Recreational river water quality league table: water clarity and Escherichia coli bacteria levels
This table is also available as a PDF (92 KB)
State rankings for 2007 for median water clarity and 95th percentile E. Coli bacteria at 76 sites in the national river water quality network (1=best, 76=worst) (ranks are based on standard scores*)
| River @ site Where there are two or more sites on the same river, sites from upstream to downstream are labelled (a), (b), etc. |
Region | Clarity [m] and (rank) | 95th percentile Escherichia coli bacteria [n/100ml] and (rank) | Overall state rank | ||
|---|---|---|---|---|---|---|
| Motueka @ Gorge (A) | Tasman | 12.93 | (1) | 18.4 | (4) | 1 |
| Ngaruroro @ Kuripapango (A) | Hawke's Bay | 8.55 | (2) | 7.4 | (2) | 2 |
| Waikato @ Reids Farm (A) | Waikato | 8.37 | (3) | 12.4 | (3) | 3 |
| Makaroro @ Burnt Br. (river joins Tukituki upstream of Tukituki @ Red Br.) | Hawke's Bay | 6.40 | (4) | 147.0 | (17) | 4 |
| Monowai below Gates (river joins Waiau upstream of Waiau @ Tuatapere) | Southland | 6.20 | (5) | 180.5 | (20) | 5 |
| Hakatakamea above MH Br. (river joins Waitaki downstream of Waitaki A) | Canterbury | 5.24 | (8) | 147.5 | (18) | 6 |
| Tarawera @ Lake outlet (A) | Bay of Plenty | 4.76 | (11) | 5.9 | (1) | 7 |
| Motueka @ Woodstock (B) | Tasman | 5.44 | (7) | 404.1 | (31) | 8 |
| Buller @ Longford (A) | Tasman | 5.65 | (6) | 490.7 | (35) | 9 |
| Waitaki @ Kurow (A) | Canterbury | 4.49 | (13) | 41.7 | (6) | 10 |
| Grey @ Waipuna (A) | West Coast | 4.53 | (12) | 76.6 | (10) | 11 |
| Manganui @ SH3 (river joins Waitara upstream of Waitara @ Bertrand Rd) | Taranaki Region | 4.93 | (10) | 276.0 | (23) | 12 |
| Hutt @ Kaitoke (A) | Wellington | 4.34 | (15) | 68.0 | (8) | 13 |
| Opihi @ Waipopo (B) | Canterbury | 4.07 | (17) | 200.2 | (21) | 14 |
| Mohaka @ Glenfalls (A) | Hawke's Bay | 3.50 | (19) | 164.7 | (19) | 15 |
| Clutha @ Luggate Br. (A) | Otago | 5.21 | (9) | 850.2 | (52) | 16 |
| Tongariro @ Turangi | Waikato | 3.15 | (21) | 36.4 | (5) | 17 |
| Opuha @ Skipton Br. (river joins Opihi upstream of Opihi A) | Canterbury | 2.91 | (23) | 130.8 | (16) | 18 |
| Ngaruroro @ Chesterhope (B) | Hawke's Bay | 2.68 | (25) | 76.4 | (9) | 19 |
| Opihi @ Rockwood (A) | Canterbury | 3.55 | (18) | 569.9 | (38) | 20 |
| Hurunui @ Mandamus (A) | Canterbury | 2.38 | (30) | 120.9 | (15) | 21 |
| Oreti @ Lumsden (A) | Southland | 4.25 | (16) | 894.4 | (54) | 22 |
| Clutha @ Millers Flat (B) | Otago | 2.15 | (33) | 62.1 | (7) | 23 |
| Mohaka @ Raupunga (B) | Hawke's Bay | 2.10 | (34) | 100.7 | (12) | 24 |
| Whirinaki @ Galatea (river joins Rangitaiki upstream of Rangitaiki A) | Bay of Plenty | 2.03 | (36) | 104.5 | (13) | 25 |
| Haast @ Roaring Billy | West Coast | 2.01 | (38) | 106.0 | (14) | 26 |
| Rangitaiki @ Te Teko (B) | Bay of Plenty | 1.90 | (43) | 100.2 | (11) | 27 |
| Wairau @ Tuamarina (B) | Marlborough | 3.23 | (20) | 643.6 | (42) | 28 |
| Ruamahanga @ SH2 (A) | Wellington | 4.35 | (14) | 1144.4 | (63) | 29 |
| Tukituki @ Red Br. | Hawke's Bay | 2.88 | (24) | 606.5 | (39) | 30 |
| Motu @ Waitangirua (A) | Gisborne | 2.40 | (29) | 485.7 | (34) | 31 |
| Waitaki @ SH1 Br. (B) | Canterbury | 2.01 | (37) | 354.1 | (26) | 32 |
| Kawarau @ Chards | Otago | 1.91 | (42) | 316.7 | (24) | 33 |
