Holding(s) in Company

SCHEDULE 10

              NOTIFICATION OF MAJOR INTERESTS IN SHARES

Name of company
Impax Environmental Markets plc

2) Name of shareholder having a major interest
Asset Value Investors Ltd

3) Please state whether notification indicates that it is in respect
of holding of the shareholder named in 2 above or in respect of a
non-beneficial interest or in the case of an individual holder if it
is a holding of that person's spouse or children under the age of 18
Non beneficial interest as investment manager

4) Name of the registered holder(s) and, if more than one holder, the
number of shares held by each of them
Chase Nominees - 7,172,701 / Nortrust Nominees 1,484,823
BoNY Nominees - 559,128 / State Street Nominees 368,404
Pictet - 144,831 / Mellon 317,564

5) Number of shares/amount of stock acquired
n/a

6) Percentage of issued class
n/a

7) Number of shares/amount of stock disposed
1,000,000

8) Percentage of issued class
0.76%

9) Class of security
Ordinary shares of 10p

10) Date of transaction
18 August 2006
11) Date company informed
21 August 2006

12) Total holding following this notification
10,047,451

13) Total percentage holding of issued class following this
notification
7.68%

14) Any additional information
The beneficial holders of the above holding are;
British Empire Securities - 6,672,309
Yale University - 1,484,823
Rockefeller University - 500,392
AVI Value Fund LLC - 424,589
CF AVI Global Fund - 134,539
Carnegie Corporation - 368,404
Lord North Street - 144,831
Columbia University (N/V) - 317,564
15) Name of contact and telephone number for queries
Anthony Lee  0207-490-4355
16) Name of authorised company official responsible for
making this notification
Anthony Lee

Date of notification 22 August 2006

---END OF MESSAGE---