This project work was undertaken to assess the state of ground water(borehole and well water) and its health implications in Warri metropolis using Uvwie, Udu and Effurun Local Government Area. Samples were collected in six different locations in Warri metropolis. The analysis was centered on the physiochemical parameters considered pH, temperature, conductivity, turbidity, dissolved oxygen(DO), biological oxygen demand(BOD), total dissolved solid(TDS), total suspended solids (TSS), nitrate, sulphate and faecal coliform. The results showed that Physico-chemical parameters; pH ranged from (3.97-6.62) in the borehole water standard, (5.76 – 6.70) well water; temperature varied from (27.5-29.5) borehole and (27.8-29.5) well water; conductivity ranges from(52-339) borehole and (332-594) well water; turbidity ranges from (0.53-1.23) borehole and (0.99-1.27) well water. Others all in (mg/L); DO ranged from (7.15-7.44) borehole water and, (6.30-7.17); TDS varied from (27 – 176) in borehole and (172-306) well water; TSS varied from (1.0-2.0) and, (1.0-4.0) well water; NO3- ranged from (8.7–20.0) in borehole and, (7.9-35.6) well water, SO42-
(<1.0-6.0) in borehole and, (21.0-35.6) well water; BOD (<0.50) borehole and, (56.0-185) well water. Micro-biological parameters; TC (cfu/100ml) were not present in either of the ground water. All values were related to WHO, EPA and FMA standard of water quality. Hence it was therefore recommended that almost all the parameter analyzed for were of the standard of WHO, EPA and FMA which is portable for domestic uses, also with no health implication, except for BOD in well water which was above the WHO standard and pH which was below WHO pH standard would require treatment before usage.