| Rangitaiki @ Murapara (A) | Bay of Plenty | 2.25 | (32) | 468.0 | (33) | 34 |
| Sutton @ SH87 (river joins Taieri between Taieri A and B) | Otago | 2.60 | (26) | 626.9 | (41) | 35 |
| Grey @ Dobson (B) | West Coast | 1.93 | (41) | 389.5 | (30) | 36 |
| Whanganui @ Te Maire (A) | Manawatu-Wanganui | 1.51 | (51) | 331.1 | (25) | 37 |
| Waimakariri @ Gorge (A) | Canterbury | 1.55 | (49) | 355.8 | (28) | 38 |
| Waipapa @ Forest Ranger | Northland | 1.79 | (44) | 458.8 | (32) | 39 |
| Rangitikei @ Mangaweka (A) | Manawatu-Wanganui | 2.40 | (28) | 720.5 | (46) | 40 |
| Waikato @ Hamilton Traffic Br. (B) | Waikato | 1.14 | (58) | 224.5 | (22) | 41 |
| Waikohu @ No. 1 Br. (river joins Waipoa upstream of Waipoa @ Kanakanaia) | Gisborne | 1.98 | (40) | 686.1 | (44) | 42 |
| Hurunui @ SH1 Br. (B) | Canterbury | 2.49 | (27) | 947.7 | (55) | 43 |
| Taieri @ Tiroiti (A) | Otago | 0.97 | (66) | 381.1 | (29) | 44 |
| Clutha @ Balclutha (C) | Otago | 1.54 | (50) | 615.7 | (40) | 45 |
| Waipa @ Otewa (A) | Waikato | 1.66 | (47) | 695.7 | (45) | 46 |
| Ohinemuri @ Karangahake | Waikato | 2.07 | (35) | 866.4 | (53) | 47 |
| Hutt @ Boulcott (B) | Wellington | 2.99 | (22) | 1266.7 | (64) | 48 |
| Ruamahanga @ Wardells (B) | Wellington | 1.04 | (60) | 533.6 | (37) | 49 |
| Shotover @ Bowens Peak | Otago | 0.54 | (72) | 354.1 | (27) | 50 |
| Oreti @ Riverton HW Br. (B) | Southland | 1.64 | (48) | 792.0 | (51) | 51 |
| Taieri @ Outram (B) | Otago | 1.08 | (59) | 767.2 | (49) | 52 |
| Waitangi @ Wakelins | Northland | 0.99 | (65) | 746.7 | (48) | 53 |
| Wairua @ Purua | Northland | 0.63 | (71) | 661.8 | (43) | 54 |
| Waipoa @ Kanakanaia | Gisborne | 0.28 | (76) | 531.7 | (36) | 55 |
| Waikato @ Rangiriri (C) | Waikato | 0.75 | (68) | 739.4 | (47) | 56 |
| Hoteo @ Gubbs | Auckland | 0.70 | (69) | 770.1 | (50) | 57 |
| Waiau @ Tuatapere | Southland | 1.99 | (39) | 1289.6 | (65) | 58 |
| Buller @ Te Kuha (B) | West Coast | 1.25 | (54) | 1003.2 | (57) | 59 |
| Mataura @ Seaward Down (B) | Southland | 1.00 | (63) | 983.5 | (56) | 60 |
| Motu @ Houpoto (B) | Bay of Plenty | 1.21 | (55) | 1115.8 | (60) | 61 |
| Tarawera @ Awakaponga (B) | Bay of Plenty | 1.00 | (64) | 1141.4 | (62) | 62 |
| Mataura @ Parawa (A) | Southland | 2.28 | (31) | 1732.7 | (70) | 63 |
| Mangakahia @ Titoki Br. | Northland | 0.50 | (73) | 1043.2 | (58) | 64 |
| Ruamahanga @ Waihenga (C) | Wellington | 1.68 | (46) | 1516.3 | (69) | 65 |
| Rangitopuni @ Walkers | Auckland | 0.67 | (70) | 1117.0 | (61) | 66 |
| Manawatu @ Opiki Br. (C) | Manawatu-Wanganui | 1.21 | (56) | 1360.7 | (66) | 67 |
| Waingongoro @ SH45 | Taranaki Region | 1.47 | (52) | 1488.5 | (68) | 68 |
| Waimakariri above old HW Br. (B) | Canterbury | 0.36 | (75) | 1103.8 | (59) | 69 |
| Waihou @ Te Aroha | Waikato | 0.76 | (67) | 1370.3 | (67) | 70 |
| Manawatu @ Weber Rd (A) | Manawatu-Wanganui | 1.32 | (53) | 1859.4 | (72) | 71 |
| Manawatu @ Teachers Coll. (B) | Manawatu-Wanganui | 1.72 | (45) | 2041.7 | (74) | 72 |
| Rangitikei @ Kakariki (B) | Manawatu-Wanganui | 1.20 | (57) | 1942.8 | (73) | 73 |
| Waipa @ Whatawhata (B) | Waikato | 0.49 | (74) | 1846.9 | (71) | 74 |
| Whanganui @ Paetawa (B) | Manawatu-Wanganui | 1.01 | (62) | 3629.4 | (75) | 75 |
| Waitara @ Bertrand Rd | Taranaki Region | 1.02 | (61) | 4426.6 | (76) | 76 |
*Standard score = value - median / interquartile range
