Environmental Quality (TCEQ) is also developing appropriate regulations to implement this legislation. TCEQ regulations for reclaimed water (treated municipal effluent) and for gray water (water from shower, bath tub, hand washing lavatories, and laundry water only) are found in 30 TAC 210. Water quality criteria for reclaimed water is summarized in Table 12 and summarized in Table 13 for gray water. Table 12. TCEQ Chapter 210 Water Quality Requirements for Reclaimed Water Parameter Comments Type I Type II without Type II with pond pond BOD5 or CBOD5 Mg/l 5 day 5 20 BOD or 15 30 – biochemical CCOD oxygen demand for carbonaceous BOD Turbidity NTU 3 n/a n/a – nephelometric turbidity units Fecal Coliform CFU/100 ml 30 20 200 200 – (E. Coli) day geometric mean Fecal Coliform CFU/100 ml 75 <800 <800 – (E. Coli) maximum single grab sample Enterococci CFU/100 ml 30 4 35 35 – day geometric mean Enterococci CFU/100 ml 9 89 89 – maximum single grab sample Table 13. TCEQ Chapter 210 Water Quality Requirements for Gray Water Parameter Comments Units Applied Where Units Applied Where Public Has Access Public Not Present
Environmental Quality (TCEQ) is also developing appropriate regulations to implement this legislation. TCEQ regulations for reclaimed water (treated municipal effluent) and for gray water (water from shower, bath tub, hand washing lavatories, and laundry water only) are found in 30 TAC 210. Water quality criteria for reclaimed water is summarized in Table 12 and summarized in Table 13 for gray water. Table 12. TCEQ Chapter 210 Water Quality Requirements for Reclaimed Water Parameter Comments Type I Type II without pond Type II with pond BOD5 or CBOD5 Mg/l – 5 day biochemical oxygen demand for carbonaceous BOD 5 20 BOD or 15 CCOD 30 Turbidity NTU – nephelometric turbidity units 3 n/a n/a Fecal Coliform (E. Coli) CFU/100 ml – 30 day geometric mean 20 200 200 Fecal Coliform (E. Coli) CFU/100 ml – maximum single grab sample 75 <800 <800 Enterococci CFU/100 ml – 30 day geometric mean 4 35 35 Enterococci CFU/100 ml – maximum single grab sample 9 89 89 Table 13. TCEQ Chapter 210 Water Quality Requirements for Gray Water Parameter Comments Units Applied Where Public Has Access Units Applied Where Public Not Present
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