped areas.<\/p>\n\n\n\n Water intended for irrigation should have:<\/p>\n\n\n\n Because irrigation water frequently comes into contact with soil, vegetation, maintenance staff, and occasionally the public, maintaining microbiological safety remains particularly important.<\/p>\n\n\n\n Many commercial buildings and industrial facilities reuse treated wastewater in cooling systems and vehicle washing operations.<\/p>\n\n\n\n For these applications, treated water should maintain:<\/p>\n\n\n\n These characteristics reduce scaling, equipment fouling, pipeline blockage, and long-term maintenance costs while improving cooling system efficiency.<\/p>\n\n\n\n Several municipal authorities now encourage or require treated sewage water to be used during construction activities.<\/p>\n\n\n\n Typical applications include:<\/p>\n\n\n\n Provided the required quality parameters are achieved, treated wastewater offers an effective alternative to freshwater for these activities.<\/p>\n\n\n\n Using reclaimed water also supports sustainable construction practices while reducing pressure on local freshwater resources.<\/p>\n\n\n\n Several state policies\u2014including those implemented in Delhi\u2014emphasize maximizing treated wastewater reuse wherever practical.<\/p>\n\n\n\n The long-term objective is to reduce dependence on surface water discharge and gradually move toward minimum discharge or zero-discharge systems<\/strong> wherever feasible.<\/p>\n\n\n\n For new sewage treatment projects, incorporating reuse infrastructure during the design phase is generally more cost-effective than retrofitting reuse systems after future regulations become more stringent.<\/p>\n\n\n\n As environmental standards continue evolving, water reuse is expected to become an increasingly important component of STP planning, operation, and regulatory compliance across India.<\/p>\n\n\n\nWhy Understanding STP Standards Matters<\/h2>\n\n\n\n
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Purpose Behind STP Regulations<\/h3>\n\n\n\n
Increasing Enforcement Across India<\/h2>\n\n\n\n
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Understanding India’s Three-Level Regulatory System<\/h3>\n\n\n\n
Central Pollution Control Board (CPCB)<\/h4>\n\n\n\n
State Pollution Control Boards (SPCBs)<\/h4>\n\n\n\n
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Delhi Pollution Control Committee (DPCC)<\/h4>\n\n\n\n
Which Standard Applies?<\/h3>\n\n\n\n
Key Parameter 1: Biochemical Oxygen Demand (BOD)<\/h3>\n\n\n\n
Key Parameter 2: Chemical Oxygen Demand (COD)<\/h3>\n\n\n\n
STP Discharge Parameters and Their Latest Compliance Standards<\/h2>\n\n\n\n
Maintaining the Right pH Level<\/h3>\n\n\n\n
\n\n\n\nOil and Grease Control<\/h3>\n\n\n\n
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\n\n\n\nAmmoniacal Nitrogen (Ammonia)<\/h3>\n\n\n\n
\n\n\n\nPhosphate (Phosphorus)<\/h3>\n\n\n\n
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\n\n\n\nQuick Reference for Major STP Parameters<\/h2>\n\n\n\n
Parameter<\/th> Modern Standard<\/th> Previous\/Baseline<\/th> Importance<\/th><\/tr><\/thead> BOD<\/td> \u226410 mg\/L<\/td> 30 mg\/L<\/td> Indicates biodegradable organic pollution and oxygen demand.<\/td><\/tr> COD<\/td> \u226450 mg\/L<\/td> 250 mg\/L (industrial effluent)<\/td> Measures total oxidizable pollutants in treated wastewater.<\/td><\/tr> pH<\/td> 6.5\u20138.5<\/td> \u2014<\/td> Protects aquatic life and treatment infrastructure.<\/td><\/tr> Oil & Grease<\/td> \u226410 mg\/L<\/td> \u2014<\/td> Prevents pipe blockage and protects receiving water bodies.<\/td><\/tr> Ammoniacal\/Total Nitrogen<\/td> ~10 mg\/L<\/td> \u2014<\/td> Reduces toxicity and oxygen depletion in aquatic ecosystems.<\/td><\/tr> Phosphate (PO\u2084)<\/td> \u22645 mg\/L<\/td> \u2014<\/td> Controls eutrophication and excessive algae growth.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\nCommon STP Discharge Limits<\/h2>\n\n\n\n
Parameter<\/th> Typical Limit<\/th><\/tr><\/thead> BOD<\/td> \u226410 mg\/L<\/td><\/tr> COD<\/td> \u226450 mg\/L<\/td><\/tr> TSS<\/td> \u226410 mg\/L<\/td><\/tr> pH<\/td> 6.5\u20138.5<\/td><\/tr> Oil & Grease<\/td> \u226410 mg\/L<\/td><\/tr> Ammoniacal\/Total Nitrogen<\/td> \u226410 mg\/L<\/td><\/tr> Phosphate (PO\u2084)<\/td> \u22645 mg\/L<\/td><\/tr> Fecal Coliform<\/td> \u2264100 MPN\/100 mL<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n
\n\n\n\nWhy STP Standards Vary Across States<\/h2>\n\n\n\n
The Real Cost of STP Non-Compliance<\/h2>\n\n\n\n
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\n\n\n\nBest Practices for Maintaining Compliance<\/h2>\n\n\n\n
Conduct Regular Water Quality Testing<\/h3>\n\n\n\n
\n\n\n\nMaintain Biological Treatment Systems<\/h3>\n\n\n\n
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\n\n\n\nInstall Online Monitoring Systems<\/h3>\n\n\n\n
\n\n\n\nReview Consent Conditions Periodically<\/h3>\n\n\n\n
\n\n\n\nTotal Suspended Solids (TSS)<\/h2>\n\n\n\n
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\n\n\n\nFecal Coliform<\/h2>\n\n\n\n
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\n\n\n\nTreated Water Reuse Standards<\/h1>\n\n\n\n
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\n\n\n\nWater Quality for Flushing<\/h2>\n\n\n\n
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\n\n\n\nLandscaping and Gardening<\/h2>\n\n\n\n
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\n\n\n\nCooling Towers and Equipment Washing<\/h2>\n\n\n\n
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\n\n\n\nConstruction Applications<\/h2>\n\n\n\n
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\n\n\n\nMoving Toward Maximum Water Reuse<\/h2>\n\n\n\n
\n\n\n\nTypical Reuse Applications and Quality Expectations<\/h2>\n\n\n\n